Dissertations / Theses: 'Sequence stratigraphy Geology'

1

Suchy, Daniel R. "Hudson Bay platform : silurian sequence stratigraphy and paleoenvironments." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70280.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Trends in relative sea-level change, shown by curves drawn from drill core and outcrop sections in Llandoverian carbonates of the Hudson Bay Platform, were used to correlate individual parasequences among widely separated localities. Two sequences, bounded by regional disconformities, include: (1) the Severn River Formation, and (2) the Ekwan River, Attawapiskat, and Kenogami River Formations. Initial onlap of marine facies at the base of the Severn River Formation progressed from north to south, occurring first in the Hudson Bay Basin, then in the Moose River Basin; final retreat of the seas at the end of Attawapiskat time was in the opposite direction. The most extensive inundations occurred during Ekwan River and Attawapiskat depositional times. Large-scale trends in the curves delineate four major Early Silurian sea-level highstands also recognized in other basins.
Reefs in outcrops along the Attawapiskat River represent one interval of reef growth, had a syndepositional relief of 8-10 meters, and were terminated by a relative sea-level fall. Their present distribution is controlled by variously uplifted fault blocks.
The most important diagenetic processes were early marine cementation and shallow burial diagenesis, and in the southwestern Moose River Basin early secondary dolomitization.

2

Kahmann-Robinson, Julia A. Atchley Stacy C. "The sequence stratigraphic evolution of the Sturgeon Lake bank, central Alberta, Canada and its regional implications." Waco, Tex. : Baylor University, 2005. http://hdl.handle.net/2104/3016.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Udgata, Devi Bhagabati Prasad. "Glauconite as an indicator of sequence stratigraphic packages in a Lower Paleocene passive-margin shelf succession, Central Alabama." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Theses/UDGATA_DEVI_55.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Shoore, David Joseph. "Sequence stratigraphy of the Bridal Veil Falls Limestone, carboniferous, Oquirrh Group, on Cascade Mountain, Utah : a standard Morrowan cyclostratigraphy for the Oquirrh basin /." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd775.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Pierson, Jessica A. "Late cretaceous (Campanian and Maastrichtian) sequence stratigraphy, southeastern North Carolina, USA /." Electronic version (PDF), 2003. http://dl.uncw.edu/etd/2003/piersonj/jessicapierson.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Ahmadi, Ziad M. "Sequence stratigraphy using wireline logs from Upper Jurassic of England." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/1644/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Dayley, Jason. "Nonmarine Sequence Stratigraphy of the Gannett Group Southeastern Idaho and Western Wyoming." Thesis, University of Louisiana at Lafayette, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10002483.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Late Jurassic through Early Cretaceous strata of the Gannett Group record initial development of the Sevier thrust belt and adjacent foreland basin. Concepts of nonmarine sequence stratigraphy were used to determine the depositional and base level history of the Gannett Group in southeastern Idaho and western Wyoming. Base level fluctuations were driven entirely by tectonic processes, while tectonic uplift in the source area was a major control on sequence development. Six measured sections were revisited or measured and correlated using the concepts of sequence stratigraphy. Four distinct sequences were identified and correlated. Each sequence can be divided into degradational, transitional, or aggradational systems tracts. Where the degradational systems tracts are preserved, they are represented by thin conglomerates. Transitional systems tracts overly the degradational systems tracts and consist of thick sections of laterally discontinuous sandstone and fluvial overbank muds, which grade laterally into continuous limestone and calcareous mudstones that comprise the aggradational systems tract.

8

Nakanishi, Takeshi. "Practical application of sequence stratigraphy and risk analysis for stratigraphic trap exploration." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phn1635.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

"September 2002" Includes bibliographical references (leaves 200-209) Outlines an evaluation procedure for stratigraphic trap exploration by employing sequence stratigraphy, 3D seismic data visualisation and quantitative risk analysis with case studies in an actual exploration basin.

9

Parkinson, D. Neil. "The sequence stratigraphy of the Lower Jurassic of Western Europe." Thesis, University of Oxford, 1994. http://ora.ox.ac.uk/objects/uuid:cddbc521-f687-41dd-a9ad-f70621012555.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The Lower Jurassic stratigraphy of seven contrasting areas in western Europe is compared in order to seek evidence for a pan-Western European stratigraphic forcing mechanism. Sequencestratigraphic models are discussed and emphasis is placed upon the differing response of sedimentary systems in "accommodation space-dominated" and "supply-dominated" settings. Spectral gamma-ray data from clastic successions in the Wessex and Cleveland basins (England) are used to elucidate vertical trends. A proximal-distal model for control of Th/K ratios is advanced. Stage-frequency regressive-transgressive cycles in the two areas are shown to be closely correlative. Sedimentolgical logs and spectral gamma-ray data are presented for the carbonate ramp into turbidite sequence of Peniche (Portugal) and for a new exposure of the Pliensbachian-Toarcian in southern Germany. Systematic variation in clay mineralogy across Europe is suggested. Cycles in the Lower Jurassic of the North Viking Graben (Norwegian North Sea) are examined using wireline log correlation and the stratigraphic evolution of the Tethyan Rift in the Western and Southern Alps is reviewed. X-ray diffraction studies of the Pliensbachian-Toarcian interval in the Southern Alps are presented in order to elucidate sediment supply to the pelagic realm. The cycles observed in the English sections appear to be manifest widely across western Europe in a variety of tectonic and sedimentary settings. Sharp basinward facies shifts (candidate sequence boundaries) do not appear to be synchronous between basins. ⁸⁷SR/⁸⁶SR analysis of belemnites from the Portuguese and German sections confirms the regional applicability of the results of Jones (1992) and the utility of this technique in long range correlation. Carbon and oxygen analysis of the same material supplements the data of other workers and a direct relationship is suggested between relative sea level and organic carbon burial in the Early Jurassic.

10

Kells, Melanie P. "Sequence stratigraphy and depositional history of the Artinskian to Kungurian sequence, Otto Fiord area, northwestern Ellesmere Island." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/10139.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The Artinskian to Kungurian Sequence of the Otto Fiord area is dominated by the Great Bear Cape, Raanes and Trappers Cove formations in addition to the upper portions of the Nansen and Hare Fiord formations. The Great Bear Cape Formation (10-300 m), in the Otto Fiord area, is a yellowish-weathering, cliff-forming, packstone to grainstone dominated by echinoderms, bryozoans, and brachiopods. The Raanes Formation (10-225 m) is greenish-weathering, recessive to resistant, shaly to silty, variably cherty wackestone to packstone dominated by bryozoans, brachiopods, crinoids, and sponge spicules in addition to resistant, massive, very fine-grained, bryozoan-lime mud wackestone forming bioherms. The Trappers Cove Formation (55-1000 m) is black to dark gray spiculitic chert that is interfingered with thinly-bedded, black, recessive shales and siltstones. (Abstract shortened by UMI.)

11

Cleveland, David M. Atchley Stacy C. Nordt Lee C. "Fluvial sequence stratigraphy and paleoclimate of the Upper Triassic (Norian-Rhaetian) Chinle Strata, northern New Mexico." Waco, Tex. : Baylor University, 2007. http://hdl.handle.net/2104/5118.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Thesis (Ph.D.)--Baylor University, 2007.
In the abstract "[delta]13C" the "13" and "[delta]18O" the "18" are superscript; "pCO2" the "2" is subscript. Includes bibliographical references (p. 107-118).

12

Oliver, Guy Mark. "High-resolution sequence stratigraphy and diagenesis of mixed carbonate/siliciclastic successions." Thesis, University of Plymouth, 1997. http://hdl.handle.net/10026.1/2019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The aims of this thesis are to evaluate whether the distribution of diagenetic features in nearshore successions can be explained within a sequence stratigraphic concept; to assess whether the identification and analysis of these features can be used to aid in making sequence stratigraphic interpretations; and to evaluate whether sequence stratigraphy can be used to predict the distribution of diagenetic heterogeneities at the field and inter-well scale. High resolution sequence stratigraphic frameworks have been established for two nearshore mixed carbonate/siliciclastic successions, using facies and early diagenetic analyses. These are the Upper Jurassic Corallian Group of south Dorset and the Lower Cretaceous lower to middle Ericeira Group of west central Portugal. Early diagenetic analyses (including petrographic, CL, XRD and stable isotope work), was performed on 143 samples extracted from concretions and cemented beds at key horizons within these two successions. The early diagenetic results from within the majority of these cemented bodies generally supports the proposed facies-based sequence stratigraphic interpretation of parasequences, systems tracts and sequences. At a parasequence scale, early diagenetic analyses indicate that concretionary growth is controlled by an initial phase of rapid burial, equating to the period of parasequence progradation, followed by a period of prolonged residence time within a single diagenetic zone. This equates to a period of non-deposition/marine flooding at a parasequence boundary. The results also indicate that the application of sequence stratigraphic theory can be used to predict the presence and location of early diagenetic concretions within similar successions. Analysis of early diagenetic features within carbonate cemented beds (such as marine hard-ground surfaces) also supports the facies-based identification of parasequences. Such features are closely associated with parasequence boundary formation and the available data indicates that it is possible to predict their distribution within systems tracts of similar successions. At t?e systems tract scale, analysis of upward increasing or decreasing trends in the volume of pore-mling authigenic phases relates to subtle changes in the rate of sedimentation versus the rate of accommodation creation. A general upward increase in the volume of early diagenetic products (particularly dolomite) is seen to Occur within highstand systems tracts, which is attributed to an increase in residence time within early diagenetic zones as the rate of progradation/burial increases and the rate of non-deposition/marine flooding at parasquence boundaries remains constant. Similarly, an upward increase in the a180 isotope values of carbonate cements (to a more marine value) occurs within shelf-margin or lowstand systems tracts where rates of ~e1ative sea-level are rising increasingly quickly and, a dominance of marine cements occurs within coarser gramed beds of transgressive systems tracts. At the sequence scale, early diagenesis is controlled by the degree of relative sea-level fall and subsequent subaerial exposure at the end of the highstand systems tract. If a sequence is bounded above by a type-t sequence boundary and there is evidence of a period of sub-aerial exposure then the effects of surface related diagenesis (dissolution, replacement and further cementation) can be identified. However. if a sequence is bounded above by a type-2 sequence boundary, the effects of any meteoric diagenesis are likely to be confined to in-extensive fresh-water lenses originating from an up-dip/sub-aerially exposed area of the basin. Consequently, primary early diagenetic cements contained within pore spaces of the existing systems tracts will be preserved. The approach taken in this research has demonstrated that early diagenesis is a useful tool in refining high resolution sequence stratigraphic interpretations and in the prediction of the distribution of early diagenetic heterogeneities within reservoir units. It also shows that for nearshore successions the distribution of diagenetic heterogeneities can be predicted at a range of scales.

13

Eifert, Tambra L. "The Cretaceous-Paleogene transition in the northern Mississippi Embayment, S.E. Missouri: palynology, micropaleontology, and evidence of a mega-tsunami deposit." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Eifert_09007dcc80658622.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Thesis (Ph. D.)--Missouri University of Science and Technology, 2009.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 4, 2009) Includes bibliographical references (p. 243-265).

14

Gollop, Alison. "Structural controls on the seismic sequence stratigraphy of the Ben Nevis, Avalon, and Eastern Shoals formations, Terra Nova field, Jeanne D'Arc Basin, offshore Newfoundland /." Internet access available to MUN users only, 2003. http://collections.mun.ca/u?/theses,76559.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Martin, Keithan. "Integrating depositional facies and sequence stratigraphy in characterizing carbonate reservoirs: Mississippian limestone, western Kansas." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/20478.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Master of Science
Geology
Matthew W. Totten
The Mississippian-aged St. Louis Limestone of Western Kansas is a carbonate resource play that has been producing oil, gas, and natural gas liquids (NGL) for over 50 years. The Mississippian Limestone is made up of heterogeneous limestones with interbedded layers of porous and non-porous units, abrupt facies changes, and diagenetic alterations. These factors combine to characterize the St. Louis Limestone's internal complexity, which complicates hydrocarbon exploration. This study focuses on improving the understanding of the geometry, distribution, and continuity of depositional facies within Kearny County, Kansas. Petrophysical analysis of a suite of geophysical logs integrated with core provided the basis for establishing facies successions, determining vertical stacking patterns within a sequence stratigraphic framework, and correlating areas of high porosity with a respective facies. The following depositional facies were identified; 1) porous ooid grainstone, 2) highly-cemented ooid grainstone, 3) quartz-carbonate grainstone, 4) peloidal grainstone, 5) micritic mudstone, and the 6) skeletal wackestone/packstone. The porous ooid grainstone is the chief reservoir facies, with log-derived porosity measurements between four and eighteen percent. In areas without available core, depositional facies were predicted and modeled using a neural network analysis tool (Kipling2.xla). Values derived from the evaluated core intervals and their respective geophysical logs served as the framework for the neural network model. This study illustrates the advantages of correlating depositional facies with reservoir quality and correlating those specific facies to geophysical logs, ultimately to create a greater understanding of the reservoir quality and potential within the St. Louis Limestone of western Kansas.

16

Liu, Qunling. "Post mid-Cretaceous sequence stratigraphy and depositional history of northeastern Gulf of Mexico /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Becker, Sherry. "Depositional environments, provenance and sequence stratigraphy of the type Sassenach Formation, Jasper, Alberta." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0005/MQ44081.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

McCrimmon, G. Glen. "Sedimentology and sequence stratigraphy of the lower Cretaceous Clearwater Formation, Cold Lake, Alberta." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/9765.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The lower Cretaceous (Aptian to Albian) CLearwater Formation at Cold Lake, Alberta contains a complex assemblage of silicicastic strata. On the basis of detailed core analyses, Clearwater Formation strata have been subdivided into eight lithofacies and six recurring, facies associations. These facies associations are: (1) Tidal bar, (2) Sand flat, (3) Tidal-fluvial channel, (4) Fluvial channel, (5) Shoreface to foreshore, and (6) Offshore. Correlation of the facies associations and their bounding time-significant surfaces has led to the interpretation that Clearwater Formation strata are marine and tidally-influenced coastal embayment deposits that comprise four unconformity-bounded depositional sequences (1 to 4). Each sequence is made up of one or more incised valley-fill deposits within a backstepping parasequence set, indicating deposition in the transgressive system tract. The incised valley-fill deposits of each sequence, however, are interpreted a basinward shift of deltaic facies within a larger-scale marine transgression. Together, the four depositional sequences of the Clearwater Formation therefore compose a progradational sequence set. The Clearwater Formation is the primary reservoir unit at the Cold Lake heavy oil sands area with reserves estimated at $11,050\times 10\sp6$ m$\sp3$ of heavy crude bitumen. The distribution of hydrocarbons is related primarily to the distribution of reservoir quality strata and positive structure. Strata of facies associations 2 (sand flat) and 4 (fluvial channel) are observed to have the best reservoir quality. In the study area these strata occur in each of the upper three depositional sequences but are most abundant in sequences 3 and 4. The spatial distribution of reservoir-quality strata in Sequence 2 is such that additional hydrocarbon deposits are inferred to exist south of the study area, along the axis of the incised valley trend. Furthermore, northwest of the study are, Sequence 4 probably contains additional reservoir-quality strata along the trend of its incised valleys.

19

Brightmore, Ian William. "Sedimentology and sequence stratigraphy of Brigantian Yoredale Strata in Northern England and Scotland, U.K." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=165717.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

This study provides a sequence stratigraphic framework within which to consider Brigantian Yoredale strata. The framework has been used to determine the relative effects of syn-depositional tectonics, eustasy and climate on Yoredale sequence stratigraphic architecture within the northern Britain study area. Seventeen high-frequency depositional sequences have been identified and correlated within Brigantian strata in northern England and the Midland Valley of Scotland. Examination of sequence thickness and lithofacies stacking patterns has allowed the spatial and temporal occurrence of syn-depositional tectonism to be constrained and the effects on sequence and lithofacies architecture defined. The overall effect of tectonics on Yoredale sedimentation and cyclicity are interpreted to have been minimal. The correlation of sequence boundaries between the two very different tectonic regimes of northern England and the Midland Valley of Scotland would suggest that tectonics was not the driving mechanism behind cyclicity as suggested by some workers. Correlation of sequences with coeval sequences in the Illinois Basin of mid-continent North America demonstrates a lack of correlation to a particular tectonic regime or depositional facies type. The close similarity of sequence architecture between the Illinois Basin and northern British basins is taken to indicate that the sequences were synchronous depositional events that resulted from high-frequency eustatic sea-level changes. Glacio-eustasy provides the most logical explanation for the observed sequence architecture and apparent synchronous development of sequences and sequence boundaries across the northern Britain study area and globally.

20

Painter, Clayton S. "Sequence stratigraphy, geodynamics, and detrital geothermochronology of Cretaceous foreland basin deposits, western interior U.S.A." Thesis, The University of Arizona, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3600290.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Three studies on Cordilleran foreland basin deposits in the western U.S.A. constitute this dissertation. These studies differ in scale, time and discipline. The first two studies include basin analysis, flexural modeling and detailed stratigraphic analysis of Upper Cretaceous depocenters and strata in the western U.S.A. The third study consists of detrital zircon U-Pb analysis (DZ U-Pb) and thermochronology, both zircon (U-Th)/He and apatite fission track (AFT), of Upper Jurassic to Upper Cretaceous foreland-basin conglomerates and sandstones. Five electronic supplementary files are a part of this dissertation and are available online; these include 3 raw data files (Appendix_A_raw_isopach_data.txt, Appendix_C_DZ_Data.xls, Appendix_C_U-Pb_apatite.xls), 1 oversized stratigraphic cross section (Appendix_B_figure_5.pdf), and 1 figure containing apatite U-Pb concordia plots (Appendix_C_Concordia.pdf).

Appendix A is a combination of detailed isopach maps of the Upper Cretaceous Western Interior, flexural modeling and a comparison to dynamic subsidence models as applied to the region. Using these new isopach maps and modeling, I place the previously recognized but poorly constrained shift from flexural to non-flexural subsidence at 81 Ma.

Appendix B is a detailed stratigraphic study of the Upper Cretaceous, (Campanian, ~76 Ma) Sego Sandstone Member of the Mesaverde Group in northwestern Colorado, an area where little research has been done on this formation.

Appendix C is a geo-thermochronologic study to measure the lag time of Upper Jurassic to Upper Cretaceous conglomerates and sandstones in the Cordilleran foreland basin. The maximum depositional ages using DZ U-Pb match existing biostratigraphic age controls. AFT is an effective thermochronometer for Lower to Upper Cretaceous foreland stratigraphy and indicates that source material was exhumed from >4–5 km depth in the Cordilleran orogenic belt between 118 and 66 Ma, and zircon (U-Th)/He suggests that it was exhumed from <8–9 km depth. Apatite U-Pb analyses indicate that volcanic contamination is a significant issue, without which, one cannot exclude the possibility that the youngest detrital AFT population is contaminated with significant amounts of volcanogenic apatite and does not represent source exhumation. AFT lag times are <5 Myr with relatively steady-state to slightly increasing exhumation rates. Lag time measurements indicate exhumation rates of ~0.9->>1 km/Myr.

21

Koladich, Andre Myles. "Sedimentology, sequence stratigraphy, and reservoir quality of the Lower Cretaceous Glauconitic Sandstone, southeastern Alberta." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26680.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The Lower Cretaceous (Albian) Glauconitic Sandstone is the lowermost stratigraphic unit of the Upper Mannville interval in southern Alberta. It overlies calcareous and fossiliferous strata of the Ostracode Limestone and is unconformably overlain by feldspathic and lithic-rich fluvial sandstone of the undifferentiated Upper Mannville. In the study area, Glauconitic Sandstone strata comprise three facies associations consisting of prograding shoreface to shallow shelf (FA1I), upper estuary channel fill (FA2) and tidally-influenced abandoned channel fill/interchannel (FA3) deposits. The Jenner Upper Mannville E Pool is a 10 km long by 2 km wide north-south trending conventional oil pool located in Townships 19--20, Range 9W4 in southeastern Alberta. Since its discovery in 1963, the pool has produced 7.3 million barrels of 21.1° API oil and 6.7 billion cubic feet of gas from the Glauconitic Sandstone. The original oil in place is 28.6 mmbbl and estimated remaining reserves are of the order of 700 mbbl.

22

Díaz, Viviana Díaz. "Late cretaceous SR isotopic and sequence stratigraphy of the Dixon Core, Outer Coastal Plain, North Carolina." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/rp/diazv/vivianadiaz.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Bagguley, Joanne Gail. "The application of seismic and sequence stratigraphy to the post-rift megasequence offshore Namibia." Thesis, Online version, 1996. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.388958.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Hampson, Gary James. "Incised valley fills and sequence stratigraphy of selected carboniferous delta systems in the U.K." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283043.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Cavas, Matthew P. "THE QUATERNARY GEOLOGY AND SEQUENCE STRATIGRAPHY OF THE LAKE BONNEVILLE DEPOSITS IN THE MATLIN QUADRANGLE, BOX ELDER COUNTY, NORTHWESTERN UTAH." Ohio University / OhioLINK, 2003. http://www.ohiolink.edu/etd/view.cgi?ohiou1080586528.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Narwich, Charles Bryan. "Event Stratigraphy Based on Geochemical Anomalies within a Mixed-Sediment Backbarrier Sequence, Southern New Jersey." Master's thesis, Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/194335.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Geology
M.S.
Detection of large-magnitude coastal events, especially in wave-dominated retrograding barrier settings, has traditionally relied upon lithological evidence, such as distinct overwash sand layers within the muddy backbarrier sequences. In tide-dominated environments, unconformities in marsh stratigraphy have been interpreted as rapid drowning or erosion events caused by large storms. In transitional mixed-energy backbarrier environments, however, clearly identifiable event horizons are rare, due to unfavorable conditions for peat formation or to a lack of overwash. To address these challenges, the present study utilized X-ray fluorescence (XRF), magnetic susceptibility (MS), and X-ray diffraction (XRD) techniques to identify anomalies within 4-to-7-m-thick sequences recovered from Sewell Point, Cape May, New Jersey. In these cores, at least five peaks were identified that exhibit up to three-to-four-fold increase in Fe (up to 6.2%) and Ti (up to 0.5%) concentrations and a substantial increase in MS values (> 200 μSI). The sand fraction at these intervals exceeds 40% and is represented by moderately well-sorted, negatively-skewed, fine-grained sand (2.7 φ). Fe, Ti, and MS are positively cross correlated due to the relatively high content of sand-sized heavy minerals such as magnetite, rutile, ilmenite and biotite, as well as phlogopite and muscovite mica. These minerals were also identified using a Rigaku Dmax/B X-ray diffraction device. Seven radiocarbon-dated in situ samples of intertidal gastropods and the few available rhizomes indicate that the Sewell Point sequence accumulated over the past 900-1,000 years, at an average sedimentation rate greater than 4.5 mm/yr, which is consistent with its proximity to a historically active tidal inlet. Lithological anomalies at Sewell Point are interpreted as the signatures of episodic large-magnitude sediment fluxes into the paleo-lagoon. The calibrated ages of organic remains (mollusks and rhizomes) constrain chronology and allow interpretation of these stratigraphic layers as event horizons with historical storms of 1594, 1743 and 1821, along with pre-historic storms in the 11th-13th centuries. This research indicates that geochemically diagnostic intervals offer an effective tool for detection of event horizons and their regional correlation in mixed-sediment backbarrier settings.
Temple University--Theses

27

Dilliard, Kelly Ann. "Sequence stratigraphy and chemostratigraphy of the Lower Cambrian Sekwi Formation, Northwest Territories, Canada." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Dissertations/Spring2006/K%5FDilliard%5F042406.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Stubbs, Dreadnaught G. "A Sequence Stratigraphic Analysis of the Allegheny Group (Middle Pennsylvanian),Southeast Ohio." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1524600396756809.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Hines, Frederick Michael. "The sedimentation, tectonics and stratigraphy of the cretaceous/tertiary sequence of northwest Santander, northern Spain." Thesis, University of Oxford, 1986. http://ora.ox.ac.uk/objects/uuid:1d1f8c32-9fd3-44a5-ba6a-d963fa9868c0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The facies evolution of the Cretaceous/Tertiary sequence of NW Santander is considered in relation to the Cretaceous rifting and drifting, and Tertiary partial closure of the Bay of Biscay. Overlying the Palaeozoic basement are the fluvial Lower Triassic Buntersandstone and Upper Triassic Keuper evaporitic mudstone, deposited in a failed rift, extensional basin. Overlying Lower Jurassic carbonates are the syn-rift, continental elastics of the Vealden deposited in halfgrabens cut by transfer faults. The Vealden consists of two formations:- the lower, arenaceous-rich Barcena Mayor Fm. (braided stream environment) and the upper, argillaceous-rich Vega de Pas Fm. (meandering river). Overlying it is the Aptian Umbrera Fm. (calcarenite sheet), the Patrocinio Fm. (shoaling-up ward sandstone/marl alternation), the San Esteban Fm. (requienid/foraminiferal biomicrite of the internal platform) and the marls of the Rodezas Fm. The Upper Aptian Reocin Fm. is a requienid/foraminiferal biomicrite with thinned calcarenites deposited over active, diapiric palaeohighs. After initial marine and then equant calcite (meteoric phreatic) cementation, invasion of meteoric-derived groundwater over palaeohighs generated lenses of sucrosic dolomite in the Reocin Fm. Local mixing of further groundwater and Keuper-derived, sulphate-rich waters in karstic caverns precipitated sparry, baroque dolomite and Pb/Zn sulphides (by bacterial sulphate reduction). The clastic Lower Albian is a transgressive fluvial/estuarine/inner shelf sequence with tidal estuarine channels and sandwaves. The Middle/Upper Albian (syn-drift) has basal calcarenitic tidal sandwaves and is followed by storm/wave-reworked carbonates deposited on a homoclinal ramp. The clastic Lower Cenomanian is an estuarine/inner shelf deposit with tidal sandwaves and sandbars. The Middle/Upper Cenomanian is a storm/tide-dominated calcarenite. Outer shelf marls occur in the Turonian to Middle Campanian and the Upper Campanian to Middle Eocene is a sandy, foraminiferal inner shelf limestone. The Upper Eocene/Oligocene (syn-compression) is a carbonate slope-apron-reefal flysch deposit. It includes hemipelagic marl, neritic-derived calcarenitic turbidites and rudaceous mass flow deposits with highly polymict conglomerates. These were deposited coevally with Keuper piercement and thrust reactivation and date the Pyrenean compressional deformation here.

30

Wadsworth, Jennifer Ann. "Sedimentolgy and sequence stratigraphy in an oversteepened ramp setting : Sobrarbe formation, Ainsa Basin, Spanish Pyrenees." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240820.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

BARTHOLOMEW, ALEXANDER. "CORRELATION OF HIGH ORDER CYCLES IN THE MARINE-PARALIC TRANSITION OF THE UPPER MIDDLE DEVONIAN (GIVETIAN) MOSCOW FORMATION, EASTERN NEW YORK STATE." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1022593337.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Grant, Simon F. "Sequence stratigraphy of a pelagic chalk succession : the Coniacian-Lower Campanian of the Anglo-Paris Basin." Thesis, Durham University, 1998. http://etheses.dur.ac.uk/986/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Wegweiser, Marilyn Diane. "Upper devonian sequence stratigraphy of the western Applalachian basin and geotectonic history of the Lake Crustal block /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488196781731875.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Tiedemann, Nicholas S. "The sequence stratigraphy of the Commanchean-Gulfian interval, Big Bend National Park, West Texas." CardinalScholar 1.0, 2010. http://liblink.bsu.edu/uhtbin/catkey/1569029.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Within Big Bend National Park, the unconformable contact between the Buda Limestone and the overlying Boquillas Formation represents the Commanchean-Gulfian boundary. Previous studies of the geochronology of this interval have relied primarily on provincial ammonite faunas rather than foraminifera, and place the Buda and basal Boquillas in the Lower Cenomanian. Because of its indurated nature, a comprehensive foraminiferal biozonation has not been acquired for the Buda Limestone. Recent revisions to Cretaceous foraminiferal biozonations and taxonomies necessitates a new biostratigraphic study of the Buda - Boquillas interval. The overlapping ranges of F. washitensis, G. bentonensis, G. caseyi, P. appenninica, P. delrioensis, P. stephani, and R. montsalvensis place the Buda within the upper portion of the Early to Middle Cenomanian Th. globotruncanoides Zone. Microkarst found on the surface of the Buda Limestone has been interpreted as representing a subaerial exposure and sequence boundary. However, microkarst-like features can result from subaqueous or intrastratal processes. Carbon and oxygen stable isotope analysis of the lower and middle Buda has indicated a mean δ13C value of 1.73‰ VPDB, which is in line with other values reported from the Lower Cenomanian. The top 2.6m of Buda contains a 0.62‰ negative δ13C shift from 1.88‰ VPDB to 1.26‰ VDPB in a 40 cm interval, expected if subaerial exposure occurred. Higher variation in measured carbon isotope values beneath the contact also lend evidence for meteoric alteration. The standard deviation in δ13C values from the top 2.8 m of the Buda is 0.207, which is 2.16 times larger than the rest of the studied section at 0.096. The Buda contains a shallow pelagic-dominated fauna of heterohelicids (45-90%), globigerinellids (3-37%), and hedbergellids (4-22%). Intermediate-depth globigerinellids display an initial increase followed by a marked decrease in abundance upsection, interpreted as sea level transgression and regression, respectively. The lower contact of the Buda with the Del Rio Clay has been previously interpreted as a subaerial exposure, and a P:B break from ~0% planktonics in the upper Del Rio to ~80% in the Buda supports this claim. This study therefore interprets both the upper and lower contacts of the Buda as sequence boundaries. The overlying 1.2 m Boquillas is nearly devoid of benthics and represents a deeper assemblage including the double-keeled Dicarinella sp., as well as several Upper Cenomanian (D. algeriana Subzone) species. Based on foraminiferal data, the duration of the Buda - Boquillas unconformity is roughly equivalent to the missing Th. reicheli and Th. greenhornensis Biozones, or a sizable portion of the Middle Cenomanian.
Systematic paleontology -- Biostratigraphy of the Buda Limestone -- Biostratigraphy of the lowermost Boquillas Formation -- Stable isotope geochemistry.
Department of Geological Sciences

35

McLAUGHLIN, PATRICK I. "CRATONIC SEQUENCE STRATIGRAPHY: ADVANCES FROM ANALYSIS OF MIXED CARBONATE-SILICICLASTIC SUCCESSIONS." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1147959013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Fitzgerald, Devin R. "Clay Mineralogy, Provenance, and Sequence Stratigraphy of Upper Ordovician Shales in Eastern Ohio." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1449489305.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Badescu, Adrian Constantin. "Reservoir characterization of the Miocene Starfak and Tiger Shoal fields, offshore Louisiana through integration of sequence stratigraphy, 3-D seismic, and well-log data." Access restricted to users with UT Austin EID, 2002. http://wwwlib.umi.com/cr/utexas/fullcit?p3108452.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Koch, Jesse. "Sequence stratigraphy and facies analyses of the Dakota Formation, Jefferson County, Nebraska and Washington County, Kansas." Thesis, University of Iowa, 2007. https://ir.uiowa.edu/etd/175.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The estuarine to fluvial sediments of the mid-Cretaceous (Late Albian/Early Cenomanian) Dakota Formation of Jefferson Co., Nebraska (NE) and Washington Co., Kansas (KS) were deposited in a marginal marine setting along the eastern margin of the Cretaceous Western Interior Seaway. Three depositional facies based on various lithic content are recognized in the study area: Facies 1: Fluvial Channel Facies, Facies 2: Paleosol/Interfluve Facies, and Facies 3: Bay Head Delta/Estuarine Facies. The facies interpretation helped confirm that the Dakota Formation was deposited in a marginal marine setting in which low-gradient fluvial systems supplied a wave-dominated, estuary system. Petrographic analysis of the Fluvial Channel Facies concluded that the sandstones can be classified as quartz-rich lithic arkose. These findings differ slightly from previous studies on Cenomanian Dakota Formation strata in Thurston Co., NE. Palynostratigraphic, subsurface, and sedimentologic evidence helped to delineate a more accurate sequence stratigraphic framework for the Dakota Formation in the study area. Three large-scale, unconformity-bounded, sequences (D0, D1, and D2) are recognized, within which deposits of the transgressive and falling stage systems tracts are preserved in the Dakota Formation in the study area. While no physical deposits exist for the falling stage and lowstand systems tracts, evidence for their past occurrence can be observed by the erosional nature of the sequence boundaries. Detailed analysis of the systems tracts framework allows delineation of a generalized sea-level curve for the Dakota Formation in the study area. Analysis of the sequence stratigraphic framework revealed a Late Albian/Early Cenomanian sea-level fall that subsequently created valley incisions of over 25 m into the Late Albian D1 sequence. A careful literature review combined with sequence stratigraphic evidence suggests that a geologically fast-acting eustatic sea-level mechanism lowered worldwide sea-levels by more than 25 m from Late Albian into Early Cenomanian time. A reevaluation of the mid-Cretaceous "greenhouse" world suggests that a glacioeustatic component to the observed sea-level changes may have occurred. A Southern Hemispheric polar ice sheet with limited extent and volume compared to "icehouse" continental ice sheets, along with global alpine glaciers fed by wet climate cycles are hypothesized to account for sea-level fluctuations that resulted in valley incision and subsequent filling in the study area.

39

Brown, Thomas R. "Benthic foraminiferal paleoecology and sequence stratigraphy across the Cretaceous-Tertiary boundary at Braggs, Alabama." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/845938.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Southern Alabama holds one of the world's most complete shallow shelf Cretaceous-Tertiary boundary sections. The boundary is exposed in a sequence of marl-limestone interbeds in a roadcut south-east of Braggs in Lowndes County, Alabama. Benthic foraminifera were extracted in 10cm intervals to obtain a high-resolution record of assemblage succession across this controversial boundary. A local sea level curve was then formulated using previous paleobathymetric foraminiferal assemblage models from the Gulf Coast and the Atlantic Coastal margin. Sea-level fluctuations thus evident have revealed a fourth-order cycle similar to those found by Briskin and Fluegeman (1990) with an average period of around 430 kyr through the Paleocene. This cycle includes a drop from outer slope to middle shelf conditions in the latest Cretaceous and a subsequent increase from inner shelf to outer shelf conditions in the earliest Paleocene. Within this cycle are several fifth-order cycles that are interpreted as having a periodicity of roughly 100 kyr. Sea-level cycles with Milankovitch frequencies occurring on an ice-free Paleocene Earth lend support to the concept of astronomical forcing of climate and thus sea-level.
Department of Geology

40

Kessel, Benjamin J. "Lower Paleozoic Sequence Stratigraphy, Deposystems and Paleogeography of Northwestern Ordos Basin, North China." DigitalCommons@USU, 2006. https://digitalcommons.usu.edu/etd/6743.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The Ordos basin rests upon the North China Block and is one of the largest sedimentary basins in north China, with more than 15 km of Phanerozoic strata. Published estimates suggest that over 2000 m of carbonates and lesser amounts of siliciclastics were deposited on the North China Carbonate Platform (NCCP) from the Lower Can1brian through the Middle Ordovician. However, lower Paleozoic facies successions and deposystems of northwestern Ordos basin remain poorly represented in western literature. This paper constrains depositional environments, lithologies, facies relationships and sea-level history of the northwestern part of the North China block (NCB) in an effort to further document the Early Paleozoic geologic history of western Ordos basin. New stratigraphic data come largely from measured sections in the Zhuozi Shan and Helan Shan in northwest Ordos basin. Strata in the mountains of northwestern Ordos are divided into eleven lithofacies assemblages, distinguished by lithology, stacking patterns and sedimentary structures. Lithofacies assemblages in northwest Ordos are grouped into four lithostratigraphic units that make up the composite type section. Unit A is dominantly composed of shale and mudrock lithofacies, Unit B is dominantly composed of thin-bedded lime mudstone and banded and bioturbated lime mudstone to wackestone, Unit C is dominantly composed of quartz sandstone and dolostone and Unit D is dominantly composed of fossiliferous packstone. These four units were observed in all lower Paleozoic sections of the Helan Shan and Zhuozi Shan. Deposition of Middle Cambrian through lowermost Lower Ordovician strata in northwest Ordos basin occurred on a storm-influenced, mixed siliciclastic and carbonate, shallow-water ramp. Lateral trends in quartz sandstone, paleokarsts, thrombolites and section thickness suggest that accommodation space increased to the south. The depositional architecture changed in the Middle Ordovician to a carbonate shelf environment. The sea-level history of northwestern Ordos shows transgression through the Late Can1brian, regression in the Early Ordovician, followed by a Middle Ordovician transgression, corresponding with North American sea level signatures. Lower Paleozoic sections in northwestern Ordos basin are broadly similar to those previously described in western literature. However, based upon stratigraphic data, shoreline trends of the NCCP model are proved inapplicable to northwestern Ordos. There is no evidence for lower Paleozoic tectonics such as aulacogen-controlled subsidence and platform tilting as described by previous workers. The sea-level history interpreted for northwest Ordos basin is more similar to North American curves than to the North China Carbonate Platform model, suggesting a eustatic control on lithofacies stacking patterns in northwest Ordos basin.

41

Harrington, Jason E. M. "Sequence stratigraphy and sedimentology of uppermost Southesk and Sassenach formations (Upper Denovian), Boule and Bosche Ranges, Jasper National Park." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20570.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Devonian Winterburn strata in the Boule and Bosche Ranges of eastern Jasper National Park consist of two unconformity bounded, 45 m thick carbonate dominated depositional sequences, the Arcs Member (Nisku) and the Ronde Member (Calmar/Blue Ridge). Earliest Famennian clastics of the Sassenach Formation directly overlie the Ronde and this contact forms the Frasnian/Famennian boundary. Sampling for conodont biostratigraphy in three sections indicates that the Arcs and Ronde are Upper rhenana in age.
Arcs, Ronde, and Sassenach strata were deposited on a gently sloping carbonate ramp to platform ranging from shallow subtidal to peritidal depositional environments. Argillaceous limestones and shales are the dominate lithotype of the Mount Hawk Formation. Shallow subtidal limestones consisting of floatstones and rudstones interbedded with packstones and wackestones comprise most of the Arcs Member. Arcs strata consist of at least 4 depositional cycles and represent a shallowing upward sequence from outer shallow slope fossiliferous limestones to back reef lagoonal grainstones. Two previously undocumented Arcs patch reefs were described, the limestone Brule reef or bank in the southern Boule Range and the dolomitized Moosehorn reef in the central region of the Bosche Range. The Ronde Member is comprised of shallow subtidal limestones and siltstones with intertidal silty limestones occurring less frequently and predominately at the top. The Ronde consists of two carbonate shallowing upward cycles. FA 6 A intertidal limestones and fine grained sandstones comprise the Sassenach Formation which consists of two main depositional cycles and ranges from 20 m thick in the Bosche Range to less than 5 m thick in the Boule Range. (Abstract shortened by UMI.)

42

MCLAUGHLIN, SUSANNAH. "SEQUENCE STRATIGRAPHY AND FAUNAL PATTERNS OF THE MIDDLE LEXINGTON LIMESTONE (UPPER ORDOVICIAN) IN CENTRAL KENTUCKY." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1141314237.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Isnard, Hélène. "Application des traceurs isotopiques Pb-Pb, Sm-Nd et Lu-Hf à la compréhension de l'histoire archéenne du bouclier canadien et à la formation de la croûte continentale /." Thèse, Chicoutimi : Montréal : Université du Québec à Chicoutimi ;. Université du Québec à Montréal, 2003. http://theses.uqac.ca.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Thèse (D.R.Min.) -- Université du Québec à Chicoutimi, programme extensionné à l'Université du Québec à Montréal, 2003.
Bibliogr.: f. 203-204. Document électronique également accessible en format PDF. CaQCU

44

Morgan, Glenn Douglas School of Biological Earth &amp Environmental Science UNSW. "Sequence stratigraphy and structure of the tertiary limestones in the Gulf of Papua, Papua New Guinea." Awarded by:University of New South Wales. School of Biological, Earth and Environmental Science, 2005. http://handle.unsw.edu.au/1959.4/22913.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

A sequence stratigraphic study was conducted on the Mendi and Darai Limestone Megasequences in the foreland area of the Papuan Basin in Papuan New Guinea. It involved the integrated use of seismic, wireline log, well core and cuttings, strontium isotope age and biostratigraphic data. This study enhanced the understanding of the structure, stratigraphy and depositional architecture of the limestones, and the morphology of the basin at the time of deposition. The results of the study were integrated with published geological and tectonic models for the Papuan Basin to develop a consistent and coherent model for the depositional history of the limestones. Eleven third-order sequences were delineated within the Mendi and Darai Limestone Megasequences. Eight depositional facies were interpreted across these sequences, namely deep-shelf, shallow-shelf, backreef, reef, shoal, forereef, basin margin and submarine fan facies. Each facies was differentiated according to seismic character and geometry, well core and cuttings descriptions, and its position in the depositional framework of the sequence. Deposition of the Mendi Limestone Megasequence commenced in the Eocene in response to thermal subsidence and eustatic sea-level rise. Sedimentation comprised open-marine, shallow-water, shelfal carbonates. During the middle of the Oligocene, the carbonate shelf was exposed and eroded in response to the collision of the Australian and Pacific Plates, or a major global eustatic sea-level fall. Sedimentation recommenced in the Late Oligocene, however, in response to renewed extensional faulting and subsidence associated with back-arc extension. This marked the onset of deposition of the Darai Limestone Megasequence in the study area. The KFZ, OFZ and Darai Fault were reactivated during this time, resulting in the oblique opening of the Omati Trough. Sedimentation was initially restricted to the Omati Trough and comprised deep and shallow-marine shelfal carbonates. By the Early Miocene, however, movement on the faults had ceased and an extensive carbonate platform had developed across the Gulf of Papua. Carbonate reef growth commenced along topographic highs associated with the KFZ, and led to the establishment of a rimmed carbonate shelf margin. Shallow to locally deeper-marine, shelfal carbonates were deposited on this shelf, and forereef, submarine fan and basin margin carbonates were deposited basinward of the shelf margin. The Uramu High and parts of the Pasca High became submerged during this time and provided sites for pinnacle reef development. During the middle of the Early Miocene, a major global eustatic sea-level fall or flexure of the Papuan Basin associated with Early Miocene ophiolite obduction subaerially exposed the carbonate shelf. This resulted in submarine erosion of the forereef and basin margin sediments. Towards the end of the Early Miocene, however, sedimentation recommenced. Shallow-marine, undifferentiated wackestones and packstones were deposited on the shelf; forereef, submarine fan and basin margin sediments were deposited basinward of the shelf margin; and reef growth recommenced along the shelf margin and on the Pasca and Uramu Highs. By the end of the Early Miocene, however, the pinnacle reef on the Pasca High had drowned. During the middle of the Middle Miocene, subtle inversion associated with ophiolite obduction subaerially exposed the carbonate shelf, and resulted in submarine erosion of the forereef and basin margin sediments. Sedimentation recommenced towards the end of the Middle Miocene, however, in response to eustatic sea-level rise and flexure of the crust associated with foreland basin development. Shallow marine, undifferentiated wackestones, packstones and grainstones were deposited on the shelf; carbonate shoals were deposited along the shelf margin; and forereef, submarine fan and basin margin carbonates were deposited basinward of the shelf margin. Carbonate production rapidly outpaced accommodation space on the shelf during this time, resulting in highstand shedding and the development of a large prograding submarine fan complex basinward of the shelf margin. By the Late Miocene, carbonate deposition had ceased across the majority of the study area in response to a major global eustatic sea-level fall or inversion associated with terrain accreation events along the northern Papuan margin. Minor carbonate deposition continued on parts of the Uramu High, however, until the middle of the Late Miocene. During the latest Miocene, clastic sediments prograded across the carbonate shelf, infilling parts of the foreland basin. Plio-Pleistocene compression resulted in inversion and erosion of the sedimentary package in the northwestern part of the study area. In the southeastern part of the Papuan Basin, however, clastic sedimentation continued to the present day.

45

Klasen, Rebecca Lynn. "SEQUENCE STRATIGRAPHIC ANALYSIS OF THE LOWER AND UPPER BRUSH CREEK INTERVAL (LATE PENNSYLVANIAN), SOUTHEASTERN OHIO." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1167764282.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Jensen, Christopher Ryan. "Sequence Stratigraphy, Depositional Environments and Geochemistry of the middle Cambrian Bloomington Formation in Northern Utah." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4231.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The Bloomington Formation (~425 m thick) is a latest Middle Cambrian (~506.5-505 Ma), mixed, warm water, continental-shelf carbonate and fine-grained siliciclastic unit on the Cordilleran passive margin exposed in northern Utah and southern Idaho. Thicknesses of the Bloomington Formation at Calls Fort Canyon are 111 m in the Hodges Shale Member, 230 m in the middle limestone Member, and 84 m in the Calls Fort Shale Member. The Hodges Shale and Calls Fort Shale Members are shale dominated and represent outer detrital belt deposition. The Logan Canyon outcrop of the Hodges Shale Member shows an environmental change that may represent a transition form an open marine facies into what appears to be a lagoonal facies. The middle limestone member represents shallow marine carbonate deposition on the passive margin shelf. The Bloomington Formation has a low fossil abundance and diversity when compared to correlative units such as the Wheeler and Marjum Formations. There are, however, 10-50 cm thrombolite bioherms, associated with Girvanella oncoliths. These bioherms indicate a shallow-water carbonate facies that experienced a small flooding event that gives the bioherms time and proper conditions to build up. δ18O and δ13C results both show positive and negative shifts with δ13CVPDB values of 1.0 to -4.7 per mil and δ18OVSMOW values of -12.9 to -20.8 per mil. A negative δ13C excursion in the Hodges Shale may correlate to a similar excursion in the base of the Wheeler Formation that represents the DICE event. Lower and Middle Cambrian Formations in the Wellsville Range have been interpreted as being part of a second order transgressive system and containing third and higher-order cycles. The contact of the Hodges Shale Member and the underlying Blacksmith Dolomite represents a flooding surface and a sequence boundary, followed by a third order cycle. Flooding is indicated by shale deposits that overlie carbonates with a shallowing upward trend. High frequency fourth or fifth order cycles are expressed as laminated shale and thick-bedded limestones as well as thick packages of interbedded, thin limestones and shales. A PCA analysis of thin section point counts indicates that the limestone lithologies of all three members repeat throughout the entire Formation, suggesting cycles of relative sea level rise that cause repeating facies.

47

Richardson, Jeffrey G. "Miospore biostratigraphy, sequence stratigraphy, and glacio-eustatic response of the Borden Delta (Osagean; Tournaisian/Visean) of Kentucky and Indiana, U.S.A." Columbus, OH : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1048176261.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Thesis (Ph. D.)--Ohio State University, 2003.
Title from first page of PDF file. Document formatted into pages; contains xvii, 275 p.: ill. Includes abstract and vita. Advisor: W.I. Ausich, Dept. of Geological Sciences. Includes bibliographical references (p. 186-208).

48

Ritter, Geoffrey William. "Lithofaces and Sequence Architecture of the Upper Paradox Formation (Middle Pennsylvanian)in the Subsurface Northern Blanding Subbasin, Paradox Basin, Utah." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7319.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

THE PARADOX Basin is a northwest-southeast trending intracratonic basin that formedin southwestern Colorado, southeastern Utah and adjacent parts of Arizona and New Mexicoduring the late Paleozoic Era. During rise of the adjacent Uncompahgre Uplift (Ancestral RockyMountains) the rapidly subsiding basin was filled with over 2000 m of Permo-Pennsylvaniansediments. Stacked depositional sequences accumulated in three roughly parallel facies belts: anortheastern clastic belt (adjacent to uplift), a central salt and black shale belt, and asouthwestern carbonate belt. Over 400 million barrels of oil have been extracted from upperParadox (Desert Creek and Ismay) carbonates in the southern Blanding Subbasin (Greater AnethField) since 1956. The sedimentology and sequence stratigraphy of Paradox Shelf strata on thewalls of the San Juan River gorge and in the subsurface Aneth Buildup are well documented.Less well documented are the stratigraphy and facies architecture of basinward extensions ofupper Paradox sequences in the northern part of the Blanding Subbasin.Detailed analysis of the lower and upper Desert Creek and lower and upper Ismay 4thordersequences from three cores (Long Point, Lewis Road, Cedar Point) demonstrate theexistence of distinctive basinward depositional trends. Compared to sequences exposed on theParadox Shelf (San Juan River outcrops) and the Aneth Buildup, sequences in the more distalnorthern Blanding Subbasin are thinner, are dominated by muddy carbonate facies, displaylimited occurrences of porous phylloid-algal and oolitic carbonates, contain thicker, morecomplete occurrences of black shale, and possess distinctive suites of lowstand facies (quartzsandstone on the shelf, bedded and nodular evaporates in the basin). Vertically, the four 4th-ordersequences display 2nd-order progradation of the Paradox Shelf through Desert Creek and Ismaytime. Carbonate-starved sequences (4th order) and parasequences (5th order) comprised of muddominatedfacies are succeeded upward by thicker, more grain-rich sequences andparasequences. The implications for the petroleum system relative to established oil and gasfields is that conventional reservoir rock facies are rare, except in small, isolated buildups.Meteoric diagenesis associated with 4th-order lowstands of sea level has reduced overallpermeability. Lowstand conditions also promoted limited precipitation of pore-occludingevaporite cement. The maximum-flood Chimney Rock, Gothic and Hovenweep shales arethicker and contain a more complete succession of basinal cycles than updip occurrences of thesepetroleum source rocks. A suite of samples from the Gothic Shale from the Cedar Point coreindicate higher burial maturity (kerogen has mostly been converted to gas) compared to valuesderived from the outcrop belt and more proximal subsurface samples.

49

Brettle, Matthew John. "Sedimentology and high-resolution sequence stratigraphy of shallow water delta systems in the early Marsdenian (Namurian) Pennine Basin, Northern England." Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367677.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Maguire, Henry C. "Application Of Geophysical And Geochronological Methods To Sedimentologic And Stratigraphic Problems In The Lower Cambrian Monkton Formation: Northwestern Vermont." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/938.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The Monkton Formation of the western shelf stratigraphic sequence in Vermont (VT) is identified as a Lower Cambrian regressive sandstone unit containing parasequences recording tidal flat progradation. Previous workers identified cycles believed to represent parasequences in a portion of a 1034' deep geothermal well drilled at Champlain College in Burlington, Vermont. For this study, both outcrop and well geophysical surveys were completed to better identify gamma emission curves and relative values for parasequences and select lithologies that are indicators of bathymetry and sea level. After using physical stratigraphic techniques to assemble a composite stratigraphic section for the Monkton Formation, analysis of the gamma emission curve and relative gamma values resulted in the identification and characterization of parasequences and select lithologies within the Monkton. Interpretation of bathymetry-sensitive lithologies along with parasequence architecture and thickness trends reveals three distinctive intervals over the thickness of the Monkton. It is recognized that the succession of these intervals represents an overall decreasing rate in accommodation space generation through Monkton deposition. Previous workers have suggested that biostratigraphic relationships of the Monkton Formation to the Potsdam Group in New York (NY) suggest that that they would be at least partially correlative. To further refine age relationships and constrain and compare the provenance of the Vermont stratigraphy locally and regionally, zircon samples were collected from the Monkton and the overlying Danby Formations and radiometric age determinations were completed by laser ablation–inductively coupled plasma mass spectrometry (LA-ICPMS) at University of Arizona Laserchron Center. Zircon age probability distribution curves show two dominate age peaks between 1.05-1.09 Ga and 1.15-1.18 Ga for the Monkton and Danby suggesting either a continuity of provenance through the Cambrian or the cycling of the Monkton's sand. The 1.05-1.09 Ga age range corresponds to rocks generated during the Ottawan Orogeny while the 1.15-1.18 Ga range is associated with the Shawinigan Orogeny and anorthosite-mangerite-charnockite-granite (AMCG) plutonism. Dominant age peaks in the Vermont samples between 1.15-1.18 Ga are similar to the 1.16 Ga age peak reported by other workers from the Altona and Ausable Formations of the Potsdam Group of New York. The shared dominant age peak and close proximity of the Vermont and New York stratigraphy may suggest a primarily shared provenance.

Dissertations / Theses on the topic 'Sequence stratigraphy Geology'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles