Relevant bibliographies by topics / Sediments (Geology) Victoria, Southeastern

Academic literature on the topic 'Sediments (Geology) Victoria, Southeastern'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Sediments (Geology) Victoria, Southeastern"

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Webb, J. A., D. Fabel, B. L. Finlayson, M. Ellaway, Li Shu, and H. P. Spiertz. "Denudation chronology from cave and river terrace levels: the case of the Buchan Karst, southeastern Australia." Geological Magazine 129, no. 3 (May 1992): 307–17. http://dx.doi.org/10.1017/s0016756800019245.

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AbstractDetailed mapping of surface and underground karst features at Buchan, in eastern Victoria, has shown that the three river terraces along the Buchan River can be correlated with three levels of epiphreatic development in the nearby caves. Each level represents a stillstand in the denudational history of the area. Uranium series dating of speleothems and palaeomagnetic studies of cave sediments indicate that all three stilistands are more than 730 ka old. The periods of incision separating the stillstands were probably the result of active tectonic uplift. This contrasts with some northern parts of the Southeastern Highlands, which have been stable since the Eocene. The overall amount of incision and uplift at Buchan is small, indicating that the majority of scarp retreat in this section of the highlands must have occurred earlier. The denudation history of the Buchan area over the last 730 ka has seen only 2–3 m of incision, despite the major climatic and sea-level changes that have occurred in that time. Whereas most karst landscapes in the Northern Hemisphere have been extensively modified during the late Pleistocene, the Buchan karst was little affected, and its geomorphology has an older origin.
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Deev, E. V., I. D. Zolnikov, and S. A. Gus’kov. "Seismites in Quaternary sediments of southeastern Altai." Russian Geology and Geophysics 50, no. 6 (June 2009): 546–61. http://dx.doi.org/10.1016/j.rgg.2008.10.004.

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Holdgate, G. R., T. A. G. Smith, S. J. Gallagher, and M. W. Wallace. "Geology of coal-bearing Palaeogene sediments, onshore Torquay Basin, Victoria." Australian Journal of Earth Sciences 48, no. 5 (October 2001): 657. http://dx.doi.org/10.1046/j.1440-0952.2001.00888.x.

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Holdgate, G. R., T. A. G. Smith, S. J. Gallagher, and M. W. Wallace. "Geology of coal-bearing Palaeogene sediments, onshore Torquay Basin, Victoria." Australian Journal of Earth Sciences 48, no. 5 (October 2001): 657–79. http://dx.doi.org/10.1046/j.1440-0952.2001.485888.x.

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COLMAN, STEVEN M., ANNE F. CHOQUETTE, JOHN N. ROSHOLT, GIFFORD H. MILLER, and D. J. HUNTLEY. "Dating the upper Cenozoic sediments in Fisher Valley, southeastern Utah." Geological Society of America Bulletin 97, no. 12 (1986): 1422. http://dx.doi.org/10.1130/0016-7606(1986)97<1422:dtucsi>2.0.co;2.

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Al-Ankaz, Zinah, Ruaa Muslim, Najah Al-Ghasham, and Hasan Jasim. "Mineral Composition and Provenance of Al-Chabbab Stream Sediments, Wasit, Southeastern Iraq." Iraqi Geological Journal 55, no. 2E (November 30, 2022): 230–42. http://dx.doi.org/10.46717/igj.55.2e.16ms-2022-11-30.

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A mineralogical study was carried out on the sediments of Al-Chabbab stream, one of the seasonal tributaries of the Tigris River, southeast of Wasit, Iraq. This study includes the sediments of the Tigris River sited before and after the mouth of the Al-Chabbab stream. Light and heavy minerals are determined by using polarized microscope and X-Ray Diffraction technique. The light minerals are composed of quartz, rock fragments, and feldspar, which are the prevailing compositions in all samples. The quantity of monocrystalline quartz in the Tigris River was more than Al- Chabbab stream, which refered to the supplied of felsic sours rocks sediments to the Tigris River more than the sediments of Al-Chabbab stream. The average value of minerological maturity index and ZTR index of Al-Chabbab stream, Tigris and Al-Chabbab inflow samples indicates that clasts generally are sub-mature. The Tigris River clasts have high mineralogical maturity index, which refers to the long transportation. Heavy mineral accumulation of the recent sediments from Al-Chabbab inflow and the Tigris River is composed of opaque and transparent minerals including epidotes; pyroxenes; amphiboles (hornblende and glaucophane); zircon; garnet; tourmaline; rutile; kyanite; staurolite; flaky minerals (muscovite; biotite and chlorite) and celestite (glaucophane and celestite are absent in the sediment of Tigris River). Based on the mineralogical signatures, the light and heavy minerals reflect metamorphic, mafic and felsic igneous rocks, of the active margin of the unstable shelf, in addition to the carbonate, evaporite and mud rocks that could be sourced from the Euphrates, Fatha and Injana formations.
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Carranza-Edwards, A., L. Rosales-Hoz, and A. Monreal-Gómez. "Suspended sediments in the southeastern Gulf of Mexico." Marine Geology 112, no. 1-4 (June 1993): 257–69. http://dx.doi.org/10.1016/0025-3227(93)90172-r.

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Druzhinina, Olga, Laura Gedminienė, and Kasper van den Berghe. "Metals in Lake Sediments as Indicators of Human Activities in Prehistory: Case Study of the Southeastern Baltic, Kamyshovoe Lake." Minerals 12, no. 10 (September 27, 2022): 1216. http://dx.doi.org/10.3390/min12101216.

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This paper presents the results of geochemical research on the Kamyshovoe Lake sediments (Kaliningrad oblast, Russian Federation). The study of Pb, Ni, Zn, As, Co and Cu concentration and enrichment factors (EF) combined with the results of the lithological, geochronological, magnetic susceptibility and microcharcoal studies revealed possible anthropogenic sources of metals in southeastern Baltic lake sediments from the Neolithic to the Medieval period. Increasing Co EF value and peaks of the Pb EF in Kamyshovoe Lake sediments, starting from ~6000 cal yr BP in the Neolithic, probably show the growing role and usage of metals as dyes and fixatives. Since ~3100 cal yr BP, in the end of the Bronze Age, a simultaneous increase in the content of indicators of metallurgical production Pb, Ni, Zn and As, coinciding with growth of the microcharcoal curve, can show a growing demand for metal objects in the southeastern Baltic region and the input of the local or regional ancient metallurgy into the metal pollution of the lake sediments.
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Ewers Lewis, Carolyn J., Mary A. Young, Daniel Ierodiaconou, Jeffrey A. Baldock, Bruce Hawke, Jonathan Sanderman, Paul E. Carnell, and Peter I. Macreadie. "Drivers and modelling of blue carbon stock variability in sediments of southeastern Australia." Biogeosciences 17, no. 7 (April 16, 2020): 2041–59. http://dx.doi.org/10.5194/bg-17-2041-2020.

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Abstract. Tidal marshes, mangrove forests, and seagrass meadows are important global carbon (C) sinks, commonly referred to as coastal “blue carbon”. However, these ecosystems are rapidly declining with little understanding of what drives the magnitude and variability of C associated with them, making strategic and effective management of blue C stocks challenging. In this study, our aims were threefold: (1) identify ecological, geomorphological, and anthropogenic variables associated with 30 cm deep sediment C stock variability in blue C ecosystems in southeastern Australia, (2) create a predictive model of 30 cm deep sediment blue C stocks in southeastern Australia, and (3) map regional 30 cm deep sediment blue C stock magnitude and variability. We had the unique opportunity to use a high-spatial-density C stock dataset of sediments to 30 cm deep from 96 blue C ecosystems across the state of Victoria, Australia, integrated with spatially explicit environmental data to reach these aims. We used an information theoretic approach to create, average, validate, and select the best averaged general linear mixed effects model for predicting C stocks across the state. Ecological drivers (i.e. ecosystem type or ecological vegetation class) best explained variability in C stocks, relative to geomorphological and anthropogenic drivers. Of the geomorphological variables, distance to coast, distance to freshwater, and slope best explained C stock variability. Anthropogenic variables were of least importance. Our model explained 46 % of the variability in 30 cm deep sediment C stocks, and we estimated over 2.31 million Mg C stored in the top 30 cm of sediments in coastal blue C ecosystems in Victoria, 88 % of which was contained within four major coastal areas due to the extent of blue C ecosystems (∼87 % of total blue C ecosystem area). Regionally, these data can inform conservation management, paired with assessment of other ecosystem services, by enabling identification of hotspots for protection and key locations for restoration efforts. We recommend these methods be tested for applicability to other regions of the globe for identifying drivers of sediment C stock variability and producing predictive C stock models at scales relevant for resource management.
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Fegan, N. E., D. T. Long, W. B. Lyons, M. E. Hines, and P. G. Macumber. "Metal partitioning in acid hypersaline sediments: Lake Tyrrell, Victoria, Australia." Chemical Geology 96, no. 1-2 (March 1992): 167–81. http://dx.doi.org/10.1016/0009-2541(92)90127-q.

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Dissertations / Theses on the topic "Sediments (Geology) Victoria, Southeastern"

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Sharpe, David Robert. "Glacial sediments and landforms, southern Victoria Island, Northwest Territories, Canada." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7846.

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Wollaston Peninsula and most of southern Victoria Island comprise Palaeozoic carbonate lowlands, scarps, and tableland situated between rises and arches of underlying Precambrian sedimentary and igneous rocks. Quaternary sediments are hummocky, thick and ice-cored near escarpments where ice flow resistance, thrusting and meltwater concentrated glacial debris; thinner, streamlined drift occurs in lowlands. Quaternary sediments are mainly Late Wisconsinan in age. Glacial sediments predominate but surficial raised marine and periglacial sediments are noted. Fluvial modification of the landscape is minor. Many of the spectacular glacial landforms on Wollaston Peninsula are streamlined and indicate formation under thick, warm-based (i.e. free subglacial water) glaciers. A set of distinctive landforms, including ground moraine (with small moraines and marginal channels), hummocky moraine, lateral moraines, and streamlined forms, relates to varying flow conditions within one major glacial advance. Stratified drift within moraines indicates the importance of glaciofluvial processes in addition to ice action. Collectively, these landforms record ice-marginal retreat, marginal stagnation following compressional flow, surging, flooding and regional stagnation during deglaciation. Freeze-on and ice stagnation trapped extensive bodies of drift-rich ice in zones of hummocky moraine. Arborescent networks of narrow eskers record subglacial meltwater drainage beneath major ice lobes and long broad eskers record subaerial deposition by meltwater of mainly supraglacial derivation. Late glacial events are dated relative to the incursion of the sea during deglaciation of northwest areas of Wollaston Peninsula by about 12 000 BP. Active ice-marginal conditions existed just before 10 000 BP, during formation of the large Colville moraines. Ice downwasted in the area causing glacier thinning. Prominent ground-ice features include pingos, thermokarst scars, and debris-flow lobes. Ground ice occurs as massive icy bodies, ice-wedge ice, and buried pingo ice. Based on its setting in hummocky moraine, its stratigraphy, debris content, and isotopic composition, the massive ice is likely buried glacial ice. Landscape modification by thermokarst erosion has produced ubiquitous diamictons similar to till, and landforms similar to glacial forms. Thick ground ice bodies exist only above marine limit and the limits of streamlined landforms because permafrost degradation occurred below these limits. Widespread thaw slumps and large-scale thermal contraction cracks also indicate ice-cored terrain.
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Basapuram, Laxmi Gayatri Devi. "Lake Victoria - Carbon, Nitrogen, Phosphorus and Stable Isotope (δ13C) comparison between lake and catchment sediments." Thesis, Linköpings universitet, Tema Miljöförändring, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149283.

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Lake Victoria situated in East Africa faces an acute problem with eutrophication. Many reasons like agricultural production, industrialization, anthropogenic processes, the introduction of species, and economic activities have caused a stress to the overall well-being of the lake. Excess carbon, nitrogen, and phosphorus drive an increase in productivity which affects eutrophication. Previous studies on sediments and nutrient concentrations in the lake have concluded that nutrient concentrations increase due to release from the catchment. This study focuses on catchment sediments collected from four different sites and compares the results with sediments from two additional sites in the lake. The sediment core from Siaya indicates the highest concentrations of TOC (180 g/kg), TN (13 g/kg) and TP (17000μg/L). It is a rural site and poor agricultural practices such as the burn and slash, use of too many fertilizers, clearance of land, atmospheric deposition and precipitation increase elemental concentrations in the sediments compared to the more urban sites. In the lake sediments, the BILL core had higher concentrations of TP (430g/kg) and TN (16 g/kg) compared to the other site (LV-95) which is located far away from the margins of the lake. This core, however, had high TOC levels (180g/kg). The increase of nutrient levels in lake sediments is thought to be due to non-point sources from the catchment. Analyses of stable carbon isotope were used to infer the different organic matter source in the sediments. Based on the range of values for δ13C vs. C/N it is inferred that aquatic algal production and C4 vascular plants are the dominant sources for the organic matter input. The chemical characterization of catchment and lake sediments provides a qualitative link to nutrient influx and eutrophication in the lake.
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Larrahondo-Cruz, Joan Manuel. "Carbonate diagenesis and chemical weathering in the Southeastern United States: some implications on geotechnical behavior." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42912.

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The Savannah River Site (SRS) deposits in the Southeastern US between 30-45 m of depth are calcium carbonate-rich, marine-skeletal, Eocene-aged sediments with varying clastic content and extensive diagenetic alteration, including meter-sized caves that coexist with brittle and hard limestone. An experimental investigation including geotechnical (P- and S-wave velocities, tensile strength, porosity) and geochemical (EDS, XRD, SEM, N2-adsorption, stable isotopes, K-Ar age dating, ICP-assisted solubility, groundwater) studies highlighted the contrast between hard and brittle limestones, their relationship with cave formation, and allowed calculation of parameters for geochemical modeling. Results demonstrate that brittle and hard limestones bear distinct geochemical signatures whereby the latter exhibits higher crystallinity, lower clastic load, and freshwater-influenced composition. Results also reveal carbonate diagenesis pathways likely driven by geologic-time seawater/freshwater cycles, microorganism-driven micritization, and freshwater micrite lithification. The second section of this investigation dealt with SRS surface soils which are largely coarse-grained and rich in iron oxides with various degrees of maturity. These soils were simulated in the laboratory using Ottawa sands that were chemically coated with goethite and hematite. Surface (SEM, AFM, N2-adsorption) and geotechnical properties (fabric, small-strain stiffness, shear strength) were investigated on the resulting "soil analog". Results indicate that iron-oxide coated sands bear distinct inherent fabric and enhanced small-strain stiffness and critical state parameters when compared to uncoated sands. Contact mechanics analyses suggest that iron oxide coatings yield an increased number of grain-to-grain contacts, higher surface roughness, and interlocking, which are believed to be responsible for the observed properties.
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Le, Roux F. G. "The lithostratigraphy of Cenozoic deposits along the south-east Cape coast as related to sea-level changes." Thesis, Stellenbosch : Stellenbosch University, 1989. http://hdl.handle.net/10019.1/67134.

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Thesis (MSc)--University of Stellenbosch, 1989.
AFRIKAANSE OPSOMMING: Senosoiese sedimente langs die suidooskus van die Kaapprovinsie is periodiek deur verskeie outeurs vir meer as 'n eeu bestudeer. In hierdie aanbieding word die Iiteratuur saamgevat en vele dubbelsinnige stratigrafiese onderverdelings en definisies opgeklaar. Die Senosoiese afsettings kan volgens oorsprong geklassifiseer word as marien, eolies en fluviaal. Die mariene afsettings, synde strand-, nabystrand-, estuarien of lagunale afsettings geassosieerd met transgressiewe/ regressiewe kusIyne, word nou op grond van kenmerkende litologiese, paleontologiese sowel as ouderdomsverskille onderverdeel in die Paleogeen Bathurst, Neogeen Alexandria en Kwaternere Salnova Foraasies. Die Laat-Plioseen tot Vroeg-Pleistoseen Nanaga Formasie, Middel- tot Laat- Pleistoseen Nahoon Formasie en die Holoseen Schel• Hoek Formasie vorm die kus-eoliese afsettings. AI die mariene en marienverwante (eoliese} formasies, gekenmerk deur kalkige klastiese afsettings, is saamgegroepeer in 'n nuutgedefinieerde Algoa Groep. Fluviale afsettings word onderverdeel in die Martindale, Kinkelbos, Bluewater Bay, Kudus Kloof en Sunland Formasies. Die onderskeie afsettings word gekorreleer met verskillende seevlakstande deur geologiese tye. Die vroegste Senosoiese transgressiewe/regressiewe siklus het in die Vroeg-Paleoseen begin en die hoogste aangetekende elevasie vir die era bereik. Die Bathurst Formasie is waarskynlik gedurende hierdie regressie afgeset. 'n Tweed~ kleiner transgressie/ regressiesiklus het plaasgevind gedurende die Laat-Eoseen tot Vroeg-Oligoseen. Sover tans bekend, kan geen afsetting in die dagsoomgebied van die Algoa Groep definitief met hierdie siklus in verband gebring word nie. Die volgende siklus, wat 'n transgressiewe maksimum van c. 250 m bereik het, het begin in die Middel-Mioseen en verstryk in die Vroee Plioseen. Mariene planasie van die kusplatform het gedurende die transgressie plaasgevind terwyl die Alexandria Formasie wat tans bo 120 m geleë is, gedurende die regressie afgeset is. Die Vroeg-Plioseen transgressie het waarskynlik 'n maksimum huidige hoogte van c. 120 m bereik, waartydens o.a. die 120 m branderstoep en "Humansdorpterras" gekerf is. Die Alexandria Formasie tans geleë tussen 60 en 120 m, is afgeset gedurende die Laat-Plioseen regressie. Hierdie regressie het verskeie relatief lang stilstande, wat waarskynlik die 106-m, 90- tot 100-m en 84-m branderstoepe verklaar, ondervind. Selfs die 60-m en 52-m kuslyne kon tydens hierdie regressie gevorm het. Voorlopige paleontologiese getuienis dui egter daarop dat die 60-m kuslyn 'n transgressiewe maksimum van 'n daaropvolgende siklus verteenwoordig, gevolg deur 'n regressie met minstens een beduidende stilstand by 52 m. Die Alexandria Formasie geleë tussen c. 60 en 30 m, is waarskynlik gedurende hierdie regressie gedeponeer, waartydens ook die Bluewater Bay, Kinkelbos en Kudus Kloof Formasies afgeset is. Gedurende die Kwaternêre transgressie/regressiesiklusse, waarvan minstens vier aangedui word, is die Salnova Formasie (afwesig bo 30 m) afgeset. Die Nahoon Formasie, wat ook op groot skaal op die kontinentale bank ontwikkel is, is gedeponeer gedurende die laaste twee Pleistoseen glasiale toe seevlakke tot benede -100 m gedaal het. Die Schelm Hoek Formasie wat tans nog afgeset word, het ontstaan uit die transgressiewe maksimum van die Flandriese transgressie aan die begin van die Holoseen.
ENGLISH ABSTRACT: Cenozoic sediments along the south-east coast of the Cape Province have been studied intermittently for more than a century by various authors. In this presentation the literature is reviewed and many ambiguous stratigraphic subdivisions and definitions are clarified. The Cenozoic deposits can be classified, according to origin, as marine, aeolian and fluvial. The marine deposits, being lagoonal deposits either beach, nearshore, estuarine or associated with transgressive/regressive shorelines, are now subdivided on the grounds of distinct lithological, palaeontological as well as age differences into the Palaeogene Bathurst, Neogene Alexandria and Quaternary Salnova Formations. The Late Pliocene to Early Pleistocene Nanaga Formation, the Hiddle to Late Pleistocene Nahoon Formation and the Holocene Schelm Hoek Formation constitute the coastal and marine-related aeolian deposits. All the marine (aeolian) formations, which are characterised by calcareous clastics, have been grouped together in a newly defined Algoa Group. Fluvial deposits are subdivided into the Martindale, Kinkelbos, Bluewater Bay, Kudus Kloof and Sunland Formations. The various deposits are correlated with different stands of sea-level through geological time. The earliest Cenozoic transgression/regression cycle started in the Early Palaeocene and reached the highest recorded altitude for the era. The Bathurst Formation was probably deposited during this regression. A second lesser transgression/regression cycle occurred in the Late Eocene to Early Oligocene. As far as is presently known, no deposit in the outcrop area of the Algoa Group can be definitely related to this cycle. The next cycle, which reached a transgressive maximum of c. 250 m, started in the Middle Miocene and terminated in the Early Pliocene. Marine planation of the coastal platform took place during the transgression, whilst the Alexandria Formation presently situated above 120 m, was deposited during the regression. The Early Pliocene transgression is considered to have reached a maximum present-day elevation of c. 120 m, during which the 120 m marine bench and "Humansdorp Terrace", amongst others, were carved. The Alexandria Formation presently situated between 60 and 120 m, was deposited during the Late Pliocene regression, which experienced several relatively long stillstands which probably account for the 106 m, 90 t.o 100 m and 8.4 m benches. Even the 60 m- and 52 m-shorelines could have been formed during this regression. Preliminary palaeontological evidence, however, suggests that the 60 m shoreline represents a transgressive maximum of a subsequent cycle followed by a regression with at least one significant stillstand at 52 m. The Alexandria Formation situated between c. 60 and 30 m, was probably deposited during this regression, which also saw the deposition of the Bluewater Bay, Kinkelbos and Kudus Kloof Formations. During the Quaternary transgression/regression cycles, of which at least four are indicated, the Salnova Formation (absent above 30 m) was deposited. The Nahoon Formation, which is also extensively developed on the continental shelf, was deposited during the last two Pleistocene glacials, when sea-levels receded to less than -100 m. The Schelm Hoek Formation, which is still being deposited, originated from the transgressive maximum of the Flandrian transgression at the start of the Holocene.
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Jones, Katie Elizabeth. "Contemporary sediment delivery ratios for small catchments subject to shallow rainfall triggered earthflows in the Waipaoa catchment, North Island, New Zealand : a thesis submitted to the Victoria University of Wellington as partial fulfilment of the requirements for the degree of Master of Science with Honours in Physical Geography /." ResearchArchive@Victoria e-thesis, 2009. http://hdl.handle.net/10063/1197.

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Gómez-Cabrera, Pedro Tomás. "Stratigraphic and structural analysis of the Neogene sediments of the offshore portion of the Salina del Istmo Basin, southeastern Mexico." Thesis, 2003. http://wwwlib.umi.com/cr/utexas/fullcit?p3119621.

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Mee, Aija C. "Origin, formation and environmental significance of sapropels in shallow Holocene coastal lakes of Southeastern Australia." 2007. http://hdl.handle.net/2440/57295.

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Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library.
The aims of this investigation on the Holocene carbonate successions of three shallow, ephemeral lakes from the Cooring coastal plain were: to determine the timing of the sapropel ’events’ in the three lakes; to determine the origin of the sapropelic organic matter and evaluate changes; to establish whether sapropel deposition in these shallow, coastal lakes primarily reflects increased organic matter delivery to the sediments during periods of enhanced terrestrial input and/or aquatic productivity, and; to relate sapropel deposition in these three lakes to both regional and global palaeoenvironment reconstructions. --p. 23-24.
http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1324064
Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2007
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Shiga, Yuki. "Dust and terrestrial salt (NaC1) in SE Australia : implications for Aeolian co-transportation and co-deposition." Master's thesis, 2009. http://hdl.handle.net/1885/148226.

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Dean, C. E. "Lake carbonate geochemistry as a proxy for paleohydrology: a validation-in-time at West Basin Lake, Victoria." Thesis, 2019. https://hdl.handle.net/2440/136950.

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There is a lack of extensive historical climate data in Australia, meaning high-resolution paleoclimate studies are essential for a more comprehensive understanding of natural climate variability. The majority of paleohydrology records in south-eastern Australia region are low resolution, millennial time-scale reconstructions, resulting in a lack of understanding of climate variability at shorter time-scales relevant to human life spans. Here, we attempt to validate the use of geochemical analysis of lake sediments from West Basin, Victoria, as a way to create a high resolution paleohydrology reconstruction. The isotopic composition of the lake water in West Basin is primarily controlled by the precipitation to evaporation ratio (P:E). Ostracod calcite and bulk inorganic carbonates (BIC) that form within the water column reflect these changes and thus are used as proxies of past changes in P:E. This reconstruction is supported by a 210Pb- and 240/230Pu-based chronology which estimates a sediment accumulation rate of 0.3 to 0.4 cm/year and a maximum age at 40 cm of 118 years. This enables the resulting oxygen and carbon profiles to be validated against instrumental records of annual rainfall and temperature. The oxygen profile exhibits good agreement with this climate record, with peaks in δ18O values often coinciding with periods of low annual rainfall. Based on this, the ostracod record was determined to be capable of recording reliable, high resolution changes in P:E. The BIC record, though less consistent, can produce a detailed profile where ostracods are unavailable. Studies of this kind are vital to improving the accuracy of proxy system models which allow for reconstructions to be extended further in the geological record. Such models would allow for contextual understanding of the severity of drought occurrences and the assessment of the possible impacts of human induced climate change.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2019
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Books on the topic "Sediments (Geology) Victoria, Southeastern"

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Colman, Steven M. Physical, soil, and paleomagnetic stratigraphy of the Upper Cenozoic sediments in Fisher Valley, southeastern Utah. [Washington D.C.]: U.S. G.P.O., 1988.

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Dyman, T. S. Conglomerate facies and contact relationships of the upper Cretaceous upper part of the Frontier Formation and lower part of the Beaverhead group, Lima Peaks area, southwestern Montana and southeastern Idaho. Washington: U.S. G.P.O., 1995.

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Kettles, I. M. Composition of glacial sediments in Canadian Shield terrane, southeastern Ontario and southwestern Quebec: Applications to acid rain research and mineral exploration. Ottawa: Geological Survey of Canada, 1994.

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Clark, David W. Geochemical processes in ground water resulting from surface mining of coal at the Big Sky and West Decker Mine Areas, southeastern Montana. Helena, Mont: U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Canada. Energy, Mines and Resources. Geological Survey ofCanada. Composition of glacial sediments in Canadian Shield terrane, southeastern Ontario and southwestern Quebec: Applications to acid rain research and mineral exploration. Ottawa: Energy, Mines and Resources., 1994.

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Butler, David L. Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the Dolores Project Area, Southwestern Colorado and Southeastern Utah, 1990-91. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Azza, N. G. T. The Dynamics of Shoreline Wetlands and Sediments of Northern Lake Victoria. Taylor & Francis Ltd, 2006.

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Steven, Simpson, Church S. E, and Geological Survey (U.S.), eds. Analytical results and sample locality maps of stream-sediment and rock samples from the Cobblestone Creek area, southeastern Chandler Lake quadrangle, Alaska. [Denver, Colo.]: U.S. Geological Survey, 1989.

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Steven, Simpson, Church S. E, and Geological Survey (U.S.), eds. Analytical results and sample locality maps of stream-sediment and rock samples from the Cobblestone Creek area, southeastern Chandler Lake quadrangle, Alaska. [Denver, Colo.]: U.S. Geological Survey, 1989.

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N, Haggar Thomas, and University of South Dakota. Science Center., eds. Grain-size analysis of post-cretaceous sand and gravel units in southeastern South Dakota. Vermillion, S.D: Science Center, University of South Dakota, 2002.

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Conference papers on the topic "Sediments (Geology) Victoria, Southeastern"

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Self-Trail, Jean, Mercer Parker, David L. Govoni, and Laurel M. Bybell. "RE-EXAMINATION OF UPPER CRETACEOUS AND PALEOGENE FOSSILS AND SEDIMENTS AT THE CABIN BRANCH OUTCROP LOCALITY, MARYLAND: IMPLICATIONS FOR REGIONAL GEOLOGY." In Joint 56th Annual North-Central/ 71st Annual Southeastern Section Meeting - 2022. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022nc-373477.

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Reports on the topic "Sediments (Geology) Victoria, Southeastern"

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Harrison, J. C., R. L. Christie, R. H. Rainbird, and A. Ford. Geology, tectonic assemblage map of the Cambridge Bay area, southeastern Victoria Island, Nunavut. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2013. http://dx.doi.org/10.4095/292813.

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Caritat, P. de, and U. Troitzsch. Towards a regolith mineralogy map of the Australian continent: a feasibility study in the Darling-Curnamona-Delamerian region. Geoscience Australia, 2021. http://dx.doi.org/10.11636/record.2021.035.

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Abstract:
Bulk quantitative mineralogy of regolith is a useful indicator of lithological precursor (protolith), degree of weathering, and soil properties affecting various potential landuse decisions. To date, no national-scale maps of regolith mineralogy are available in Australia. Catchment outlet sediments collected over 80% of the continent as part of the National Geochemical Survey of Australia (NGSA) afford a unique opportunity to rapidly and cost-effectively determine regolith mineralogy using the archived sample material. This report releases mineralogical data and metadata obtained as part of a feasibility study in a selected pilot area for such a national regolith mineralogy database and atlas. The area chosen for this study is within the Darling-Curnamona-Delamerian (DCD) region of southeastern Australia. The DCD region was selected as a ‘deep-dive’ data acquisition and analysis by the Exploration for the Future (2020-2024) federal government initiative managed at Geoscience Australia. One hundred NGSA sites from the DCD region were prepared for X-Ray Diffraction (XRD) analysis, which consisted of qualitative mineral identification of the bulk samples (i.e., ‘major’ minerals), qualitative clay mineral identification of the <2 µm grain-size fraction, and quantitative analysis of both ‘major’ and clay minerals of the bulk sample. The identified mineral phases were quartz, plagioclase, K-feldspar, calcite, dolomite, gypsum, halite, hematite, goethite, rutile, zeolite, amphibole, talc, kaolinite, illite (including muscovite and biotite), palygorskite (including interstratified illite-smectite and vermiculite), smectite (including interstratified illite-smectite), vermiculite, and chlorite. Poorly diffracting material (PDM) was also quantified and reported as ‘amorphous’. Mineral identification relied on the EVA® software, whilst quantification was performed using Siroquant®. Resulting mineral abundances are reported with a Chi-squared goodness-of-fit between the actual diffractogram and a modelled diffractogram for each sample, as well as an estimated standard error (esd) measurement of uncertainty for each mineral phase quantified. Sensitivity down to 0.1 wt% (weight percent) was achieved, with any mineral detection below that threshold reported as ‘trace’. Although detailed interpretation of the mineralogical data is outside the remit of the present data release, preliminary observations of mineral abundance patterns suggest a strong link to geology, including proximity to fresh bedrock, weathering during sediment transport, and robust relationships between mineralogy and geochemistry. The mineralogical data generated by this study are presented in Appendix A of this report and are downloadable as a .csv file. Mineral abundance or presence/absence maps are shown in Appendices B and C to document regional mineralogical patterns.
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