Relevant bibliographies by topics / Stratigraphic Silurian

Academic literature on the topic 'Stratigraphic Silurian'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Stratigraphic Silurian"

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Sennikov, N. V., O. T. Obut, N. G. Izokh, R. A. Khabibulina, and T. P. Kipriyanova. "THE REGIONAL STRATIGRAPHIC CHART FOR THE SILURIAN OF THE WESTERN SAYAN (NEW VERSION)." Geology and mineral resources of Siberia, no. 9c (2021): 15–36. http://dx.doi.org/10.20403/2078-0575-2021-9c-15-36.

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A new version of the Regional stratigraphic chart for the Silurian of the Western Sayan and explanatory note, compiled in accordance with the Russian Stratigraphic Code, introduce changes, additional and specified data in comparison with the previous (first edition) chart. The Interdepartmental stratigraphic meeting held at Novosibirsk in 1964 approved the old version of the chart and later it was validated by the USSR Interdepartmental Stratigraphic Committee as the official stratigraphic base for all types of the regional geologic activities. Since 1964 meeting, the stages of the Silurian chart were changed. Thus, former stages Llandovery, Wenlock, Ludlow and Pridoli become series. New stages Rhuddanian, Aeronian, Telychian, Sheinwoodian, Homerian, Gorstian and Ludfordian were adopted for the three former series. For the presented stratigraphic chart the new standard Silurian stages were used.
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Zhang, Shunxin, Khusro Mirza, and Christopher R. Barnes. "Upper Ordovician – Upper Silurian conodont biostratigraphy, Devon Island and southern Ellesmere Island, Canadian Arctic Islands, with implications for regional stratigraphy, eustasy, and thermal maturation." Canadian Journal of Earth Sciences 53, no. 9 (September 2016): 931–49. http://dx.doi.org/10.1139/cjes-2016-0002.

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The conodont biostratigraphy for the Upper Ordovician – Upper Silurian carbonate shelf (Irene Bay and Allen Bay formations) and interfingering basinal (Cape Phillips Formation) facies is established for parts of Devon and Ellesmere islands, central Canadian Arctic Islands. Revisions to the interpreted regional stratigraphic relationships and correlations are based on the stratigraphic distribution of the 51 conodont species representing 32 genera, identified from over 5000 well-preserved conodonts recovered from 101 productive samples in nine stratigraphic sections. The six zones recognized are, in ascending order, Amorphognathus ordovicicus Local-Range Zone, Aspelundia fluegeli Interval Zone, Pterospathodus celloni Local-Range Zone, Pt. pennatus procerus Local-Range Zone, Kockelella patula Local-Range Zone, and K. variabilis variabilis – Ozarkodina confluens Concurrent-Range Zone. These provided a more precise dating of the members and formations and, in particular, the range of hiatuses within this stratigraphic succession. The pattern of regional stratigraphy, facies changes, and hiatuses is interpreted as primarily related to the effects of glacioeustasy associated with the terminal Ordovician glaciation and smaller Early Silurian glacial phases, the backstepping of the Silurian shelf margin, and the geodynamic effects of the collision with Laurentia by Baltica to the east and Pearya to the north. Conodont colour alteration index values (CAI 1–6.5) from the nine sections complement earlier graptolite reflectance data in providing regional thermal maturation data of value in hydrocarbon exploration assessments.
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Sennikov, N. V., N. V. Novozhilova, O. T. Obut, and R. A. Khabibulina. "The Pridoli (Silurian) Lithostratigraphy and Biostratigraphy of Gorny Altai." Russian Geology and Geophysics 62, no. 11 (November 1, 2021): 1269–84. http://dx.doi.org/10.2113/rgg20204232.

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Abstract —The paper presents new data on the upper Silurian litho- and biostratigraphy of the Gorny Altai area. Sediments within this interval store a succession of taxonomically representative middle–upper Ludfordian, lower Pridoli, and Lower Devonian (Lochkovian–Pragian) conodont assemblages. The new fauna constraints made a basis for updated correlations of the local and regional stratigraphic units at the Silurian/Devonian boundary of Gorny Altai with the stages of the International Stratigraphic Chart. The correlation results reveal a mismatch between the boundaries of the local and regional Silurian units and the respective boundaries of stages in the International Stratigraphic Chart.
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Zhang, Lei, Lun Wei Zhu, and Xue Juan Zhang. "High Resolution Sequence Stratigraphy of Silurian Strata in Tazhong Area." Advanced Materials Research 734-737 (August 2013): 111–16. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.111.

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According to the fundamental principles of high resolution sequence stratigraphy, this paper focused on the application of high resolution sequence stratigraphy to Silurian strata in Tazhong area. Based on the comprehensive study of logging, drilling and seismic information, the high resolution sequence boundaries of Silurian strata and two scales of datum level cycles (long-term and intermediate-term) can be recognized in Tazhong area. Seven chronstratigraphic boundaries can be recognized in Silurian strata, including four sequence boundaries, which were the transformation from datum level falling to datum level rising, and three flooding surfaces, which the transformation from datum level rising to datum level falling. The Silurian strata in Tazhong area can be divided into three third-order sequences which correspond to three long-term datum level cycles, and 11 fourth-order sequences (parasequence sets) relating to 11 intermediate-term datum level cycles. The classification aforementioned can much better solved the corresponding problem between the six lithological sections of Silurian strata and sequence formations, finally establishes the high resolution sequence stratigraphic framework of Silurian strata in Tazhong area.
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Vacek, František, Jindřich Hladil, and Petr Schnabl. "Stratigraphic correlation potential of magnetic susceptibility and gamma-ray spectrometric variations in calciturbiditic facies (Silurian-Devonian boundary, Prague Synclinorium, Czech Republic)." Geologica Carpathica 61, no. 4 (August 1, 2010): 257–72. http://dx.doi.org/10.2478/v10096-010-0015-2.

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Stratigraphic correlation potential of magnetic susceptibility and gamma-ray spectrometric variations in calciturbiditic facies (Silurian-Devonian boundary, Prague Synclinorium, Czech Republic)Magnetic susceptibility (MS) and gamma-ray spectrometry (GRS) stratigraphy were used for correlation and characterization of eight Silurian-Devonian (S-D) sections in the Prague Synclinorium (Czech Republic). They represent two different facies developments: lower subtidal to upper slope deposits and slope-to-basin-floor distal calciturbidites. Sections from relatively shallow- and deep-water sections are easy to compare and correlate separately, although the detailed relationship between these two facies is still not entirely clear and correlations between the two settings are difficult. This may be due to sharp facies transitions and presence of stratigraphic gaps. The MS and GRS stratigraphic variations combined with sedimentologic data have been also used for reconstruction of the evolution of the sedimentary environment. The beds close above the S-D boundary show noticeably enhanced MS magnitudes but weak natural gamma-ray emissions. It may correspond to an increased amount of terrigenous magnetic material occurring with short-term shallowing (sedimentological evidence). In deep-water sections the uppermost Silurian is characterized by high MS and GRS values. It corresponds to a supply of recycled sediment to the lower wedge which occurred during the late Pridoli regression phase. The basal Devonian beds correspond to gradual deepening, but the overlying sequences reflect other shallowing episodes which are expressed in increasing MS and gamma ray activity of rocks. The MS and GRS fluctuations are interpreted as a result of local subsidence of the sea bottom along synsedimentary growth-faults and/or a biotic event rather than of eustatic sea-level changes.
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Craigie, Neil W. "Definition of the Hercynian Unconformity in eastern Saudi Arabia using chemostratigraphy in conjunction with biostratigraphy, sedimentology and lithostratigraphy." Petroleum Geoscience 26, no. 4 (December 19, 2019): 568–88. http://dx.doi.org/10.1144/petgeo2019-116.

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The following chemostratigraphy study was conducted on Paleozoic sediments encountered in 14 wells in eastern Saudi Arabia. A total of 1500 samples were analysed by inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS), with data acquired for 48 elements, ranging from Na to U in the periodic table. The aim was to utilize chemostratigraphy, in conjunction with existing biostratigraphic, lithostratigraphic and sedimentological data, to define the Hercynian Unconformity in each well and to recognize stratigraphic boundaries occurring above and below it. This was necessary as the unconformity eroded to different stratigraphic levels in each well, with Devonian, Silurian and Ordovician sediments found immediately below it in adjacent locations. In the absence of chemostratigraphic, biostratigraphic and sedimentological data, it is often very difficult to define this boundary and others using lithostratigraphy alone as many stratigraphic intervals yield similar gamma-ray (GR) log trends. For example, a low ‘blocky’ GR response is typical of both the Carboniferous Ghazal Member and the Ordovician Sarah Formation. Similarly, both the Silurian Sharawra Member and the Silurian–Devonian Tawil Formation produce a ‘ratty’ GR trend. Each stratigraphic member and formation was found to have distinctive chemostratigraphic, biostratigraphic, sedimentological and/or wireline log signatures.
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Eriksson, Mats. "Silurian Ramphoprionid polychaetes from Gotland, Sweden." Journal of Paleontology 75, no. 5 (September 2001): 993–1015. http://dx.doi.org/10.1017/s0022336000039901.

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Silurian ramphoprionid polychaete annelids, represented by their jaws (scolecodonts), are described from extensive collections from Gotland, Sweden. The family Ramphoprionidae, monotypic at its original description, is sub-divided into four genera; Protarabellites Stauffer, 1933; Ramphoprion Kielan-Jaworowska, 1962; “Pararamphoprion” Männil and Zaslavskaya, 1985; and Megaramphoprion new genus. Identified species include “P.” cf. nordicus Männil and Zaslavskaya, 1985; P. rectangularis new species; P. staufferi new species; P. triangularis new species; and two Protarabellites species left in open nomenclature. Ramphoprion is represented by one new highly plastic species, R. gotlandensis, housing five distinguishable morphotypes showing gradual evolution. Megaramphoprion, which is most closely related to Ramphoprion, is represented by M. magnus new genus and species, a rare but distinctive taxon. Most species have long stratigraphic ranges within which important morphological changes can nonetheless be observed. The stratigraphic range of ramphoprionids includes, at least, the Ordovician to the Silurian. They are fairly rare in the Silurian of Gotland and where present they generally form less than 10 percent of the polychaete faunas, although occasionally reaching as much as 20 to 30 percent. Evolution, paleoecology, and surface structures of the investigated species are briefly discussed.
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Toyos, J. M., and C. Aramburu. "El Ordovícico en el área de Los Barrios de Luna, Cordillera Cantábrica (NW de España)." Trabajos de Geología 34, no. 34 (March 9, 2015): 61. http://dx.doi.org/10.17811/tdg.34.2014.61-96.

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Resumen: El estudio cartográfico y estratigráfico del Ordovícico en el área de Los Barrios de Luna (flanco sur del Sinclinal de Abelgas-Alba), ha permitido reconocer una compleja estratigrafía, con­dicionada por una tectónica sinsedimentaria, probablemente relacionada con el intenso vulcanismo que se observa algo más al este. Se revisa la estratigrafía de la Fm. Barrios, de edad Cámbrico Medio a Tardío en su mayor parte. Se redenomina una unidad estratigráfica informal (capas de El Vento­rrillo), del Ordovícico Temprano?, Medio y Tardío. Se definen formalmente dos formaciones en el Ordovícico Superior-Silúrico basal? (Caliza de La Devesa y Cuarcita de La Serrona), y se precisa la estratigrafía de la unidad informal silúrica capas de Getino. Las costras ferruginosas situadas en la base de las capas de El Ventorrillo y de las capas de Getino se interpretan como originadas por alteración de materiales volcánicos.Palabras clave: Ordovícico, cartografía, estratigrafía, costras ferruginosas, tectónica sinsedimenta­ria, rifting, Cordillera Cantábrica, Macizo Ibérico.Abstract: The mapping and stratigraphic study of the Ordovician rocks in Los Barrios de Luna area (southern limb of Abelgas-Alba Syncline), allowed us to recognize a complex stratigraphy, conditio­ned by a synsedimentary tectonics, probably related to the intense volcanism observed further east. The stratigraphy of the Barrios Fm., mostly Middle to Late Cambrian age, is reviewed. An informal stratigraphic unit (El Ventorrillo beds), of Early?, Middle to Late Ordovician age, is renamed. Two Upper Ordovician-basal Silurian? formations are formally defined (La Devesa Limestone and La Serrona Quartzite), and the stratigraphy of the Silurian informal unit Getino beds is refined. The ferruginous crusts at the base of El Ventorrillo beds and Getino beds are interpreted as a result of alteration of volcanic materials.Key words: Ordovician, cartography, stratigraphy, ferruginous crusts, synsedimentary tectonics, rifting, Cantabrian Mountains, Iberian Massif.
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Zuykov, Michael, David A. T. Harper, and Emilien Pelletier. "Revision of the Ordovician brachiopod genus Noetlingia Hall and Clarke, 1893." Journal of Paleontology 85, no. 3 (May 2011): 595–98. http://dx.doi.org/10.1666/10-060.1.

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The enigmatic pentameride brachiopod Noetlingia Hall and Clarke, 1893 is revised and its stratigraphic range corrected. The type species Noetlingia tscheffkini occurs only within the upper Darriwilian (Ordovician) of the East Baltic and not in the Silurian as previously assumed. Thus, presently defined, the superfamily Porambonitoidea does not cross the boundary between the Ordovician and Silurian systems. Two other species occurring in the Lower to Middle Ordovician of South China and North America are assigned to Noetlingia.
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Donovan, Stephen K., and David G. Keighley. "Fossil crinoids from the basal West Point Formation (Silurian), southeast Gaspé Peninsula, Québec, eastern Canada." Atlantic Geology 52 (November 10, 2016): 211. http://dx.doi.org/10.4138/atlgeol.2016.010.

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Silurian strata of Atlantic Canada and southern Québec locally preserve common fossil crinoids, albeit mostly as disarticulated remains. New crinoids from the Chaleurs Group, West Point Formation (Ludlow to Pridoli?; Upper Silurian) of the Gaspé Peninsula include Iocrinus? maennili (Yeltysheva) (otherwise known from the Katian of Estonia), Bystrowicrinus (col.) depressus sp. nov. and Cyclocyclicus (col.) sp. aἀ. C. (col.) echinus Donovan. On the basis of both its gross morphology and stratigraphic position, Iocrinus? maennili is unlikely to be an iocrinid disparid, a family that became extinct at the end of the Ordovician. The trivial name has hitherto been erroneously spelled as männili, mannili and mjannili. Most specimens of the common Bystrowicrinus (col.) depressus appear cyclocyclic because the pentastellate lumen occurs in a deeply sunken claustrum that is commonly occluded by sediment; clean specimens are highly distinctive. Cyclocyclicus (col.) sp. aἀ. C. (col.) echinus is similar to a species known from the Katian of North Wales. Taken together, this assemblage is more reminiscent of Katian strata (Upper Ordovician). Ḁis is problematic given the current mapping of the outcrop as West Point Formation (Upper Silurian), suggesting further stratigraphic studies in the area are required.
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Dissertations / Theses on the topic "Stratigraphic Silurian"

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Kanō, Akihiro. "Deposition, palaeoecology, and diagenesis of the Silurian reef-like limestones on Gotland." Stockholm : Dept. of Geology and Geochemistry, University of Stockholm, 1990. http://catalog.hathitrust.org/api/volumes/oclc/23697432.html.

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Cramer, Bradley Douglas. "Application of integrated high-resolution biochemostratigraphy to Paleozoic chronostratigraphic correlation recalibrating the Silurian system /." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1245178129.

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Hogan, John Patrick. "Mineralogical, chemical and isotopic diversity in plutonic rock suites from the Coastal Maine Magmatic Province:the role of source region heterogeneity, tectonic setting and magmatic processes." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39074.

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This dissertation represents an investigation of the mid-Paleozoic tectono-thermal and kinematic evolution of the crust in eastern coastal Maine as recorded by the plutonic rocks of this region. The first chapter describes the plutonic rocks of the Coastal Maine Magmatic Province. A tectonic model is developed in which late Ordovician-Silurian bimodal magmatism is interpreted to reflect crustal melting as a result of intraplating of mantle melts at high crustal levels during a period of tension. Large scale melting of lower crustal source regions, represented by voluminous intrusion of Devonian granites, reflects a period of transpression during which upwelling mantle melts were confined to the base of the crust. The diversity of granitic plutons reflects changes in the mineral assemblages present during partial melting, and in some instances, modification as a result of mixing/mingling with mantle melts. The second chapter examines the effect of accessory minerals on the initial Pb isotopic signature of anatectic granites. Their initial Pb isotopic composition reflects (a) the age, type, modal distribution, and heterogeneity in the initial U and Th content of the accessory phase(s) present in the source, (b) variation in melt composition and temperature during partial melting, (c) the fraction of the source melted, and (d) the extent to which the melt is homogenized prior to crystallization. It is shown that granitic plutons derived by crustal anatexis of a common source material are not required to have similar initial lead isotopic compositions. The third chapter presents the results of a Pb isotopic investigation of selected plutonic rocks from the Coastal Maine MagmaticProvince. This study was designed to test and refine petrogenetic models presented in Chapter 1. The Pb isotopic signature of the granitic plutons reveals the presence of two lithologically heterogeneous source regions beneath the Avalon Composite Terrane. The upper crustal source region has an mean V-Pb age of -2.0 Ga and the high 207Pb/204Pb-206Pb/204Pb characteristic of Avalonian crust. The lower crustal source region has an average U-Pb age of -1.3 Ga and lower 207Pb/204Pb. This source region may represent either the autochthonous basement to the Avalon platform or the eastern extension of the basement to the Gander Terrane of central Maine.
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Chow, Andre M. C. (Andre Mu-Chin). "Sedimentology and paleontology of the Attawapiskat Formation (Silurian) in the type area, northern Ontario." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65494.

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Smith, Jason J. "A reinterpretation of the sedimentology and stratigraphy of the upper Silurian-lower Devonian Manlius Formation in upstate New York." Diss., Online access via UMI:, 2009.

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Vrazo, Matthew B. M. S. "Stratigraphic and Paleoecological Controls on Eurypterid Lagerstatten in the Mid-Paleozoic." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1468336974.

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Hughson, Robert Carl. "Upper silurian carbonates of Lake Memphremagog and lime ridge areas, Quebec." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63996.

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Clayer, François. "Sediment Dynamics and Stratigraphic Architecture of a Lower Silurian Storm-dominated Carbonate Ramp, Anticosti Island, Québec, Canada." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23149.

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The upper Llandovery succession across the Jupiter-Chicotte formational contact on Anticosti Island, Québec, allows us to study the sediment dynamics and stratigraphic architecture of a storm-dominated, carbonate ramp. The Anticosti paleotropical ramp was slowly subsiding and recording significant changes in sea level in a far field glacial setting during the early Telychian. Three facies associations, grouping nine facies, are recognized along the E-W outcrop belt, and from top to bottom as the: (FA-1) encrinitic carbonate facies, (FA-2) mixed siliciclastic and carbonate facies, and (FA-3) non-encrinitic carbonate facies. These mid to outer ramp sediments represent deposition mostly from episodic, high-energy storm events as evidenced by hummocky cross-stratification, large wave ripples, gutter casts, and wave-enhanced sediment-gravity flow deposits. Spatial and temporal changes in siliciclastic content imply basin margin depositional environments in the eastern sections and change in climate regime from arid to humid conditions. The Chicotte deposition marks a major faunal change with the domination of crinoids triggered by increasing siliciclastic supply, rapid sea level fluctuations and change in substrates. The recognition of one major transgressive-regressive (TR) sequence subdivided in distinct meter-scale cycles allows a high resolution E-W correlation. The development of the TR sequence and meter-scale cycles is driven by glacio-eustacy where the main sequence is 4th order (~400 Ky) with superimposed meter-scale cycles that are 5th and/or 6th order (~100 Ky). Nevertheless, erosional capping surfaces within the more proximal tempestites represent ancient rocky shorelines that developed during forced sea level falls. In order to explain this stratigraphic architecture, a carbonate open-ramp model is proposed with a concave-up profile and a narrow and steep inner ramp in equilibrium with a high-energy coastline.
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Santos, Werlem Holanda dos. "Análise estratigráfica do intervalo siluro-devoniano da bacia do Amazonas." Universidade do Estado do Rio de Janeiro, 2014. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7129.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
O trabalho consiste na análise estratigráfica do intervalo siluro-devoniano da Bacia do Amazonas utilizando como base os conceitos da Estratigrafia Moderna, mais especificamente a sequência estratigráfica genética, proposta por Galloway (1989), a qual utiliza as superfícies de inundação marinha como os limites de uma sequência sedimentar. A principal razão para a utilização desta metodologia deve-se ao fato que o conteúdo rochoso compreendido no intervalo estudado teve a sua sedimentação relacionada às transgressões marinhas que faziam parte do contexto paleogeográfico da bacia durante o Siluriano e Devoniano. Desta forma, as superfícies de inundação máxima, representativas de eventos cronoestratigráficos, destacam-se nos perfis de raios gama e são tomadas como datum de correlação em treze poços exploratórios, os quais foram distribuídos em quatro seções (A-A, B-B, C-C e D-D) pela bacia. A análise destas seções permitiu a identificação de quatro sequências de terceira ordem (AB, BC, CD e DE), limitadas no topo e na base por superfícies de inundação marinha. Cada sequência é constituída por ciclos regressivo-transgressivos assimétricos, representados pelo trato de sistemas de mar alto e pelo trato de sistemas transgressivo. A análise destas seções integrada à interpretação de mapas estratigráficos (isópacas, isólitas e porcentagem de areias) possibilitou identificar o depocentro da bacia, bem como duas áreas principais como fonte de sedimentos arenosos (uma a oeste e outra a sul). Além disto, foi possível inferir que a comunicação marinha com o continente, durante as transgressões paleozoicas, responsável pela deposição de sedimentos pelíticos, seguiu uma orientação de norte para sul, evoluindo obliquamente em direção ao continente num trend nordeste para sudoeste. Por fim, a partir da análise cíclica em perfis de raios gama, as superfícies de inundação marinha, do intervalo Devoniano, das bacias do Amazonas e Parnaíba foram correlacionadas.
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Schmidt, David A. "Paleontology and sedimentology of calcifying microbes in the Silurian of the Ohio-Indiana region an expanded role of carbonate-forming microbial communities /." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1142964356.

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Books on the topic "Stratigraphic Silurian"

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Chinnici, Paul. The Silurian experience. Rochester, NY: Primitive Worlds, 2009.

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Chinnici, Paul. The Silurian experience. Rochester, NY: Primitive Worlds, 2009.

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Controversy in Victorian geology: The Cambrian-Silurian dispute. Princeton, N.J: Princeton University Press, 1986.

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Hocking, R. M. The Silurian Tumblagooda Sandstone, Western Australia. Perth, W.A: Geological Survey of Western Australia, 1991.

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Norford, B. S. Correlation chart and biostratigraphy of the Silurian rocks of Canada. Trondheim, Norway: International Union of Geological Sciences, 1997.

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Secord, James A. Controversy in Victorian geology: The Cambria-Silurian dispute. Oxford: Princeton University Press, 1990.

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G, Bassett Michael, and National Museum of Wales, eds. Silurian field excursions: Prague Basin (Barrandian), Bohemia. Cardiff: National Museum of Wales, 1992.

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Marcou, Jules. The Taconic and Lower Silurian rocks of Vermont and Canada. [Boston?: s.n.], 1985.

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Marcou, Jules. The Taconic and Lower Silurian rocks of Vermont and Canada. [Boston?: s.n.], 1985.

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Ault, Curtis H. Exposures of Silurian reefs in Indiana. Bloomington, Ind. (611 N. Walnut Grove, Bloomington 47405): State of Indiana, Dept. of Natural Resources, Geological Survey, 1992.

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Book chapters on the topic "Stratigraphic Silurian"

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Kaljo, Dimitri, Arthur J. Boucot, Richard M. Corfield, Alain Le Herisse, Tatyana N. Koren, Jiri Kriz, Peep Männik, et al. "Silurian Bio-Events." In Global Events and Event Stratigraphy in the Phanerozoic, 173–224. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-79634-0_10.

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Hussey, Arthur M. "Days 6 and 7: Metamorphic stratigraphy and structure of the Pre-silurian sequenchs of the Casco Bay area, southwestern Maine." In Northern Appalachian Transect: Southeastern Quebec, Canada Through Western Maine, U.S.A.; Quebec City, Canada to Portland, Maine, July 20–26, 1989, 48–52. Washington, D. C.: American Geophysical Union, 1989. http://dx.doi.org/10.1029/ft358p0048.

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Hassan Kermandji, Adnan M. "Late Silurian-Middle Devonian Miospores." In Stratigraphic Analysis of Layered Deposits. InTech, 2012. http://dx.doi.org/10.5772/35200.

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GOODMAN, WILLIAM M., and CARLTON E. BRETT. "ROLES OF EUSTASY AND TECTONICS IN DEVELOPMENT OF SILURIAN STRATIGRAPHIC ARCHITECTURE OF THE APPALACHIAN FORELAND BASIN." In Tectonic And Eustatic Controls on Sedimentary Cycles, 147–69. SEPM (Society for Sedimentary Geology), 1994. http://dx.doi.org/10.2110/csp.94.04.0147.

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Ross, Charles A., and June R. P. Ross. "Silurian sea-level fluctuations." In Paleozoic sequence stratigraphy; views from the North American Craton. Geological Society of America, 1996. http://dx.doi.org/10.1130/0-8137-2306-x.187.

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Jianqiang, Chen, and He Xinyi. "Lower Silurian (Llandovery) Rugose Coral Assemblage Zones and their Relation with the Depositional Sequence of Upper Yangtze Region, China*." In Stratigraphy, 85–90. CRC Press, 2020. http://dx.doi.org/10.1201/9781003079590-11.

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Soja, Constance M. "Silurian-bearing terranes of Alaska." In The Terrane Puzzle: New Perspectives on Paleontology and Stratigraphy from the North American Cordillera. Geological Society of America, 2008. http://dx.doi.org/10.1130/2008.442(02).

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Beltrán-Triviño*, Alejandro, Uwe C. Martens, and Albrecht von Quadt. "Siliciclastic provenance of the Cenozoic stratigraphic succession in the southern Gulf of Mexico: Insights from U-Pb detrital zircon geochronology and heavy minerals analysis." In Southern and Central Mexico: Basement Framework, Tectonic Evolution, and Provenance of Mesozoic–Cenozoic Basins, 217–50. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.2546(09).

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ABSTRACT This work presents new geochronological and mineralogical data to investigate the provenance of sediments accumulated in deep-water environments in the southern and southwestern regions of the Gulf of Mexico during the Cenozoic. We integrated U-Pb geochronology with heavy and light minerals data to better understand the provenance of the Paleocene–Miocene strata and the evolution of the sediment source terranes. The analyzed samples came from drill cuttings of sandy levels in five exploration wells offshore in the Gulf of Mexico: Puskon-1, Aktum-1, Kunah-1, Kabilil-1, and Chuktah-201. The material contained abundant barite, a component of the drilling mud. Consequently, a semiquantitative approach to discriminate mineral phases and to quantify concentrations was used. Overall, we recognized 10 zircon populations that range from Proterozoic to Cenozoic ages. Proterozoic ages show a prominent peak at ca. 1.0 Ga and a minor peak at ca. 1.8 Ga. The Neoproterozoic to Cambrian population displays a broad distribution with a peak at ca. 600 Ma. Ordovician–Silurian zircons exhibit minor peaks at ca. 460 and 445 Ma. Devonian and Carboniferous zircons are very scarce in our data set. Permian–Triassic zircons are abundant, and they show a prominent peak at ca. 255 Ma and a minor one at ca. 228 Ma. Jurassic zircons are not common and display several minor peaks at ca. 185, 170, and 155 Ma. The Early Cretaceous population displays a noticeable peak at ca. 120 Ma. Late Cretaceous–Paleocene zircons exhibit several peaks at ca. 92, 82, 72, and 65 Ma. Cenozoic zircons also display several prominent peaks at ca. 40, 35, 25, and 18 Ma. Zircons of Proterozoic to Early Cretaceous ages are interpreted to be derived from the Mesozoic sedimentary cover of basement blocks in southern and eastern Mexico terranes due to their rounded to subrounded morphology. Late Cretaceous and Cenozoic zircons are the most abundant populations in the analyzed samples. These zircon populations exhibit euhedral and subhedral morphology indicating derivation from primary sources in the magmatic arcs. This has important implications in assessing the reservoir quality, since the sediments were directly delivered from the magmatic arc into the deep-water environments. Our results allow us to conclude that the sedimentary provenance of the southwestern and southern strata in the Gulf of Mexico was not associated with Laurentian terranes, as has been proposed for Late Cretaceous–Paleogene strata of northern Mexico and the northern Gulf of Mexico, such as the world-class Wilcox-type hydrocarbon reservoirs. We propose that the provenance of the analyzed strata was related to the tectono-magmatic evolution of the southern Mexico terranes during the Cenozoic; therefore, large NW-SE dispersal systems that eroded Laurentian terranes in the southern United States did not deliver sediments into the southern sectors of the Gulf of Mexico, probably constrained by the Tamaulipas Arch and the Gulf Stream.
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"Silurian-Jurassic Stratigraphy and Basin Evolution of Northwestern Argentina." In Petroleum Basins of South America. American Association of Petroleum Geologists, 1995. http://dx.doi.org/10.1306/m62593c11.

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Martens, Uwe C., and Roberto S. Molina Garza. "Mexico: Basement framework and pre-Cretaceous stratigraphy." In Southern and Central Mexico: Basement Framework, Tectonic Evolution, and Provenance of Mesozoic–Cenozoic Basins, 1–27. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.2546(01).

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ABSTRACT Provenance determinations of sediment deposited in circum–Gulf of Mexico basins rely on understanding the geologic elements present in the basement provinces located from northeast Mexico to Honduras. Relevant geologic features of these provinces are herein summarized in text and pictorial form, and they include the Huizachal-Peregrina uplift, western Gulf of Mexico, Huayacocotla, Zapoteco, Mixteca, Xolapa, Juchatengo, Cuicateco, Mixtequita, south-central Chiapas, southeast Chiapas, western Guatemala, central Guatemala, Maya Mountains, and the Chortis block. We recognized basement elements of local character that serve as fingerprints for specific source areas. However, many elements are ubiquitous, such as 1.4–0.9 Ga, high-grade metamorphic rocks that occur both as broad exposures and as inliers in otherwise reworked crust. Xenocrystic and detrital zircon of Mesoproterozoic age is very common and hence not diagnostic of provenance. Neoproterozoic rocks are very scarce in Mexican basement provinces. However, Ediacaran–Cambrian detrital zircon grains are found in Mexican Paleozoic strata; these were possibly derived from distant sources in Gondwana and Pangea. Ordovician–Silurian magmatism is present in approximately half the provinces; magmatic detrital zircon of such age is somewhat informative in terms of provenance. More useful populations are detrital zircon grains with Ordovician–Silurian metamorphic overgrowth, which seem to be mainly sourced from the Mixteca region or the southern Chiapas Massif. Devonian basement has only been discovered in the Maya Mountains of Belize, and detrital zircon of such age seems to be characteristic of that source. A similar case can be made about Carboniferous zircon and the Acatlán Complex, Middle Pennsylvanian zircon and Juchatengo plutons, and Late Triassic zircon and the basement exposed in central Guatemala. In all these cases, the age and geographic extent of the zircon source are restricted and serve as a distinct fingerprint. Plutons of Permian–Early Triassic age are widespread, and detrital zircon grains from them are rather nonspecific indicators of source area. Future dating of detrital white mica using 40Ar-39Ar could help in recognizing Carboniferous–Triassic schist from more restricted schist occurrences such as west Cuicateco (Early Cretaceous) and central Guatemala (Late Cretaceous).
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Conference papers on the topic "Stratigraphic Silurian"

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McAdams, Neo E. B., Bradley D. Cramer, Alyssa M. Bancroft, Michael Melchin, Joseph Devera, and James Day. "STRATIGRAPHIC REVISION AND HIGH-RESOLUTION CHRONOSTRATIGRAPHIC CORRELATION OF THE SILURIAN BAINBRIDGE GROUP, ILLINOIS BASIN." In 52nd Annual North-Central GSA Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018nc-313090.

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Lasemi, Yaghoob. "STRATIGRAPHIC ARCHITECTURE AND RESERVOIR CHARACTERIZATION OF THE SILURIAN RACINE FORMATION, FORSYTH FIELD, CENTRAL ILLINOIS." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-303651.

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Wright, Milly, Guoyan Mu, Shiqian Wang, Bao Liu, Emma Davies, and Navpreet Singh. "Chemostratigraphy and Sequence Stratigraphic Investigation of the Lower Silurian - Upper Ordovician Hot Shale, Southeastern of the Sichuan Basin." In SPE Unconventional Resources Conference and Exhibition-Asia Pacific. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/167022-ms.

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Jarochowska, Emilia, David C. Ray, Philipp Röstel, Graham Worton, and Axel Munnecke. "HARNESSING THE STRATIGRAPHIC BIAS AT THE SECTION SCALE: CONODONT DIVERSITY IN THE HOMERIAN (SILURIAN) OF THE MIDLAND PLATFORM, ENGLAND." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-305106.

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Gauvey, K. L., J. B. Sumrall, J. N. Leesburg, E. B. Larson, and M. S. Hahn. "STRATIGRAPHIC FRAMEWORK OF SILICIFICATION IN THE MIDDLE SILURIAN CARBONATES OF THE ST. IGNACE DISTRICT OF THE HIAWATHA NATIONAL FOREST, UP MICHIGAN." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-304591.

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Kleffner, Mark A. "LOWER SILURIAN STRATIGRAPHIC SECTION OF JOHN BRYAN STATE PARK, GREENE COUNTY, OHIO, AS A PROXY FOR THE PROBABLE INCOMPLETELY RECOGNIZED COMPLEXITY OF THE LOWER SILURIAN (LLANDOVERY) OF THE NORTH AMERICAN MIDWESTERN BASINS AND ARCHES REGION BASED ON CONODONT BIOSTRATIGRAPHY AND δ13CCARBCHEMOSTRATIGRAPHY." In 50th Annual GSA North-Central Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016nc-275119.

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Paktovsky, Y. G. "THE THEORY ASPECT OF THE SILURIAN EMERSIVE FRONTIER OF SOUTH CIS-TYMAN." In Проблемы минералогии, петрографии и металлогении. Научные чтения памяти П. Н. Чирвинского. Пермский государственный национальный исследовательский университет, 2021. http://dx.doi.org/10.17072/chirvinsky.2021.166.

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To denote the time and facies boundaries of the emersive phase, the concept of the emersive frontier is introduced by analogy with the term mineralogical frontier. The most important is the emersive frontier before the beginning of transgression. It is clearly distinguished in the stratigraphy of sedimentary deposits. The end of the early Paleozoic emersive phase occurred at the beginning of the Silurian transgressive cycle, and is therefore called the Silurian emersive frontier.
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Benfield, Adam J., Timothy S. White, and Alexander Bartholomew. "CARBON ISOTOPE STRATIGRAPHY OF THE SILURIAN HIGH FALLS FORMATION, SOUTHEASTERN NY." In 51st Annual Northeastern GSA Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016ne-272718.

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Bartholomew, Alex. "CORRELATION AND REVISION OF UPPER SILURIAN STRATIGRAPHY ACROSS NEW YORK STATE." In 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-310383.

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Wheatcroft, Audrey, Erik J. Divan, J. Dykstra Eusden, and Paul B. O'Sullivan. "SILURIAN STRATIGRAPHY AND GEOCHRONOLOGY IN THE MIGMATITE TERRAIN OF WESTERN MAINE." In Joint 52nd Northeastern Annual Section and 51st North-Central Annual GSA Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017ne-290863.

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Reports on the topic "Stratigraphic Silurian"

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Cecile, M. P., B. S. Norford, G. S. Nowlan, and T. T. Uyeno. Lower Paleozoic stratigraphy and geology, Richardson Mountains, Yukon (with stratigraphic and paleontological appendices). Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329454.

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The Richardson Trough was a rift basin on the southern margin of an ancestral Iapetus Ocean. It was part of a complex paleogeography that included at least two major rift basins on western Franklinian and northern Cordilleran continental shelves. This paleogeography included the Ogilvie Arch, Porcupine Platform, Blackstone 'supra-basin', Babbage Basin, Husky Lakes Arch, Richardson Trough, Mackenzie Arch, Lac des Bois Platform, and the White Mountains and Campbell uplifts. The Richardson Trough was the failed arm of a triple rift system that formed when an early Paleozoic Iapetus Ocean developed north of the trough. The Richardson Trough displays a classic 'steer's head' profile with two rift fill cycles. The first features late early to middle late Cambrian rifting and late late Cambrian to late Early Ordovician post-rift subsidence; the second, late Early Ordovician to early Silurian rifting and late early Silurian to early Middle Devonian post-rift subsidence. Lower Paleozoic strata exposed in the Richardson Trough range in age from middle Cambrian to early Middle Devonian and are similar to strata in their sister rift, the Misty Creek Embayment. Before this study, the stratigraphic units defined for the Richardson Trough were the Slats Creek Formation and the Road River Formation. Here, the Slats Creek Formation and a new Road River Group are recognized. In order, this group consists of the middle and/or late Cambrian to Early Ordovician Cronin Formation; the early Early Ordovician to latest early Silurian Mount Hare Formation; the early Silurian to late Silurian Tetlit Formation; and the late Silurian to early Middle Devonian Vittrekwa Formation. These Road River Group strata are unconformably overlain by the late Middle to Late Devonian Canol Formation (outcrop) and by the Early Devonian Tatsieta Formation (subsurface).
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Armstrong, D. K., M. P. B. Nicolas, K. E. Hahn, and D. Lavoie. Stratigraphic synthesis of the Hudson Platform in Manitoba, Ontario, and Nunavut: Ordovician-Silurian. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2018. http://dx.doi.org/10.4095/308418.

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Norford, B. S. Ordovician and Silurian strata of northeastern British Columbia: stratigraphic sections and synthesis of biostratigraphy. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/299866.

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Larmagnat, S., and D. Lavoie. Regional and global correlations of the Devonian stratigraphic succession in the Hudson Bay and Moose River basins from onshore Manitoba and Ontario to offshore Hudson Bay. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/326091.

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The Devonian successions in northeastern Manitoba and northern Ontario are integrated in a single stratigraphic framework. To the north, in the offshore Hudson Bay Basin, stratigraphic nomenclaturesare unified and correlated with the successions to the south. The carbon stable-isotope (d13CVPDB) trends for Devonian carbonate rocks are used for regional correlations and are compared with global Devonian isotope trends. Local and global d13CVPDB trends are used to evaluate the position of the Silurian-Devonian boundary in the Hudson Bay Platform. The Devonian succession of the Hudson Bay Platform belongs to the Kaskaskia Sequence and compares with similar carbonate-evaporite successions of the adjacent Williston and Michigan basins. In these basins, two episodes of roughly coeval reef development are present (Emsian-Eifelian and Givetian), with corals and stromatoporoids as main framework constituents. The Hudson Bay Platform reefs and dolomitized facies exhibit significant porosity and have the potential to form hydrocarbon reservoirs, with intervals bearing direct and petrophysical evidence of hydrocarbon charge.
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Brunton, F. R., E. H. Priebe, and K. Yeung. Relating sequence stratigraphic and karstic controls of regional groundwater flow zones and hydrochemistry within the Early Silurian Lockport Group of the Niagara Escarpment, southern Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2016. http://dx.doi.org/10.4095/297726.

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Cecile, M. P., and B. S. Norford. Ordovician and Silurian [Chapter 4: Stratigraphy]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/192361.

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Mueller, C., S. J. Piercey, M. G. Babechuk, and D. Copeland. Stratigraphy and lithogeochemistry of the Goldenville horizon and associated rocks, Baie Verte Peninsula, Newfoundland. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328990.

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The Goldenville horizon in the Baie Verte Peninsula is an important stratigraphic horizon that hosts primary (Cambrian to Ordovician) exhalative magnetite and pyrite and was a chemical trap for younger (Silurian to Devonian) orogenic gold mineralization. The horizon is overlain by basaltic flows and volcaniclastic rocks, is intercalated with variably coloured argillites and cherts, and underlain by mafic volcaniclastic rocks; the entire stratigraphy is cut by younger fine-grained mafic dykes and coarser gabbro. Lithogeochemical signatures of the Goldenville horizon allow it to be divided into high-Fe iron formation (HIF; >50% Fe2O3), low-Fe iron formation (LIF; 15-50% Fe2O3), and argillite with iron minerals (AIF; <15% Fe2O3). These variably Fe-rich rocks have Fe-Ti-Mn-Al systematics consistent with element derivation from varying mineral contributions from hydrothermal venting and ambient detrital sedimentation. Post-Archean Australian Shale (PAAS)-normalized rare earth element (REE) signatures for the HIF samples have negative Ce anomalies and patterns similar to modern hydrothermal sediment deposited under oxygenated ocean conditions. The PAAS-normalized REE signatures of LIF samples have positive Ce anomalies, similar to hydrothermal sediment deposited under anoxic to sub-oxic conditions. The paradoxical Ce behaviour is potentially explained by the Mn geochemistry of the LIF samples. The LIF have elevated MnO contents (2.0-7.5 weight %), suggesting that Mn from hydrothermal fluids was oxidized in an oxygenated water column during hydrothermal venting, Mn-oxides then scavenged Ce from seawater, and these Mn-oxides were subsequently deposited in the hydrothermal sediment. The Mn-rich LIF samples with positive Ce anomalies are intercalated with HIF with negative Ce anomalies, both regionally and on a metre scale within drill holes. Thus, the LIF positive Ce anomaly signature may record extended and particle-specific scavenging rather than sub-oxic/redox-stratified marine conditions. Collectively, results suggest that the Cambro-Ordovician Taconic seaway along the Laurentian margin may have been completely or near-completely oxygenated at the time of Goldenville horizon deposition.
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Cecile, M. P., and B. S. Norford. Ordovicien et Silurien (Chapitre 4: Stratigraphie). Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/192393.

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Currie, K. L. Ordovician-Silurian stratigraphy between Gander Bay and Birchy Bay, Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/134266.

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Struik, L. C. Devonian, Silurian, Cambrian and Precambrian Stratigraphy, McLeod Lake map area, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/127462.

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