Relevant bibliographies by topics / Stratigraphic Sediments (Geology) Palynology

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Academic literature on the topic 'Stratigraphic Sediments (Geology) Palynology'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Stratigraphic Sediments (Geology) Palynology"

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Harland, R., Anne P. Bonny, M. J. Hughes, and A. N. Morigi. "The Lower Pleistocene stratigraphy of the Ormesby Borehole, Norfolk, England." Geological Magazine 128, no. 6 (1991): 647–60. http://dx.doi.org/10.1017/s0016756800019749.

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AbstractThe sedimentology, micropalaepntology and palynology of Lower Pleistocene sediments recovered from a borehole at Ormesby St Margaret, near Great Yarmouth, Norfolk, have been investigated. The sediments, consisting of a lower clay facies overlain by an upper predominantly sandy facies, were deposited in inner neritic environments. Micropalaeontological and palynologicalevidence allows comparisons with the nearby Ludham sequence but an unequivocal correlation cannot be made. The Ormesby Borehole sequence includes representatives of the Pre-Ludhamian to Early Pastonian stage interval and the presence of a late Pre-Ludhamian to late Baventian/Pre-Pastonian a hiatus. Foraminiferal faunas matched to grain size analysis are indicative of transportation and considerable post-mortem sorting.
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Weston, Janice F., R. Andrew MacRae, Piero Ascoli, et al. "A revised biostratigraphic and well-log sequence-stratigraphic framework for the Scotian Margin, offshore eastern Canada 1This article is one of a series of papers published in this CJES Special Issue on the theme of Mesozoic–Cenozoic geology of the Scotian Basin. 2Earth Sciences Sector Contribution 20120137." Canadian Journal of Earth Sciences 49, no. 12 (2012): 1417–62. http://dx.doi.org/10.1139/e2012-070.

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In this study, we build on a foundation of previous biostratigraphic studies for the Scotian Basin, offshore eastern Canada, by conducting new quantitative multidisciplinary biostratigraphic studies of the Mesozoic sections in eight wells: Bonnet P-23, Chebucto K-90, Cohasset L-97, Glenelg J-48, Glooscap C-63, Mohican I-100, South Desbarres O-76, and South Griffin J-13. These wells were chosen to provide good spatial coverage, stratigraphic penetration, and correlation with the seismic grid. We have also evaluated pre-existing biostratigraphic data and undertaken the well-log sequence-stratigraphic interpretation of Upper Triassic to Cenozoic sediments in 16 additional wells using a consistent multidisciplinary event scheme derived from the new wells. Key to the dating of some horizons has been integration of the palynology and micropaleontology (disciplines mostly used previously on the Scotian Margin) with new nannofossil data. Simultaneously we have closely integrated the biostratigraphic results with lithofacies, well-log, and seismic interpretations. Using this integrated approach, we have identified nine regionally mappable sequence-stratigraphic events (unconformities and maximum flooding surfaces, or MFSs): the Intra-Oligocene Unconformity; the Ypresian Unconformity; the Turonian/Cenomanian Unconformity; the Late Albian Unconformity; the Aptian/Barremian Unconformity; the Intra-Hauterivian MFS; the Near-Base Cretaceous Unconformity; the Tithonian MFS; and the Top-Callovian MFS. Additional events of local extent were also recognized in some wells. Our study has led to significant revision of some previous lithostratigraphic picks. The Early Jurassic on the Scotian Margin remains poorly resolved and may be represented by an unconformity on much of the basin periphery.
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Dechesne, Marieke, Ellen D. Currano, Regan E. Dunn, et al. "A new stratigraphic framework and constraints for the position of the Paleocene–Eocene boundary in the rapidly subsiding Hanna Basin, Wyoming." Geosphere 16, no. 2 (2020): 594–618. http://dx.doi.org/10.1130/ges02118.1.

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Abstract The Paleocene–Eocene strata of the rapidly subsiding Hanna Basin give insights in sedimentation patterns and regional paleogeography during the Laramide orogeny and across the climatic event at the Paleocene–Eocene Thermal Maximum (PETM). Abundant coalbeds and carbonaceous shales of the fluvial, paludal, and lacustrine strata of the Hanna Formation offer a different depositional setting than PETM sections described in the nearby Piceance and Bighorn Basins, and the uniquely high sediment accumulation rates give an expanded and near-complete record across this interval. Stratigraphic sections were measured for an ∼1250 m interval spanning the Paleocene–Eocene boundary across the northeastern syncline of the basin, documenting depositional changes between axial fluvial sandstones, basin margin, paludal, floodplain, and lacustrine deposits. Leaf macrofossils, palynology, mollusks, δ13C isotopes of bulk organic matter, and zircon sample locations were integrated within the stratigraphic framework and refined the position of the PETM. As observed in other basins of the same age, an interval of coarse, amalgamated sandstones occurs as a response to the PETM. Although this pulse of relatively coarser sediment appears related to climate change at the PETM, it must be noted that several very similar sandstone bodies occur with the Hanna Formation. These sandstones occur in regular intervals and have an apparent cyclic pattern; however, age control is not sufficient yet to address the origin of the cyclicity. Signs of increased ponding and lake expansion upward in the section appear to be a response to basin isolation by emerging Laramide uplifts.
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Osorio-Granada, E., A. Pardo-Trujillo, S. A. Restrepo-Moreno, et al. "Provenance of Eocene–Oligocene sediments in the San Jacinto Fold Belt: Paleogeographic and geodynamic implications for the northern Andes and the southern Caribbean." Geosphere 16, no. 1 (2019): 210–28. http://dx.doi.org/10.1130/ges02059.1.

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Abstract Mesozoic and Cenozoic strata of the San Jacinto Fold Belt (Colombian Caribbean) provide insights about sedimentary environments and paleogeographic evolution in the transition between the northern Andes and the South Caribbean deformed belt. We report new provenance (conventional sandstone petrography, heavy mineral analysis, and detrital zircon U-Pb geochronology and typology) and micropaleontologic data (palynology, calcareous nannofossils, and foraminifera) in samples collected from the lower Eocene (San Cayetano Formation) and upper Eocene–Oligocene (Toluviejo and Ciénaga de Oro Formations) rocks in boreholes drilled by the Colombian Agencia Nacional de Hidrocarburos as well as from recently exposed Oligocene outcrops from the Ciénaga de Oro Formation. Sandstone petrography shows modal variations, with high feldspar content in the lower Eocene rocks and high quartz content in the Oligocene deposits. This shift in compositional maturity may be due to climatic variations, tectonic activity, and/or changes in source areas. Heavy mineral analyses indicate variations that suggest sources primarily related to felsic igneous and/or low-grade metamorphic and mafic and ultramafic rocks. Zircon U-Pb geochronology displays age populations mainly in the Late Cretaceous, Late Jurassic, Permian–Triassic, and Precambrian (ca. 900–1500 Ma). In addition, zircon typology analyses indicate that the igneous zircons came primarily from monzogranites and granodiorites. Finally, the micropaleontologic and sedimentary data sets indicate that the sediments were deposited in tropical coastal and shallow marine environments. The sediments were transported by short rivers from the crystalline massifs of the Lower Magdalena Valley and the northern Central Cordillera basements, while distal transport of sediments may have occurred along longer rivers, which brought sediments from southern regions located between the Central and Western Cordilleras.
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Casson, Max, Jason Jeremiah, Gérôme Calvès, et al. "Evaluating the segmented post-rift stratigraphic architecture of the Guyanas continental margin." Petroleum Geoscience 27, no. 3 (2021): petgeo2020–099. http://dx.doi.org/10.1144/petgeo2020-099.

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Segmentation of the Guyanas continental margin of South America is inherited from the dual-phase Mesozoic rifting history controlling the first-order post-rift sedimentary architecture. The margin is divided into two segments by a transform marginal plateau (TMP), the Demerara Rise, into the Central and Equatorial Atlantic domains. This paper investigates the heterogeneities in the post-rift sedimentary systems at a mega-regional scale (>1000 km). Re-sampling seven key exploration wells and scientific boreholes provides new data (189 analysed samples) that have been used to build a high-resolution stratigraphic framework using multiple biostratigraphic techniques integrated with organic geochemistry to refine the timing of 10 key stratigraphic surfaces and three megasequences. The results have been used to calibrate the interpretation of a margin-scale two-dimensional seismic reflection dataset, and to build megasequence isochore maps, structural restorations and gross depositional environment maps at key time intervals of the margin evolution.Our findings revise the dating of the basal succession drilled by the A2-1 well, indicating that the oldest post-rift sequence penetrated along the margin is late Tithonian age (previously Callovian). Early Central Atlantic carbonate platform sediments passively infilled subcircular-shaped basement topography controlled by the underlying basement structure of thinned continental crust. Barremian–Aptian rifting in the Equatorial Atlantic, caused folding and thrusting of the Demerara Rise, resulting in major uplift, gravitational margin collapse, transpressional structures and peneplanation of up to 1 km of sediment capped by the regional angular Base Albian Unconformity. Equatorial Atlantic rifting led to margin segmentation and the formation of the TMP, where two major unconformities developed during the intra Late Albian and base Cenomanian. These two unconformities are time synchronous with oceanic crust accretion offshore French Guiana and in the Demerara–Guinea transform, respectively. A marine connection between the Central and Equatorial Atlantic is demonstrated by middle Late Albian times, coinciding with deposition of the organic-rich source rock of the Canje Formation (average total organic carbon 4.21%). The succession is variably truncated by the Middle Campanian Unconformity. Refining the stratigraphic framework within the context of the structural evolution and segmentation of the Guyanas margin impacts the understanding of key petroleum system elements.Supplementary material: Photographs of sandstone petrography thin sections (Fig. S1); calcareous nannofossil plates (Fig. S2); palynology reports for A2-1 and FG2-1 (Fig. S3); taxonomy description of new species; sample table and organic geochemistry results (Table S1); and nannofossil distribution charts (Table S2) are available at https://doi.org/10.6084/m9.figshare.c.5280490
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Steemans, Philippe, and Egberto Pereira. "Llandovery miospore biostratigraphy and stratigraphic evolution of the Paraná Basin, Paraguay – Palaeogeographic implications." Bulletin de la Société Géologique de France 173, no. 5 (2002): 407–14. http://dx.doi.org/10.2113/173.5.407.

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Abstract The Paraná Basin covers 1,600,000 km2 including parts of southern Brazil, Paraguay, Uruguay and Argentina. It contains rocks ranging from the Ordovician to Tertiary in age. The present study is focused on the Itacurubí Group, of Llandovery age, from Paraguay. The sedimentology and palynology have been studied in three boreholes from the central part of Paraguay. The Itacurubí Group consists of the Euzébio Ayala, Vargas Peña and Cariy Formations. It corresponds to a complete transgressive – regressive cycle with maximum flooding in the Vargas Peña Formation. The sediments of the group were deposited in a glaciomarine regime and are included in the second order sequence. The palynofacies are dominated by acritarchs and chitinozoans, with miospores rare. Among the latter, cryptospores are most abundant and trilete spores very rare. The miospore assemblages are typical of the Llandovery. The presence of Laevolancis divellomedia and the successive first occurrence of the trilete spore genus Ambitisporites, followed by Archaeozonotriletes, allow the recognition of three biozones: divellomedia I, divellomedia II and chulusnanus. Correlations between the three boreholes based on miospore biostratigraphy and sequence stratigraphy techniques are similar. The miospore assemblages have important palaeogeographic implications: Ordovician / Silurian miospore assemblages, identified in South America are similar to those described in palaeogeographically distinct regions such as China, UK, Belgium, USA etc. This suggests that the phytogeographical differentiation proposed by Gray et al. [1992], with a Malvinokaffric Realm characterised by smooth tetrads and an extra-Malvinokaffric Realm characterised by ornamented tetrads, has to be reconsidered. Clearly, the same miospores are recovered from both regions, no matter if they are close to the palaeo-equator or the palaeo-pole, as is the case in Paraguay. These findings suggest that the same vegetation could survive under various climates. In theory, large oceans could be impassable geographic barriers for land plant miospores larger than 25 μm in diameter. As similar miospore assemblages occur, around the Ordovician – Silurian boundary, on the Gondwana, Avalonia and Laurentia plates, it seems likely that these palaeo-continental plates were in close proximity permitting the expansion of the vegetation through these continents. Therefore, palaeogeographic reconstructions with narrow oceans between the continents better explain early miospore biogeographies in early Silurian times. Maps produced by Dalziel et al. [1994] better explain the diachronism of trilete spore first appearances: Hirnantian in Turkey, Rhuddanian in Saudi Arabia, early Aeronian in Libya, late Aeronian in Paraguay, latest Aeronian in UK, and possibly Telychian in USA. The Baltica plate could possibly have been isolated by a geographic barrier during the Ashgill and the Llandovery, as only simple naked tetrads are known from that plate. The first appearance of the trilete spores in Götland during the early Wenlock could correspond to the end of this geographic isolation. This apparent isolation of the Baltica plate could be due to a lack of data.
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Tesakov, Alexey S., Vadim V. Titov, Alexandra N. Simakova, et al. "Late Miocene (Early Turolian) vertebrate faunas and associated biotic record of the Northern Caucasus: Geology, palaeoenvironment, biochronology." Fossil Imprint 73, no. 3-4 (2017): 383–444. http://dx.doi.org/10.2478/if-2017-0021.

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Abstract Late Miocene continental deposits overlying the Khersonian marine sediments near the city of Maikop bordering the Belaya River (North Caucasus) yielded a diverse biotic record including palynology, ostracods, fresh-water and terrestrial molluscs, fishes, amphibians and reptiles, birds, and mammals. The obtained data indicate predominantly wooded landscapes along the banks of a large fresh-water estuarine or lagoonal basin with occasional connection with the sea. The basin existed in a warm temperate to subtropical climate with a high humidity and an estimated mean annual precipitation above 800 mm. The mammalian assemblage with Hipparion spp., Alilepus sp., Paraglirulus schultzi, Eozapus intermedius, Parapodemus lugdunensis, Collimys caucasicus sp. nov., Neocricetodon cf. progressus, etc. is referable to the early Turolian, MN 11. The data regarding composition and stage of evolution of the small mammal content combined with mostly normal polarity of the fossiliferous deposits, and the age estimates of the upper Khersonian boundary as between 8.6 and 7.9 Ma indicate a plausible correlation with Chron C4n and an age range between 8.1–7.6 Ma.
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Dieni, Iginio, Francesco Massari, and Jacques Médus. "Age, depositional environment and stratigraphic value of the Cuccuru ’e Flores Conglomerate: insight into the Palaeogene to Early Miocene geodynamic evolution of Sardinia." Bulletin de la Société Géologique de France 179, no. 1 (2008): 51–72. http://dx.doi.org/10.2113/gssgfbull.179.1.51.

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Abstract The Cuccuru ’e Flores Conglomerate of eastern Sardinia, a syntectonic unit lining major Cenozoic faults, has been dated by means of palynology at the early middle Lutetian. The deposits were mainly laid down by sediment gravity flows in a subaqueous setting and formed aprons of laterally interfingering debris cones at the toe of active tectonic scarps. Most clasts of rudites are of local provenance. Interestingly, the rudites include minor amounts of clasts of formations which no longer crop out in the area, providing important information on the reconstruction of the original stratigraphic succession and palaeogeography, especially during late Cretaceous and early Palaeogene times. During the Eocene, i.e. in a pre-rotation stage, Sardinia was subjected to the influence of both Alpine and Pyrenean orogenic belts. In eastern Sardinia, the compressional stress field was consistent with that existing in the foreland of the Alpine chain in Corsica, and was expressed by significant wrench tectonics affecting the Variscan basement and the pre-Oligocene sedimentary cover. Deformations associated with major strike-slip faults, such as enéchelon folds and positive flower structures occurring in fault-restraining bends, suggest a shortening direction around N105° (in present-day coordinates). A subsequent wrenching phase of Late Oligocene-Early Miocene age involved reactivation of former “Alpine” faults in a sharply different stress field. This tectonics reflects the intermediate position of the eastern Sardinia belt between the area affected by back-arc stretching (the Sardinian rift and the Liguro-Provençal basin) and the arcuate Apenninic subduction front active in a framework of left-lateral oblique plate convergence.
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Czarnecki, Joanna M., Shahin E. Dashtgard, Vera Pospelova, Rolf W. Mathewes, and James A. MacEachern. "Palynology and geochemistry of channel-margin sediments across the tidal–fluvial transition, lower Fraser River, Canada: Implications for the rock record." Marine and Petroleum Geology 51 (March 2014): 152–66. http://dx.doi.org/10.1016/j.marpetgeo.2013.12.008.

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Rohais, Sébastien, Sébastien Joannin, Jean-Paul Colin, Jean-Pierre Suc, François Guillocheau, and Rémi Eschard. "Age and environmental evolution of the syn-rift fill of the southern coast of the gulf of Corinth (Akrata-Derveni region, Greece)." Bulletin de la Société Géologique de France 178, no. 3 (2007): 231–43. http://dx.doi.org/10.2113/gssgfbull.178.3.231.

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Abstract The southern coast of the gulf of Corinth exhibits syn-rift deposits, giving insights into the first stages of continental extension as well as the geodynamic evolution of the surrounding Aegean region. The stratigraphy (relative position, 3D geometry, dating) of these deposits is still subject to controversies. The syn-rift evolution of the central part of the southern coast of the Corinth rift is revisited, based on new sedimentological and paleontological data. While ostracods analysis provides precise information about the paleoenvironments, recent advances in palynology supply a more accurate chronology. For the first time, we document marine evidences and Pleistocene evidences below the well-known giant Gilbert-type fan deltas of the Corinth rift. The syn-rift fill records a three-phase history: (1) the Lower Group corresponds to continental to lacustrine environments passing up progressively to brackish environments with occasionally marine incursions from before 1.8 Ma to some time after 1.5 Ma, (2) the Middle Group corresponds to giant alluvial fans and to Gilbert-type fan deltas prograding in an alternating marine and lacustrine environment from around 1.5 Ma to some time after 0.7 Ma, and (3) the Upper Group corresponds to slope deposits, Gilbert-type fan deltas and marine terraces indicating the emergence of syn-rift sediments along the southern coast from at least 0.4 Ma to the present day, with alternating marine and lacustrine deposition controlled by the position of the Mediterranean sea level relative to the Rion Strait sill.
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Dissertations / Theses on the topic "Stratigraphic Sediments (Geology) Palynology"

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Daly, Robert James. "A palynological study of an extinct Arctic ecosystem from the Palaeocene of Northern Alaska." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=158326.

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Here is presented a high resolution vegetation model and ecological analysis of an extinct floodplain ecosystem based on the palynology of deposits of the Sagwon Bluffs, northeast Alaska.  This fluvio – lacustrine succession of coal – bearing beds is of Late Palaeocene age and dominated by fine-grained sediment interspersed by coarse sandstones and conglomerates.  Deposition occurred at a latitude of ~ 85° N, but owing to the Palaeocene greenhouse climate, mean annual temperatures as high as 6 - 7°C allowed temperate plant ecosystems to exist.  The palynological dataset has been analysed here using ‘Correspondence Analysis’ (CA) and ‘Fuzzy <i>c</i>-Means Cluster analysis’ (FCM), allowing assessment of proposed ecological groups.  Geochemical analysis has been incorporated using ‘Canonical Correspondence Analysis’ (CCA), demonstrating affiliations of certain taxa to chemical signatures of associated sediments.  These techniques collectively reveal a gymnosperm – dominated floodplain forest with a substantial angiosperm, fern and bryophyte component analogous to modern wooded bogs and riparian swamp forests.  Principal taxa of late seral development include <i>Metasequoia, Taxodium, Sequoia </i>and <i>Nyssa, </i>representing the dominant component of such a forest.  Mid seral floras were characterised by coniferous gymnosperm and broad-leaved angiosperm co-dominance, incorporating <i>Corylus, Alnus, Castanea, Ginkgo </i>and a diversity of Pteridaceous, Polypodiaceous, Osmundaceous and Schizaceaen ferns.  Variably high abundances of <i>Sphagnum-</i>type bryophyte spores suggest extensive peat-forming mires.  The inconsistencies of the ecological structure displayed in the palynological assemblage suggest a dynamic floodplain, however, affected by a changing hydrological and climatic regime.  Climate cooling is considered to have affected the floras concurrent with an increasingly wet floodplain prior to a hypothesised period of mountain building to the south.
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Bullock, Michelle. "Holocene sediments and geological history, Woolley Lake, near Beachport, South Australia /." Adelaide : Thesis (B. Sc.(Hons)) -- University of Adelaide, Dept. of Geology and Geophysics, 1994. http://web4.library.adelaide.edu.au/theses/09SB/09sbb938.pdf.

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Queen, Sandra June. "Petrologic characterization and differentiation of Neogene and Pleistocene sediments in the Verdi-Reno Truckee River corridor." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460773.

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Chan, Kin-chung. "The application and significance of sediment colour intensity on the study of offshore quaternary deposits." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B42577202.

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Huang, Guangqing. "Holocene record of storms in sediments of the Pearl River Estuary and vicinity /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21687808.

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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.

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Thesis (Ph. D.)--Missouri University of Science and Technology, 2009.<br>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).
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Craigie, Neil William. "Chemostratigraphy of Middle Devonian lacustrine sediments in the Orcadian Basin, north-east Scotland." Thesis, University of Aberdeen, 1998. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=88106.

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During Middle Devonian times, lacustrine deposition dominated much of NE Scotland including Caithness, Orkney, Shetland and the Inner Moray Firth. Donovan classified such deposits into five distinct facies associations:- the deep water facies association A and the progressively shallower water facies associations B, C, D and sandstones. Such facies associations occur in climatically induced cycles. Facies A sediments (known as "fish beds") are organic rich, comprising triplets of carbonate, clastic and organic laminae (each triplet is c. 1.5mm thick). In the present study the fish beds have been categorised on sedimentological grounds into four subtypes:- types I, II (a and b subtypes), III and IV fish beds. The former, which were deposited under the most reducing, deep water, quiescent conditions, comprise 1.3m+ thick laterally continuous beds containing abundant and well preserved, fully articulated fossil fish. Type II(a), and II(b) and III fish beds are less than 1.3 thick and deposited under increasingly more shallow water and more oxidising conditions. Type II(a) fish beds contain both articulated and dissarticulated fish carcass material while type II(b) fish beds, of similar thickness, contain scattered fish fragments. Type III fish beds occur in close vertical and lateral proximity to fluvial sandstones. Type IV fish beds are carbonate rich and are confined to the south Moray Firth coast. Type I fish beds have the greater source rock potential. It is possible to categorise the Middle Devonian facies, including the fish bed facies, on geochemical grounds. As far as major element geochemistry is concerned, SiO<sub>2</sub> is concentrated principally in detrital quartz, and for this reason is highest within sandstones, while K<sub>2</sub>O, Al<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>O<sub>3</sub> are highest within the clay rich facies C and D. MnO is most concentrated within facies AIII and B, deposited closest to the thermocline. Trace elements were also analysed and are also useful in discriminating facies. Some elements, such as Zr and Nb are highly immobile, being concentrated in the dereital fraction of sandstones. By contrast, Rb, Ba and V are principally concentrated within clay and feldspars and, for this reason, are highly concentrated within the most clay rich deposits (facies D). The distributions of Mo, Cu, Ni, V and Cr are partly controlled by paleoredox and, consequently, may be used to discriminate relatively reducing from oxidising facies. U and Th are most highly concentrated within fish bone/scale material and it is possible to use the U/Th ratio to categorise the fish beds. This ratio is highest within the most reducing fish beds (type I) and in fish beds located close to fluvial sandstones (type III). Type II and IV fish beds have generally lower U/Th ratios. This ratio may be measured where spectral gamma ray logs have been run (e.g. Dounreay boreholes).
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Quintavalle, Marco. "Lower to Middle Ordovician palynomorphs of the Canning Basin, Western Australia /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18370.pdf.

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Zhang, Jiafu. "Development and application of luminescence dating to quaternary sediments from China." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22266628.

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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.

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Books on the topic "Stratigraphic Sediments (Geology) Palynology"

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Sirkin, Leslie A. Palynology and stratigraphy of Cretaceous and Pleistocene sediments on Long Island, New York--a basis for correlation with New Jersey coastal plain sediments. U.S. G.P.O., 1986.

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Mildenhall, D. C. Palynological reconnaissance of Early Cretaceous to Holocene sediments, Chatham Islands, New Zealand. Institute of Geological & Nuclear Sciences Ltd, 1994.

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Utting, J. Palynostratigraphy of Permian and Lower Triassic rocks, Sverdrup Basin, Canadian Arctic Archipelago. Geological Survey of Canada, 1994.

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Groot, Johan J. The Pliocene and Quaternary deposits of Delaware: Palynology, ages, and paleoenvironments. University of Delaware, 1999.

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Nichols, Douglas J. Palynostratigraphy of the Tullock Member (lower Paleocene) of the Fort Union Formation in the Powder River Basin, Montana and Wyoming. U.S. G.P.O., 1992.

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Raymond, Dorothy E. Post-Miocene sediments of the shallow subsurface of coastal Alabama. Geological Survey of Alabama, Geology and Mapping Division, 1993.

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Ning, Shi. The late Cenozoic stratigraphy, chronology, palynology, and environmental development in the Yushe basin, north China. Societas Upsaliensis pro Geologia Quaternaria, 1994.

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Burger, D. Stratigraphy, palynology, and palaeoenvironments of the Hooray Sandstone, eastern Eromanga Basin, Queensland and New South Wales. Queensland Dept. of Mines, 1989.

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Olsen, Henrik. Lithostratigraphy of the continental Devonian sediments in north-east Greenland. Grønlands geologiske undersøgelse, 1993.

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Dybkjær, Karen. Palynological zonation and stratigraphy of the Jurassic section in the Gassum no. 1-borehole, Denmark. I kommission hos C.A. Reitzels forlag, 1988.

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Book chapters on the topic "Stratigraphic Sediments (Geology) Palynology"

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Gabdullin, Ruslan, Valentina Vishnevskaya, Ludmila Kopaevich, et al. "Lithological–Stratigraphic Characteristics of the Aptian–Cenomanian Sediments of the Abkhazian Zone, Western Caucasus." In Springer Geology. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_97.

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Delikan, Arif, and Nesrin Atasagun. "Stratigraphic and Sedimentological Characteristics of Jurassic–Lower Cretaceous Sediments at Kösrelik–Kösrelikiziği (North of Ankara, Turkey)." In Springer Geology. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_93.

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Lenz, Olaf K., Volker Wilde, and Walter Riegel. "Palynology as a High-Resolution Tool for Cyclostratigraphy in Middle Eocene Lacustrine Sediments: The Outstanding Record of Messel (Germany)." In Springer Geology. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_23.

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Kelly, S. B., and J. M. Cubitt. "Milankovitch Cyclicity In The Stratigraphic Record— A Review." In Computers in Geology - 25 Years of Progress. Oxford University Press, 1994. http://dx.doi.org/10.1093/oso/9780195085938.003.0016.

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The Milankovitch or astronomical theory of paleoclimates relates climatic variation to the amount of solar energy available at the Earth's surface. The theory helps explain periodic, climatically related phenomena such as the Pleistocene ice ages. Identification of Milankovitch cyclicity within sediments demonstrates the influence of climate on sedimentation patterns and creates a time frame for the estimation of basin subsidence rates. Spectral analysis of deep sea and ice cores indicates periodic climatic fluctuations during Tertiary and Quaternary times. These fluctuations are strongly cyclical with low frequencies centered at periods around 400 ka and 100 ka together with shorter periodic components of approximately 41 and 21 ka. Lower frequencies reflect eccentricity of the Earth's orbit; 41- and 21-ka components are associated with periodic changes in the tilt of the Earth's axis and the precession of the equinoxes. Astronomically forced glacial eustasy results in distinct stratigraphic units or parasequences of widespread extent. Milankovitch band parasequences occur in both carbonate and clastic shelf systems, including cyclothemic Upper Paleozoic successions of North America. During the 1920's and 30's the Serbian mathematician Milutin Milankovitch studied cyclical variations in three elements of the Earth-Sun geometry: eccentricity, precession, and obliquity, and was able to calculate the Earth's solar radiation history for the past 650 ka (Milankovitch, 1969). Berger (1978, 1980) accurately determined the periodicities of the three orbital variations. Eccentricity—The Earth's orbit around the Sun is an ellipse; this results in the seasons. The eccentricity of the Earth's orbit periodically departs further from a circle and then reverts to almost true circularity. Periodicities are located around 413, 95, 123, and 100 ka. Secondary peaks appear to be located around 50 and 53 ka. There are further important periodicities at 1.23, 2.04, and 3.4 ma (Schwarzacher, 1991). Precession—Precession refers to variation in time of year at which the Earth is nearest the Sun (perihelion). This variation is caused by the Earth wobbling like a top and swiveling on its axis. Periodicities of 23,000, 22,400, 18,980, and 19,610 yr are recognized and often simplified to two periods of 19 and 23 ka. Secondary peaks are also located around 30 and 15 ka.
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Holliday, Vance T. "Soil Stratigraphy." In Soils in Archaeological Research. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195149654.003.0008.

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Soils have been employed in archaeological stratigraphy since at least the 1930s, including topical discussions of the significance of soils in stratified deposits (e.g., Leighton, 1936, 1937; Bryan and Albritton, 1943). This apparently was for several reasons. The unique physical and chemical properties that distinguish soils from sediments make soils quite useful for stratigraphic subdivision and correlation. In particular, pedologic features, most notably soil horizons, are often the most visually prominent features in stratified deposits. Furthermore, much of the early archaeological pedology was done by individuals trained in Quaternary geology (e.g., Leighton, 1937; Bryan, 1941a; Bryan and Albritton, 1943; Movius, 1944, pp. 49–62), in which soils have been recognized as stratigraphically important since the late 19th century (Bowen, 1978, pp. 10–56; Finkl, 1980; Tandarich, 1998a). The recognition of soils and the differentiation of soils from sediments in archaeological contexts is one of the most fundamentally significant aspects of geoarchaeological stratigraphy. This initial step in stratigraphic interpretation is crucial to most of the applications of pedology and soil geomorphology discussed in subsequent chapters. Because soils indicate periods of stability or hiatuses in deposition, the identification of soils or the lack thereof in a stratigraphic sequence provides information on the number of depositional episodes and intervals of stability. The identification of specific soil horizons also provides clues to the degree and duration of soil development, the nature of the soil-forming environment, and the kinds of soil-forming processes that may affect the archaeological record. Further, tracing of soils from exposure to exposure is a key aspect of correlating strata and interpreting the evolution of archaeological landscapes. This chapter presents a discussion of some principals of soil stratigraphy, and the following chapter focuses on the archaeological significance of soils as stratigraphic units. This chapter begins with a discussion of basic stratigraphy, which is one of the fundamental components of field-based geoscience. That section is followed by a closer look at soil stratigraphy, including a summary of both formal and informal soil stratigraphic nomenclature as well as a discussion of the unique characteristics of soils when used as stratigraphic markers and their archaeological implications.
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Unruh, Jeffrey. "Upper plate deformation during blueschist exhumation, ancestral western California forearc basin, from stratigraphic and structural relationships at Mount Diablo and in the Rio Vista Basin." In Regional Geology of Mount Diablo, California: Its Tectonic Evolution on the North America Plate Boundary. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.1217(10).

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ABSTRACT Late Cenozoic growth of the Mount Diablo anticline in the eastern San Francisco Bay area, California, USA, has produced unique 3D exposures of stratigraphic relationships and normal faults that record Late Cretaceous uplift and early Tertiary extension in the ancestral California forearc basin. Several early Tertiary normal faults on the northeast flank of Mount Diablo have been correlated with structures that accommodated Paleogene subsidence of the now-buried Rio Vista basin north of Mount Diablo. Stepwise restoration of deformation at Mount Diablo reveals that the normal faults probably root into the “Mount Diablo fault,” a structure that juxtaposes blueschist-facies rocks of the Franciscan accretionary complex with attenuated remnants of the ophiolitic forearc basement and relatively unmetamorphosed marine forearc sediments. This structure is the local equivalent of the Coast Range fault, which is the regional contact between high-pressure Franciscan rocks and structurally overlying forearc basement in the northern Coast Ranges and Diablo Range, and it is folded about the axis of the Mount Diablo anticline. Apatite fission-track analyses indicate that the Franciscan rocks at Mount Diablo were exhumed and cooled from depths of 20+ km in the subduction zone between ca. 70−50 Ma. Angular unconformities and growth relations in the Cretaceous and Paleogene stratigraphic sections on the northeast side of Mount Diablo, and in the Rio Vista basin to the north, indicate that wholesale uplift, eastward tilting, and extension of the western forearc basin were coeval with blueschist exhumation. Previous workers have interpreted the structural relief associated with this uplift and tilting, as well as the appearance of Franciscan blueschist detritus in Late Cretaceous and early Tertiary forearc strata, as evidence for an “ancestral Mount Diablo high,” an emergent Franciscan highland bordering the forearc basin to the west. This outer-arc high is here interpreted to be the uplifted footwall of Coast Range fault. The stratigraphic and structural relations exposed at Mount Diablo support models for exposure of Franciscan blueschists primarily through syn-subduction extension and attenuation of the overlying forearc crust in the hanging wall of the Coast Range fault, accompanied by (local?) uplift and erosion of the exhumed accretionary prism in the footwall.
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Tedesco, Steven A. "Correlation of stable carbon isotope, reflectance, and total organic carbon that help provide a new stratigraphic framework for defining Desmoinesian and Atokan sediments in the Denver and Cherokee basins in the Mid-continent United States." In Methods and Applications in Petroleum and Mineral Exploration and Engineering Geology. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-323-85617-1.00004-7.

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Conference papers on the topic "Stratigraphic Sediments (Geology) Palynology"

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Fulton, Michael, and Peter P. McLaughlin. "STRATIGRAPHIC CORRELATION OF THE HETEROGENEOUS CRETACEOUS AGED SEDIMENTS OF THE POTOMAC FORMATION IN NEW CASTLE COUNTY, DELAWARE THROUGH EXAMINATION OF CORE, WELL LOGS, AND PALYNOLOGY." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-320641.

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