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Showing 1 to 20 of 23 for “"chemostratigraphy"”.
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Chemostratigraphy of the Uppermost Cambrian Below the Ordovician GSSP
Chemostratigraphy is an important tool for correlating layered sedimentary rock successions. Preserved/near primary carbon isotope signatures in marine carbonates can provide high-resolution profiles for sedimentary sequences supplementing the need for distinguishing fossils from different …
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Chemostratigraphy of the Early Paleoproterozoic carbonate successions (Kaapvaal and Wyoming cratons)
Evidence of three glaciations in Paleoproterozoic successions of North America and at least one on three other continents, suggests that these glaciations were of global extent. In common with the Neoproterozoic record, carbonates cap the glacials. However, the relationship between biogeochemical …
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Geochemical Characterization of the Utica Shale Play using XRF-Based Chemostratigraphy in Ohio
… by a change in log values. Here we show that chemostratigraphy reflects changes in depositional and facies characteristics of the Utica shale and Point Pleasant Formation.</p> <p>For this study, two cores were analyzed using a handheld x-ray fluorescence (HH-XRF) spectrometer along with core …
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GEOCHEMICAL CHARACTERIZATION OF THE BONE SPRING FORMATION, DELAWARE BASIN, USING CHEMOSTRATIGRAPHY AND INTEGRATED PETROPHYSICS
<p>The Delaware Basin forms part of West Texas's and New Mexico’s famous petroleum-generating Permian Basin. The Bone Spring Formation is a prolific hydrocarbon producer within this basin, creating one of the world’s richest oil shales. This formation has lithological sequences that are …
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Characterization of Cenomanian-early Turonian bentonites in southwestern Saskatchewan through lithostratigraphy and chemostratigraphy analysis
… study show that bentonite lithostratigraphy and chemostratigraphy have great promise in local and regional correlation and that bentonite is readily identifiable through a combination of core examination and geophysical well log studies. Analysis of crystals within can provide a fingerprint for …
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Chemostratigraphy of Carbonate Gravity Flows of the Wolfcamp Formation in Crockett County, Midland Basin, Texas
… deposits can be studied by utilizing chemostratigraphy and higher-order sequence stratigraphy; being an accurate method for reservoir characterization. Studying these gravity flows along a carbonate platform’s slope can further expand an understanding of the stratigraphy that is …
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Sm-Nd and C-isotope chemostratigraphy of Ordovician epeiric sea carbonates, midcontinent of North America
Interpreting and correlating epeiric sea sequences is key to understanding ancient marine environments. As a result, eNd, d13C and Sm/Nd profiles are developed as tools for interpreting epeiric sea carbonates. Previously, eNd and d13C profiles in epeiric sea carbonates have been used to study …
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Bulk Rock Major and Trace element Chemostratigraphy of the Cretaceous Lower Eagle Ford Formation in South Texas
The Eagle Ford Formation is an unconventional hydrocarbon source rock play in South Texas which produces oil, condensate, and gas from its organic-rich shales deposited in the Late Cretaceous. Twenty-three whole rock samples of the Lower Eagle Ford from a 120.85 ft core from La Salle County, Texas …
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Mixed Carbonate-Siliciclastic Sequence Development and Chemostratigraphy On a Distal Foreland During Miocene Glaciation, Eastern Saudi Arabia
The Miocene of the Lidam area, Eastern Province, Saudi Arabia, was studied to examine the interaction of glacio-esustasy during moderate Antarctic glaciation, within a small back bulge basin on the slowly subsiding distal Arabian foreland, distal from the active Zagros fold-thrust belt. Low …
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Sequence Stratigraphy and Chemostratigraphy Across the Permo-Triassic Extinction Event, Upper Khuff Carbonates, Ghawar Field, Saudi Arabia
Logging of cores of the Upper Permian and Lower Triassic Khuff Formation, Ghawar, Saudi Arabia, has allowed a high resolution sequence stratigraphic framework to be generated. The lithofacies of this huge, arid epeiric ramp succession include: subaqueous -and supratidal anhydrite, tidal flat …
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Carbonate Carbon Isotope Chemostratigraphy from the Ruby Ranch Member of the Cedar Mountain Formation in the Western San Rafael Swell
The Ruby Ranch Member of the Cedar Mountain Formation in East-Central Utah represents terrestrial deposits in the early Cretaceous Period. This member has been studied at multiple field locations and has been determined to span the Aptian-Albian Boundary based on chemostratigraphic and detrital …
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X-Ray Fluorescence Analysis of Tuscaloosa Marine Shale Cuttings from Horizontally Drilled Wells
… evaluating geochemical properties based on chemostratigraphy of the TMS. The objective of this research is to spatially evaluate geophysical properties and chemostratigraphy of the TMS, to characterize elemental changes along well paths and to evaluate the effect of basic sample clean on XRF …
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GEOCHEMICAL ANALYSIS OF THE EAGLE FORD SHALE IN WEBB AND DIMMIT COUNTIES, TX
… source and reservoir. This study integrates chemostratigraphy, mineralogical analysis, and elemental ratio proxies to reconstruct depositional environments and assess controls on detrital influx, paleoproductivity, and redox conditions across multiple cores in Webb and Dimmit counties. Major, …
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Jurassic limestone-marl sequences in northern spain: detecting diagenetic signals using rare earth and trace elements
… thorium could be an ideal element for chemostratigraphy of Jurassic and Cretaceous deposits within the same paleogeographic setting as the Rodiles Formation.
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Marine carbonate accumulation during the greenhouse climate of the Eocene
… carbon isotope (δ13C) records in Cenozoic chemostratigraphy; it is crucial to deconvolute the isotope signal of marine bulk sediments. Pelagic carbonates are ensemble of different components of varying proportion and distinct isotope composition; hence spatial and temporal co-variation of …
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Terrestrial Impacts of the Central Atlantic Magmatic Province on western Pangea
… carbon cycle perturbation through carbon isotope chemostratigraphy of the Whitmore Point Member will be the best current age constraint. δ13Corganic and δ13Ccarbonate were analyzed in the lacustrine deposits of the Whitmore Point Member of the Moenave Formation to construct a carbon isotope …
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Biogeochemical Cycling and Paleoenvironmental Reconstructions of the Toarcian Oceanic Anoxic Event from Western North America
… successions. Specifically, I have studied the chemostratigraphy of the Fernie Formation of the Western Canada Sedimentary Basin (WCSB), which was deposited on the eastern margin of the Panthalassa Ocean. The Toarcian carbon isotope excursions (CIEs) in the WCSB confirm that these features are …
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Constraining the Ediacaran-Cambrian boundary in South China using acanthomorphic acritarchs and Palaeopascichnus fossils
… fossil (SSF) biostratigraphy and carbon isotope chemostratigraphy. Acanthomorphic acritarchs of the Asteridium-Heliosphaeridium-Comasphaeridium (AHC) assemblage zone have been identified at 11 localities in chert-phosphorite layers in the basal Cambrian Yanjiahe, Liuchapo, and Niutitang …
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Organic and inorganic geochemical characterization of the Juana Lopez and Montezuma Valley members of the lower Mancos Shale, Piceance Basin, Colorado
… and understanding of these units. Additionally, chemostratigraphy highlights lateral progression in terms of facies changes between the two units. The contact between the Frontier and the Juana Lopez has been interpreted to be a regional unconformity throughout the basin and a chemostratigraphic …
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The Impact of a Fruit and Vegetable Intervention on School Cafeteria Fruit and Vegetable Selection and Consumption in a Rural, Appalachian Mississippi Elementary School
Fruit and vegetable intake for children in the United States is low, which puts them at risk for poor health in the future. The National School Lunch Program meal pattern and nutrition standards for participating schools include increased fruits and vegetables, compared to previous standards. Using …
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