Results 91 to 100 of about 2,385 (155)
Albian to Turonian Chemostratigraphy of the Eastern Arabian Plate
Proceedings, 2010 A chemostratigraphic curve has been established for the Middle Cretaceous Albian to Turonian argillaceous/carbonate sequences of the eastern Arabian Plate. The curve consists of more than 550 δ13C values from outcrop and subsurface data. It is anchored by biostratigraphy and compares favorable with the character of well dated and published curves from ...
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Chemostratigraphy of the Lower Cretaceous Basal Quartz in Southern Alberta
, 2002 The Lower Cretaceous Basal Quartz (BQ) of the Western Canadian Sedimentary Basin (WCSB) is the basal part of the Lower Mannville Formation, which, together with the overlying Upper Mannville, is considered one of the most prolific hydrocarbon- bearing ...
K.T. Radcliffe +3 more
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, 2019 The Katian (Upper Ordovician) Shiyanhe Formation at the Sigang section, Neixiang area, Henan Province, central China, has been investigated for carbon isotope (? 13 C carb ) chemostratigraphy.
Jing, Xiuchun +4 more
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Strata of the Cincinnati area are among the most well-preserved and exposed Upper Ordovician rocks in the world. Determining the precise temporal alignment of these extensive palaeobiological and palaeoenvironmental records with those in other basins ...
Patrick I. McLaughlin +6 more
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Proceedings of the Nigerian Society of Physical SciencesModern investigations into spectral gamma-ray (SGR) records enhance understanding of sedimentary environments and paleoenvironmental conditions. This study examines a 111 m sand and shale interval in the Tak-1 well, Niger Delta Basin, to characterize ...
Oluwakemi Efemena, Franklin Lucas
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Large igneous provinces played a major role in oceanic oxygenation events during the mid-Proterozoic
Communications Earth & EnvironmentLow atmospheric oxygen levels during the mid-Proterozoic were occasionally interrupted by transient high oxygen levels. The cause of mid-Proterozoic ocean redox variability remains unclear.
Anbo Luo +3 more
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Correlation of Bioturbated Facies, Chemostratigraphy, Total Organic Carbon, and Sequence Stratigraphy in the Woodford Shale of South Central Oklahoma [PDF]
, 2016 Bioturbation creates a physical change in the primary rock structure and mineralogy. It is evidence of past life in the sediments and can assist in determining the depositional environment.
Maynard, Sabrina
core
Chemostratigraphy of the uppermost Cambrian at the Ordovician GSSP [PDF]
, 2018 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 ...
Wang, Lisha
core
Chemostratigraphy of the Uppermost Cambrian Below the Ordovician GSSP [PDF]
, 2018 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 ...
Wang, Lisha
core
Chemostratigraphy Across the Triassic–Jurassic Boundary
, 2019 The Triassic‐Jurassic transition (~201.5 Ma) is marked by one of the largest mass extinctions in Earth’s history. This was accompanied by significant perturbations in ocean and atmosphere geochemistry, including the global carbon cycle, as expressed by major fluctuations in carbon isotope ratios.
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