Results 91 to 100 of about 928 (188)

Geochemical paleoredox indicators in organic-rich shales of the Irati Formation, Permian of the Paraná Basin, southern Brazil

, 2016
: Paleoredox indicators were used to assess the depositional environment of the Permian Irati Formation, and discuss the controls on the accumulation of organic-rich sediments.
Karin Goldberg (5737310), Munir Humayun (6120854)   +1 more
core   +1 more source

Characteristics of paleoenvironment of Paleogene Wenchang Formation in Lufeng 15 Sub-sag, Pearl River Mouth Basin and its controlling effect on source rocks

Frontiers in Earth Science
The Pearl River Mouth Basin is a major hydrocarbon province offshore China, where the lacustrine mudstones of the Paleogene Wenchang Formation serve as the main hydrocarbon source rock.
Yangdi Zheng, Yangdi Zheng, Zhangbo Xiao, Zhangbo Xiao, Hongbo Li, Hongbo Li, Yu Sun, Yu Sun, Xingye Yang, Xingye Yang   +9 more
doaj   +1 more source

Biological diversification linked to environmental stabilization following the Sturtian Snowball glaciation. [PDF]

Sci Adv, 2023
Bowyer FT, Krause AJ, Song Y, Huang KJ, Fu Y, Shen B, Li J, Zhu XK, Kipp MA, van Maldegem LM, Brocks JJ, Shields GA, Le Hir G, Mills BJW, Poulton SW.   +14 more
europepmc   +1 more source

Paleoenvironment, Paleoredox and Paleogeography of Mamu Shale Anambra Basin Southern Nigeria

The Shales in Okada and Usen within Mamu Formation, Anambra Basin were evaluated for Paleogeography, Paleoenvironment and Paleoredox conditions by examining the foraminifera, polymorph assemblages and the trace elements concentration accordingly. the application of trace element composition ratios: V/Cr, V/Ni, U/Th, Ni/Co, V/(Ni+V)2, V/(Sc)3 with the ...
Andaye, B. E., Afolabi, O. O., Adamu, A. A,, Ilevbare, M.   +3 more
openaire   +1 more source

Geochemistry of Neoproterozoic shales of the Rabanpalli Formation, Bhima Basin, Northern Karnataka, southern India: implications for provenance and paleoredox conditions

Revista Mexicana de Ciencias Geológicas, 2018
The Rabanpalli Formation exhibits two types of shales, viz. grey and calcareous shales. These shales (grey and calcareous) have been analysed for major, trace, and rare earth elements to find out their source rocks characteristics and paleo-oxygenation ...
Ramasamy Nagarajan, Jayagopal Madhavaraju, Raghavendra Nagendra, John Selvamony Armstrong-Altrin, Jacques Moutte   +4 more
doaj  

Paleoredox Geochemistry and Bioturbation Levels of the Exceptionally Preserved Early Cambrian Indian Springs Biota, Poleta Formation, Nevada, USA

, 2015
The early Cambrian Indian Springs biota, western Nevada, USA exhibits Burgess Shale-type (BST) preservation of a diverse array of animal phyla, including the earliest definitive echinoderms. It therefore provides an important window on animal life during
Novek, Jonah Meron
core  

The paleoredox context of early eukaryotic evolution: insights from the Tonian Mackenzie Mountains Supergroup, Canada

Tonian (ca. 1000-720 Ma) marine environments are hypothesised to have experienced major redox changes coinciding with the evolution and diversification of multicellular eukaryotes.
Bui, TH, Maloney, KM, Halverson, GP, Lechte, M, Gibson, TM, Schiffbauer, JD, Laflamme, M   +6 more
core   +1 more source

Integrated Geochemistry and Sedimentology of the Wolfcamp B3 and B2 Intervals, Midland Basin, TX [PDF]

, 2019
The Permian-aged, hydrocarbon-rich, mixed carbonate-siliciclastic mudrocks of Midland Basin Wolfcamp B2 and B3 are highly heterogeneous, making paleoenvironmental reconstruction difficult.
Lopez-Gamundi, Cecilia
core  

Rapid marine oxygen variability: Driver of the Late Ordovician mass extinction. [PDF]

Sci Adv, 2022
Kozik NP, Young SA, Newby SM, Liu M, Chen D, Hammarlund EU, Bond DPG, Them TR, Owens JD.   +8 more
europepmc   +1 more source

Paleoredox Conditions, Paleoproductivity, and Depositional Environment of an Eocene Black Shale: Mahogany Zone, Green River Formation, Eastern Uinta Basin, Utah

, 2019
honors thesisCollege of Mines & Earth SciencesGeology & GeophysicsLauren BirgenheierBlack shales are commonly assumed to record anoxic, organically productive paleoenvironments.
Worms, Katherine
core