Results 71 to 80 of about 8,093,557 (158)

The late Silurian Xiaoxiang Vertebrate Fauna in South China inhabited a tropical nearshore marine environment

Frontiers in Ecology and Evolution
The late Silurian Xiaoxiang Vertebrate Fauna, represented by the gnathostome placoderms Entelognathus and Qilinyu, as well as the osteichthyans Guiyu and Megamastax, is mainly hosted in the Ludlow Kuanti Formation in the Qujing area, East Yunnan, South ...
Jia-Chen Cai, Jia-Chen Cai, Hao-Ran Sun, Hao-Ran Sun, Wen-Jin Zhao, Wen-Jin Zhao, Min Zhu, Min Zhu   +7 more
doaj   +1 more source

Ferruginous Conditions: A Dominant Feature of the Ocean through Earth's History

, 2011
The reconstruction of oceanic paleoredox conditions on Earth is essential for investigating links between biospheric oxygenation and major periods of biological innovation and extinction, and for unravelling feedback mechanisms associated with ...
Poulton, Simon W., D. E. Canfield, Canfield, Donald Eugene; id_orcid, S. W. Poulton   +3 more
core   +1 more source

Investigation of paleoredox conditions of Dodurga (Çorum) Basin’s

, 2016
Çalışma alanı Çorum’un Dodurga ilçesine bağlı olup organik maddece zengin kayaçların depolanma ortamı redoks koşullarının belirlenmesi amaçlanmıştır.
Akkaya, Pelin
core  

Paleoenvironmental Influences Evaluation on Sedimentary Organic Matter of the Kampungbaru Formation, Lower Kutai Basin: Organic and Inorganic Geochemical Approaches

JGEET: Journal of Geoscience, Engineering, Environment and Technology
The study of paleoenvironmental influences on sedimentary organic matter has become a critical field of research, particularly in understanding the depositional conditions that control the accumulation and preservation of organic matter. In present study,
Jamaluddin, Siti Nur Fathiyah Jamaludin, Muhammad Altin Massinai, Shiqi Zhang, Hafzan Eva Mansor, Agus Wiramsya Oscar   +5 more
doaj   +1 more source

Paleoredox chemistry of Cenomanian–Coniacian black shales at high paleolatitudes: Implications for the extent of anoxia during OAE2 [PDF]

, 2013
Cretaceous oceanic anoxic events (OAEs) have been studied in detail during the last decades. OAE2 is of particular interest as it reflects one of the largest perturbations of the global carbon cycle in the Mesozoic.
Hills, Len V, Lenniger, Marc, Bjerrum, Christian J., Nøhr-Hansen, Henrik   +3 more
core   +1 more source

Application of Molybdenum and Thallium Isotopes as Indicators of Paleoredox Conditions and Genesis of Hyper-Enriched Black Shale (HEBS) Deposits, Peel River, Yukon [PDF]

, 2019
Hyper-enriched black shale (HEBS) deposits, such as those hosted in Devonian black shales of northern Yukon, are a globally significant source of a variety of economically important metals, particularly nickel, copper, zinc and platinum group elements ...
Crawford, Isobel
core  

Possible sources of REE, Paleo-redox conditions, and diagenetic history of Paleocene limestone from Ewekoro formation, Eastern Dahomey Basin, Southwestern Nigeria

Discover Geoscience
Limestone from the Ewekoro Formation in the Dahomey Basin was studied for its elemental and stable isotope (carbon and oxygen) composition. This is aimed at determining their diagenetic, depositional environments, source of REE, detrital influx, and its ...
R. G. Oladimeji, S. O. Idakwo, M. A. Adeleye, A. Musa   +3 more
doaj   +1 more source

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

Brazilian Journal of Geology
: 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, Munir Humayun
doaj   +1 more source

Estratigrafía, sedimentología y geoquímica de las formaciones Chapiza y Hollín en la Zona Subandina : Estratigrafía, sedimentología y geoquímica de la Formación Hollín en la Zona Subandina Subandina.

, 2022
Este trabajo se basó en el uso de herramientas geoquímicas como la quimioestratigrafía y diagramas geoquímicos discriminatorios (litogeoquímica), con las siguientes aplicaciones: clasificación litológica, proveniencia, composición de sedimentos ...
Maya Ortiz, Daniel Sebastián
core  

Geochemistry of the Dalmiapuram Formation of the Uttatur Group (Early Cretaceous), Cauvery basin, southeastern India: Implications on provenance and paleo-redox conditions

Revista Mexicana de Ciencias Geológicas, 2014
Se llevaron a cabo estudios geoquímicos de elementos mayores, traza y tierras raras (ETR) en la Formación Dalmiapuram del Cretácico Inferior en el sureste de la India, para entender las variaciones geoquímicas entre diversas unidades litológicas.
Jayagopal Madhavaraju, Yong Il Lee
doaj