CARPATHIAN-BLACK SEA CONTINENTAL MARGIN OF TETHYS. OCEANIC ANOXIC EVENTS
نویسندگان
چکیده
منابع مشابه
Oceanic oxygenation events in the anoxic Ediacaran ocean.
The ocean-atmosphere system is typically envisioned to have gone through a unidirectional oxygenation with significant oxygen increases in the earliest (ca. 635 Ma), middle (ca. 580 Ma), or late (ca. 560 Ma) Ediacaran Period. However, temporally discontinuous geochemical data and the patchy metazoan fossil record have been inadequate to chart the details of Ediacaran ocean oxygenation, raising ...
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a State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China b Department of Earth Sciences, Nanjing University, Nanjing 210093, China c Department of Geodynamics and Sedimentology, University of Vienna, A-1090 Vienna, Austria d University of Tulsa, 149 West Ridge Road, Cleveland, OK 74020, USA e Department of Geological Sciences, ...
متن کاملA continental-weathering control on orbitally driven redox-nutrient cycling during Cretaceous Oceanic Anoxic Event 2
The Cretaceous period (~145–65 m.y. ago) was characterized by intervals of enhanced organic carbon burial associated with increased primary production under greenhouse conditions. The global consequences of these perturbations, oceanic anoxic events (OAEs), lasted up to 1 m.y., but short-term nutrient and climatic controls on widespread anoxia are poorly understood. Here, we present a high-reso...
متن کاملKey role of continental margin sediments in the oceanic mass balance of Zn and Zn isotopes
Zinc is an essential micronutrient and its concentration and isotopic composition in marine sediments represent promising tracers of the ocean carbon cycle. However, gaps remain in our understanding of the modern marine cycle of Zn, including an explanation of the heavy Zn isotopic composition of seawater relative to the known inputs, and the identity of a required missing sink for light Zn iso...
متن کاملMid-Cretaceous carbon cycle perturbations and Oceanic Anoxic Events recorded in southern Tibet
The organic carbon isotope (δ13Corg) curve for ~1.7-km-thick mid-Cretaceous strata of the Chaqiela section in Gamba area, southern Tibet is presented in this study. C-isotopic chemostratigraphic correlation combined with biostratigraphic constraints show that the Chaqiela section spans early Aptian through early Campanian period, and that almost all of the carbon cycle perturbations and Oceanic...
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ژورنال
عنوان ژورنال: Collection of Scientific Works of the Institute of Geological Sciences of the NAS of Ukraine
سال: 2008
ISSN: 2522-9761,2522-9753
DOI: 10.30836/igs.2522-9753.2008.152363