Results 11 to 20 of about 2,123 (183)

The pre‐Vendian (640–610 ma) granite magmatism in the Central Taimyr fold belt: the final stage of the Neoproterozoic evolution of the Siberian paleocontinent active margin

Геодинамика и тектонофизика, 2019
Eastern part of the Central Taimyr belt is composed of Precambrian rocks penetrated by granites of the Snezhnaya complex (845–825 million years) and later overlain by mid‐Neoproterozoic sin‐ postorogenic sedimentary deposits of the Stanovaya‐Kolosova ...
A. B. Kuzmichev, M. K. Danukalova, V. F. Proskurnin, A. A. Bagaeva, N. I. Beresyuk, P. A. Gromov   +5 more
doaj   +1 more source

Distribution of Cambrian Source Rock Controlled by the Inherited Paleotopography on the Precambrian Basement in the Tarim Basin, NW China

Frontiers in Earth Science, 2022
The Cambrian source rock is a key indicator that will guide future hydrocarbon explorations in ultra-deep strata. Despite its importance, the characteristics of paleotopography on the Precambrian basement and the distribution of source rocks above it ...
Haowei Yuan, Haowei Yuan, Shuping Chen, Shuping Chen, Kun Dai, Xiaochen Guo, Linghua Kong, Nana Feng, Huaibo Zhao, Huaibo Zhao, Weili Yang   +10 more
doaj   +1 more source

The Difunta Correa metasedimentary sequence (NW Argentina): relict of a Neoproterozoic platform? — elemental and Sr-Nd isotope evidence

Revista Mexicana de Ciencias Geológicas, 2018
The Sierra de Pie de Palo (Western Sierras Pampeanas, Argentina) in the Andean foreland is mainly formed by a Mesoproterozoic basement and an Ediacaran metasedimentary cover referred to as the Difunta Correa metasedimentary sequence.
Carlos Ramacciotti, César Casquet, Edgardo Baldo, Carmen Galindo   +3 more
doaj   +1 more source

TSM prototype basins on the Neoproterozoic Yangtze Craton

Shiyou shiyan dizhi, 2020
TSM basin analysis of Neoproterozoic prototype basins on Yangtze Craton, South China were studied using a large number of field outcrop sections, latest drilling data, and numerous previous studies.
Fengli YANG, Xiaofeng ZHOU, Yuyang HU, Ruiqing YANG, Yunxin PENG   +4 more
doaj   +1 more source

Sedimentology and stratigraphic correlation of Vendian deposits in the southwestern Siberian Craton: Major contribution of an exocratonic clastic source to sedimentary systems

Литосфера, 2018
The study focuses on the sedimentation and stratigraphy of a large Vendian (Ediacaran) sedimentary basin in the southwestern Siberian craton, with implications for the origin of its units and subunits.
Julius K. Sovetov
doaj   +1 more source

Perspective of gold-bearing deposits in the ferruginous-siliceous formations of Egypt and Kursk Magnetic Anomaly

RUDN Journal of Engineering Research, 2019
Banded ferruginous-siliceous formations (FSF) are confined to the Precambrian basement of the Arabian-Nubian Shield within the central part of the Eastern Desert of Egypt.
Hani E. Sharafeldin, Alexander A. Vercheba   +1 more
doaj   +1 more source

The geology of the Capiru Group, Curitiba Terrane, Southern Ribeira Belt (Brazil)

Journal of Maps, 2021
The Capiru Group is a Neoproterozoic metasedimentary unit that crops out in the Curitiba terrane, Southern Ribeira Belt, Brazil. A detailed geological mapping of this unit was performed during 2016 to 2020. Original interpretations and the new geological
Larissa da Rocha Santos, André Luis Spisila, Daniel Patias Guimarães, Luizemara Szameitat, Alessandra de Barros e Silva Bongiolo, Leonardo Fadel Cury   +5 more
doaj   +1 more source

A Neoproterozoic Transition in the Marine Nitrogen Cycle [PDF]

Current Biology, 2014
The Neoproterozoic (1000-542 million years ago, Mya) was characterized by profound global environmental and evolutionary changes, not least of which included a major rise in atmospheric oxygen concentrations [1, 2], extreme climatic fluctuations and global-scale glaciation [3], and the emergence of metazoan life in the oceans [4, 5].
Sanchez-Baracaldo, Patricia, Ridgwell, Andy J, Raven, John A.   +2 more
openaire   +3 more sources

Structural peculiarities and geodynamic evolution of Taimyr Peninsula in the Neoproterozoic

Литосфера, 2018
Structural relationships between the Neoproterozoic rock complexes of a continental massif, island arc with rear reef and back-arc basin geodynamic affinities are described and considered in this work based on field observations within the northeastern ...
Sergei G. Samygin
doaj   +1 more source

Neoproterozoic copper cycling, and the rise of metazoans [PDF]

Scientific Reports, 2019
AbstractThe rise of animal life is temporally related to the increased availability of oxygen in the hydrosphere and atmosphere during the Neoproterozoic. However, the earliest metazoans probably needed relatively low oxygen concentrations, suggesting additional environmental and/or biochemical developments were involved.
Parnell, J., Boyce, A.J.
openaire   +4 more sources