Results 121 to 130 of about 2,007 (165)

Modeling of the Arabian/Nubian shield's geothermal structure: a multi-parametric analysis using geophysical and geological tools. [PDF]

Sci Rep
Haggag M, Sobh M, Hassan S, Hegab MAE, Shebl A, Ghazala HH.   +5 more
europepmc   +1 more source

Impact-induced initiation of Snowball Earth: A model study. [PDF]

Sci Adv
Fu M, Abbot DS, Koeberl C, Fedorov A.
europepmc   +1 more source

Advent of three-dimensional sediment exploration reveals Ediacaran-Cambrian ecosystem transition. [PDF]

Sci Adv
Chen Z, Liu Y.
europepmc   +1 more source

Petrographic and geochemical study of Precambrian and Paleozoic rocks in the western Anti-Atlas belt, Morocco: Facies, weathering, provenance and economic exploitation. [PDF]

Heliyon
Sebbab MM, Ousbih M, En-Nasiry M, El Ouahidi A, Abdelrahman K, El Atillah A, Uddin MG, Ekoa Bessa AZ, Fnais MS, Olbert AI, Abioui M.   +10 more
europepmc   +1 more source

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Neoproterozoic of Laurentia

2023
ABSTRACT Neoproterozoic to Cambrian isolation of Laurentia during the breakup of Rodinia was associated with multiple large igneous provinces, protracted multiphase rifting, and variable subsidence histories along different margin segments. In this contribution, we develop a paleogeographic model for the Neoproterozoic tectonic evolution
Francis A. Macdonald, W. Adolph Yonkee, Rebecca M. Flowers, Nicholas L. Swanson-Hysell   +3 more
openaire   +1 more source

Neoproterozoic chemostratigraphy

Precambrian Research, 2010
Chemostratigraphy has diverse applications to investigating the rock record, such as reconstructing paleoenvironments, determining the tectonic setting of sedimentary basins, indirect dating, and establishing regional or global correlations. Chemostratigraphy is thus an integral component of many investigations of the ancient sedimentary record.
Halverson, G., Wade, B., Hurtgen, M., Hatch, K.   +3 more
openaire   +2 more sources

A Neoproterozoic Snowball Earth

Science, 1998
Negative carbon isotope anomalies in carbonate rocks bracketing Neoproterozoic glacial deposits in Namibia, combined with estimates of thermal subsidence history, suggest that biological productivity in the surface ocean collapsed for millions of years.
, Hoffman, , Kaufman, , Halverson, , Schrag   +3 more
openaire   +2 more sources

Climate of the Neoproterozoic

Annual Review of Earth and Planetary Sciences, 2011
The Neoproterozoic is a time of transition between the ancient microbial world and the Phanerozoic, marked by a resumption of extreme carbon isotope fluctuations and glaciation after a billion-year absence. The carbon cycle disruptions are probably accompanied by changes in the stock of oxidants and connect to glaciations via changes in the ...
Pierrehumbert, R., Abbott, D., Voigt, A., Koll, D.   +3 more
openaire   +2 more sources

Oldest-known Neoproterozoic carbon isotope excursion: Earlier onset of Neoproterozoic carbon cycle volatility

Gondwana Research, 2021
Abstract The Neoproterozoic Era (1000–541 Ma) is characterized by the largest negative carbon isotope excursions in Earth history. Younger Neoproterozoic excursions are well-documented on multiple continental margins and associated with major events including snowball Earth glaciations, ocean-atmosphere oxygenation, and the evolution of animal ...
Zhiyue Zhang, Peng Peng, Lianjun Feng, Zheng Gong, Ross N. Mitchell, Youlian Li   +5 more
openaire   +1 more source

Learning to tell Neoproterozoic time

Precambrian Research, 2000
In 1989, the International Commission on Stratigraphy established a Working Group on the Terminal Proterozoic Period. Nine years of intensive, multidisciplinary research by scientists from some two dozen countries have markedly improved the framework for the correlation and calibration of latest Proterozoic events.
openaire   +2 more sources