Results 221 to 230 of about 34,869 (280)

A diverse Palaeoproterozoic microbial ecosystem implies early eukaryogenesis. [PDF]

Philos Trans R Soc Lond B Biol Sci
Javaux EJ.
europepmc   +1 more source

The Neoproterozoic Mozambique Belt in the Gol Mountains (N Tanzania): Structural Analysis of Amphibolite and Granulite‐Facies Nappe Tectonites From a Crustal Orogenic Channel

Luis Eguíluz Alarcón, P. Puelles, Antonio Tarriño Vinagre, B. Ábalos   +3 more
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Classification of compaction degree in shallowly buried extremely thick gravel layers and analysis of geological influencing factors. [PDF]

Sci Rep
Zhang Y, Feng R, Hu C, Li Y, Wu X, Wang Z.   +5 more
europepmc   +1 more source

Utilizing remote sensing and field data for geological mapping and polyphase deformation analysis of Um Laseifa ophiolites, Eastern Desert, Egypt. [PDF]

Sci Rep
Alawy MK, Abdelwahed M, Moghazi AM, Mohamed FH, Khamis H, Shebl A.   +5 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

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

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
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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

Rare earth element geochemistry of Australian Neoproterozoic carbonate: Constraints on the Neoproterozoic oxygenation events

Precambrian Research, 2019
Carbonate successions are principal geochemical archives of the extraordinary environmental changes that occurred during the Neoproterozoic Era. In this study, we present a stratigraphic record of carbonate rare earth element (REE) compositions from Neoproterozoic and Cambrian strata in central and southern Australia.
Jack F Ward, Charles Verdel, Matthew J Campbell   +2 more
exaly   +4 more sources

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