Results 1 to 10 of about 6,981 (220)

Changes in orogenic style and surface environment recorded in Paleoproterozoic foreland successions [PDF]

open access: yesNature Communications, 2023
The Earth’s interior and surficial systems underwent dramatic changes during the Paleoproterozoic, but the interaction between them remains poorly understood. Rocks deposited in orogenic foreland basins retain a record of the near surface to deep crustal
Bo Huang   +7 more
doaj   +3 more sources

Long-lived Paleoproterozoic eclogitic lower crust [PDF]

open access: yesNature Communications, 2021
The nature of the lower crust and the crust-mantle transition is fundamental to Earth sciences. Transformation of lower crustal rocks into eclogite facies is usually expected to result in lower crustal delamination.
Malinowski, Michal   +23 more
core   +6 more sources

Field Workshop - The Paleoproterozoic record of the São Francisco Craton Paleocontinent and Late Paleoproterozoic to Neoproterozoic covers Field

open access: yes, 2019
The field workshop on the Paleoproterozoic record of the São Francisco craton (SFC) has been designed to provide a view on the aspects of the Paleoproterozoic ...
Oliveira, Elson Paiva   +4 more
core   +3 more sources

An early Paleoproterozoic high-K intrusive complex in southwestern Tarim Block, NW China: Age, geochemistry, and tectonic implications

open access: yesGondwana Research, 2007
Systematic geochronologic, geochemical, and Nd isotopic analyses were carried out for an early Paleoproterozoic high-K intrusive complex exposed in southwestern Tarim, NW China.
Chuan-Lin Zhang   +2 more
exaly   +2 more sources

Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The occurrence of plate tectonic processes on Earth during the Paleoproterozoic is supported by ca. 2.2–1.8 Ga subduction‐collision orogens associated with the assembly of the Columbia‐Nuna supercontinent. Subsequent supercontinent breakup is evidence by
Chen Wu   +5 more
doaj   +2 more sources

The Great Oxidation Event preceded a Paleoproterozoic "snowball Earth" [PDF]

open access: yesProceedings of the National Academy of Sciences, 2020
This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 678812 to M.C.)The inability to resolve the exact temporalrelationship between two ...
Zerkle, Aubrey Lea   +22 more
core   +8 more sources

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+5 more sources

A Rare Glimpse of Paleoproterozoic Sub‐Arc Mantle: The Ussuit Peridotite, West Greenland

open access: yesGeochemistry, Geophysics, Geosystems
Mantle residues beneath Archean cratonic nuclei have been extensively studied, whereas less attention has been given to the mantle lithosphere beneath Proterozoic mobile belts that link these nuclei.
T. McIntyre   +6 more
doaj   +2 more sources

SEM-based automated mineralogy (SEM-AM) and unsupervised machine learning studying the textural setting and elemental association of gold in the Rajapalot Au-Co area, northern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2021
SEM-based automated mineralogy (SEM-AM) techniques allow fast and effective way of studying the textural settings of gold in hydrothermal deposits. Unsupervised machine learning (e.g.
Jukka-Pekka Ranta   +2 more
doaj   +1 more source

Hiekkapohja hydrothermal system – ore mineral, lithogeochemical and paleomagnetic evidence from the Paleoproterozoic Central Finland Granitoid Complex [PDF]

open access: yesBulletin of the Geological Society of Finland, 2023
The Paleoproterozoic Svecofennian Central Finland Granitoid Complex (CFGC) has been regarded as an area of low mineralisation potential. The Hiekkapohja area, 20km north-east of the town of Jyväskylä, host a concentration of variable metalliferous ...
Esa Heilimo   +4 more
doaj   +1 more source

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