Results 71 to 80 of about 8,820 (215)
Geochemistry, Geophysics, Geosystems, 2021 The distribution of rheologically strong cratons, and their weakening by metamorphic hydration reactions, is of fundamental importance for understanding first‐order strength contrasts within the crust and the resulting controls on the tectonic evolution ...
A. J. Whyte +3 more
doaj +1 more source
Tectonics, Volume 45, Issue 9, September 2026.Abstract The Fennoscandian Shield potentially hosts the longest continuous habitable conditions for Earth's deep biosphere. Billion‐year equilibrium freeboard conditions of cratons and the longevity of deep biosphere microbial communities are directly related through the thermal histories of rocks that host these communities.
Josh Isaacs +4 more
wiley +1 more source
, 2016 This paper reviews the sedimentological, geochemical and stratigraphic characteristics of the Paleoproterozoic Chaibasa and Dhalbhum Formations (the Singhbhum Group) of eastern India and presents a comparative study with other Paleoproterozoic ...
Mallik, L. +6 more
core +2 more sources
Geosciences, 2020 Quartzites and paragneisses of the Archean granulite series of the Anabar Shield (Siberian Craton, Russia) are described geochemically. The Sm-Nd isotope systematics of the rocks and the U-Pb age (SHRIMP II) and geochemistry of zircons from quartzites ...
Nikolay I. Gusev +2 more
doaj +1 more source
Basin Research, Volume 38, Issue 5, September‐October 2026.Integrated detrital zircon U–Pb, Nd–Sr isotopes and thermochronology record western Indian‐margin provenance reorganisation. Late Cretaceous–Palaeocene sediment supply was Indian‐affinity; Asian‐affinity input appeared across the Palaeocene–Eocene transition (~56.5–54.7 Ma), suggesting India–Asia collision was underway, while mixed provenance persisted
Nowrad Ali +8 more
wiley +1 more source
Paleoproterozoic geology of the Toumodi area, Ivory Coast, 1:100,000
, 2018 Field geological mapping of tropical West Africa is hampered by the variable development of deep regolith and tropical rainforest and this has impeded the progress of geological research.
J. Mortimer (3113262)
core +1 more source
Re-Os age of molybdenite from the Hannivka deposit, Kryvyi Rih structure, Ukrainian Shield
Мінеральні ресурси УкраїниThis article presents the results of isotopic dating of molybdenite using the Re–Os method to determine the age of mineralization at the Hannivka deposit.
Yu. Ye. Khomych +6 more
doaj +1 more source
Red to Green: A Lipid Biomarker Record of Tonian‐Ediacaran Algae in Siberia
Geobiology, Volume 24, Issue 5, September/October 2026.ABSTRACT Multiple lines of evidence point to a major diversification of Eukarya in the late Tonian period, ca. 800–720 Ma ago. Regular steranes, lipid biomarkers primarily sourced from eukaryotes, are first unambiguously reported from multiple sites. Here, we present lipid biomarker stratigraphic records from two drill‐cores from the Lena‐Anabar Basin ...
Adriana I. Rizzo +7 more
wiley +1 more source
Ocean chemistry in the Paleoproterozoic
, 2019 The present-day oxidizing conditions at Earth's surface are due to the high oxygen content of the atmosphere. However, oxygen was not always stable in the terrestrial atmosphere. Two distinct periods during which oxygen increased in a step-like manner were required to reach the current atmospheric oxygen level.
openaire +2 more sources
, 2015 1.8 similar to 1.6Ga is a period when the planet Earth witnessed a critical revolution in global tectonic configuration, paleogeographic environment and biological evolution.
Zhai MingGuo +5 more
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