Results 11 to 20 of about 3,256 (202)
Geophysical 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 +4 more sources
Mesoproterozoic plume‐modified orogenesis in eastern Precambrian Australia [PDF]
Tectonics, 2009 Tectonic models for the latest Paleoproterozoic to earliest Mesoproterozoic evolution of eastern Australia (circa 1620–1500 Ma) are diverse and either emphasize plume or plate margin activity, neither of which satisfactorily explains all geological observations.
Peter Betts +9 more
openalex +5 more sources
A Mesoproterozoic iron formation [PDF]
Proceedings of the National Academy of Sciences, 2018 Significance Iron formations (IFs) are common before 1,800 million years ago (Ma) and again at ∼750 Ma, but are remarkably absent for the billion years in between. We report on a 1,400-Ma IF of ∼520 gigatons Fe from the Xiamaling Formation on the North China Craton.
Donald E. Canfield +8 more
openaire +5 more sources
A hot origin of dissimilatory sulfite reduction catalyzed by DsrAB in the Paleoarchean Era. [PDF]
mLifeAbstract Dissimilatory sulfite reduction (DSR) has been essential to microbial energy metabolism in the biogeochemical sulfur cycle since the Paleoarchean Era. However, due to the lack of an integrated assessment of geological record and genomic data, the evolutionary origin of DSR remains elusive in terms of time, habitat, and genetic basis.
Tang L +10 more
europepmc +2 more sources
Anoxia in the terrestrial environment during the late Mesoproterozoic [PDF]
Geology, 2013 A significant body of evidence suggests that the marine environment remained largely anoxic throughout most of the Precambrian. In contrast, the oxygenation history of terrestrial aquatic environments has received little attention, despite the significance of such settings for early eukaryote evolution.
Vivien M. Cumming +3 more
openalex +5 more sources
Dizhi lixue xuebao, 2022 Due to the complicated tectonic and sedimentary history and the lack of effective paleo-thermal indicators, the Meso-Neoproterozoic thermal history of the Yanliao rift zone in the northern margin of the North China Craton is ambiguous, which causes the ...
LI Chenxing +4 more
doaj +1 more source
Active Microbial Sulfur Disproportionation in the Mesoproterozoic [PDF]
Science, 2005 The environmental expression of sulfur compound disproportionation has been placed between 640 and 1050 million years ago (Ma) and linked to increases in atmospheric oxygen. These arguments have their basis in temporal changes in the magnitude of 34 S/ 32 S fractionations between sulfate and ...
Johnston, David Thomas +7 more
openaire +3 more sources
Energy Exploration & Exploitation, 2020 Oil reservoirs have been discovered in the Mesoproterozoic strata in the Liaoxi Depression, NE China. In order to determine the source of oil shows of the Mesoproterozoic Gaoyuzhuang Formation and their organic geochemical characteristics, eight source ...
Youjun Tang +9 more
doaj +1 more source
Dizhi lixue xuebao, 2021 We report new geochronological data of the mafic gneiss and leucogneiss from the Windmill Islands, East Antarctica, in order to unravel the tectonothermal events related to the amalgamation of Rodinia. SHRIMP zircon U-Pb dating from the mafic gneiss (Hbl-
WANG Yanbin +5 more
doaj +1 more source
Mesoproterozoic Anorthosite Bloom
, 2022 Accompanying data and scripts for "Earth's anomalous middle-age magmatism driven by plate slowdownEarth's anomalous middle-age magmatism driven by plate slowdown", in submission, 2021.
O'Neill, Craig, Brown, Schaefer, , Gazi
openaire +1 more source