Results 31 to 40 of about 16,157 (210)
Modeling pN2 through Geological Time: Implications for Planetary Climates and Atmospheric Biosignatures [PDF]
, 2016 Nitrogen is a major nutrient for all life on Earth and could plausibly play a similar role in extraterrestrial biospheres. The major reservoir of nitrogen at Earth's surface is atmospheric N2, but recent studies have proposed that the size of this ...
Buick, R. +5 more
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BRYANSK-KURSK-VORONEZH INTRA-CONTINENTAL COLLISIONAL OROGEN (EAST EUROPEAN CRATON)
Геодинамика и тектонофизика, 2015 The article presents new data on the deep crustal structure, origin and evolution of the Bryansk-Kursk-Voronezh orogen in the south-eastern segment of the East European craton; it is composed of the Paleoproterozoic formations and areas of reworked ...
M. V. Mints, W. A. Bush, S. N. Ageev
doaj +1 more source
Геодинамика и тектонофизика, 2020 A critical discussion of competing models of the geodynamic nature (oceanic or continental subduction) and age (Meso-Neoarchean or Late Paleoproterozoic) of the eclogite facies metamorphism in the Belomorian eclogite province (BEP) is based on the ...
M. V. Mints, K. A. Dokukina
doaj +1 more source
Analysis of a Precambrian resonance-stabilized day length [PDF]
, 2016 During the Precambrian era, Earth's decelerating rotation would have passed a 21-hour period that would have been resonant with the semidiurnal atmospheric thermal tide.
Bartlett, Benjamin C. +1 more
core +3 more sources
FAULT SYSTEMS IN THE UPPER CRUST OF THE FENNOSCANDIAN SHIELD, THE EAST EUROPEAN PLATFORM
Геодинамика и тектонофизика, 2020 Directions of 683 faults located in the southeastern part of the Fennoscandian (Baltic) shield were statistically analyzed, and three orthogonal associations of fault systems were identified in the study area.
V. S. Burtman, S. Yu. Kolodyazhny
doaj +1 more source
The formation of Laurentia : Evidence from shear wave splitting [PDF]
, 2017 The authors would like to thank A. Walker for invaluable help understanding the MSAT forward modelling code, as well as A. Boyce, L. Petrescu, and C.
Bastow, Ian +4 more
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Paleoproterozoic molassoid complexes of SW Chana
Moscow University Bulletin. Series 4. Geology, 2016 Based on a study of modern-day published evidences and own data the lithology, conditions of sedimentations, tectonic evolution and mineralization of molassoid complexes of SW Ghana which filled Tarkwa and Bui basins within the Birrimian paleoproterozoic orogenic belt are considered.
N. A. Bozhko +2 more
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Paleoproterozoic sterol biosynthesis and the rise of oxygen [PDF]
Nature, 2017 Natural products preserved in the geological record can function as 'molecular fossils', providing insight into organisms and physiologies that existed in the deep past. One important group of molecular fossils is the steroidal hydrocarbons (steranes), which are the diagenetic remains of sterol lipids.
Gold, David +3 more
openaire +4 more sources
, 2014 This research was funded through Natural Environment Research Council (grant NE/J021822/1) and the APC was paid through the RCUK OA block grant.Earth's middle age, extending from 1.7 to 0.75 Ga, was characterized by environmental, evolutionary, and ...
Cawood, Peter Anthony +1 more
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Major tectonic units of the North China Craton and their Paleoproterozoic assembly [PDF]
, 2003 The basement of the North China Craton can be divided into the Eastern and Western Blocks and the Central Zone (Trans-North China Orogen). The West Block formed by the amalgamation of the Ordos Block in the south and the Yinshan Block in the north 1.9-2 ...
Sun, M, Wilde, SA, Zhao, G
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