Results 11 to 20 of about 8,820 (215)

The paleoproterozoic record of the São Francisco craton paleocontinent and late paleoproterozoic to neoproterozoic covers

, 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 geology.
Teixeira, Wilson, Chemale Jr, Farid, Oliveira, Elson Paiva   +2 more
core   +3 more sources

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

Geochemistry, 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, Guosheng Wang, Zhiguang Zhou, Peter J. Haproff, Andrew V. Zuza, Wenyou Liu   +5 more
doaj   +2 more sources

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

Proceedings of the National Academy of Sciences, 2020
The inability to resolve the exact temporal relationship between two pivotal events in Earth history, the Paleoproterozoic Great Oxidation Event (GOE) and the first “snowball Earth” global glaciation, has precluded assessing causality between changing atmospheric composition and ancient climate change.
Warke, Matthew R., Di Rocco, Tommaso, Zerkle, Aubrey L., Lepland, Aivo, Prave, Anthony R., Martin, Adam P., Ueno, Yuichiro, Condon, Daniel J., Claire, Mark W.   +8 more
openaire   +8 more sources

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

Geochemistry, 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, P. Waterton, L. Li, B. Gong, X. Zha, K. Szilas, D. G. Pearson   +6 more
doaj   +2 more sources

Archean and Paleoproterozoic cratonic rocks of Baffin Island [PDF]

, 2020
Archean and Paleoproterozoic cratonic rocks of Baffin Island define four stacked structural levels that are juxtaposed within the middle Paleoproterozoic Trans-Hudson Orogen.

core   +2 more sources

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, Caron, Abigail, Fournier, Gregory P., Summons, Roger E   +3 more
openaire   +4 more sources

CARBONATES OF ORE DEPOSITS OF PRECAMBRIAN OF THE CENTRAL PART OF THE UKRAINIAN SHIELD

Геохімія техногенезу, 2020
The article presents the results of study of the isotopic composition of oxygen and carbon of carbonates in ore deposits of the Early Pre-cambrian of the Ukrainian Shield. The following objects were studied: 1. Iron ore formations of the Kryvyi Rih ultra-
Fomin Yu., Demikhov Yu., Verkhovtsev V., Borisova N., Chuprinova S.   +4 more
doaj   +1 more source

Petrogenesis and tectonic significance of the Mengjiaping beschtauite in the southern Taihang mountains

Open Geosciences, 2021
The evolution process of the North China Craton has been discussed by many scholars; however, the frame for the timing of the Trans-North China Block has not been fully agreed upon.
Tian Haofei, Li Ganyu, Choi Jinyong, Luan Wenlou, Cui Xingtao, Wang Shen, Jin Mengqi, Chen Haotian, Chen Wenjing, Liang Xian, Zou Chengjie, Zhao Liang, Han Sinan, Zou Peijie, Hu Xiaofei   +14 more
doaj   +1 more source

Detrital record of mountain building : Provenance of Jurassic foreland basin to the Dabie Mountains [PDF]

, 2010
The Huangshi foreland basin developed on the southern margin of the Dabie Mountains as a result of tectonic loading during Triassic collisional suturing between the North China and South China cratons.
Jianghai Yang, Cawood, Peter Anthony, Peter A. Cawood, Yuansheng Du, Yang, Jianghai, Du, Yuansheng   +5 more
core   +1 more source

Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland [PDF]

Bulletin of the Geological Society of Finland
In this short communication, we present new detrital single grain zircon U-Pb data for six metasedimentary rock samples from Jämsä, Central Finland.
Perttu Mikkola, Matti Kurhila, Hannu Huhma   +2 more
doaj   +1 more source