Results 121 to 130 of about 16,157 (210)

PALEOPROTEROZOIC MINISTROMATOLITES OF KARELIA: STRUCTURE AND COMPOSITION

Proceedings of the Karelian Research Centre of the Russian Academy of Sciences, 2019
The main subdivisions among the most widespread column types in the Paleoproterozoic complex of Karelian ministromatolites were identified based on their characteristic morphological features. That helps to refine the classification of the class Ministromatophyceae (ministromatolites) and systematize the available material. Individual petrographic thin
openaire   +3 more sources

Paleoproterozoic Reworking of Archean Crust and Extreme Back‐Arc Metamorphism in the Enigmatic Southern Trans‐Hudson Orogen

Geophysical Research Letters
The crustal evolution of the southernmost ∼2000–1800 Ma Trans‐Hudson orogen (THO) is enigmatic due to burial by Phanerozoic sediments. We provide new insights through petrochronologic analysis of a paragneiss drill core sample.
Ian W. Hillenbrand, Amy K. Gilmer, Michael L. Williams, A. Kate Souders, Michael J. Jercinovic, Heather A. Lowers, Jorge A. Vazquez   +6 more
doaj   +1 more source

Primordial Eukaryotes in a Paleoproterozoic Sea [PDF]

Goldschmidt Abstracts, 2020
Benjamin Nettersheim, Jochen Brocks
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Paleoproterozoic orogenic belts

, 1996
M R St-Onge, S B Lucas
openaire   +1 more source

U-Pb ID-TIMS age of the Tiksheozero carbonatite: expression of 2.0 Ga alkaline magmatism in Karelia, Russia

Open Geosciences, 2011
Corfu Fernando, Bayanova Tamara, Shchiptsov Vladimir, Frantz Natalia   +3 more
doaj   +1 more source

Tectonism rather than "snowball Earth" glaciation is responsible for the Great Unconformity. [PDF]

Proc Natl Acad Sci U S A
Zhan RR, Duan L, Zattin M, Christie-Blick N, Wan B, Wei RH, Yang Z, Wang J, Gou L, Olivetti V, Chen KY, Zhang X.   +11 more
europepmc   +1 more source

Redox Dynamics of the Atmosphere and Oceans Induced by the Paleoproterozoic Snowball Earth Events. [PDF]

Geobiology
Harada M, Miura Y, Watanabe Y, Ozaki K.
europepmc   +1 more source

Large-scale crustal growth driven by LIP magmatism during the Paleoproterozoic. [PDF]

Nat Commun
Simões MS, Kylander-Clark ARC, Vasquez ML, Sommer CA, Rossetti LMM, Cottle JM, Mendes TA.   +6 more
europepmc   +1 more source

Geology and land use as key drivers for hydrogeochemistry in a mining district of the Quadrilátero Ferrífero, Brazil: implications for water management strategies. [PDF]

Environ Geochem Health
Salomão GN, da Costa Andrade NYM, de Almeida GS, Amarante RT, Dall'Agnol R, Pontes PRM, Sahoo PK, Leão LP, Marques ED, da Silva-Filho EV.   +9 more
europepmc   +1 more source

Deep crustal magnetotelluric imaging of continental accretion and intracontinental deformation in central Australia. [PDF]

Sci Rep
Heinson G, Kay B, Baker D, Margiono R.
europepmc   +1 more source