Results 181 to 190 of about 6,981 (220)

The Paleoproterozoic megascopic Stirling biota

Paleobiology, 2007
Abstract The 2.0–1.8-billion-year-old Stirling Range Formation in southwestern Australia preserves the deposits of a siliciclastic shoreline formed under the influence of storms, longshore currents, and tidal currents.
Stefan Bengtson, Birger Rasmussen, Bryan Krapež   +2 more
openaire   +1 more source

Isotopic and geochemical constraints on the Paleoproterozoic Hutchison Group, southern Australia: Implications for Paleoproterozoic continental reconstructions

Precambrian Research, 2011
Abstract Geochemical, Sm–Nd isotopic, and U–Pb–Lu–Hf zircon analyses reveal the sedimentary succession formerly recognised as the Hutchison Group consists of three temporally and isotopically distinct groups, divided by a crustal-scale shear zone (Kalinjala Mylonite Zone).
Szpunar, M., Hand, M., Hatch, K., Jagodzinski, L., Belousova, E.   +4 more
openaire   +2 more sources

A strongly oxidizing Paleoproterozoic era

Science, 2018
Early Earth Two billion years ago, marine sulfate concentrations were around one-third as high as modern ones, constituting an oxidizing capacity equivalent to more than 20% of that of the modern ocean-atmosphere system. Blattler et al.
openaire   +1 more source

The Paleoproterozoic Eastern Bahia Orogenic Domain

2016
The Paleoproterozoic Eastern Bahia orogenic domain occupies an approximately 200 km-wide area in the northern Sao Francisco craton, located between the Atlantic coast and the interior plateau of Bahia state known as the Chapada Diamantina. Together with its African counterpart, the West Central African belt of Gabon, the Eastern Bahia orogenic domain ...
Johildo Salomão Figueirêdo Barbosa, Rafael Gordilho Barbosa   +1 more
openaire   +1 more source

Neoarchean–Paleoproterozoic supercycles

2021
Johanna Salminen, Sally Pehrsson, David A.D. Evans, Chong Wang   +3 more
openaire   +1 more source

Halogen composition of Paleoproterozoic oceans

Goldschmidt2023 abstracts, 2023
Ray Burgess, Guillaume Avice, Bernard Marty, Lisa Ardoin   +3 more
openaire   +1 more source

Paleoproterozoic Ice Ages

2023
openaire   +1 more source

GROWTH AND MODIFICATION OF NEOARCHEAN-PALEOPROTEROZOIC CRUST

The temporal distribution of Earth’s crustal rocks exhibits distinctive age peaks, representing periods of significant crustal growth. Among these, the Neoarchean (2.7-2.5 Ga) and Paleoproterozoic (2.0-1.8 Ga) stand out as major periods of crustal formation in Earth’s early history.
openaire   +1 more source

Paleoproterozoic Snowball Earth

2023
openaire   +1 more source

Assembly of the Siberian Craton: Constraints from Paleoproterozoic granitoids

Precambrian Research, 2020
T V Donskaya
exaly