Results 81 to 90 of about 17,614 (181)

Archean komatiite volcanism controlled by the evolution of early continents

open access: yes, 2014
The generation and evolution of Earth’s continental crust has played a fundamental role in the development of the planet. Its formation modified the composition of the mantle, contributed to the establishment of the atmosphere, and led to the creation of
Kirkland, Chris   +10 more
core   +2 more sources

Mid-Archean Idealized Tide Simulations

open access: yes
Dataset that corresponds with the publication "Investigating the behavior of mid-Archean tides and potential implications for biogeochemical cycling" (Crawford et al ...
Crawford, Eliana
core   +1 more source

Quench Plagioclase from some Archean Basalts

open access: yes, 1974
Quench plagioclase has been recognized in well preserved Archean submarine basalts from four localities in the superior province of the Canadian Shield. The crystals are skeletal in form with hollow cross sections and swallow tail terminations.
T. H. Pearce
core   +1 more source

Evolution of the Archean Atmosphere [PDF]

open access: yes
Archean atmospheric evolution is the transition from an abiological atmosphere, to an atmosphere for which the composition and therefore climate is highly altered by life.
Horne, Julia E.   +2 more
core   +1 more source

Potassium Isotope Evidence for Origin of Archean TTG Rocks From Seawater‐Hydrothermally Altered Oceanic Crust

open access: yesGeochemistry, Geophysics, Geosystems
Tonalite‐trondhjemite‐granodiorite (TTG) rocks constitute a crucial part of the Archean continental crust, yet their origins remain contentious. It is critical to decipher their source nature and hydration mechanism.
D.‐Y. Xiong   +7 more
doaj   +1 more source

Geological and isotopic characteristics of granites from the Western Pernambuco-Alagoas Domain: implications for the crustal evolution of the Neoproterozoic Borborema Province

open access: yesBrazilian Journal of Geology
The Western Pernambuco-Alagoas Domain is a complex tectonic domain of the Southern part of the Neoproterozoic Borborema Province. It borders the Northern margin of São Francisco Craton. U-Pb and Sm-Nd data discussed in this work show that, in the Western
Rodrigo Fabiano da Cruz   +3 more
doaj   +1 more source

Plant NAOGAT (ArgJ) Structure Reveals Mechanism of Ornithine Biosynthesis, Preference for Acetylornithine and Susceptibility to Mangotoxin

open access: yesPlant, Cell &Environment, Volume 49, Issue 12, Page 10283-10300, December 2026.
ABSTRACT Arginine metabolism in plants is targeted by phytopathogens such as Pseudomonas syringae strains, which produce toxins that affect enzymes of plant arginine metabolism, causing devastating infections in crops. In this work, the structural and functional properties of plant N‐acetylornithine glutamate acetyltransferase (NAOGAT), the key ...
Maciej Nielipinski   +3 more
wiley   +1 more source

Hf isotope composition of zircon from Archean TTG terrains

open access: yes
Hf and U-Pb isotope composition of zircon from Archean ...
Musiyachenko, Kira
core   +1 more source

Permian sedimentary sequence containing analcimolite and authigenic aegirine from the Boskovice Basin (Bohemian Massif, Czechia)

open access: yesThe Depositional Record, Volume 12, Issue 5, November 2026.
The Permian freshwater lacustrine sedimentary sequence rich in analcime, with unusual authigenic aegirine and NaFe3+ clinopyroxene. Product of ashfall directly linked with fossil accumulation (Konzentrat‐Lagerstätte). Abstract The Early Permian freshwater lacustrine sedimentary sequence in the vicinity of Bačov (Czechia) is world‐famous for its rich ...
Jakub Jirásek   +3 more
wiley   +1 more source

Striding-Athabasca mylonite zone: implications for the Archean and Early Proterozoic tectonics of the western Canadian Shield

open access: yes, 1995
Study of the northern Saskatchewan–District of Mackenzie segment of the Snowbird tectonic zone suggests that fragments of relatively stiff mid-Archean crust, possibly arc related, have controlled the localization, shape, and complex kinematics of the ...
Simon Hanmer   +2 more
core   +1 more source

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