Results 251 to 260 of about 75,336 (360)

Eu isotope fractionation and hydrothermal alteration. [PDF]

open access: yesSci Rep
Lee SG   +7 more
europepmc   +1 more source

Molecular characterization of the type species of Kyrtuthrix (Rivulariaceae, Cyanobacteriota) with comparison to Nunduva: Morphologically different but molecularly cryptic genera

open access: yesJournal of Phycology, EarlyView.
Abstract The euendolithic genus Kyrtuthrix was originally described in 1929 by A. Ercegović from the Dalmatian coast. Due to its isopolar filaments, Kyrtuthrix was classified within the cyanobacterial system as part of the family Scytonemataceae, even though trichomes tapering toward their ends represent a feature typical of the family Rivulariaceae ...
Alžběta Vondrášková   +7 more
wiley   +1 more source

Insights on the volcanic and impact histories of the lunar nearside from the petrology, geochemistry, and geochronology of the Calcalong Creek lunar regolith breccia meteorite

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 3, Page 392-421, March 2025.
Abstract The Calcalong Creek lunar meteorite is a regolith breccia with a lithologically diverse array of clasts set in a glassy, highly vesicular matrix. Here, we present a comprehensive new analysis of the meteorite. Comparisons to remote sensing data, lunar sample lithologies, and lunar sample ages indicate that it was likely sourced from regolith ...
B. H. Oliveira   +6 more
wiley   +1 more source

Mineralogical variations of sand sediments in the Tigris and Euphrates Rivers: implications for agricultural sustainability. [PDF]

open access: yesEnviron Monit Assess
Al-Shihmani LSS   +4 more
europepmc   +1 more source

Feasibility of in situ K‐Ar isochron dating on Mars: assessment using the mineralogy of Martian meteorites

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Dating rocks with a 2σ precision of 200 Ma is required to understand the history of Martian habitability and volcanic activity since ~4000 Ma. In situ K‐Ar dating using a spot‐by‐spot laser ablation technique has been developed for isochron dating on Mars.
Hikaru Hyuga   +4 more
wiley   +1 more source

Pervasive impact modification of pristine lunar clasts. [PDF]

open access: yesNat Commun
Barboni M   +4 more
europepmc   +1 more source

Evidence for late impact‐induced metasomatism on the brachinite parent body recorded by a phosphate assemblage in NWA 7828

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Brachinites are a group of ultramafic achondritic meteorites thought to sample a planetesimal from the early inner solar system. They yield predominately ancient crystallization ages within 4 Ma of CAI formation, and while the formation mechanism for these samples is debated, they are widely thought to be partial melt residues from a ...
L. F. White   +7 more
wiley   +1 more source

Olivine fabric and microstructure in Northwest Africa (NWA) 7059 and Nova 018: Insights into ureilite deformation

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Olivine is a major constituent in ureilites and commonly defines macroscopic fabric via shape‐preferred orientation of elongate grains. In this study, we examined olivine fabric (crystallographic preferred orientation, or CPO) and microstructures in the unbrecciated olivine‐pigeonite ureilites Northwest Africa (NWA) 7059 and Nova 018 using ...
A. I. Sheen   +5 more
wiley   +1 more source

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