Results 181 to 190 of about 8,420 (233)

The Earth's Greatest Porous Media

open access: yesPerspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract How deeply does modern meteoric water circulate into the continental crust? How deep is the Earth's Critical Zone (CZ), the top layer of the continental lithosphere that co‐evolves with the atmosphere, hydrosphere, and biosphere, extending from vegetation canopy down to fresh bedrock and the base of active groundwater circulation?
Ying Fan   +3 more
wiley   +1 more source

An early origin of oxygenic photosynthesis delays the Great Oxidation. [PDF]

open access: yesPhilos Trans R Soc Lond B Biol Sci
Horne JE, Goldblatt C, Kump L.
europepmc   +1 more source

Effect of Laboratory Reagents for Cleaning Modern Contamination on the δ15N Integrity of Nitrogen‐Poor Samples

open access: yesRapid Communications in Mass Spectrometry, Volume 40, Issue 19, 15 October 2026.
ABSTRACT Rationale Nitrogen isotope values have been widely used for tracing ancient biogeochemical processes, but contaminant‐sensitive materials, such as Precambrian sedimentary rocks, meteorites, or returned extraterrestrial samples, often have low nitrogen levels and are thus vulnerable to modern organic contamination.
Kunmanee Bubphamanee   +2 more
wiley   +1 more source

CNR Ozone Sounding Merged (COSM) Dataset From Existing Global Archives

open access: yesGeoscience Data Journal, Volume 13, Issue 4, October 2026.
The COSM dataset unifies over 101,000 ozonesonde profiles from SHADOZ, NDACC and WOUDC into a harmonized, quality‐controlled archive spanning 1978–2024. It improves global spatial and temporal coverage, supports climate and chemistry studies, and provides a robust resource for satellite validation, model evaluation and trend analysis.
Fabrizio Marra   +4 more
wiley   +1 more source

Kerogen-rich rocks influence growth and composition of an anaerobic microbial community. [PDF]

open access: yesSci Rep
Waajen AC   +5 more
europepmc   +1 more source

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