Results 111 to 120 of about 25,230 (195)
Marc Chaussidon—Leonard Medal 2026
Meteoritics &Planetary Science, EarlyView.
François Robert
wiley +1 more source
Baculites Ontogeny δ18O and δ13C Data
, 2019 This file contains all of the ontogenetically sampled δ18O and δ13C data used to construct the isotopic profiles for each of the baculites in this ...
Tobin, Thomas S. +3 more
core +1 more source
Communications Earth & EnvironmentCompositional heterogeneity exists in Earth’s deep mantle, which can be caused by the subduction of oceanic slabs. How early this process started on Earth remains highly debated due to the scarcity of early Archean materials with pristine mantle ...
Dongjian Ouyang +3 more
doaj +1 more source
Variations of δ18O in rainwater from southwestern Oregon
, 2010 We examine the relation between δ18O in rainwater collected in southwestern Oregon and climate variables including temperature, parcel trajectory, precipitation amount, and specific humidity. Local surface air temperature at the time of sample collection
Ersek, V +6 more
core +1 more source
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract The drawdown of atmospheric CO2 likely triggered Antarctic glaciation during the Eocene‐Oligocene Transition (34 Ma). Accurately constraining this shift from “greenhouse” to an “icehouse” climate is essential for understanding global carbon cycle dynamics.
Keehwan Lee +5 more
wiley +1 more source
Oxygen isotope values of charred tree bark as an indicator of forest fire severity
Trees, Forests and PeopleThe objective of this study was to determine if oxygen isotope values of charred tree bark could be used to reconstruct fire severity. The study was completed north of River Valley, Ontario, Canada, where a wildfire burned approximately 2500 hectares of ...
Elizabeth McDonald +2 more
doaj +1 more source
The Depositional Record, Volume 12, Issue 4, September 2026.This study compares primary dolomite precipitation in modern and ancient environments, varying from coastal to transitional to continental saline environments. The microbially mediated dolomites are characterised by high Sr concentrations. Here, various geochemical proxies are studied and compared to previous findings.
Carlette N. Blok +4 more
wiley +1 more source
Temperature Changes in the Altai Are Driven by Solar and Anthropogenic Forcing
CHIMIA, 2009 Anja Eichler +7 more
doaj +1 more source
South African Journal of ScienceBased on the decadal rainfall events (April 2015 to April 2025), the ordinary least squares regression for the Johannesburg Local Meteoric Line is represented by δ2H = 6.95 δ18O + 11.6‰.
Tamiru A. Abiye
doaj +1 more source
The Depositional Record, Volume 12, Issue 4, September 2026.Microfabric distribution controls porosity, preservation and erosion in Late Pleistocene microbialites from the Maquinchao Basin (Argentina). Differential preservation of laminated and shrub fabrics shapes the present morphology of the carbonate build‐ups and influences their palaeoenvironmental interpretation.
Inès Eymard +7 more
wiley +1 more source