Results 81 to 90 of about 16,800 (234)

Multi‐Method Geochronology and P‒T Modeling Unravels the Thermo‐Tectonic History of the Rudall Province, Western Australia

Tectonics, Volume 45, Issue 2, February 2026.
Abstract The Rudall Province (RP) is a Paleo‐Mesoproterozoic belt that records numerous overprinting tectono‐metamorphic events. Situated on the eastern edge of the West Australian Craton (WAC), the RP represents a key area for understanding the Proterozoic assembly and subsequent tectonic history of Western Australia.
Alejandra Bedoya, Martin Hand, Xiao‐Fang He, Jade Anderson, David E. Kelsey, Christopher L. Kirkland, Stijn Glorie   +6 more
wiley   +1 more source

A temporal control on the isotopic compositions of the Antarctic Peninsula arc

Communications Earth & Environment
Radiogenic isotopic compositions of arc magmas are a key tool for studying active margin evolution. They have two isotopic end-members: melts formed mostly from juvenile asthenosphere and melts sourced from evolved continental crust/continental ...
Joaquin Bastias-Silva, Alex Burton-Johnson, David Chew, Teal Riley, Wuidad Jara, Massimo Chiaradia   +5 more
doaj   +1 more source

Emissions from pre-Hispanic metallurgy in the South American atmosphere [PDF]

, 2014
Peer reviewedPublisher ...
De Vleeschouwer, François, Le Roux, Gaël, Mauquoy, Dmitri, Piotrowska, Natalia, Roland, Thomas, Stein, Ariel, Torrejón, Fernando, Vanneste, Heleen   +7 more
core   +8 more sources

Silicate and Carbonate Weathering Perturbation at the Eocene‐Oligocene Transition Recorded by Mg Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract During the Eocene‐Oligocene Transition (ca. 34 Ma), the Earth underwent a dramatic decline in atmospheric CO2, global cooling, a deepening of the carbonate compensation depth (CCD), and the formation of a permanent ice sheet on Antarctica. The expansion of Antarctic glaciers eroded the underlying bedrock and increased the weathering flux to ...
Adam D. Sproson, Toshihiro Yoshimura, Shigeyuki Wakaki, Takahiro Aze, Yusuke Yokoyama, Tsuyoshi Ishikawa, Naohiko Ohkouchi   +6 more
wiley   +1 more source

Crustal Architecture of the Paleo‐Pacific Rift Margin of East Antarctica: Evidence From U‐Pb Ages and O‐Hf Isotope Compositions of Ross Orogen Granitoids

Geochemistry, Geophysics, Geosystems
Granitic batholiths of the ∼500 Ma Ross Orogen in Antarctica are voluminous in scale, reflecting prolific magmatism along the active early Paleozoic convergent margin of Gondwana.
John W. Goodge, C. Mark Fanning, Christopher M. Fisher, Jeffrey D. Vervoort   +3 more
doaj   +1 more source

Magnesium Isotopes as a Tracer of Crustal Materials in Volcanic Arc Magmas in the Northern Cascade Arc

Frontiers in Earth Science, 2018
Fifteen North Cascade Arc basalts and andesites were analyzed for Mg isotopes to investigate the extent and manner of crustal contributions to this magmatic system.
Aaron W. Brewer, Aaron W. Brewer, Fang-Zhen Teng, Emily Mullen   +3 more
doaj   +1 more source

Assessing Pb Isotopic Equilibrium Between Apatite and K‐Feldspar

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Quantifying common Pb, the non‐radiogenic Pb present in a mineral independent of in situ U decay, is essential for obtaining accurate U–Pb ages in common Pb‐bearing minerals such as apatite. However, constraining the amount and composition of common Pb, as well as the timing of its entrapment, remains a persistent challenge.
Priyanjan Datta, Christopher L. Kirkland, Janne Liebmann, Hugo K. H. Olierook   +3 more
wiley   +1 more source

A heterogeneous subcontinental mantle under the African-Arabian Plate boundary revealed by boron and radiogenic isotopes. [PDF]

Sci Rep, 2021
Agostini S, Di Giuseppe P, Manetti P, Doglioni C, Conticelli S.   +4 more
europepmc   +1 more source

Oxygen isotope ratios in olivine from the Hawaii Scientific Drilling Project [PDF]

, 1996
Oxygen isotope ratios of olivine in 23 tholeiites from the Hawaii Scientific Drilling Project (HSDP) core (15 from Mauna Kea, 8 from Mauna Loa) and three samples of outcropping subaerial or dredged submarine Mauna Kea lavas have been measured by laser ...
Eiler, John M., Stolper, Edward M., Valley, John W.   +2 more
core   +1 more source

From Collision to Subduction: Thermal‐Kinematic Inversions Constrain Plate Boundary Structure and Dip‐Slip Activity in Southwestern New Zealand

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract Constraints on three‐dimensional fault system geometry and kinematics are required to understand both long‐term tectonics and contemporary seismic hazard. In many cases, these parameters must be inferred from a combination of different data or analyses.
A. M. Mere, N. C. Barth, D. Seward, D. McPhillips   +3 more
wiley   +1 more source