Results 171 to 180 of about 148,265 (366)

Oligocene to Miocene Topographic Inversion and Accelerated Uplift of Southern Tibet Revealed by the Paleodrainage Evolution of Intermontane Basins

open access: yesGeophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract The uplift history of the Gangdese arc in Southern Tibet is fundamental to understanding when and how the plateau attained its current elevation and topographic relief. Detrital multi‐mineral provenance analysis of the Oligocene–Miocene strata in the intermontane Wuyu Basin provides new key information on the paleodrainage evolution in ...
Er‐Kun Xue   +5 more
wiley   +1 more source

Geomagnetic Dipole Strength During the Cretaceous Normal Superchron Recorded by Baked Sediments From Hainan (SE Asia)

open access: yesGeophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract The Cretaceous Normal Superchron constitutes an enigmatic ∼37‐Myr interval of stable polarity in the history of the Earth's magnetic field. The strength of the geomagnetic dipole moment during this interval is controversial, with absolute paleointensity determinations on crystallized volcanic rocks, volcanic glasses, and silicate crystals ...
Yuchen Chi   +4 more
wiley   +1 more source

Phanerozoic Onset of Massive Continental Weathering

open access: yesGeophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract Continental weathering acts as a nexus of global biogeochemical cycles yet its long‐term evolution remains unclear. Here we show that continental weathering may not have operated on a massive scale until the early Paleozoic based on a large‐number data compilation of mudstone geochemistry.
Shenghui Ouyang   +6 more
wiley   +1 more source

Zircons in rhyolites and dacites

open access: bronze, 1962
Takashi Yamamoto, Kazuko Matsukuma
openalex   +2 more sources

1.38 Ga Four‐Layer Tuff Marker Horizon in North China black Shales as a Chronostratigraphic Boundary for the Pre‐Ediacaran Geological Timescale

open access: yesGeophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract Boundaries in the Phanerozoic chronostratigraphic scale are mainly precisely defined and dated, and many correspond to environmental catastrophes induced by the emplacement of LIPs. The pre‐Ediacaran geological timescale is currently subdivided by approximate absolute ages.
Shuan‐Hong Zhang   +7 more
wiley   +1 more source

Melt reactions and timescales of melting in pelitic rocks-a case study from the Garhwal Himalaya. [PDF]

open access: yesContrib Mineral Petrol
Oldman CJ   +8 more
europepmc   +1 more source

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