Results 91 to 100 of about 4,827,389 (178)

A novel sample pre-screening methodology for accurate in situ U-Pb dating of zircon crystals

Heliyon
Internal inhomogeneity of the zircon crystals makes it difficult to date succedent geological processes. To overcome this limitation, a four-step pre-examination method is suggested before LA-ICP-MS based in situ U-Pb age determination of zircon crystals:
Annamária Kis
doaj   +1 more source

Deformation of the “Anorogenic” Wolf River Batholith, Wisconsin, USA: Understanding the Baraboo Orogeny Hinterland

Geosciences
The Mesoproterozoic (~1470 Ma) Wolf River batholith (WRB) is exposed over 6500 km2, encompassing 11 plutons that crosscut the Archean Marshfield and Proterozoic Penokean terranes.
John P. Craddock, David H. Malone, Erica P. Craddock, Steven J. Baumann, John E. Malone, Ryan Porter   +5 more
doaj   +1 more source

U-Pb zircon geochronology and phase equilibria modelling of HP-LT rocks in the Ossa-Morena Zone, Portugal. [PDF]

Int J Earth Sci, 2020
Akker IV, Tajčmanová L, Marques FO, Burg JP.   +3 more
europepmc   +1 more source

The appearance and duration of the Jehol Biota: Constraint from SIMS U-Pb zircon dating for the Huajiying Formation in northern China. [PDF]

Proc Natl Acad Sci U S A, 2020
Yang S, He H, Jin F, Zhang F, Wu Y, Yu Z, Li Q, Wang M, O'Connor JK, Deng C, Zhu R, Zhou Z.   +11 more
europepmc   +1 more source

Onset of Thrusting at ca. 23 Ma in East Kunlun Mountains, Northern Tibet, Recorded by Syntectonic Strata

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The timing of Cenozoic deformation in the East Kunlun Mountains, northern Tibet, is crucial for understanding plateau growth but remains disputed due to the scarcity of direct chronological constraints on specific tectonic structures. Here, we present a high‐density‐sampling magnetostratigraphic record from the Xiaohongshan section, interior ...
Leyi Li, Hong Chang, Balázs Bradák, Xiaoke Qiang   +3 more
wiley   +1 more source

Forward Image Registration for Higher Level Interpretation of Zircon Provenance Based on Combined CL, U/Pb Age, and Geochemical Data

Geochemistry, Geophysics, Geosystems
Most detrital zircon studies generate grayscale cathodoluminescence (CL) images, U/Pb dates, and variably extensive trace element concentration data. Yet the combined information contained in these data is rarely used for a higher‐level interpretation of
Marco A. Acevedo Zamora, Balz S. Kamber, John T. Caulfield, Charlotte M. Allen, Justin S. Freeman   +4 more
doaj   +1 more source

Pre‐Eruptive Volatiles and Magma Storage Depth for the 2018 Eruption at Mount Veniaminof, Alaska

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Mount Veniaminof is a frequently active, open‐system arc volcano on the Alaska Peninsula, part of the Alaska‐Aleutian arc. Mount Veniaminof's September–December 2018 eruption began with small lava flows and culminated in a larger explosive event in November that produced a 450 km long continuous ash plume—one of the volcano's most significant ...
E. G. Huggins, P. Ruprecht, M. Loewen, M. Gavrilenko, R. J. Bodnar, M. Harlaux   +5 more
wiley   +1 more source

A Late Cretaceous‐Eocene Geomagnetic Polarity Time Scale (MM26) That Combines Marine Magnetic Anomaly Records, Radioisotopic Dates, and Astrochronology

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The Geomagnetic Polarity Time Scale (GPTS) is essential to date geological events in stratigraphic sequences and to reconstruct plate motions. The first GPTSs were based on the record of magnetic anomalies created by seafloor spreading, calibrated by a few radioisotopic dates.
A. Malinverno, S. R. Meyers
wiley   +1 more source

Sensitization of OSL Signals in Quartz and Provenance Implications: Insights From Multi‐Spectroscopic Analysis of Quartz From Multiple Geological Settings

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 10, October 2026.
Abstract Quartz optically stimulated luminescence (OSL) sensitivity and electron spin resonance (ESR) signals have been empirically proposed as indicators of sediment provenance. OSL sensitivity is defined as luminescence produced per unit dose (Gray: Gy) per unit mass (mg).
Monika Devi, Serban‐Constantin Grecu, Zsejke‐Réka Tóth, Daniela Constantin, Daniela Brezeanu, Anca Barla, Ion Nesterovschi, Simona Cinta‐Pinzaru, Mihai N. Ducea, Stephen J. Mojzsis, Alida Timar   +10 more
wiley   +1 more source

U-Pb TIMS zircon age constraints on the Tardree Rhyolite zircon fission track standard [PDF]

, 2008
Troll, V., Chew, D., Corfu, F., Meade, F., Ganerød, M.   +4 more
core   +7 more sources