Results 11 to 20 of about 6,544,459 (237)

Apatite U-Pb Thermochronology: A Review [PDF]

open access: yesMinerals, 2021
The temperature sensitivity of the U-Pb apatite system (350–570 °C) makes it a powerful tool to study thermal histories in the deeper crust. Recent studies have exploited diffusive Pb loss from apatite crystals to generate t-T paths between ~350–570 °C, by comparing apatite U-Pb ID-TIMS (isotope dilution-thermal ionisation mass spectrometry) dates with
David M. Chew, Richard A. Spikings
openaire   +2 more sources

Apatite: a U-Pb thermochronometer or geochronometer?

open access: yesLithos, 2018
Abstract Apatite is an accessory mineral that is frequently found in both igneous and clastic sedimentary rocks. It is conventionally considered to be characterized by a closure temperature range between 375 and 600 °C and hence has been employed to address mid-temperature thermochronology questions relevant to the reconstruction of thermal events in
Kirkland, C. L.   +6 more
openaire   +5 more sources

Modeling apparent Pb loss in zircon U–Pb geochronology [PDF]

open access: yesGeochronology
The loss of radiogenic Pb from zircon is known to be a major factor that can cause inaccuracy in the U–Pb geochronological system; hence, there is a need to better characterize the distribution of Pb loss in natural samples.
G. R. Sharman, M. A. Malkowski
doaj   +2 more sources

Late Paleozoic oxygenation of marine environments supported by dolomite U-Pb dating [PDF]

open access: yesNature Communications
Understanding causal relationships between evolution and ocean oxygenation hinges on reliable reconstructions of marine oxygen levels, typically from redox-sensitive geochemical proxies.
Michal Ben-Israel   +5 more
doaj   +2 more sources

Petrography descriptions and U-Pb zircon datasets from the Archean Pavas Block, Precambrian of Uruguay [PDF]

open access: yesData in Brief, 2021
This database is a geological and geochronological compilation made to study a small Archean/Paleoproterozoic block located in the centre of the Precambrian rock exposition of Uruguay.
Henri Masquelin   +3 more
doaj   +2 more sources

Impact and Correction of Analytical Positioning on Accuracy of Zircon U-Pb Dating by SIMS [PDF]

open access: yesFrontiers in Chemistry, 2020
Secondary ion mass spectrometry (SIMS) is one of the most important analytical tools for geochronology, especially for zircon U-Pb dating. Due to its advantages in spatial resolution and analytical precision, SIMS is the preferred option for multi-spot ...
Yu Liu   +13 more
doaj   +2 more sources

High-precision U-Pb data and reference age for Emerald Lake apatite(Mendeley Data). [PDF]

open access: yesData in Brief
New isotope dilution thermal ionization mass spectrometry U-Pb data for Emerald Lake apatite demonstrate its potential as a reference material for geochronology.
Francisco E. Apen   +2 more
doaj   +2 more sources

Expanding the limits of laser-ablation U–Pb calcite geochronology [PDF]

open access: yesGeochronology, 2020
U–Pb geochronology of calcite by laser-ablation inductively coupled plasma mass spectrometry (LA-ICPMS) is an emerging field with potential to solve a vast array of geologic problems.
A. R. C. Kylander-Clark
doaj   +2 more sources

Secular change of tectonic setting in the Archean Takanen greenstone belt, northeastern Karelia Province, Fennoscandian Shield [PDF]

open access: yesBulletin of the Geological Society of Finland, 2023
The target of this study is the Takanen greenstone belt (TGB), a small 11-km-long and east-west oriented supracrustal belt in the northern Lentua complex of the Western Karelia Subprovince (eastern Finland).
Ville Järvinen   +6 more
doaj   +1 more source

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