Results 1 to 10 of about 156,597 (147)

New monazite U-Pb age constraints on the evolution of the Paleoproterozoic Vaasa granitoid batholith, western Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2016
The Vaasa batholith, western Finland, is a large, peraluminous granitoid pluton that crystallized at 1.88–1.87 Ga during the culmination of the Svecofennian orogeny.
A.K. Kotilainen   +4 more
doaj   +4 more sources

SHRIMP zircon U–Pb ages from coal beds across the Permian–Triassic boundary, eastern Yunnan, southwestern China [PDF]

open access: yesJournal of Palaeogeography, 2018
The first SHRIMP zircon U–Pb ages from coal beds close to the end-Permian mass extinction are reported from the C1 coal seam in the Yantang Mine in Laibin Town, Xuanwei County, eastern Yunnan Province.
Juan Wang   +4 more
doaj   +5 more sources

DQPB: software for calculating disequilibrium U–Pb ages [PDF]

open access: yesGeochronology, 2023
Initial radioactive disequilibrium amongst intermediate nuclides of the U decay chains can have a significant impact on the accuracy of U–Pb ages, especially in young samples.
T. Pollard   +7 more
doaj   +1 more source

Direct U–Pb dating of carbonates from micron-scale femtosecond laser ablation inductively coupled plasma mass spectrometry images using robust regression [PDF]

open access: yesGeochronology, 2021
Uranium–lead (U–Pb) dating of carbonates by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) spot analysis is an increasingly used method in the field of geosciences, as it brings very strong constraints over the geological history
G. Hoareau   +7 more
doaj   +1 more source

Two pulse intrusive events of the Pliocene Tanigawa-dake granites revealed from zircon U–Pb dating

open access: yesEarth, Planets and Space, 2021
We performed zircon U–Pb dating on the Pliocene Tanigawa-dake granites (Makihata and Tanigawa bodies) and the Cretaceous Minakami quartzdiorite, Northeast Japan Arc.
Saki Minami   +8 more
doaj   +1 more source

Evaluating U-Pb accuracy and precision by comparing zircon ages from 12 standards using TIMS and LA-ICP-MS methods

open access: yesGeosystems and Geoenvironment, 2023
U-Pb geochronological studies based on LA-ICP-MS isotopic measurements often require a profound understanding of the accuracy, precision, and preferred ages derived from this methodology.
Stephen J. Puetz, Christopher J. Spencer
doaj   +1 more source

Technical note: LA–ICP-MS U–Pb dating of unetched and etched apatites [PDF]

open access: yesGeochronology, 2021
The same unetched and chemically etched apatite crystals from five rock samples were dated by the U–Pb method via laser ablation inductively coupled plasma mass spectrometry (LA–ICP-MS).
F. Abdullin   +3 more
doaj   +1 more source

Tectonic history of the South Tannuol Fault Zone (Tuva region of the northern Central Asian Orogenic Belt, Russia) : constraints from multi-method geochronology [PDF]

open access: yes, 2020
In this study, we present zircon U/Pb, plagioclase and K-feldspar Ar-40/Ar-39 and apatite fission track (AFT) data along the South Tannuol Fault Zone (STFZ).
De Grave, Johan   +6 more
core   +1 more source

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

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   +1 more source

Exploring the CAM18 Crystal as a Potential Reference Material for U–Pb Analysis of Zircon

open access: yesCrystals, 2023
In the process of in situ zircon U–Pb dating, it is an effective means to overcome the matrix effect by using a matrix-matched external reference material.
Wurui Li   +4 more
doaj   +1 more source

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