Results 31 to 40 of about 51,804 (265)

SHRIMP ion probe zircon geochronology and Sr and Nd isotope geochemistry for southern Longwood Range and Bluff Peninsula intrusive rocks of Southland, New Zealand [PDF]

, 2006
Permian–Jurassic ultramafic to felsic intrusive complexes at Bluff Peninsula and in the southern Longwood Range along the Southland coast represent a series of intraoceanic magmatic arcs with ages spanning a time interval of 110 m.y.
Ireland, Trevor R., Arculus, Richard J., Richard J. Arculus, Trevor R. Ireland, Richard C. Price, Price, Richard C., Maas, Roland, Roland Maas   +7 more
core   +1 more source

Detrital apatite Lu–Hf and U–Pb geochronology applied to the southwestern Siberian margin

Terra Nova, 2022
Apatite is increasingly used in sedimentary provenance studies. However, detrital apatite U–Pb geochronology can be challenging due to the presence of non‐radiogenic Pb, its intermediate closure temperature (~350–550°C) and/or age‐resetting by ...
S. Glorie, Jack Gillespie, Alexander Simpson, Sarah Gilbert, A. Khudoley, N. Priyatkina, M. Hand, C. Kirkland   +7 more
semanticscholar   +1 more source

Long-term repeatability and interlaboratory reproducibility of high-precision ID-TIMS U–Pb geochronology

Journal of Analytical Atomic Spectrometry, 2021
Age determination of minerals using the U–Pb technique is widely used to quantify time in Earth's history. A number of geochronology laboratories produce the highest precision U–Pb dates employing the EARTHTIME 202Pb–205Pb–233U–235U tracer solution for ...
U. Schaltegger, M. Ovtcharova, S. Gaynor, B. Schoene, J. Wotzlaw, J. Davies, F. Farina, N. Greber, D. Szymanowski, C. Chelle-Michou   +9 more
semanticscholar   +1 more source

Tools for uranium characterization in carbonate samples: case studies of natural U–Pb geochronology reference materials

Geochronology, 2021
. Laser ablation U–Pb analyses of carbonate (LAcarb) samples has greatly expanded the potential for U–Pb dating to a variety of carbonate-producing settings. Carbonates that were previously considered impossible to date using isotope dilution methods may
E. Rasbury, T. Present, P. Northrup, R. Tappero, A. Lanzirotti, Jennifer M. Cole, Kathleen M. Wooton, K. Hatton   +7 more
semanticscholar   +1 more source

40Ar/39Ar Geochronology, Geochemistry and Petrogenesis of the Volcanic Rocks in the Jiangling Basin, China

, 2022
In this study, 40Ar/39Ar geochronology and major and trace element data were presented for Paleogene basaltic rocks from the Jiangling Basin, China. The volcanic rocks erupted at ca. 53.19–60.78 Ma and belonged to the sub alkaline series.
Xiaocan Yu, Lijian Shen, Kai Yan, Chunlian Wang, Chao You, Ruiqin Li, Jiuyi Wang, Dianhe Liu   +7 more
core   +1 more source

Composition of spherules and lower mantle minerals, isotopic and geochemical characteristics of zircon from volcaniclastic facies of the Mriya lamproite pipe

Записки Горного института, 2020
The article presents the results of studying the rocks of the pyroclastic facies of the Mriya lamproite pipe, located on the Priazovsky block of the Ukrainian shield.
Ivan G. YATSENKO, Sergey G. SKUBLOV, Ekaterina V. LEVASHOVA, Olga L. GALANKINA, Sergey N. BEKESHA   +4 more
doaj   +1 more source

The use of ASH-15 flowstone as a matrix-matched reference material for laser-ablation U − Pb geochronology of calcite

Geochronology, 2020
. Latest advances in laser ablation inductively coupled plasma mass spectrometer (LA-ICPMS) allow for accurate in situ U−Pb dating of carbonate material, with final age uncertainties usually >3 % 2σ.
P. Nuriel, J. Wotzlaw, M. Ovtcharova, A. Vaks, C. Stremtan, Martin Šala, N. Roberts, A. Kylander-Clark   +7 more
semanticscholar   +1 more source

Detrital zircon U–Pb geochronology and geochemistry of the Riachuelos and Palma Sola beach sediments, Veracruz State, Gulf of Mexico: a new insight on palaeoenvironment

Journal of Palaeogeography, 2020
Zircons are abundant in the beach sediments. In this study, surface microtexture, mineralogy, bulk sediment geochemistry, trace element composition and U–Pb isotopic geochronology of detrital zircons collected from the Riachuelos and Palma Sola beach ...
J. Armstrong-Altrin
semanticscholar   +1 more source

Revisited digestion methods for trace element analysis in human hair

Journal of Analytical Science and Technology, 2019
Background The human hair is a potential material for assessing the exposure to environmental contaminants and tracing human mobility. Although various digestion methods have been proposed for determining trace elements in the human hair, there is no ...
Woo-Jin Shin, Minkyoung Jung, Jong-Sik Ryu, Jihwan Hwang, Kwang-Sik Lee   +4 more
doaj   +1 more source

Every zircon deserves a date: selection bias in detrital geochronology

Geological Magazine, 2021
Detrital zircon geochronology can help address stratigraphic- to lithospheric-scale geological questions. The approach is reliant on statistically robust, representative age distributions that fingerprint source areas. However, there is a range of biases
Maximilian Dröllner, M. Barham, C. Kirkland, B. Ware   +3 more
semanticscholar   +1 more source