Results 21 to 30 of about 1,303 (163)

Petrogenesis of the Cretaceous Intraplate Mafic Intrusions in the Eastern Tianshan Orogen, NW China

Frontiers in Earth Science, 2021
In this study, we conducted zircon U-Pb dating, and whole-rock geochemical and Sr-Nd isotope analyses on the Late Mesozoic dolerite dykes in the Bailingshan Fe deposit (Eastern Tianshan Orogen, NW China) to unravel their petrogenesis and regional ...
Weifeng Zhang, Weifeng Zhang, Xin Deng, Bing Tu, Lianhong Peng, Xinbiao Jin   +5 more
doaj   +1 more source

Baddeleyite and zircon U-Pb ages of the ultramafic rocks in Chigu Tso area, Southeastern Tibet and their constraints on the timing of Comei Large Igneous Province

China Geology, 2020
: A suite of ultramafic and mafic rocks developed in the Chigu Tso area, eastern Tethyan Himalaya. Baddeleyite and zircon U-Pb ages acquired by SIMS and LA-ICP-MS from olivine pyroxenite rocks in the Chigu Tso area are 138.9±3.0 Ma and 139.0±1.9 Ma ...
Ya-ying Wang, Ling-sen Zeng, Ling-hao Zhao, Li-e Gao, Jia-hao Gao, Zhao-ping Hu, Hai-tao Wang, Guang-xu Li, Ying-long Di, Yu Shen, Qian Xu   +10 more
doaj   +1 more source

Analytical Conditions for U-Th-Pb Dating of Monazite by LA-ICP-MS

Yankuang ceshi, 2021
BACKGROUND Compared with zircon U-Pb dating, monazite has more advantages in the dating of some metamorphic rocks or highly differentiated rocks.
ZHANG Ya, LI Quan-zhong, YAN Jun, XIE Jian-cheng, YANG Qing-liang, GAO Ling   +5 more
doaj   +1 more source

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

Earth, 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, Mitsuhiro Nagata, Shigeru Sueoka, Shoma Fukuda, Yuya Kajita, Yasuhiro Ogita, Saya Kagami, Tatsunori Yokoyama, Takahiro Tagami   +8 more
doaj   +1 more source

Archived U-Pb (zircon) dates from southern New Brunswick

Atlantic Geology, 2003
U-Pb (zircon) ages for eight samples from southern New Brunswick were determined during the early 1990's as part of a regional mapping and correlation program. Although most of the dates have been subsequently quoted in the literature through personal communications, and some preliminary isochron diagrams have been incorporated in papers, the results ...
Malcolm J. McLeod, Susan C. Johnson, Tom E. Krogh   +2 more
openaire   +2 more sources

Hf isotopic compositions of the standard zircons for U-Pb dating

Chinese Science Bulletin, 2004
Using the newly published Yb isotopic abundances and the mass bias relationship between Yb and Hf, we carried out an analysis of Hf isotopes in the standard zircon 91500 by means of 193 nm laser attached to Neptune multi-collector ICP-MS (LA-MC-ICPMS).
Ping Xu, Fuyuan Wu, Liewen Xie, Yueheng Yang   +3 more
openaire   +2 more sources

Dating the megalithic culture of laos: Radiocarbon, optically stimulated luminescence and U/Pb zircon results [PDF]

PLOS ONE, 2021
The megalithic jar sites of Laos (often referred to as the Plain of Jars) remain one of Southeast Asia’s most mysterious and least understood archaeological cultures. The sites, recently inscribed as UNESCO World Heritage, host hollowed stone jars, up to three metres in height, which appear scattered across the landscape, alone or clustered in groups ...
Zerboni, Andrea, Shewan, Louise, O’Reilly, Dougald, Armstrong, Richard, Toms, Phillip, Webb, John, Beavan, Nancy, Luangkhoth, Thonglith, Wood, Jamie C., Halcrow, Siân, Domett, Kate, Van Den Bergh, Julie, Chang, Nigel   +12 more
openaire   +5 more sources

Discordance dating: A new approach for dating alteration events [PDF]

Geochronology
Zircon is the premier geochronometer used to date igneous and metamorphic processes, constrain sediment provenance models, and monitor key events in Earth history such as the growth of continents and the evolution of the biosphere.
J. R. Reimink, R. Beckman, E. Schoonover, M. Lloyd, J. Garber, J. H. F. L. Davies, A. Cerminaro, A. Cerminaro, M. G. Perrot, M. G. Perrot, A. Smye   +10 more
doaj   +1 more source

New identification and significance of Early Cretaceous mafic rocks in the interior South China Block

Scientific Reports, 2021
Early Cretaceous mafic rocks are first reported in the northern Guangxi region from the western Qin-Hang belt in the interior South China Block. A systematic investigation of zircon U–Pb dating, whole-rock geochemistry, Sm–Nd isotopes and zircon Hf–O ...
Hui-Min Su, Shao-Yong Jiang, Jia-Bin Shao, Dong-Yang Zhang, Xiang-Ke Wu, Xi-Qiang Huang   +5 more
doaj   +1 more source

U-Pb (LA-ICPMS) zircon ages and Nd isotopes for granitoids of the Tamboril-Santa Quitéria Complex, Ceará Central Domain: implication for neoproterozoic syncollisional magmatism in north Borborema Province [PDF]

Geologia USP. Série Científica, 2013
The Tamboril-Santa Quitéria Complex (TSQC) is one of the largest Neoproterozoic plutonic manifestations in the northBorborema Province (NE Brazil). It represents an anatectic/igneous association characterized by a number of magmaticpulses that occurred ...
Felipe Grandjean da Costa, Carlos Eduardo Ganade de Araújo, Wagner da Silva Amaral, Antonio Maurilio Vasconcelos, Joseneusa Brilhante Rodrigues   +4 more
doaj   +1 more source