Results 61 to 70 of about 1,457 (180)

A database of detrital zircon U–Pb ages and Lu–Hf isotope of sediments in the South China Sea

Geoscience Data Journal
Source‐to‐sink analysis examines the effects of source areas and basin (sink) dynamics on the generation, transport, composition, distribution and deposition of sediment in modern and ancient sedimentary systems.
Yu Huang, Lisha Hu
doaj   +1 more source

Geochemical and zircon 18O–Hf–U/Pb isotopic study of volcanic rocks from Lutao Island in the northern Luzon magmatic arc

Geoscience Letters
Lutao is an islet off the eastern coast of the main island of Taiwan and is composed of pyroclastic agglomerates, volcanic breccias, lava flows, and dykes. There have been no reports of SIMS zircon oxygen isotopic data from Lutao Island so far, which has
Nancy Hui-Chun Chen
doaj   +1 more source

Detrital zircon geochronology and its geological implications of the Nanduan formation in the Changning-Menglian tectonic belt, southwestern Yunnan

Frontiers in Earth Science
This study reports LA-ICP-MS U–Pb ages and Lu–Hf isotope data of detrital zircons from sedimentary rocks of the Nanduan Formation in the Changning–Menglian tectonic belt.
ShiChang Wang, YongSheng Dong, YuJie Hao, YuJie Hao, Wang Xu, YanLong Zhang, WanZhen Liu, WanZhen Liu, WanZhen Liu, AoPeng Li, AoPeng Li, HaoTian Liu   +11 more
doaj   +1 more source

Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an range

Open Geosciences
The Menghewula region in the southern Great Xing’an range is situated in the superposition area of the Paleo-Asian Oceanic metallogenic domain and the Western Pacific Metallogenic Domain.
Yue Haixin, Yu Henan, Sun Zhenjun, He Yanping, Yu Yingbo   +4 more
doaj   +1 more source

Combined Chemical Separation of Lu, Hf, Sm, Nd, and REEs from a Single Rock Digest:  Precise and Accurate Isotope Determinations of Lu−Hf and Sm−Nd Using Multicollector-ICPMS

Analytical Chemistry, 2001
A combined procedure for separating Lu, Hf, Sm, Nd, and rare earth elements (REEs) from a single sample digest is presented. The procedure consists of the following five steps: (1) sample dissolution via sodium peroxide sintering; (2) separation of the high field strength elements from the REEs and other matrix elements by a HF-free anion-exchange ...
Kleinhanns, IC, Kreissig, K, Kamber, BS, Meisel, T, Nagler, TF, Kramers, JD   +5 more
openaire   +7 more sources

Constraints for post-orogenic extension of the northern margin of the Qaidam Basin from the Late Silurian–Late Devonian igneous rocks in the Gahai–Nanshan area

Dizhi lixue xuebao
Objective  The northern margin tectonic zone of the Qaidam Basin underwent a transition from oceanic subduction to continental subduction during the Early Paleozoic, resulting in the formation of the ultrahigh-pressure metamorphic zone known as the ...
GAO Wanli, WANG Zongxiu, WU Lin, JIANG Wan, QIAN Tao   +4 more
doaj   +1 more source

Application of the Lu–Hf Isotopic System to Ore Geology, Metallogenesis and Mineral Exploration

, 2023
AbstractThe Lu-Hf isotopic system, much like the Sm-Nd isotopic system, can be used to understand crustal evolution and growth. Crustal differentiation processes yield reservoirs with differing initial Lu/Hf values, and radioactive decay of176Lu results in diverging176Hf/177Hf between reservoirs over time.
openaire   +1 more source

U-Pb dating, Lu-Hf isotope systematics and chemistry of zircon from the Morro do Polvilho meta-trachydacite: constraints on sources of magmatism and on the depositional age of the São Roque Group

Geologia USP. Série Científica, 2018
We present new in situ geochronological data of controversial silicic metavolcanic rocks from the lower terrigenous-metavolcanic sequence of the São Roque Group, Ribeira Belt, confirming that they are older than the rocks of higher-metamorphic grade ...
Renato Henrique-Pinto, Valdecir de Assis Janasi, Ginaldo Ademar da Cruz Campanha   +2 more
doaj   +1 more source

The Relationships between Greenstone Belts and the Kryvyi Rih–Kremenchuk Basin in the Middle Dnieper Domain of the Ukrainian Shield Revealed by Detrital Zircon

Geosciences
Detrital zircons from two samples of metasandstones from the Lykhmanivka Syncline, Middle Dnieper Domain of the Ukrainian Shield (Skelevate Formation of the Kryvyi Rih Group), have been dated by the LA-ICP-MS U-Pb method. Metasandstones from the northern
Hennadii Artemenko, Leonid Shumlyanskyy, David Chew, Foteini Drakou, Bruno Dhuime, Hugo Moreira, Valeryi Butyrin   +6 more
doaj   +1 more source

Geology, Mineralization, Geochemical exploration, Petrogenesis, zircon U-Pb geochronology and Lu-Hf isotopes sub-volcanic rocks in the Simorgh prospect area, Lut Block, Eastern Iran

Journal of Economic Geology, 2019
Introduction The Simorgh prospect area is located in 113 km southwest of the Nehbandan in South Khorasan province. This area is part of the Tertiary volcanic-plutonic rocks in the center of the Lut block.
Reza Borabadi, Seyed Ahmad Mazaheri, Mohammad Hassan Karimpour   +2 more
doaj   +1 more source