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Radioactive Decay and Rock Ages
The question of the age of the Earth and the Universe was long the subject of contentious discussion. Towards the end of the eighteenth century, it...
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Application of Pb isotopes to the identification of geogenic and anthropogenic sources in groundwaters and surface waters in a world-class coal deposit area and associated thermoelectric power plant in Candiota, southern Brazil
The use of lead isotopes has been widely applied to identify contamination sources in nature. The present study aims to investigate the Pb isotope...
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Multiple thermal events recorded in the Acasta Gneiss Complex: Evidence from in-situ dating of zircon, titanite, and apatite
In-situ dating of the zircons, titanites, and apatites in the rock fragments of approximately 1 cm 2 in size from the Acasta Gneiss Complex was...
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Radioaktiver Zerfall und das Alter von Gesteinen
Die Frage, wie alt Erde und Kosmos sind, wurde sehr lange kontrovers diskutiert. Gegen Ende des 18. Jahrhunderts hatte man verstanden, dass Schichten...
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Hydrothermal Uranium Mineralization in the Tuyukan Ore Field (Northern Transbaikalia): Time of Precipitation of the Pitchblende and Age of the Uranium Source
AbstractBased on the study of local volumes of minerals using the classical methods of isotope dilution and thermal ionization mass spectrometry...
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Standardization production of Qi Knives: A comprehensive analysis of the minting remains of knife money unearthed in ancient Linzi in the late Warring states period
Our studies focus on the production background of early standardized coinage in Qi state before Qin empire’s unification of currency. These mold...
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The Oldest Island-Arc Granitoids of the Chingiz–Tarbagatai Region, Eastern Kazakhstan: Substantiation of the Age and Peculiarities of Composition
AbstractThe oldest granitoids of the Kan–Chingiz Complex with quartz diorites, granodiorites, plagiogranites, and granites are dated for the first...
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New Data on the Geological Structure and Precambrian Evolution of the Mountain Framework of the Denman Glacier Western Side (East Antarctica): First Paleoarchean Age for Plagiogneisses
AbstractThe mountain framework of the Denman Glacier is a poorly explored area. However, it is a key region of East Antarctica in the context of...
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Lead Components of Bulk Sediments from Dahu Swamp in Nanling Mountains (South China): Implications for the Climatic and Environmental Changes Since the Last Deglaciation
AbstractWe show, from a 16.6 ka record of lead isotopes from a core sediments in Dahu Swamp in eastern Nanling Mountains, that the chemical...
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Calcite U-Pb Geochronology Revealing Late Ediacaran–Early Paleozoic Hydrothermal Alteration in the Stenian-Tonian Carbonate of Northeastern North China Craton
Two calcite LA-ICP-MS U-Pb ages of 534 ± 26 Ma (MSWD = 5.9) and 456 ± 43 Ma (MSWD = 3.8) were obtained from the Nanfen Formation, **he Group in the...
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Geochronology and Geochemistry of Mesozoic Granites in the North Qilian Shan: Implications for Petrogenesis and Tectonic Setting
AbstractThis paper documents the zircon U–Pb ages, whole-rock geochemistry, and Sr–Nd–Pb isotopes of the Mesozoic granites in the central part of the...
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Hawaiian postshield volcanism over the past 55 million years
The Hawaiian-Emperor chain, the surface expression of the Hawaiian mantle plume which has been active for at least 81 Ma, is divided into the Emperor...
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Sources of the Upper Proterozoic Terrigenous Deposits in the Northwestern Part of the Argun Massif, Central Asian Fold Belt: Results of U–Th–Pb Geochronological and Sm–Nd Isotopic-Geochemical Studies
Abstract —The publication presents the results of geochemical, isotopic-geochemical (Sm–Nd) and isotopic-geochronological (U–Th–Pb) studies of...
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U–Pb Age Dating for Carbonate Sequences: An Example from Late Neoproterozoic Kharus Formation, Al Jabal Al-Akhdar, Northern Oman
Outcrops of the late Neoproterozoic carbonate Kharus Formation are time-equivalent to the subsurface Buah Formation in Oman Interior Basin. Kharus...
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U–Pb ID-TIMS Age of Rutile from the North Muya Block Eclogites (Northeastern Transbaikal Area) as a Tracer of the Duration for Exhumation of the Continental Lithosphere
AbstractRutile, an abundant mineral phase of high-grade rocks, is used as a tracer of lithospheric evolution for deep zones of orogenic belts. This...
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Sandy Sediments in the Tokko Basin of the Baikal Rift Zone: Sources and Provenance Areas
AbstractThe results of U–Th–Pb (LA–ICP–MS) geochronological studies of detrital zircon from the Quaternary sands of the Tokko Basin on the eastern...
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U–Pb (ID-TIMS) Age of Perovskite from Kimberlites of the Manchary Pipe (Khompu-Maya Kimberlite Field, Central Yakutia)
AbstractThe results of U–Pb Isotope Dilution Thermal Ionization Mass Spectrometry (ID-TIMS) geochronological studies of perovskite from kimberlite...
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Fluid inclusion and H-O-S-Pb isotope systematics of the Chayong Cu-polymetallic deposit, Sanjiang Metallogenic Belt, Qinghai Province, China
The Chayong Cu-polymetallic deposit is a recently discovered Cu-polymetallic deposit hosted in the Sanjiang Metallogenic Belt within the Tibetan...
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Changes in the Provenance of the Holocene Deposits of the Oga and Tsivolki Bays (Novaya Zemlya Archipelago) according to Sr, Nd, and Pb Isotope Data
AbstractThe paper considers Sr, Nd, and Pb isotope data obtained for two cores of bottom sediments taken in the Oga and Tsivolki bays of Severny...
