Results 101 to 110 of about 21,763 (249)

Zircon U-Pb dating of Shuiquangou alkaline complex intrusives, northwestern Hebei Province

Chinese Science Bulletin, 1997
SUPER large gold deposits related to alkaline intrusions have been found in America, Canada, Australia, Papua New Guinea and elsewhere.Dongping gold deposit with superlarge potentialhas also been found in Shuiquangou alkaline complex intrusions, northwestern Hebei Province, China.
Cehui Mo, Huaying Liang, Xiuzhang Wang, Jingping Cheng, Huimin Li   +4 more
openaire   +1 more source

Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland [PDF]

, 2015
Shetland occupies a unique central location within the North Atlantic Caledonides. Thirty-three new high-precision Rb–Sr mineral ages indicate a polyorogenic history.
Bird, A. F., Strachan, R. A., Thirlwall, M. F., Walker, S.   +3 more
core   +3 more sources

Extensional faulting on Tinos island, Aegean sea, Greece: How many detachments? [PDF]

, 2007
Zircon and apatite fission track (ZFT and AFT) and (U-Th)/He, 40Ar/39Ar hornblende, and U-Pb zircon ages from the granites of Tinos Island in the Aegean Sea, Greece, suggest, together with published ZFT data, that there are three extensional detachments ...
Altherr, Andrew Carter, Avigad, Avigad, Ballard, Barbarand, Black, Boven, Brichau, Brichau, Bröcker, Bröcker, Clauer, Coulson, Dahl, Daniel Stockli, Donelick, Dürr, Esser, Farley, Faure, Forster, Foster, Fytikas, Galbraith, Gessner, Godfriaux, Green, Hejl, Hourigan, House, Hurford, Hurford, John, Kelley, Ketcham, Ketcham, Kumerics, Lee, Lister, Maluski, Maurice Brunel, Mehl, Melidonis, Miller, Patriat, Patrick Monié, Patzak, Pearce, Rahn, Regenauer-Lieb, Reiners, Ring, Ring, Ring, Ring, Ring, Ring, Ring, Ring, Robert Bolhar, Robertson, Samson, Schmädicke, Shaked, Stern, Stockli, Stockli, Stéphanie Brichau, Stöckhert, Tagami, Thomson, Tomaschek, Uwe Ring, Villa, Watson, Weidmann, Wijbrans, York, Zeffren   +79 more
core   +3 more sources

U-Pb Ages of Lunar Apatites [PDF]

, 2006
Apatite is one of the minerals that is rarely utilized in U-Pb geochronology, compared to some other U-rich accessory phases. Relatively low U concentration, commonly high proportion of common Pb and low closure temperature of U-Pb system of apatite ...
Meyer, Charles, Nemchin, A. A., Pidgeon, R. T., Vaughan, J.   +3 more
core   +1 more source

Neoproterozoic subduction along the Ailaoshan zone, South China : geochronological and geochemical evidence from amphibolite [PDF]

, 2014
This study was supported by China Natural Science Foundation (41190073 and 41372198), National Basic Research Program of China (2014CB440901) and Natural Environment Research Council (grant NE/J021822/1).Lenses of amphibolites occur along the Ailaoshan ...
Cai, Yongfeng, Cawood, Peter A., Fan, Weiming, Liu, Huichuan, Wang, Yuejun, Xing, Xiaowan, Zhang, Yuzhi   +6 more
core   +1 more source

Systematics in the Pb^(208)-Th^(232), Pb^(207)-U^(235), and Pb^(206)-U^(238) Systems [PDF]

, 1966
In a study of cogenetic zircons it was found that the measured Pb^(208)/Th^(232) and Pb^(207)/U^(235) ratios formed a linear array in the corresponding coupled Pb-U-Th evolution diagram, which has an upper intersection on the concordia curve at the same ...
Steiger, Rudolf H., Wasserburg, G. J.
core   +1 more source

High Spatial Resolution U-Pb Dating of Low-Uranium Calcite Using LA-MC-ICP-MS

Yankuang ceshi
The combination of carbonate minerals with the U-Pb isotope dating system provides direct temporal constraints for geoscientific applications. LA-MC-ICP-MS with its high sensitivity and accuracy, has been successfully applied to the high spatial ...
Chenxi ZHANG, Yuxin XIONG, Jiali FU, Wei ZHAO, Lei SHU, Zengsheng LI, Jun XU, Changxiang ZHOU, Fei HONG   +8 more
doaj   +1 more source

Mineralogy of the inclusions and age of zircon from granite basement of Verkhnerechensk area (Yamal peninsula)

Литосфера, 2017
The study of minerals-prisoners in accessory zircons is gradually evolving into an important geological-petrological task. Such a study can show not only the earliest mineral rock association, but also evaluate the “sealed” mineral paragenesis of zircon,
Yuriy V. Erokhin, Kirill S. Ivanov, Victor A. Koroteev, Vera V. Khiller   +3 more
doaj   +1 more source

Anomalous supply of bioessential molybdenum in mid-Proterozoic surface environments [PDF]

, 2016
We are grateful to A. Sandison and W. Thayalon for skilled technical support, and Mike Porter and an anonymous reviewer, who helped to clarify the manuscript.Peer ...
Lindgren, Paula, Parnell, John
core   +1 more source

From ID-TIMS U-Pb dating of single monazite grain to APT-nanogeochronology: application to the UHT granulites of Andriamena (North-Central Madagascar)

BSGF - Earth Sciences Bulletin
The causes of U-Pb isotopic discordance documented by Paquette et al. (2004) in monazite grains from the ultra-high temperature (UHT) granulite of the Andriamena unit of Madagascar are re-evaluated in the light of nanoscale crystal-chemical ...
Turuani M.J., Seydoux-Guillaume A.-M., Laurent A.T., Fougerouse D., Harley S.L., Reddy S.M., Goncalves P., Saxey D.W., Michaud J., Montel J.-M., Nicollet C., Paquette J.-L.   +11 more
doaj   +1 more source