Results 61 to 70 of about 7,773,615 (174)
Re-os isotope constraints on the age of the Lithospheric mantle beneath western Greenland. [PDF]
, 2007 Alkaline magmatic activity across Western Greenland (W.G.) provides a record of lithosphere evolution over the last 600 Ma. Ultra Mafic Lamprophyre (UML) magmatism in particular has erupted an exceptional inventory of mantle xenoliths allowing a detailed
Webb, Michelle
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Concordant ages for the giant Kipushi base metal deposit (DR Congo) from direct Rb-Sr and Re-Os dating of sulfides [PDF]
, 2018 We report concordant ages of 451.1 ± 6.0 and 450.5 ± 3.4Ma from direct Rb-Sr and Re-Os isochron dating, respectively, of ore-stage Zn-Cu-Ge sulfides, including sphalerite for the giant carbonate-hosted Kipushi base metal (+Ge) deposit in the ...
Melcher, Frank +2 more
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Re-OS and Pb isotope ratios of sediments from Saanich Inlet, Western Canada
, 2006 Re-Os and Pb-Pb isotopic analysis of reduced varved sediments cored in the deeper basin of Saanich Inlet (B.C.) are presented. From core top to 61 cm down-core, spanning approximately the last 100 yrs of sedimentation, 187Os/188Os ratio and Os ...
Poirier, André +1 more
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Ore Geology Reviews, 2019 Abstract The Ashele Cu-Zn deposit, an important volcanogenic massive sulfide (VMS) deposit, is located in the centre of the Ashele volcano-sedimentary basin of the Altay metallogenic belt, North Xinjiang, NW China. The No. 1 orebody is located between the roof basalt and the base tuff. The roof basalt yielded a zircon U-Pb age of 342 ± 4.6 Ma (MSWD =
Ling-ling Gao +4 more
openaire +1 more source
Os isotopes in SNC meteorites and their implications to the early evolution of Mars and Earth [PDF]
, 1993 A new development on the measurement of the Os isotopic composition by mass spectrometry using negative ions opened a new field of applications. The Re-Os systematic provides time information on the differentiation of the nobel metals.
Wanke, H. +3 more
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, 2023 Re-Os isotope analyses were conducted on solid bitumens from Lower Cambrian Longwangmiao and topmost Ediacaran Dengying formations in Anyue gas-field, Central Sichuan basin to date the main gas accumulation.
Liu, Dawei +13 more
core +1 more source
Rhenium-osmium geochronology and geochemistry of ancient lacustrine sedimentary and petroleum systems [PDF]
, 2013 The Re-Os geochronometer is a valuable tool able to provide precise depositional ages of marine organic-rich sedimentary rocks as well as the generation age of hydrocarbons. In addition, Os isotopes afford vital insights into seawater Os fluctuations and
CUMMING, VIVIEN,MARY
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, 2020 We document detailed petrological, mineralogical, geochronological, and element and isotope geochemical data, including whole-rock major and trace element and Sr–Nd isotopic compositions, zircon U–Pb and molybdenite Re–Os dating, and the Hf and Pb ...
Zeng, Qingdong +1 more
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Assessment of oxygen plasma ashing as a pre-treatment for radiocarbon dating [PDF]
, 2009 This study investigates the potential of low-temperature oxygen plasma ashing as a technique for decontaminating charcoal and wood samples prior to radiocarbon dating.
Bird, M.I. +12 more
core +1 more source
Re-187-Os-187, Pt-190-Os-186 Isotopic and Highly Siderophile Element Systematics of Group IVA Irons [PDF]
, 2005 We have recently completed Re-187-Os-187 and Pt-190-Os-186 isotopic and elemental studies of the two largest magmatic iron meteorite groups, IIAB and IIIAB [1].
Ash, R. D. +4 more
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