Results 11 to 20 of about 7,506,517 (292)
First in situ Re-Os dating of molybdenite by LA-ICP-MS/MS [PDF]
Mineralium Deposita, 2019 Conventional dating of molybdenite (187Re-187Os) provides one of few options for direct dating of sulfide mineralization. Unfortunately, in situ dating of molybdenite is considered unreliable due to intra-granular decoupling of 187Re-187Os. In this study, we developed a new analytical protocol for studies of micron- to grain scale 187Re-187Os ...
K. Johan Hogmalm +3 more
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, 2013 Le géochronomètre Re-Os a fait ses preuves dans son application aux huiles et bitumes pétroliers. Cependant, l’application de ce système sur les fluides pétroliers souffre d’un manque de compréhension de la géochimie pétrolière de Re et Os, des mécanismes de remise à zéro du géochronomètre et par conséquent des évènements réellement datés.
Mahdaoui, Fatima
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Uranium-Lead dating of hominid fossil sites in South Africa [PDF]
, 2005 Discoveries of hominid, or apeman, fossils in the twentieth century have brought human evolution into the scientific spotlight. It is important that ages are assigned to such hominids so that their place in human evolution can be established.
Walker, Joanne
core +7 more sources
Re-Os geochronology for sulfides and organic-rich sediments. [PDF]
Natl Sci RevRhenium and osmium are both siderophilic and chalcophilic, exhibiting a strong affinity for organic-rich materials. This makes the Re-Os chronometer a valuable complement to geochronometers based on lithophile elements.
Li Y, Glorie S, Selby D.
europepmc +2 more sources
Re-Os dating of the Raobazhai ultramafic massif in North Dabie
Chinese Science Bulletin, 2004 The ultramafic massif at Raobazhai in North Dabie is located in the suture zone between the Yangtze craton and North China craton. The Re-Os isotope compositions of the massif are used to decipher the origin and tectonics of the ultramafic rocks involved in continental subduction and exhumation.
Yongbin Jin +4 more
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Radiometric dating of marine-influenced coal using Re–Os geochronology [PDF]
Earth and Planetary Science Letters, 2015 Abstract Coal deposits are integral to understanding the structural evolution and thermal history of sedimentary basins and correlating contemporeous estuarine and fluvial delatic strata with marine sections. While marine shales may readily lend themselves to Re–Os dating due to the dominance of hydrogenous Re and Os, the lack of a chronometer for ...
Gyana Ranjan Tripathy +4 more
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Frontiers in Earth Science, 2023 The Shanagen hydrothermal vein-type Mo deposit belongs to the Derbugan metallogenic belt, which is located in the Ergun block, NE China. The Mo mineralization is mainly developed in sericitized quartz siltstone around alkali-feldspar granite.
Yunxia Wu +9 more
doaj +1 more source
The way to overcome the difficulty in Re-Os dating of molybdenite.
Proceedings of the Japan Academy, Series B, 1990 When a molybdenite was dissolved and treated by the conventional chemical procedure, it was difficult to achieve the isotopic equilibrium between the 187Os radiogenically accumulated in the molybdenite and“common”Os added as a kind of internal standard, even after chemically complete decomposition. It is evident that this isotopic disequilibrium effect
SUZUKI, Katsuhiko, MASUDA, Akimasa
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Re-Os (ICP-MS) DATING OF MARINE OIL SHALE IN THE QIANGTANG BASIN, NORTHERN TIBET, CHINA; pp. 47-55 [PDF]
Oil Shale, 2008 Marine oil shale from the Shenglihe oil shale section in the Qiangtang basin, northern Tibet, China, was dated by the Re-Os technique using Carius Tube digestion, Os distillation, Re extraction by acetone and ICP-MS measureÂment.
FU XIUGEN +6 more
doaj +1 more source
Yankuang ceshi, 2017 Graphite has relatively high Re and Os contents and is an ideal mineral for Re-Os isotope dating. However, there are few studies on Re-Os dating of graphite.
LI Chao +5 more
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