Re os dating arsenopyrite
This method has been applied to better understand the origins of global Oceanic Anoxic Events (OAEs), the timing of shale deposition and correlation in Precambrian sedimentary basins and this rise of oxygen on Earth.
Re-Os isotopes in natural hydrocarbons is the third major research theme of the laboratory, again approaching this new field from both a systematic evaluation and application perspective.
The data also suggest that significant tectonic deformation of the Belt metasediments in and around the district, which predates the emplacement of the Ag-Pb-Zn veins, was associated with an orogenic event older than 1200 Ma, likely the 1.3 Ga East Kootenay orogeny, and not with the accretion of the Wallowa-Seven Devils terrane in the Early Cretaceous. 26--Booth# 17Economic Geology (Posters): All subjects, including IOCG and Porphyry Copper Deposits; Epithermal-Hot Springs; Non-Sulfide Ores; Gold; Magmas and Volatiles; and Copper in Asia Oregon Convention Center: Hall A AM- PM, Sunday, 18 October 2009Geological Society of America Abstracts with Programs, Vol. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes.
Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information.
The classification as Carlin-like for these deposits is based on their similarity with the deposits in the Carlin gold province of Nevada, along the North American craton margin ( Cline et al., 2005 ).
More than 200 ore deposits and occurrences, with mineral reserves/resources and ore grade mostly ranging from 1 to 167 tonnes and 1 to 20 g/t, respectively, have been reported from this region in southwestern China.
Furthermore, the result also implies that the age of the Gaixian Formation in the Maoling district is older than 2316±40 Ma.
Here we report the first Re-Os geochronological data on arsenopyrite (aspy) extracted from a quartz-siderite vein from the 4000 ft. Arsenopyrite formed during the late stages of massive siderite precipitation — the main gangue mineral of the Ag-rich veins.
, (1) Isobrine Solutions, #4-341, 10230 Jasper Ave, Edmonton, AB T5J 4P6, Canada, (2) Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada, [email protected], (3) 819 W.