Results 11 to 20 of about 14,101 (268)

Re‐Os isotope systematics in carbonates from Serpent Mound, Ohio: Implications for Re‐Os dating of crustal rocks and the osmium isotopic composition of Ordovician seawater [PDF]

Geochemistry, Geophysics, Geosystems, 2004
Eleven core samples of Ordovician carbonates and shale from within and nearby the Serpent Mound (Ohio) cryptoexplosion structure were analyzed for Re‐Os isotopes. Whole‐rock samples span a large range in measured 187Os/188Os (0.714 to 6.083), and exhibit a linear correlation of 187Os/188Os with 187Re/188Os.
Elisabeth Widom, Sarah J. Gaddis, Norman E. Wells   +2 more
openaire   +1 more source

The Constraints of Carbonaceous Mudstone Re-Os and Detrital Zircons U-Pb Isotopic Dating on the Diagenetic and Metallogenic Ages from the Dabaoshan Copper Deposit in Guangdong Province

Yankuang ceshi, 2022
BACKGROUND With the development of high-precision negative thermal ionization mass spectrometry (N-TIMS) technology, Re-Os isotopic dating of carbonaceous mudstone is more and more widely used in the determination of sedimentary age. The controversy over
LIU Wusheng, ZHAO Hong, ZHAO Ruyi, QIN Jinhua, ZHANG Xiong, JIANG Jinchang, ZHAO Chenhui, LI Tingjie, WANG Chenghui   +8 more
doaj   +1 more source

Supplemental Material: Protogenetic sulfide inclusions in diamonds date the diamond formation event using Re-Os isotopes [PDF]

, 2021
Description of Rietveld refinements and composition of the Mss, reciprocal crystallographic orientations and Os diffusion model, unit-cell parameters of pyrrhotite single crystals, and orientation matrices for both inclusions and hosts.<br>
et al., Martha Pamato
openaire   +2 more sources

Accurate Determination of the Age of the Carbonaceous Mudstone of the Ordovician-Silurian Boundary in Zheng'an County, Guizhou Province by Re-Os Isotope Dating Method and Its Application in Paleoenvironmental Inversion

Yankuang ceshi, 2020
BACKGROUND Organic-rich sedimentary rocks of the Wufeng-Longmaxi Formation are widely developed in the Ordovician-Silurian boundary of the Upper Yangtze platform in China, which is rich in shale gas resources. Using the Re-Os isotope system to study this
LI Xin-wei, LI Chao, ZHOU Li-min, ZHAO Hong   +3 more
doaj   +1 more source

Genesis of the Shibaogou Mo–Pb–Zn deposit in the Luanchuan ore district, China: Constraints from geochronology, fluid inclusion, and H–O–S–Pb isotopes

Frontiers in Earth Science, 2023
The Shibaogou deposit is located in the Luanchuan ore district within the East Qinling orogenic belt (EQOB), central China, which is a newly discovered Mo–Pb–Zn skarn deposit.
Yunchou Xu, Gongwen Wang, Gongwen Wang, Gongwen Wang, Meng Gao, Wangdong Yang, Shuren Yang, Hui Yun, Peijian Wu, Nana Guo, Yantao Feng   +10 more
doaj   +1 more source

Heterogeneous Os isotope compositions in the Kalatongke sulfide deposit, NW China: the role of crustal contamination [PDF]

, 2012
Re-Os isotope compositions of mantle-derived magmas are highly sensitive to crustal contamination because the crust and mantle have very different Os isotope compositions.
Gao, JF, Lightfoot, PC, Qu, W, Zhou, MF
core   +1 more source

The possible existence of Hs in nature from a geochemical point of view [PDF]

, 2006
A hypothesis of the existence of a long-lived isotope 271Hs in natural molybdenites and osmirides is considered from a geochemical point of view. It is shown that the presence of Hs in these minerals can be explained only by making an additional ad hoc ...
A. D. Brandon, A. D. Smith, A. Meibom, A. Meibom, A. Narinov, A. Sobiczewski, A. V. Ivanov, A. V. Ivanov, Ch. E. Düllmann, D. L. Anderson, D. Selby, G. R. Foulger, G. Royer, H. J. Stein, H. J. Stein, H. Meier, J. G. Raith, J. M. Bird, J. Morris, J. P. Davidson, J. V. Kratz, K. A. Petrzhak, R. D. Cherry, R. Eichler, R. Gentry, R. J. Walker, R. J. Walker, S. Hofmann, S. V. Balyshev, T. V. Galashvili, V. P. Perelygin, W. M. White, Yu. Oganessian   +32 more
core   +2 more sources

Study on the Re-Os Isotope Composition of Graphite from the Lutang Graphite Deposit in Hunan Province

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, WANG Deng-hong, ZHOU Li-min, ZHAO Hong, LI Xin-wei, QU Wen-jun   +5 more
doaj   +1 more source

Re-Os dating, and Pb-H-O isotope characteristics, of the Abra Cu-Ag-Pb-Au polymetallic deposit in Western Australia [PDF]

Acta Geochimica, 2021
AbstractThe Abra deposit, a large lead-silver-copper–gold polymetallic deposit in Western Australia, is located at the eastern of the metallogenic belt of the Jillawarra basin in the Bangemall basin. The 4th to the 6th rock section of the Irrigully Group of Edmund Series are the principal ore-host strata, composed mainly of sandstone and fine sandstone.
Chaozhuang Xi, Mianping Zheng, Liang He, Haodong Xia   +3 more
openaire   +1 more source

Is the Mesolithic-Neolithic Subsistence Dichotomy Real? New Stable Isotope Evidence from the Danube Gorges [PDF]

, 2004
The article presents new results of stable isotope analyses made on animal and human bones from the Mesolithic-early Neolithic sites of Lepenski Vir and Vlasac in the Danube Gorges of the Balkans.
Borić, Dušan, Grupe, Gisela, Mikić, Živko, Peters, Joris   +3 more
core   +1 more source