Results 11 to 20 of about 7,803,272 (294)

Defining the Potential of Nanoscale Re-Os Isotope Systematics Using Atom Probe Microscopy [PDF]

Geostandards and Geoanalytical Research, 2018
Atom probe microscopy (APM) is a relatively new in situ tool for measuring isotope fractions from nanoscale volumes (
Steven Reddy (23290585), B. Schaefer (9011780), L. Daly (9008576), Denis Fougerouse (23285311), S. Ringer (23322772), William Rickard (23290588), A. La Fontaine (23486806), D. Schwander (23486809), Lucy Forman (23285065), David Saxey (23290591), Phil Bland (23302444), Svetlana Tessalina (23284777), J. Cairney (23357110)   +12 more
core   +6 more sources

Advances in the analytical methods of metal sulfide Re-Os isotope dating

Acta Petrologica Sinica, 2022
Over the past 30 years, the analytic technique of Re-Os isotope of geological samples has been developed and improved constantly, including sample digestion, chemical separation, mass spectrometry determination and micro region analysis methods, and Re ...
Li Jie, Wang GuiQin, Sun ShengLing, Xu JiFeng, null null   +4 more
core   +2 more sources

Re-Os geochronology and coupled Os-Sr isotope constraints on the Sturtian snowball Earth [PDF]

Proceedings of the National Academy of Sciences, 2013
After nearly a billion years with no evidence for glaciation, ice advanced to equatorial latitudes at least twice between 717 and 635 Mya. Although the initiation mechanism of these Neoproterozoic Snowball Earth events has remained a mystery, the broad ...
Hallmann, C., Hallman, Christian, Hallmann, Christian, Strauss, Justin V., Dudás, F.Ö, Macdonald, F., Strauss, J., Macdonald, Francis, Dudás, Francis, Selby, David, Rooney, A., Rooney, Alan, Selby, D., Strauss, J.V., Rooney, Alan D., Dudas, F., Rooney, A.D., Macdonald, Francis A., Dudas, Francis O., Strauss, Justin   +19 more
core   +9 more sources

A Re-Os isotope study of ultramafic xenoliths from the Matsoku kimberlite

Earth and Planetary Science Letters, 1997
Ultramafic xenoliths erupted within the Matsoku kimberlite pipe display a range of petrographic features that have been interpreted as the products of melt injection or infiltration and metasomatic processes. We have analysed Re and Os concentrations and
Ellam, R.M., Harte, B., Olive, V., V. Olive, R.M. Ellam, B. Harte   +5 more
core   +2 more sources

Microwave Digestion for Re-Os Isotope Measurements in Geological Samples

Atomic Spectroscopy
In this study, we present the novel use of a microwave digestion system (CEM BLADE) to digest geological materials for Re-Os isotopic analysis. This technique employs quartz digestion vessels that are easy to clean and reusable, avoid the complicated ...
Mao, Guohua, Bao, Houyin, Xu, Jifeng, Li, Jie, Guo, Jiakai   +4 more
core   +2 more sources

Mantle Sulfides and their Role in Re–Os and Pb Isotope Geochronology [PDF]

Reviews in Mineralogy and Geochemistry, 2015
Mantle sulfides (Fe–Ni–Cu-rich base metal sulfides or BMS; Fig. 1) play a crucial role in the distribution of Re, Os, and Pb in mantle rocks and are thus fundamental to obtaining absolute ages by direct geochronology using the Re–Os and Pb–Pb isotope systems on mantle samples.
Harvey, Jason, Warren, Jessica M., Shirey, Steven B.   +2 more
openaire   +5 more sources

Unraveling the origin of the Andean IOCG clan: A Re-Os isotope approach [PDF]

Ore Geology Reviews, 2017
The Andean IOCG clan in the Coastal Cordillera of northern Chile, comprises the iron oxide-Cu-Au sensu stricto, the iron oxide-apatite (IOA), and the stratabound Cu(− Ag) deposits, also known as Manto-type Cu(− Ag) deposits. IOCGs and Manto-type deposits constitute the second source of copper in Chile, after porphyry Cu-Mo systems, whereas IOAs are an ...
Barra Pantoja, Fernando, Reich Morales, Martín, Selby, David, Rojas, Paula, Simon, Adam C., Salazar, Eduardo, Palma, Gisella   +6 more
openaire   +7 more sources

Precise Re–Os ages of organic-rich mudrocks and the Os isotope composition of Jurassic seawater [PDF]

, 1999
Rhenium and osmium isotope and abundance data have been obtained on precisely-located samples from three suites of immature, organic-rich mudrocks from Jurassic coastal outcrops in England, The data provide accurate whole-rode ages of 207 +/- 12 Ma, 181 +
Hawkesworth, Chris, Angela L Coe, Bartlett, J M, Anthony S Cohen, Coe, A L, Bartlett, Jessica M., Hawkesworth, Christopher J., Cohen, Anthony S., Coe, Angela L., Jessica M Bartlett, Chris J Hawkesworth, Cohen, A S   +11 more
core   +3 more sources

Re-Os isotope geochemistry of komatiite-hosted Ni-Cu-PGE deposits in Finland [PDF]

, 2020
We have studied the Re-Os isotope systematics of komatiite-related Ni-Cu-PGE sulfide deposits in Finland, including the Archean Ruossakero Ni-(Cu), Vaara Ni-(Cu-PGE), Tainiovaara Ni-(Cu-PGE) deposits and Ni-PGE sulfide mineralization related to a dunitic
Li, C., Moilanen, M., Törmänen, T., Yang, S.-H., Konnunaho, J., Zhou, L.M., Hanski, E.   +6 more
core   +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