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Date: 2012
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/211189
Description: The Qaidam basin preserves a denser, stronger and seismically faster lower crust with a shallower Moho than other Tibetan terranes. Its northern part is widely believed to have undergone an early Pale ... More
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/199091
Description: Three leaching methods have been tested on garnet and clinopyroxene separates from Roberts Victor xenolithic eclogites, in an attempt to remove secondary materials and uncover the primary compositions ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/205034
Description: Cordilleran-type batholiths are built by prolonged arc activity along active continental margins and provide detailed magmatic records of the subduction system evolution. They complement the stratigra ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/180296
Description: Hf model ages yielded by rutiles in a garnet-rich lower-crustal granulite xenolith from the McBride Province and whole-rock Nd and Hf model ages for the plagioclase- and garnet-rich Chudleigh and McBr ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/211790
Description: A U-Pb/Hf-isotope study of >16,000 zircons shows that 70% of Earth's continental crust probably formed in Archean time, and much probably is >3 Ga old. The model ages (TMA ) of ca 500 low-Re/Os sulfid ... More
Date: 2012
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/213953
Description: A U-Pb/Hf-isotope study of >16,000 zircons from sources worldwide has demonstrated that at least 70% of Earth's continental crust probably formed in Archean time, and much probably is >3 Ga old. The m ... More
Date: 2012
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/211800
Description: Geochemical and geological evidence suggests that subduction processes, critical for the formation of many magmatic and hydrothermal ore deposits, have been active since about 3.9Ga. The emergence of ... More
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/213166
Description: The oldest rocks of the Cathaysia Block, South China, comprise the Badu Complex and Paleoproterozoic granites in the Wuyishan area (southern Zhejiang and northwestern Fujian Provinces). New zircon U–P ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/214245
Description: A worldwide database of over 16,000 combined U-Pb and Hf-isotope analyses of zircon, largely from detrital sources, has made it feasible to examine processes of crustal evolution on a global scale, an ... More
Date: 2011
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/164781
Description: The Cretaceous Prairie Creek lamproites of southern Arkansas intrude Proterozoic crust near the boundary between the 1.5-1.3 Ga Granite-Rhyolite Province and the 1.3-1.0 Ga Grenville orogen. They carr ... More
Reviewed: Reviewed
Date: 2011
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/151074
Description: New trace-element data of rutile in kimberlite-borne ~1.85 Ga eclogite and pyroxenite xenoliths from the central Slave craton, as well as ~110 Ma MARID xenoliths from the Kaapvaal craton, provide cons ... More
Reviewed: Reviewed
Date: 2011
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/170570
Description: Recent studies integrating mantle and lower crustal geochronology on xenolith samples, isotopic information from crustal zircons worldwide, and seismic tomographic imaging of deep lithosphere domains, ... More
Date: 2011
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/148308
Description: The water contents of nominally anhydrous minerals (NAMs) in 35 peridotite xenoliths have been analyzed by Fourier transform infrared spectrometry (FTIR). The xenoliths are hosted by Cenozoic volcanic ... More
Reviewed: Reviewed
Date: 2011
Subject Keyword: 040200 Geochemistry | 040300 Geology
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/134283
Description: How has the Earth's continental crust evolved? Most of our knowledge comes from surface exposures, but zircon xenocrysts in volcanic rocks can provide samples of deeper crustal levels. The U-Pb and Hf ... More
Reviewed: Reviewed
Date: 2011
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/150130
Description: Chromitite pods in the Mayarí-Cristal ophiolitic massif (eastern Cuba) were formed in the Late Cretaceous when island arc tholeiites and MORB-like back-arc basin basalts reacted with residual mantle p ... More
Reviewed: Reviewed