Results 201 to 210 of about 1,938 (228)
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Gondwana Research, 2014
Abstract The Simao block, which is the northern extension of the Indochina block, and the Yangtze block were amalgamated by the closure of a Paleo-Tethys branch ocean commonly referred to as the Ailaoshan ocean. The exact location of the suture between these two continental blocks has been contested.
Qingfei Wang +5 more
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Abstract The Simao block, which is the northern extension of the Indochina block, and the Yangtze block were amalgamated by the closure of a Paleo-Tethys branch ocean commonly referred to as the Ailaoshan ocean. The exact location of the suture between these two continental blocks has been contested.
Qingfei Wang +5 more
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Geological Magazine, 2014
AbstractThe Central Asian Orogenic Belt is an accretionary orogen with many distinct terranes including the Chinese Central Tianshan, whose Precambrian tectonic affinity is not yet clearly known. We present Precambrian age spectra of inherited/xenocrystic zircons from magmatic rocks in the Chinese Central Tianshan, collected from published papers.
XUXUAN MA +3 more
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AbstractThe Central Asian Orogenic Belt is an accretionary orogen with many distinct terranes including the Chinese Central Tianshan, whose Precambrian tectonic affinity is not yet clearly known. We present Precambrian age spectra of inherited/xenocrystic zircons from magmatic rocks in the Chinese Central Tianshan, collected from published papers.
XUXUAN MA +3 more
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Geological Society of America Bulletin, 1977
Zircon dates from metavolcanic and metaplutonic rocks of the central Appalachian Piedmont in Maryland and Virginia are important for interpreting the age of the Glenarm Series. Compilation and evaluation of available data from this area suggest that Piedmont zircons may have inherited a component of older radiogenic lead in seed crystals, which were ...
MICHAEL W. HIGGINS +3 more
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Zircon dates from metavolcanic and metaplutonic rocks of the central Appalachian Piedmont in Maryland and Virginia are important for interpreting the age of the Glenarm Series. Compilation and evaluation of available data from this area suggest that Piedmont zircons may have inherited a component of older radiogenic lead in seed crystals, which were ...
MICHAEL W. HIGGINS +3 more
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Journal of Geophysical Research: Solid Earth, 1990
Ion microprobe U‐Th‐Pb dating zircons from four mafic inclusions from the Palaeozoic granites of the Glenbog and Blue Gum suites, Bega Batholith, shows that while most of the zircons are probably magmatic, the cores of some are premagmatic. The mean 206Pb/238U ages of the magmatic zircons are 412±3 Ma and 414±2 Ma for two inclusions from the Glenbog ...
Y. D. Chen, I. S. Williams
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Ion microprobe U‐Th‐Pb dating zircons from four mafic inclusions from the Palaeozoic granites of the Glenbog and Blue Gum suites, Bega Batholith, shows that while most of the zircons are probably magmatic, the cores of some are premagmatic. The mean 206Pb/238U ages of the magmatic zircons are 412±3 Ma and 414±2 Ma for two inclusions from the Glenbog ...
Y. D. Chen, I. S. Williams
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Earth and Planetary Science Letters, 1996
Abstract The paper presents results from a UPb isotopic investigation of zircon and titanite from three phases of the Archean Sioux Lookout gneiss complex, at the margin of the gneissic plutonic Winnipeg River Subprovince (WRS) of the Superior Province.
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Abstract The paper presents results from a UPb isotopic investigation of zircon and titanite from three phases of the Archean Sioux Lookout gneiss complex, at the margin of the gneissic plutonic Winnipeg River Subprovince (WRS) of the Superior Province.
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Zircons: Age, Thermobarometry, and Source Inheritance
2021Dustin Trail +2 more
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Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 1996
ABSTRACT:Finite difference numerical simulations were used to characterise the rates of diffusion-controlled dissolution and growth of zircon in melts of granitic composition under geologically realistic conditions. The simulations incorporated known solubility and Zr diffusivity relationships for melts containing 3 wt% dissolved H2O and were carried ...
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ABSTRACT:Finite difference numerical simulations were used to characterise the rates of diffusion-controlled dissolution and growth of zircon in melts of granitic composition under geologically realistic conditions. The simulations incorporated known solubility and Zr diffusivity relationships for melts containing 3 wt% dissolved H2O and were carried ...
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ZIRCON INHERITANCE IN LYON MOUNTAIN GRANITE: EVIDENCE FROM ZIRCON SATURATION TEMPERATURES
Geological Society of America Abstracts with Programs, 2016M.E. Bickford +2 more
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