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U/Pb zircon ages constrain the architecture of the ultrahigh-pressure Qinling–Dabie Orogen, China
New SHRIMP and TIMS zircon ages, 40Ar/39Ar ages, and eclogite locations contribute significantly to our understanding of the ultrahigh-pressure Dabie Shan. (1) The geographic extent of the YangtzeExpand
Rare earth element chemistry of zircon and its use as a provenance indicator
Sedimentary mineral assemblages commonly contain detrital zircon crystals as part of the heavy-mineral fraction. Age spectra determined by U-Pb isotopic analysis of single zircon crystals within aExpand
Tectonics of the Qinling (Central China): tectonostratigraphy, geochronology, and deformation history
Abstract The Qinling orogen preserves a record of late mid-Proterozoic to Cenozoic tectonism in central China. High-pressure metamorphism and ophiolite emplacement (Songshugou ophiolite) assembledExpand
Exhumation of ultrahigh‐pressure continental crust in east central China: Late Triassic‐Early Jurassic tectonic unroofing
The largest tract of ultrahigh-pressure rocks, the Dabie-Hong'an area of China, was exhumed from 125 km depth by a combination of normal-sense shear from beneath the hanging wall Sino-Korean craton,Expand
Geochronology and geochemistry of a Mesozoic magmatic arc system, Fiordland, New Zealand
The Median Tectonic Zone in Eastern Fiordland, SW New Zealand, comprises a tectonically disrupted belt of Mesozoic magmatic arc rocks related to subduction along the palaeo-Pacific margin ofExpand
U-Pb chronology of the Solar System's oldest solids with variable 238 U/ 235 U
Abstract Accurate determination of the absolute ages of the oldest Solar System objects — chondrules and Ca–Al-rich inclusions (CAIs), requires knowledge of their 238U/235U ratios. This ratio wasExpand
Ion microprobe identification of 4,100–4,200 Myr-old terrestrial zircons
We report here the existence of detrital zircons from Western Australia which are far older than any known terrestrial rocks. They are from quartzites at Mt Narryer (Fig. 1), a locality which hasExpand
Geochronology and geochemistry of pre-Jurassic superterranes in Marie Byrd Land, Antarctica
Marie Byrd Land, Antarctica, is a major part of the proto-Pacific supercontinental margin. On the basis of new geochronological and geochemical data relating to its pre-Jurassic evolution, Marie ByrdExpand
Exhumation of the ultrahigh‐pressure continental crust in east central China: Cretaceous and Cenozoic unroofing and the Tan‐Lu fault
The orogenic architecture of the world's largest ultrahigh-pressure exposure, the Hong'an-Dabie Mountains of the Triassic Qinling-Dabie orogenic belt, is dominated by Cretaceous and CenozoicExpand
U-Pb, Th-Pb and Ar-Ar geochronology from the southern Sierras Pampeanas, Argentina: implications for the Palaeozoic tectonic evolution of the western Gondwana margin
Abstract New SHRIMP zircon and monazite 206Pb/238U and 208Pb/232Th ages on structurally controlled units and 40Ar-39Ar step-heating ages from shear fabrics, define three distinct regional tectonicExpand