Zircon U-PB
Zircon U-Pb geochronology of the Great Valley Group : recalibrating the lower cretaceous time scale
... New radiometric ages from this study suggest that biologic and climatic events in the early Lower Cretaceous, particularly the Valanginian, may have occurred at faster rates than currently recognized: 2 zircon ...
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SHRIMP zircon U Pb dating of the mafic and felsic intrusive rocks of the Saza area in the Lupa goldfields, southwestern Tanzania: Implication for gold mineralization
... SHRIMP zircon U-Pb data are presented for the granodiorite and a mafic dyke that cross-cut the granodiorites in the Saza area of the LGF, with the aim of constraining the mafic and felsic magmatism ...
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New detrital zircon U Pb ages from BIF related metasediments in the Ntem Complex (Congo craton) of southern Cameroon, West Africa
... and Pb-Pb evapora- tion ages on whole rock and other geochronological data have confirmed the Archean to Paleoproterozoic age of the Congo and the São Francisco Cratons ...
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Neoproterozoic crustal growth of the Southern Yangtze Block : Geochemical and zircon U–Pb geochronological and Lu Hf isotopic evidence of Neoproterozoic diorite from the Ailaoshan zone
... Please cite this article as: Cai, Y., Wang, Y., Cawood, P.A., Zhang, Y., Zhang, A.,Neoproterozoic crustal growth of the Southern Yangtze Block: Geochemical and zircon UndashPb geochronological and Lu-Hf isotopic ...
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The metasedimentary Macururé Complex (Sergipano Belt, Borborema Province, Brazil) in southern Alagoas state: geology and geochronology
... Orogeny. Zircon U-Pb dating of orthogneiss samples of the Jirau do Ponciano Complex yielded dominant crystallization ages in the interval ...2019). U-Pb dating of detrital zircon ...
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Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica
... new zircon U–pb and Hf isotopic data from remote Antarctic outcrops with aeromagnetic data observations from the conjugate Australian-Antarctic margins to identify two new Antarctic Mesoproterozoic ...
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Insights into the evolution of The Hindu Kush Kohistan Karakoram from modern river sand detrital geo and thermochronological studies
... The detrital zircon U-Pb ages from modern river sediments of Indus tributaries MRS 2,.. compiled published bedrock data from the source terranes..[r] ...
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Tracking exhumation and drainage divide migration of the western Alps: a test of the apatite U Pb thermochronometer
... Our zircon U-Pb data from the Molasse Rouge (BA03) yielded Alpine ages from two grains; the unit also has minor clinopyroxene thought to be reworked (Evans and Mange-Rajetzky, ...Our zircon ...
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Oligocene partial melting in the Takab metamorphic complex, NW Iran: Evidence from in situ U-Pb geochronology
... SHRIMP zircon U-Pb dating of the different subhedral to euhedral new zircon crystals constrains the timing of partial ...that zircon growth began at ...of zircon growth ages ...
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Silicic ash beds bracket Emeishan Large Igneous Province to < 1 m y at ~ 260 Ma
... We would like to thank Jason Ali, an anonymous reviewer and Editor Andrew Kerr, for their constructive comments and suggestions which substantially improved our manuscript. This research was supported by the Open Fund ...
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Benjamin_Thyer_Undergraduate_Thesis.docx
... New zircon U-Pb ages for samples MPRM-21 and MPRM-DSC ...protracted zircon age spectra are difficult to interpret because of the potential for Pb-loss or ...inheritance. Pb-loss ...
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U Pb zircon ages for Yarlung Tsangpo suture zone ophiolites, southwestern Tibet and their tectonic implications
... The southwestern Tibetan ophiolites form a 300-km-long discontin- uous belt, dominated by three major massifs (from east to west): the Dangxiong, Jungbwa (Yungbwa) and Kiogar massifs (Fig. 3). These mas- sifs occur c. 20 ...
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Detrital zircon geochronologic tests of the SE Siberia-SW Laurentia paleocontinental connection
... trital zircon U-Pb age ...to U- Pb date them at the Stanford University-US Geological Sur- vey SHRIMP facility and at the LAICPMS facility at Wash- ington State ...equivalent ...
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The tectonics and paleo drainage of the easternmost Himalaya (Arunachal Pradesh, India) recorded in the Siwalik rocks of the foreland basin
... U-Pb zircon and apatite data for samples from the Sibo, Remi, and Siang sections and.. from modern riverbeds compared to potential source regions.[r] ...
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Microstructural Geochronology of Zircon Across the Central Uplift of the Vredefort Impact Structure, South Africa
... A fundamental principle of geology is that Earth was formed from gradual, endogenic processes occurring over an appreciable amount of geological time. This concept, aptly named uniformitarianism, was proposed by James ...
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U Pb zircon constraints on tectonic development of the Unst Ophiolite: an oceanic core complex in the Scottish Caledonides?
... In this paper we: 1 report the results of U-Pb dating of metamorphic zircon from the sole of the ophiolite, thus placing a lower limit on the timing of obduction , and 2 re-evaluate publ[r] ...
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U Pb zircon ages for Yarlung Tsangpo suture zone ophiolites, southwestern Tibet and their tectonic implications
... *Corresponding author: Jonathan Aitchison Tel.: +61 93513244 email address: [email protected] Abstract Ophiolite complexes preserved along the Yarlung Tsangpo suture zone [r] ...
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Geochemistry, Nd, Pb and Sr Isotope Systematics, and U-Pb zircon ages of the Neoarchean Bad Vermilion Lake Greenstone Belt and Spatially Associated Granitic rocks, Western Superior Province, Canada
... My sincerest thanks and gratitude must foremost be extended to Dr. Ali Polat for his patient mentorship, enthusiastic encouragement, and, most of all, his thorough, insightful, and constructive criticism–all of which ...
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Deep Crustal Evolution of the Western Churchill Province, Nunavut, Canada: Isotopic (U-Pb, O), Trace Element and Micro-Structural Analysis of Zircon from Lower Crustal Xenoliths
... through Pb-removal and/or Pb-redistribution (McFarlane et ...of Pb-variability in ...apparent Pb-loss in these zircons. In both studies, the youngest U-Pb dates were obtained ...
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Deciphering the geochronology of a large granitoid pluton (Karkonosze Granite, SW Poland): an assessment of U Pb zircon SIMS and Rb Sr whole rock dates relative to U Pb zircon CA ID TIMS
... mostly U-Pb SIMS (SHRIMP) results, for the Karkonosze granites is shown in Figure ...SIMS U-Pb results on zircon and monazite from various granitoid types by Kusiak et ...
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