40Ar/39Ar
Dating agpaitic rocks : a multi system (U/Pb, Sm/Nd, Rb/Sr and 40Ar/39Ar) isotopic study of layered nepheline syenites from the Ilímaussaq complex, Greenland
... Accepted Manuscript Dating agpaitic rocks: A multi-system U/Pb, Sm/Nd, Rb/Sr and 40Ar/39Ar isotopic study of layered nepheline syenites from the Ilímaussaq complex, Greenland.. Roux PII:[r] ...
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Split grain 40Ar/39Ar dating : integrating temporal and geochemical data from crystal cargoes
... ACCEPTED MANUSCRIPT Abstract Large sanidine crystals from the Mesa Falls Tuff MFT, Yellowstone volcanic field, have been split and individually dated via high-precision 40Ar/39Ar geochro[r] ...
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A new high precision 40Ar/39Ar age for the Rochechouart impact structure : at least 5 Ma older than the Triassic–Jurassic boundary
... Rochechouart also has an advantage for 40Ar/39Ar dating that, at the time of impact, the basement rocks were relatively young, with only 100–200 Ma separating the metamorphism/ intrusion[r] ...
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40Ar/39Ar and cosmic ray exposure ages of plagioclase rich lithic fragments from Apollo 17 regolith, 78461
... 40Ar/39Ar and cosmic ray exposure ages of plagioclase rich lithic fragments from Apollo 17 regolith, 78461 Das et al Earth, Planets and Space (2016) 68 11 DOI 10 1186/s40623 016 0381 9 FULL PAPER Open[.] ...
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40Ar/39Ar age determination using ARGUS VI multiple-collector noble gas mass spectrometer: performance and its application to geosciences
... As suggested in the above section, neutron irradiation process is indispensable for the 40 Ar/ 39 Ar dating. For ir- radiation, several grains of sample were dropped in each hole on alum[r] ...
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Indosinian high strain deformation for the Yunkaidashan tectonic belt, south China : Kinematics and 40Ar/39Ar geochronological constraints
... Main Tectonic Subdivisions [9] Our mapping, integrated with previous work [Bureau of Geology and Mineral Resources of Guangxi Zhuang Autonomous Region, 1985; Bureau of Geology and Minera[r] ...
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Geochronology by the 40Ar/39Ar technique using HIFAR reactor
... GEOCHRONOLOGY BY THE 40 Ar/ 39 Ar TECHNIQUE USING HIFAR REACTOR by Neil Wayne Tetley A thesis submitted in partial fulfilment of the requirements for the degree of DOCTOR OF PHILOSOPHY at the RESEARCH[.] ...
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40Ar/39Ar geochronology of Neogene phreatomagmatic volcanism 3 in the western Pannonian Basin, Hungary
... In western Hungary the formation of the Bakony – Balaton Highland volcanic field and the Little Hungarian Plain volcanic field resulted from 1 deep processes: melt supply from the lithos[r] ...
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Jurassic cooling ages in Paleozoic to early Mesozoic granitoids of northeastern Patagonia : 40Ar/39Ar, 40K–40Ar mica and U–Pb zircon evidence
... cooling ages for the Yaminué Metaigneous Complex, Cabeza de Vaca Granite, Navarrete Plutonic Complex and.. Flores Granite of the Treneta Volcano-Plutonic Complex, b to integrate the new [r] ...
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Taking the pulse of Mars via dating of a plume fed volcano
... Here we quantify the growth rate of a Martian volcano by 40Ar/39Ar and cosmogenic exposure dating of six nakhlites, meteorites that were ejected from Mars by a single impact event at 10.[r] ...
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Thermochronology of mineral grains in the Red and Mekong Rivers, Vietnam: provenance and exhumation implications for Southeast Asia
... Conclusions [49] In this study we have shown that a combination of U-Pb dating of zircon grains, 40Ar/39Ar dating of micas and fission track analysis of apatite and zircon grains can be [r] ...
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LA ICP MS U Pb apatite dating of Lower Cretaceous rocks from teschenite picrite association in the Silesian unit (southern Poland)
... Previous 40Ar/39Ar and 40K/40Ar dating of these rocks in the Polish Outer Western Carpathians, performed on kaersutite, sub-silicic dio- pside, phlogopite/biotite as well as on whole roc[r] ...
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Chronology of martian breccia NWA 7034 and the formation of the martian crustal dichotomy
... Here, we report 40Ar/39Ar, U-Th-Sm/He, and U-Pu/Xe ages obtained from whole-rock fragments and mineral separates to better constrain the impact and metamorphic history of NWA 7034.. The [r] ...
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Sea surface temperature control on the distribution of far-traveled Southern Ocean ice-rafted detritus during the Pliocene
... Here we present a Pliocene IRD provenance record based on the 40Ar/39Ar ages of ice-rafted hornblende grains from Ocean Drilling Program Site 1165, located near Prydz Bay in the Indian O[r] ...
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Extensional faulting on Tinos Island, Aegean Sea, Greece: how many detachments?
... [1] Zircon and apatite fission track ZFT and AFT and U-Th/He, 40Ar/39Ar hornblende, and U-Pb zircon ages from the granites of Tinos Island in the Aegean Sea, Greece, suggest, together wi[r] ...
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Martian paleomagnetism with the SQUID microscope
... 56 Chapter 4 TEMPERATURES ON MARS FROM 40Ar/39Ar THERMOCHRONOLOGY OF ALH840014 The thermal history of martian meteorite ALH84001 has critical implications for its petrological and deform[r] ...
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Petrogenesis and tectonic implications of Early Cretaceous andesitic–dacitic rocks, western Qinling (Central China) : geochronological and geochemical constraints
... Ar/39Ar and zircon UePb geochronological and whole-rock geochemical analyses for the Laozanggou intermediate-acidic volcanic rocks from the western Qinling orogenic belt, Central China, [r] ...
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Cenozoic tectonic history of the South Georgia microcontinent and potential as a barrier to Pacific Atlantic through flow
... Mukasa, S.B., and Dalziel, I.W.D., 2009, Southernmost Andes and South Georgia Island, North Scotia Ridge: Zircon U-Pb and muscovite 40 Ar/ 39Ar age constraints on tectonic evolution of s[r] ...
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