Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 3 of 3 for “"Ar-Ar geochronology"”.
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RE – OS AND PGE GEOCHEMISTRY OF ORGANIC-RICH SEDIMENTARY ROCKS AND PETROLEUM
The research in this thesis is presented in paper format with each of four chapters representing one complete study. Chapter two presents Re–Os and geochemical fingerprint data for UK Atlantic margin oils. organic and δ13C geochemical data demonstrate that the oil is sourced from Upper Jurassic …
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Prelude to the Tshirege caldera-forming eruption of the Bandelier magmatic system, New Mexico, USA
… Valles in the last ca. 70 kyr, the presence of partially molten magma bodies at depth evokes the question of how the system might evolve prior to a return of catastrophic volcanism. To address this question, I utilize mineral and glass compositions, phase equilibrium experiments, and ⁴⁰Ar/³⁹Ar …
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Closure of the Neotethys Ocean in Anatolia : structural, petrologic and geochronologic insights from low-grade high-pressure metasediments, Afyon Zone
… of former oceanic domains (named suture zones) are generally decorated with stratigraphic sequences deposited along continental passive margins that were metamorphosed under low-grade, high-pressure conditions, i.e., low temperature/depth ratios (< 15°C/km) with respect to geothermal gradients …