Modelling Isotopic Responses to Disequilibrium Melting in Granitic Systems
نویسندگان
چکیده
منابع مشابه
U-series isotopic disequilibrium produced during experimental melting of granitic crust: Implications for shallow-level assimilation and pluton remobilisation
Although the production of U-series disequilibria during metasomatic and partial-melting processes in Earth’s mantle is well studied, the effects of melting and assimilation processes during ascent and storage of magma in the crust are less well understood. To investigate disequilibria arising via this mechanism, we have conducted U-series measurements on the products of laboratory experiments ...
متن کاملGlobal-scale modelling of melting and isotopic evolution of Earth’s mantle: melting modules for TERRA
Many outstanding problems in solid-Earth science relate to the geodynamical explanation of geochemical observations. Currently, extensive geochemical databases of surface observations exist, but satisfying explanations of underlying mantle processes are lacking. One way to address these problems is through numerical modelling of mantle convection while tracking chemical information throughout t...
متن کاملIsotopic disequilibrium in Globigerina bulloides and carbon isotope response to productivity increase in Southern Ocean
Oxygen and carbon isotope ratios in planktonic foraminifera Globigerina bulloides collected from tow samples along a transect from the equatorial Indian ocean to the Southern Ocean (45°E and 80°E and 10°N to 53°S) were analysed and compared with the equilibrium δ(18)O and δ(13)C values of calcite calculated using the temperature and isotopic composition of the water column. The results agree wi...
متن کاملDisequilibrium Fractional Melting on the Ureilite Parent Body
Introduction: Ureilites are carbon-rich ultramafic achondrites [1] thought to represent the mantle (residues and minor cumulates) of a parent body that was stratified in mg, pyroxene abundance, and pyroxene type due to the pressure dependence of smelting [2]. Because there are no basaltic ureilites, we lack direct information about melts on the ureilite parent body (UPB). Insights from feldspat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Petrology
سال: 2018
ISSN: 0022-3530,1460-2415
DOI: 10.1093/petrology/egy019