Ascertaining the emplacement mechanism of oceanic basaltic lavas is important in understanding how ocean floor topography produced and plates evolve, particularly during early stages crustal development a supra-subduction zone. A detailed study volcanic stratigraphy at International Ocean Discovery Program (IODP) Site U1438 Amami Sankaku Basin, west Kyushu–Palau Ridge, has revealed lava accreti...

Abstract Basalts and basaltic rocks are the most abundant igneous on earth their petrologic geochemical studies have formed our knowledge base thermal structure composition of mantle with which we developed workable models chemical differentiation earth. All this would not been possible without innovative painstaking experimental petrology peridotite melting, magma generation evolution largely ...

A cryptotephra belonging to the Upper Pleistocene volcanism of Bas-Vivarais was identified for first time in sedimentary infilling entrance area Chauvet-Pont d’Arc cave. This slightly reworked tephra fall is characterized by its heavy minerals assemblage, among which magnesian olivine, enstatite, and chromian diopside issued from peridotites olivine basaltic origin. composition likely refers a ...

Introduction: A great deal has been learned about the composition of the martian surface using orbital and in-situ spectroscopy. Significant advancements have been made possible by recent measurements from the Thermal Emission Spectrometer (TES), Thermal Emission Imaging System (THEMIS), Observatoire pour la Minéralogie, l'Eau, les Glaces et l'Activité (OMEGA), Miniature Thermal Emission Spectr...

Hydrothermal processes on Mars: It has been suggested that hydrothermal process may have been active in the history of Mars[1]. This concept is supported by three lines of evidences: (1) widespread evidences of volcanic activity on Mars; (2) high levels of WEH (water-equivalent-hydrogen) found in two large equatorial regions on Mars (ODY_NS) [2]; (3) The ground ice excavated by meteorite impact...