This paper reports the first discovery of basic igneous rocks in Bairin Right Banner southeastern Inner Mongolia, China. To understand genesis and tectonic evolution these rocks, we have carried out geochronology geochemistry research on them. The results show that LA-ICP-MS zircon U-Pb concordant mean ages massive basalt, diabase, pillow basalt are 272.0 ± 2.8 Ma, 261.5 3.2 256.5 2.5 respectiv...

We report composition and age data from a restricted <370 km2, volcano-sedimentary basin beneath Mesozoic cover to the northwest of Flinders Ranges, South Australia. This comprises two components: sedimentary sequence that includes shales, siltstones sandstones, basalt–sedimentary member. Together, these components are defined as Ooloo Hill Formation. Whole-rock K–Ar geochronology for five basa...

Data collated from subalkaline lavas and dikes of Palaeogene ophiolites the SW Pacific in Papua, New Guinea, Caledonia, North Island, Zealand interpreted as having formed first upon subduction initiation, are investigated to determine whether these MORB like, similar other initiation IBM forearc. ophiolite mostly tholeiitic basalt; however, calc-alkaline comprise ~ 25% samples. Major element ab...

Abstract Background Three stages of basalt weathering are known: early or incipient weathering, intermediate and advanced weathering. The Late Oligocene Gebel Qatrani in Fayum Depression, Egypt, shows signs particularly exhibited spheroids found at the top flow. present paper gives results detailed petrographical, mineralogical geochemical study these spheroids. Results core-stones composed phe...

Introduction: The ChemCam (chemistry/camera) instrument on the Mars Science Lander (MSL) images outcrop or regolith at high resolution and uses a laser source to generate high-temperature plasma from spots of ~100 μm diameter, at ranges up to ~7 m [1,2]. The lander will carry body-mounted calibration targets consisting of synthetic silicate glasses, a natural volcanic glass (macusanite), and fo...

Abstract The ~3033 Ma Stella layered intrusion is hosted by supracrustal rocks of the Kraaipan–Madibe greenstone terrane, South Africa. studied portion consists mainly magnetite leucogabbro and anorthosite, as well several massive layers. hosts a laterally continuous, ~60-m-thick, PGE mineralized interval, with total resources amounting to 108t Pt + Pd Au, constituting one oldest known reef-sty...

[1] We report on seismic and petrological data that provide new constraints on the geological evolution of the Amerasia Basin. A seismic reflection transect across the Makarov Basin, located between the Mendeleev and Lomonosov Ridges, shows a complete undisturbed sedimentary section of Mesozoic/Cenozoic age. In contrast to the Mendeleev Ridge, the margin of the Lomonosov Ridge is wide and shows...