The volcanic rocks in Semporna Peninsula, Sabah, Malaysia forms parts of the Miocene subjected slab during Miocene-Pliocene orogeny. This study presents new petrographic and geochemical data area. range composition from basaltic andesite, dacite to rhyolite, with most shows calc-alkaline affinity a minor tholeiitic feature. trace elements enrichment large-ion lithophile (LILE) light rare earth ...

Geological structures in the Bukit Gadang geothermal area have been identified using geomagnetic method to determine type of fault. Data was measured a magnetometer with dimensions 1200 m × consisting 144 points at 12 tracks, and spacing between 100 m. Magnetic anomaly data performed diurnal IGRF (International Geomagnetic Reference Field) corrections. Furthermore, reduced poles continuous upwa...

hydrothermal alteration processes are extensively took place on volcanic and pyroclstics of takestan area. existence of abundant, deep fracturing and subvolcanic intrusions are enhanced extend hydrothermal alteration zones. the following alteration zones are determined: propylitic, argillic, advanced argillic and sillicic. there are outcropped and widespread in different size and limit. formati...

Abstract The geoarchaeological study focuses on the lithological characterization and provenance determination of rocks El Pozuelo dolmens. difficulty identifying volcanic in intensely altered deformed environment Iberian Pyrite Belt has required implementation a research methodology combining archaeological geological analysis megaliths area surrounding Los Llanetes group. A total 29 thin sect...

Landslides in Indonesia have caused much damage and claimed lives inland, environment, people, property. This study aims to identify analyze the types of landslides, factors causing impacts landslide-prone determining food security agricultural economics. The research method used was survey laboratory analysis. conducted Samin Hulu Tengah River Basin (Matesih Karangpandan Districts) Karanganyar...

There have been presented the results of study a thick (no less than 2–3 km), extended (for more 200 km) volcanogenic formation (Tsetsen-Uul or Yargait) in south Zavkhan terrane Central Asian fold belt. The is an assemblage frequently intercalating effusive rocks subalkaline basalt-andesite-dacite-rhyolite series, their tuffs, tuffites, ignimbrites, and terrigenous rocks. Felsic dominate over b...