[1] In this work we investigate the crustal and tectonic structures of the Central Tyrrhenian back-arc basin combining refraction and wide-angle reflection seismic (WAS), gravity, and multichannel seismic (MCS) reflection data, acquired during the MEDOC (MEDiterráneo OCcidental)-2010 survey along a transect crossing the entire basin from Sardinia to Campania at 40°N. The results presented inclu...

East Java is characterised by a complex interaction of volcanic and tectonic processes it marked isolated eruptive centres scattered across the back-arc sedimentary basins. In 2006 large sediment hosted geothermal system named Lusi, pierced Kendeng basin in since then continues relentless eruption mud breccia. To investigate spatial structural relationships between arc domains, we perform local...

Located in the southern margin of Central Asian orogenic belt, stratigraphy and tectonic setting mafic 290−280 Ma Liuyuan Complex have been controversial for decades, with workers arguing a forearc ophiolite or continental rift setting. Here, we present results detailed field study, where was subdivided into troctolite, melatroctolite, layered gabbro, varitextured olivine hornblende plagiograni...

Hydrothermal precipitates associated with active vents in the eastern Manus back-arc basin, Papua New Guinea, are among the most gold rich yet discovered on the modern sea floor. The volcanic rocks associated with this mineralization were investigated to determine if they are sufficiently enriched in gold to account for the gold content of the sulfides by simple leaching and to determine whethe...

Back-arc basins in continental settings can develop into oceanic basins, when extension lasts long enough to break up the lithosphere and allow mantle melting that generates new crust. Often, basement of these is not only composed crust, but also exhumed mantle, fragments intrusive magmatic bodies, a complex mid-ocean ridge system characterised by distinct relocations spreading centre. To bette...

A new sessile barnacle, Eochione/asmus ohtai, n. gen ., n. sp ., has been discovered associated with an abyssal hydrothermal vent at 1990 m depth in the North Fiji Basin, Southwest Pacific. The genus is distinguished from its closest and bathyal relative, Chione/asmus , in having distinct, multiple whorls of basal imbricating plates. These and other characters render it the most primitive livin...

Ophiolites are widely studied to unravel how new subduction zones form. They may contain crustal and mantle rocks that formed during juvenile stages of intra-oceanic subduction, modifying the pre-existing oceanic lithosphere within which started, in a magmatic arc upon maturation. Previous geochemical work on Cretaceous Andaman Ophiolite its metamorphic sole, located forearc Sunda zone south-ea...