Like hydrothermal vents along oceanic ridges, cold seeps are patchy and isolated ecosystems along continental margins, extending from bathyal to abyssal depths. The Atlantic Equatorial Belt (AEB), from the Gulf of Mexico to the Gulf of Guinea, was one focus of the Census of Marine Life ChEss (Chemosynthetic Ecosystems) program to study biogeography of seep and vent fauna. We present a review an...

Okmok volcano located on the northeastern part of Umnak Island is one most active volcanoes in Aleutian Arc. It was initially built as a large shield volcano, but 12,000 and 2,050 years ago, it experienced two caldera-forming eruptions that destroyed central volcano. The post-caldera have occurred mostly along inner perimeter caldera from cinder tuff cones. Here, we use local earthquake data Al...

Rifted margins are often associated with widespread and thick evaporite (salt) deposits pronounced salt tectonics. The largest basins form during the latest stages of rifting, immediately prior to continental breakup. Salt tectonics along these commonly exhibit structural domains characterized by gravity-driven updip extension, translation, downdip shortening, nappe advance. precise spatial tem...

The impacts of relative sea-level (RSL) variations and crust mobility on the development ancient harbours in northern Persian Gulf are poorly understood. Many unanswered questions remain with regard to main reasons for a shift location most important part coastal since 50 BC. Furthermore, some early Islamic harbours, such as Siraf, have city quarters that today below present sea level. aim this...

The Santos Basin, offshore Brazil contains a complex set of salt-tectonic structures, the origins which are debated, that is, Albian Gap and São Paulo Plateau (SPP). is ca. 450 km long, 60 wide feature characterized by post-Albian, counter-regional rollover overlying depleted Aptian salt, in largely absent. SPP, located immediately downdip, defined pre-salt structural high overlain 2.5 thick sa...

The present study examines the imprint of salt tectonics on carbonate depositional patterns Ionian zone platform edge to slope transition. area is part an overturned rim syncline adjacent a diapir. made up three distinct stratigraphic sequences (pre-, syn- and post-rift sequences) represented by evaporites shallow water carbonates at base that pass gradually sequence consisting pelagic limeston...

The combination of oceanographic processes and a negligible fluvial terrestrial sediment contribution makes the Santos Basin margin (southwestern Brazil) unique environment for studying thew morphological imprint bottom currents on seafloor morphology. We divide into four domains: outer shelf, upper, middle, lower slope, based an analysis sub-bottom Chirp profiles, multichannel seismic data, hy...

Plumes spewing water high above Europa's surface have been inferred from several observation campaigns in the past decade. Whereas occasional existence of plumes on Europa has thus confirmed, origin remains uncertain. Most notably, it is still unclear whether are oceanic origin, possibly containing information about ocean's habitability, or if they surficial nature, offering highly processed in...

Research subject. The orogenic marginal-continental and collisional volcanic-plutonic belts, the zonality of magmatism metallogeny within them, as well relationship endogenous with magmatic geodynamics belt formation. Materials methods include long-term studies Devonian Upper-Paleozoic belts Kazakhstan Cretaceous-Paleogenic Sikhote-Alin; an analysis alterations in material parameters magmatites...