The study introduces a theory about an Evander-size impact on the surface of Dione. Our suspects relatively low-velocity (≤5 km/s) collision between ca. 50–80 km diameter object and Dione, which might have resulted in resurfacing one satellite’s intermediate cratered terrains various ways, such as planing by “plowing” ricocheting ejectiles, ejecta blanket covering, partial melting, impact-trigg...

The Szamotuly Graben covers the southernmost part of Permo-Mesozoic Poznan–Szamotuly Fault Zone. Along this regional discontinuity there are several salt structures, including diapir, over which an extensional graben formed in Paleogene and Neogene. is located north Poznan central-western Poland, NW–SE-trending, ~20 km long, 3–5.5 wide, up to 160 m deep. It filled with Lower Oligocene Neogene s...

S U M M A R Y We have simultaneously inverted seismic refraction and wide-angle Moho reflection traveltimes for the 2-D crustal thickness and velocity structure of 150–300 kyr old crust along the East Pacific Rise (EPR) between the Siqueiros and Clipperton fracture zones (FZs). Our results show a strong correlation between ridge segmentation and upperand mid-crustal seismic velocities, with hig...

A one-kilometer-diameter carbonate/hydrate mound in Mississippi Canyon Block 118 has been chosen to be the site of a multi-sensor, multi-discipline sea-floor observatory. Several surveys have been carried out in preparation for installing the observatory. The resulting data set permits discussing the mound’s structure in some detail. Samples from the water column and intact hydrate outcrops sho...

Salt formations exist in K?z?l?rmak Graben (Central Anatolia, Turkey), which consists of volcano-sedimentary units, and it was stated previous studies that these have a diapiric structure. The adjacent basin, Ayhan Basin, contains bituminous shale operated coal deposits. For this reason, study, is aimed to investigate the oil gas potential by conducting TPH (Total Petroleum Hydrocarbons) analys...

Mudboils are round to elongate, 1-3 m diameter bare soil patches that form on perennially frozen till. marine clayey silt, colluvium. or other poorly sorted sediments (muds) with significant silt and (or) clay content. In Keewatin these muds have low liquid limirs (<ZM) and limited plasticity indices (<It)%). Natural moisture contents are very near the liquid limit .w thal rhe muds liquefv and ...