Ice-infiltrated sediment, or frozen fringe, is responsible for phenomena such as frost heave, ice lenses and metres of debris-rich under glaciers. Understanding fringes important heave damaging infrastructure at high latitudes sediment freeze-on the base glaciers can modulate subglacial friction, influencing rate global sea level rise. Here we describe thermomechanics liquid water flow freezing...

Gas hydrates in sub-seabed sediments is an unexploited source of energy with estimated reserves larger than those of conventional oil. One of the methods for recovering methane from gas hydrates involves injection of Carbon Dioxide (CO2), causing the dissociation of methane and storing CO2. The occurrence of gas hydrates offshore Portugal is well known associated to mud volcanoes in the Gulf of...

The estimation of seismic shaking is essential for a realistic assessment the local hazard and implementation effective strategies prevention mitigation risk. One most important aspects in analysis site recognition bedrock its depth. Unfortunately, these data are not always easy to evaluate, especially areas where thickness loose or poorly consolidated sediments high. This article illustrates c...

cambrian sediments are widely exposed in the kerman province. parts of these deposits are containing trilobite fossils. one of the suitable areas for paleontological studies is kamar siah section. this section located about 60 km north east of kerman. these sediments have 200 m thickness with fossil invertebrates of trilobites, brachiopod, gastropods and stromatolite which includes kuhbanan and...

Introduction: The origin and evolution of the Valles Marineris canyon system and its stacks of interior layered deposits (ILD) on Mars remains as one of the most debated topics in Martian tectonics. The subtle broad topographic uplift around the periphery of the canyon system conflicts with the uplifted flanks predicted by models of normal faulting [1]. This uplift is obscured in the east and w...

The best preserved and most complete lava flow sequences of the Central Atlantic Magmatic Province (CAMP) in Morocco are exposed High Atlas can reach up to 300 m thickness. Four distinct formations, emplaced subaerial environments, classically recognized: Lower, Intermediate, Upper Recurrent formations. These formations separated by paleosoils sedimentary (mudstones, siltstones, sandstones, lim...

While the visible portion of the Marquesas Islands is much smaller than that of the Hawaiian Islands, modelling of the shipboard gravity collected during the Crossgrain 2 expedition indicates that the rate of magma production by the two hotspots must be similar. The difference in effective elastic plate thickness beneath the two island chains causes the Marquesas to subside to a greater extent,...

x-ray absorption fine structure (xafs) spectroscopy was used to identify directly the metal speciation and local bonding environment of fe in sediments originated from dobczyce reservoir (poland); special attention was paid to analysis of samples collected from points situated at different distances from the land. the combination of traditional approach to data analysis as well as usage of mult...