Abstract Primary gypsum represents an excellent paleobiological archive due to its early and fast growth, favoring the preservation of delicate biomineralized structures. The Mediterranean region is renowned for evaporite deposits that formed during Messinian salinity crisis (MSC), event supposedly annihilated most marine biota. However, evaporites have been scarcely studied their fossil conten...

The study of thermal conductivity anisotropy is great importance for more accurate heat flow calculations, geodynamic studies, development and utilization hot dry rock, simulation transfer in geological reservoirs nuclear waste, so on. To the rocks, 1158 cores from 60 boreholes East China were tested conductivity, including values parallel to (??) perpendicular (??) structural planes basalt, mu...

This research aims to determine the effects of wastewater irrigation on groundwater quality west Girga, Sohag, Egypt. Twenty-six and one sewage-treated effluent samples were analyzed using standard methods for a range physio-chemical microbiological parameters. Surrounding plant, about 46% collected impacted by contamination, as indicated positive detections fecal coliform bacteria infiltrated ...

Abstract. Using borehole-constrained 3D reflection seismic data, we analyse the importance of sub-salt, salt, and supra-salt deformation in controlling geometries kinematics inverted structures Danish Central Graben. The Graben is part failed Late Jurassic North Sea rift. Later tectonic shortening caused mild basin inversion during Cretaceous Paleogene. Where mobile Zechstein evaporites are pre...

Gorgonum Chaos is part of the Eridania paleolake in Terra Sirenum and displays a number prominent light-toned morphological features that bear record regional climatic conditions throughout most Martian history. Based on an intergrated analysis orbital data, we mapped 1,500 km2 area southeast Chaos. Morphologic, spectroscopic, stratigraphic analyses were used to determine age composition main g...

Outcrop exposures of sedimentary rocks at the Opportunity landing site (Meridiani Planum) form a set of genetically related strata defined here informally as the Burns formation. This formation can be subdivided into lower, middle, and upper units which, respectively, represent eolian dune, eolian sand sheet, and mixed eolian sand sheet and interdune facies associations. Collectively, these thr...

0019-1035/$ see front matter 2012 Elsevier Inc. A doi:10.1016/j.icarus.2012.02.027 ⇑ Corresponding author. Fax: +1 401 863 3978. E-mail address: [email protected] (T.A. Gou A large number of candidate open-basin lakes (low-lying regions with both inlet valleys and an outlet valley) have been identified and mapped on Mars and are fed by valley network systems that were active near the Noachia...

This work uses an atmospheric singlecolumn-model, SCCM, coupled to a sulfate aerosol model to provide an initial assessment of the climate sensitivity to stratospheric sulfate aerosols produced by the reaction of S-bearing gases and water vapor released in the Chicxulub impact event. As expected, the formation of large amounts of sulfate aerosols in the stratosphere results in a strong heating ...

Calcium sulfate (CaSO4) is one of the most common evaporites found in earth’s crust. It can be as four main variations: gypsum (CaSO4∙2H2O), bassanite (CaSO4∙0.5H2O), soluble anhydrite, and insoluble anhydrite (CaSO4), being key difference hydration state mineral. Naica giant crystals’ growth starts from a supersaturated solution delicate thermodynamic balance close to equilibrium, where form n...

Large regions of Earth's surface are underlain by salt deposits that evaporated from ancient oceans and populated extreme halophilic microbes. Some these halophiles may have been preserved over geological timescales within hypersaline fluid inclusions, but ingresses water and/or anthropogenic activities can lead to the formation alternative habitats, including NaCl stalactites or other speleoth...