We investigate the late Cretaceous blueschist-facies (480 °C-1.8 GPa) segment of Zagros suture zone, a well-preserved block-in-matrix paleo-subduction channel. aim to determine relative chronology, conditions deformation, and potential fluid sources processes associated with widespread occurrence lawsonite + clinopyroxene glaucophane veins aragonite-bearing hydraulic breccias. use multi-scale a...

Uranium-series isotope measurements were made by mass spectrometry on aragonite, dolomite and groundwater samples from Pleistocene coral-reef terraces on Barbados in order to evaluate the behavior of U-Th isotopes during water-rock interaction in carbonate systems. Well-preserved aragonitic corals from the Golden Grove terrace yield precise 23°Th ages of 219 _+ 3 and 224 ± 6 ky, and have high a...

Experiments were conducted simulating hydrothermal conversion of heavy oil in the presence carbonate, kaolin, Al2O3, Ni2+ and Cu2+, NiO mixed with poly-?-olefins, C6H8O7, C2H4O2 at 290–375 °C 10–135 bar. carbonate 375 135 bar, accelerated resin degradation. 350 10 bar showed no significant composition changes. NiSO4, CuSO4, kaolin mineral, 78 decomposition resins (from 35.6% to 32.5%). Al2O3 29...

Rock strength is an essential and effective property in the rock drilling, excavation, cost evaluation. This work aims to examine a practical approach evaluate geomechanical properties that control drillability, such as uniaxial compressive (UCS) by utilising some petrophysical parameters (porosity bulk density) elastic (Young’s modulus, slowness). To achieve this aim, study was conducted on Ju...

[1] Deep aquifers are potential long-term storage sites for anthropogenic CO2 emissions. The retention time and environmental safety of the injected CO2 depend on geologic and physical factors and on the chemical reactions between the CO2, the aquifer water, and the host rocks. The pH buffer capacity of the aquifer water and the acid neutralization potential of the host rocks are important fact...

Introduction: The Rochechouart impact structure is a deeply eroded, late Triassic impact site located in south-central France [1,2]. Rochechouart impactites comprise five main lithological units from the base of the structure upwards, originally described as follows: unit 1) shocked autochthonous basement rock; unit 2) finely crystalline melt rock; unit 3) red 'welded' breccia/suevite; unit 4) ...

a r t i c l e i n f o Keywords: Low-salinity Waterflood LSW Brine Double-layer Sandstone Carbonate Film Low-salinity waterflooding is a relatively new method for improved oil recovery that has generated much interest. It is generally believed that low-salinity brine alters the wettability of oil reservoir rocks towards a wetting state that is optimal for recovery. The mechanism(s) by which the ...

Limestone is a rock belonging to the type of sedimentary rock, formed as result natural sedimentation process. non-metallic mineral that used in various sectors, such paint industry, glass plastics, paper liming on agricultural land and also metal smelting industry. products produced by PT. Sugih Alamanugroho form calcium carbonate flour (powder) with sizes 800 1,200 mesh. Before being marketed...