This study reconstructs the depositional conditions of ironstones within Chulym-Yenisey basin and assesses iron source. The detrital minerals studied deposits include quartz feldspar. authigenic are goethite, siderite, aragonite, dolomite, calcite, apatite, barite, pyrite. clay components chlorite group (possible chamosite), nontronite, kaolinite, illite, beidellite. Local bacterial sulfate red...

The upper Miocene to Pleistocene Shimajiri Group, composed mainly of siltstone and sandstone, occurs on some the Ryukyu Islands in southwestern Japan. This group is thought have been deposited a shelf-slope fore-arc basin setting before accumulation coral reef deposits (Ryukyu Group). We investigated calcareous nannofossil biostratigraphy Group Offshore Okinawa 1-x well, drilled near northeaste...

Changes in land use due to open pit mining operations, indirectly affect the hydrological cycle. Open especially method, greatly subsurface conditions, such as lithology and hydrogeology. The purpose of this study was analyze hydrogeological conditions before on syncline folds Mahakam river. This research is an inductive with analytical approach which includes use, geology, area dominated by pl...

The Lough Foyle Basin is a half-graben that straddles the border between Northern Ireland and Republic of contains sediments range in age from Lower Carboniferous to Holocene. basin’s post-rift succession represented by Penarth Group Lias Group. lithostratigraphy biostratigraphy interval are revised using new borehole material existing outcrop. Palaeontological data provide chronostratigraphic ...

A small skeletal fossil assemblage is described for the first time from bioclastic limestone interbeds of siltstone-dominated Guojiaba Formation, southern Shaanxi, China. The carbonate-hosted fossils include brachiopods (Eohadrotreta zhujiahensis, Eohadrotreta zhenbaensis, Spinobolus sp., Kuangshanotreta malungensis, Kyrshabaktella Lingulellotreta yuanshanensis, Eoobolus incipiens, and sp.), sp...

Abstract An essential greenhouse gas effect mitigation technology is carbon capture, utilization and storage, with dioxide (CO 2 ) injection into underground geological formations as a core of sequestration. Developing robust 3D static model the formation interest for CO storage paramount to deduce its facies changes petrophysical properties. This study investigates depleted oilfield reservoir ...

The Jurassic Lianggaoshan Formation lacustrine shale oil is the most potential exploration target of unconventional hydrocarbon resource in Southwest China. In this study, nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), low-temperature N 2 adsorption (LTNA), and high pressure mercury intrusion injection capillary are intergrated to reveal pore structure its controlling fac...

Knowledge of the physical properties rock masses is fundamental for economics and safety mining projects. The determination these in samples laboratory requires time, expensive equipment qualified personnel, which considerably increases information's cost. Indirect methods were developed to obtain related masses, have been shown be a viable alternative traditional procedures. compressional mech...

Fossil remains of chondrichthyan tooth bases (roots) were found in Lower Permian beds exposed along the forest road between Dovje and Plavški Rovt. These layers are part clastic development Trogkofel Group beds. They composed an alternation dark to light-grey shales, siltstone, sandstone with rare conglomerate. Within succession, or lenses dark-grey black limestones (biosparitic, biomicritic oo...