a large distribution of pore sizes, ranging from microcrystalline to large vugs. Knowledge of these pore spaces and their connectivity is crucial to hydrocarbon reservoir characterization and to hydrogeological and near surface environmental applications. In this paper, we present permeability and porosity images based on crosswell seismic measurements integrated with well logs and petrography ...

Quantitative petrography is a scientific and industrial direction of geology, which made huge progress due to developments inventions in information technology optics the last decade. This article introducing modern directions quantitative describes their current state art as well methodical approaches application. The research objects macropetrography are hand specimens, borehole cores polishe...

The basement rocks encountered in exploratory boreholes drilled for exploration and evaluation of coal deposits in Thar Parkar district, Sindh Pakistan have formed the basis for present studies. The basement complex was penetrated through eighteen boreholes at drill depth range from 112 to 279 meters. These rocks were identified in field as Pink and Grey Granites.. The basement rocks are of Ign...

Abstract Information on chloride (Cl) distribution in aquifers is essential for planning and management of coastal zone groundwater resources as well simulation validation density-driven models. We developed a method to derive concentrations from borehole information helicopter-borne electromagnetic (HEM) data the aquifer Elbe-Weser region where observed electrical conductivity reveal that hori...

An investigative study was carried out to determine the bacteriological and physicochemical qualities of borehole and well water samples in Ijebu-Ode, Southwestern Nigeria. Ten water samples each of borehole and well water sources were collected within the geographical location. Physicochemical parameters were determined using standard methods. The total bacterial count was determined by pour p...

The great depth and relatively steep geothermal gradient (3⁄429oC=km) of the KTB deep crustal borehole, located in the Bavarian region of Germany, provides the basis for our study of diffusive argon loss in K-feldspar. The observed borehole temperature at 9 km is 3⁄4265oC which reaches well into the argon closure interval for K-feldspar (3⁄4125–350oC). Four microcline and two adularia samples d...

Samples of Albian Tégulines Clay outcropping near Brienne-le-Château in the eastern part Paris Basin were subjected to a geochemical characterization organic matter (OM), combining OM bulk Rock-Eval analysis (RE), petrography and molecular analysis. In this study, objective was investigate oxidation natural critical zone developed early reduced marine clay formation. For that purpose, core samp...

We describe a viable microbial community in a subglacial lake within the Grímsvötn volcanic caldera, Iceland. We used a hot water drill to penetrate the 300-m ice shelf and retrieved lake water and volcanic tephra sediments. We also acquired samples of borehole water before and after penetration to the lake, overlying glacial ice and snow, and water from a nearby subaerial geothermal lake for c...

Petrography: The interior of the stone consists of relatively small (mean grain size 1.6 mm), angular olivine grains (~73 vol%) in an iron metal matrix (Fig. 1). Ferric oxides are abundant. Samples easily fragment because of the weathering and numerous, probably preterrestrial, fractures. Olivine contains numerous small (typically 50 μm diameter) inclusions, visible in the SEM, that consist of ...

Groundwater sampling from open boreholes in fractured-rock aquifers is particularly challenging because of mixing and dilution of fluid within the borehole from multiple fractures. This note presents an alternative to traditional sampling in open boreholes with packer assemblies. The alternative system called ZONFLO (zonal flow) is based on hydraulic control of borehole flow conditions. Fluid f...