Did you know?

In Green River oil shale, sulfur occurs in both inorganic and organic combinations; 70 to 85% of the sulfur is present as pyrite, and most of the remaining …Pyritic infill material was sourced from beneath the floor slab of a 5-year-old dwelling in north Co. Dublin, Ireland. This material was removed during the remediation of the house which was damaged by expanding pyritic fill material, which in common with other properties in the development, was between 500 mm and 750 mm deep.A maximum floor …Limestone, gray, micritic, clayey to silty, thin to medium bedded; generally more common in middle and lower portions of unit. Coal, banded, bituminous, thin to as much as 8 feet thick in central and northern areas, thinner to absent in southeastern Ohio. Lateral and vertical lithic variability and gradation common.Synsedimentary to Diagenetic Cu±Co Mineralization in Mesoproterozoic Pyritic Shale Driven by Magmatic-Hydrothermal Activity on the Edge of the Great Falls Tectonic Zone–Black Butte, Helena ...Trace elements contained in pyritic shales (e.g. Se) could be greatly concentrated by this "pumping effect" in minerals that result from weathering reac- tions (BARNES, 1986). Pyrite is considered to be a main source of S in shales. The presence of the soluble sulfate salts such as mirabilite and bloedite show that the weathering chemistry of ...The expansive effects of concentrated pyritic zones within the Devonian Marcellus Shale Formation of North America. S.E. Hoover; D. Lehmann. Author and …Here, we investigate Hg isotopes, which are a promising tool to track the sources of Hg in sediments, in OST strata of the Jiaoye drillcore from the Yangtze Platform of South China. Black shales and pyritic beds exhibit mass-independent fractionations of odd Hg isotopes (odd-MIF, i.e., Δ 199 Hg) of + 0.13 ± 0.05 ‰ and + 0.13 ± 0.03 ...8 ມິ.ຖ. 2007 ... Figure 5.3. Pyritic black shale samples taken from beneath heaved floor slabs at the Evangelical Hospital in Lewisburg, Pennsylvania (S.E. ...Aug 1, 2002 · The distribution and oxidation state of arsenic (As) and selenium (Se) were also determined. The soil used in this study was formed from pyritic shale parent materials on the east side of the California Coast Range. Synchrotron-based X-ray fluorescence microprobe (μ-XRF) was used to generate elemental distribution maps of soil thin sections. The Upper Permian Linghao Formation shale is the most potential shale gas exploration target in Nanpanjiang Basin. In this study, X-ray diffraction, field emission scanning electron microscopy, CH4 isothermal adsorption, and nuclear magnetic resonance cryoporometry are intergrated to reveal comprehensive characterization of Linghao Formation shale collected from a well in Nanpanjiang Basin ...Marcellus Formation (part of Millboro Shale): predominantly gray-black to black thinly laminated non-calcareous pyritic shale. Contains one or more thin-bedded limestones, including the Purcell Member of Pennsylvania. Needmore Shale (part of Onesquethaw ("Onondaga") Group): predominantly dark grey or green, calcitic, mostly non-fissile shale. Fine-grained sedimentary rocks (shale and mudstone) play important roles in global CO2 abatement efforts through their uses in carbon capture and storage (CCS), radioactive waste storage, and shale gas extraction. These different technologies, however, rely on seemingly conflicting premises regarding the sealing properties of shale and mudstone, suggesting that those rocks that lend themselves ...The shale is variably pyritic and believed to be a source of metals into mineralizing fluids in northern England (Jones et al. 1994). The formation contains anomalously high concentrations of Se across the region (Parnell et al. 2016). A mean concentration of 21.5 ppm Se was determined from measurements of the shale from western Ireland to ...13 ມ.ສ. 2018 ... ... pyritic shale swelling below ground. Cracks, floor heave and damage is largely limited to the school building's multi-purpose room and ...The cause of spontaneous combustion of pyritic black shale has been studied by calorimetry and other techniques. The conditions required for ignition to occur are: 1. A critical mass of pyritic black shale._x000D_ 2. Acidity. 3. Fine shale particle size._x000D_ 4. A high ambient temperature. 5. The exclusion of air during the preparation of a …The HYC Pyritic Shale member, which hosts the mineralization in subbasin depocenters, was deposited in deep subtidal to slope environments below storm wave base (Bull, 1998; Kunzmann et al., 2019). A detailed facies analysis, sequence stratigraphic, and chemostratigraphic interpretation was provided by Kunzmann et al. ( 2019 ).Jan 5, 2023 · Foundation Engineering. Pyrite oxidation and expansion in the New Albany black shale have caused serious foundation problems in numerous buildings and structures constructed in the black shale soil horizons in various parts of Kentucky. Pyrite oxidizes, causing various secondary sulfates to form when excavated shale or shale fill is exposed to ... non-pyritic shale with thin-bedded dolomite a nd rare chert bands that is very strongly . invaded by secondary calcite with vughs containing fibrous gypsum. The BIF in .To further investigate pyrite weathering in the late Archean, UV irradiation experiments were conducted with 2.68 Ga pyritic shale. We selected pyrite-bearing shale for this experiment because the emergence of Neoarchean crust above sea level ( 27 , 28 , 53 – 55 ) would have exposed large areas of marine sedimentary rocks for chemical weathering.High-resolution Hg chemostratigraphy (Figs. 1 and 2) reveals two distinct excursions in Hg concentrations in regions dominated by organic-rich, pyritic black shale, with maxima of 491 ng/g at 179.05 m and 1,593 ng/g at 141.47-m stratigraphic depth. We examined these two intervals from 190 to 168 m and from 153 to 125 m at high stratigraphic ...The factors and mechanisms responsible for swelling of pyritic shales are identified; methods of testing and evaluating the potentially expensive shales are outlined; and …Geochemical evidence for Se mobilization by the weathering of pyritic shale, San Joaquin Valley, California, U.S.A. January 1, 1990 Acidic (pH 4) seeps issue from the weathered Upper Cretaceous-Paleocene marine sedimentary shales of the Moreno Formation in the semi-arid Coast Ranges of California. Fine-grained sedimentary rocks (shale and mudstone) play important roles in global CO2 abatement efforts through their uses in carbon capture and storage (CCS), radioactive waste storage, and shale gas extraction. These different technologies, however, rely on seemingly conflicting premises regarding the sealing properties of shale and mudstone, suggesting that those rocks that lend themselves ...The pyritic black shale facies is interpreted as being deposited in a brackish water, coastal marsh or swamp environment. Historically, the pyritic shale facies would be interpreted as part of the “outside shale” in the cyclothem model (Heckel, 1977).

Although much attention has been directed to the solution of problems created by swelling soils, relatively little effort has been devoted to the solution of problems created by expanding pyritic shales. This is a very real problem that has caused extensive damage to many structures in the United States and abroad. In an effort to call attention to this …PDF | Expansive pyritic shales are found in black carbonaceous shales throughout the United States as well as in other countries, including Ireland,... | Find, read and cite all the research...✓ Shales (dark grey). ✓ Pyritic shale (5-20% Pyrite) (brown). ✓ Pyritic shale (>20% Pyrite) (yellow). • Consistent interpretation of the data.Named by. James Hall, 1839. The Marcellus Formation or the Marcellus Shale is a Middle Devonian age unit of sedimentary rock found in eastern North America. Named for a distinctive outcrop near the village of Marcellus, New York, in the United States, [3] it extends throughout much of the Appalachian Basin.

The δ 34 S of pyritic (Y) and organic (X) sulfur in high-sulfur Illinois Basin coals and the Saline Zone of the Piceance Creek Basin, Colorado, U.S.A., oil shale of the Green River Formation exhibit a linear relationship (Y = 1.16X − 4.8; R 2 = 0.98). This relationship implies that a common mechanism resulted in the incorporation of sulfur in …Aug 1, 2002 · The distribution and oxidation state of arsenic (As) and selenium (Se) were also determined. The soil used in this study was formed from pyritic shale parent materials on the east side of the California Coast Range. Synchrotron-based X-ray fluorescence microprobe (μ-XRF) was used to generate elemental distribution maps of soil thin sections. Mesoproterozoic Pyritic Shale Driven by Magmatic-Hydrothermal. Activity on the ... (Cu ± Co ± Ag) deposit is hosted by massive pyritic shale of the Newland ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Beneath 173-m depth, pyritic black shale becomes do. Possible cause: ✓ Shales (dark grey). ✓ Pyritic shale (5-20% Pyrite) (brown). ✓ Pyritic shale (>20% Pyr.