Pyritic shale
Investigation of destructive ground heave attributed to pyritic fill affecting new-build properties in the Dublin area of Ireland. Author links open ... and from Oslo in Norway (Moum and Rosenqvist, 1959). However, Canadian experience with Ordovician black ‘shales’ during the late 1960s reported by Quigley and Vogan (1970), Penner and …SUMMARY. A comprehensive characterization of clay shale behavior requires quantifying both geomechanical and hydromechanical characteristics. This paper presents a comparative laboratory study of different methods to determine the water permeability of saturated Opalinus Clay: (i) pore pressure oscillation, (ii) pressure pulse …
Did you know?
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 …Moreover, bedding-parallel permeability of the black shale Roy3 and pyritic sandstone Roy4 was below the detection limit of 0.01 millidarcy. Thus, these rocks might have been sealed to hydrocarbon migration since they were last metamorphosed at 2450 to 2000 Ma.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.Pre- and post-compression porosity analysis. Porosity of the non-compressed 3D models of the ROI-1 and ROI-2 were 13.2% and 14.7% respectively. These porosities were then re-evaluated after each ...grained pyritic shale, except for a ~25-mm-thick layer of colloform . pyrite intergrown with carbonate. The portion of GMSP-009 ana-lyzed in this study contained 12.2% sulfur and 348 ppm of Cu.One recipe involves pyrite shales where the pyrite reacts with the aluminous clay content of the shales, and added wood potash, to give alum. Pyrite provided an essential ingredient, sulphur, for a very dangerous industrial material: gunpowder. ... V. pyritic banded metasediment, moderately pyritic to semi massive, #27–33; VI. veinlet, …Hamilton Group including Mahantango Formation - Dark gray, laminated shale, siltstone, and very fine-grained sandstone; thickness 600 feet in west, increases to 1,200 feet in east, and Marcellus Shale - Gray-black, thinly laminated, pyritic, carbonaceous shale; thickness 250 feet in east, increases to 500 feet in west.Expansive pyritic shales are found in black carbonaceous shales throughout the United States as well as in other countries, including Ireland, England, Norway, Canada, and Sweden. Expansion occurs ...The oxidation of pyrite following exposure of pyrite bearing deposits during earthworks and construction activities has been observed to progress rapidly on a timescale significant to construction, and the process produces conditions that are chemically aggressive to engineering material particularly buried steel and concrete (Reid et al. 2001, 2005; BRE 2001).Pyritic shale and other sulfide-rich sediment under today’s oxidizing atmosphere contribute sulfate ions, whereas basic and ultrabasic rocks tend to produce alkaline Mg–HCO 3 mother waters. In all, Eugster and Hardie ( 1978 ) distinguished five major water types in what they termed “hydrologically closed” continental evaporite …If pyritic shale or iron sulfide-bearing rock are present beneath buildings or pavements, the volume change caused by the oxidation of iron can ... Biogeochemical Weathering of Underlying Shale,” Canadian Geotechnical Journal, Vol. 12, pp. 372–378. 2. Wille, K. and Zhong, R. 2016. “Investigating the deterioration of basement walls made ofpyritic shale, which has caused extensive damage to a structure in Ireland. Floor heave of the structure measured between 5mm (0.2 in.) and 11mm (0.43 in.) after a period of approximately five years.Synonyms for shale include rock, sediment, clay, slate, sedimentary rock, chalk, chemical sedimentary rock, clastic rock, conglomerate and limestone. Find more similar words at wordhippo.com!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 predominance of fine clastics in the upper part of the rift sequence, including reduced carbonaceous and pyritic shales, reflects deposition in semi-enclosed marine basins with a declining supply of sediment and often a high organic matter input indicative of anoxic or suboxic bottom-water. These conditions were developed during gradual ...Expansive pyritic shales are found in black carbonaceous shales throughout the United States as well as in other countries, including Ireland, England, Norway, Canada, and Sweden. Expansion occurs ...The term New Albany has been used in the literature since that time. Description: The New Albany Shale is composed of brownish-black carbon-rich shale, greenish-gray shale, and minor amounts of dolomite and dolomitic quartz sandstone (Lineback, 1968, 1970). As recognized by Lineback, the formation consists of five members in southeastern Indiana. Jan 1, 2022 · Mudstone lithofacies in the HRZ Shale, such as pyritic organic mudstone, pyritic organic siliceous shale, pyritic grey mudstone, and grey mudstone, can be correlated for up to 90 miles (∼145 km). The aforementioned facies are present within all wells. shale. Pyrite is present in many varieties of metamorphic, sedimentary, and igneous rocks, and expansion due to the weathering of pyrite in several rock types (e.g., shale, gneiss, schist) has been documented. If you have a project that requires mineralogical, petrological, or geochemical characterization, ATL, a WBE Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al 2 Si 2 O 5 ( OH) 4) and tiny fragments ( silt -sized particles) of other minerals, especially quartz and calcite. [1] Shale is characterized by its tendency to split into thin layers ... Previous research at the site of a landslip at Mam Tor, Derbyshire, has linked the oxidation of pyrite in Edale Shale to the generation of acid groundwater. Chemical analysis of surface seepages suggests that reactions occur between this acid water and sedimentary minerals, including clays. pyritic shale, which has caused extensive damage to a structure in Ireland. Floor heave of the structure measured between 5mm (0.2 in.) and 11mm (0.43 in.) after a period of approximately five years.Pyrite as an Ore of Gold. The most important use of pyrite is as an ore of gold. Gold and pyrite form under similar conditions and occur together in the same rocks. In some deposits small amounts of gold occur as inclusions and substitutions within pyrite. Some pyrites can contain 0.25% gold by weight or more.The Mount McRae Shale comprises carbonaceous (TOC c29 ມິ.ຖ. 2022 ... Irradiation of the pyri Expansion of Pyritic Shales (Article), National Research Council Canada 1972 article explaining the cause, effects, and some examples of pyrite-induced swelling (some technical language) Concrete Foundations: Information and …Shale gas plays a vital role in today’s international energy market because of its clean and ecient char-acteristics. Using shale gas to replace traditional energy is crucial for the energy structure up-grada-tion and carbon emission reduction (Tao and Clar-ens 2013; Zou et al. 2021). As a result, shale gas has upon the relative concentration of pyritic sulfur, The factors and mechanisms responsible for swelling of pyritic shales are identified; methods of testing and evaluating the potentially expensive shales are outlined; and ways of controlling or eliminating the problem are summarized.Case histories involving expansive pyritic shales are well documented; specifically, areas of the United States include Tennessee (Long and Williams 1990), Virginia (Freeman 2003), Ohio (Anonymous ... rock in civil construction. Case histories of heave due
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).Expansive pyritic shales are found in black carbonaceous shales throughout the United States as well as in other countries, including Ireland, England, Norway, Canada, and Sweden. Expansion occurs ...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 ...Abstract. We examined the hypothesis that sulfide drives arsenic mobilization from pyritic black shale by a sulfide–arsenide exchange and oxidation reaction in which sulfide replaces arsenic in arsenopyrite forming pyrite, and arsenide (As−1) is concurrently oxidized to soluble arsenite (As+3). This hypothesis was tested in a series of ...This volumetric expansion within shale is called pyritic heave, and has been identified as the major cause of bedrock (Anderson, 2008; Hoover and Lehmann, 2009), shale floor slab (Gratten-Bellew ...
Figure 1 illustrates an artifact, classified as a 'shale axe head', found in Ryedale, Nort. Yorkshire, whose surface is extensively cracked and whose core ...Synonyms for shale include rock, sediment, clay, slate, sedimentary rock, chalk, chemical sedimentary rock, clastic rock, conglomerate and limestone. Find more similar words at wordhippo.com!To simulate shale softening, these shale samples were immersed in deionized (DI) water heated to 100 °C temperature and subjected to 8 MPa pressure in a laboratory reactor for 72 hours to ...…
Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Here, the pyritic shale occurs as a 0.78 m-thick stratifor. Possible cause: It should be applied in adjective form as "micaceous," ".
An advanced method for pyritic and organic sulphur quantification was developed using a Rock-Eval 6 adapted for sulphur quantification in addition to carbon (Rock-Eval 6S). It consists in data ...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 ...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.
An advanced method for pyritic and organic sulphur quantification was developed using a Rock-Eval 6 adapted for sulphur quantification in addition to carbon (Rock-Eval 6S). It consists in data ...black shale or massive sulphide units. Only samples which are high in iron sulphides, or are pyritic in nature, need to be collected at this stage. If there are large amounts of this type of rock present, then the pit geologist can advise further on which samples are likely to contain the highest amounts of iron sulphides.
Oct 1, 2019 · The wide distribution of δ a A hand specimen from Fall Brook (near Geneseo, NY), the type section of the Geneseo Shale. The specimen shows pyritic streaks mostly in the lower half (yellow arrows), and was collected from directly above the Tully Limestone (Fig. 16). b A drill core sample of Geneseo shale with abundant pyritic streaks (yellow arrows)Jan 5, 2023 · Shale. Shale is the most abundant of all sedimentary rocks. It is composed primarily of soft clay minerals, but may include variable amounts of organic matter, calcareous material, and quartz grains. Shale may be any color, but is generally greenish gray to grayish black. It is relatively soft and has a smooth, greasy feel when freshly exposed ... pyritic shale, which has caused extensive damage to a stPrevious research at the site of a landsli Here, the pyritic shale occurs as a 0.78 m-thick stratiform horizon within the carbonaceous shales extending over an area of 2.1 km 2. The uniform thickness as well as the conformable nature of the pyrite bed with the overlying and underlying carbonaceous shale is a conspicuous feature throughout. 28 ມິ.ຖ. 2007 ... Vear and Curtis (1981) report Investigation of destructive ground heave attributed to pyritic fill affecting new-build properties in the Dublin area of Ireland. Author links open ... and from Oslo in Norway (Moum and Rosenqvist, 1959). However, Canadian experience with Ordovician black ‘shales’ during the late 1960s reported by Quigley and Vogan (1970), Penner and …Previous research at the site of a landslip at Mam Tor, Derbyshire, has linked the oxidation of pyrite in Edale Shale to the generation of acid groundwater. Chemical analysis of surface seepages suggests that reactions occur between this acid water and sedimentary minerals, including clays. Marcellus Formation (part of Millboro Shale): The O 2 consumption rate of oxidation ofShale gas plays a vital role in today’s international ene Expansion of Pyritic Shales. CBD-152. Expansion of Pyritic Shales. Originally published 1972. Weathering of rock formations containing pyrite--an oxidation process--results in a volume increase associated only recently with basement floor heave in Canada. It is now known that pyrite weathering was identified as early as 1950 as a major ... 13.19.5.12 Black Shale and Seawater. Black shales and seawater also represent significant reserves of uranium, although economic extraction of uranium from each is a challenge. Uranium in shales resides with organic matter. The uranium contents of black shales are variable but can reach 400 ppm, such as in the Ranstad deposit in Sweden. Four pyritic shale samples collected from different areas of an iro weathering of pyritic mudrocks in a shale embankment. Quarterly Journal of Engineering Geology 23(4): 365–381. Reid JM, Czerewko MA and Cripps JC (2005) ...the distruptive potential of pyritic shale fill (continued) figure 6. a one inch-wide crack with a three-quarter-inch vertical offset was . documented in a concrete floor slab over . pyritic shale fill. portions of the slab had . heaved upward more than two inches over three years before the slab and underlying fill were removed. Large et al. proposed pyritic shales farther down in the Case histories involving expansive pyriti quantities of pyritic shale in large columns. The rationale of this approach was to determine the oxygen dependency of pyrite oxidation in the simplest case ...