Mobilisation of arsenic, selenium and uranium from Carboniferous black shales in west Ireland
Sign Up to like & getrecommendations! Published in 2019 at "Applied Geochemistry"
DOI: 10.1016/j.apgeochem.2019.104401
Abstract: Abstract The fixation and accumulation of critical elements in the near surface environment is an important factor in understanding elemental cycling through the crust, both for exploration of new resources and environmental management strategies. Carbonaceous… read more here.
Keywords: black shales; mobilisation; ireland; jarosite ... See more keywords
Vertical distributions of organic carbon fractions under paddy and forest soils derived from black shales: Implications for potential of long-term carbon storage
Sign Up to like & getrecommendations! Published in 2020 at "Catena"
DOI: 10.1016/j.catena.2020.105056
Abstract: Abstract Black shales are characterized by a high content of organic carbon (C). Few studies have focused on the influence of land use on soil organic C (SOC) fractions from soils derived from black shale… read more here.
Keywords: soils derived; carbon; forest soils; black shales ... See more keywords
Binding of heavy metals by oxidised kerogen in (palaeo)weathered black shales
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2018.06.025
Abstract: Abstract Sub-aerial weathering of black shales drives the gradual leaching of sulphur- and organic-bound heavy metal elements, which are usually abundant in these rocks due to depositional conditions. The formation of oxygen functional groups in… read more here.
Keywords: adsorption; black shales; partially weathered; oxidised kerogen ... See more keywords
Copper, zinc, chromium and osmium isotopic compositions of the Teplá-Barrandian unit black shales and implications for the composition and oxygenation of the Neoproterozoic-Cambrian ocean
Sign Up to like & getrecommendations! Published in 2019 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2019.05.013
Abstract: Abstract Two Neoproterozoic-Cambrian shale suites that consist of normal (NBS) and metal-rich (HMBS) black shales from the Tepla-Barrandian Unit, Bohemian Massif (Czech Republic) are studied in terms of their Cu, Zn, Cr and Re–Os isotopic… read more here.
Keywords: black shales; neoproterozoic cambrian; oxygenation neoproterozoic; isotopic ... See more keywords
Surface water oxygenation and bioproductivity – A link provided by combined chromium and cadmium isotopes in Early Cambrian metalliferous black shales (Nanhua Basin, South China)
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2020.119785
Abstract: Abstract The intrinsic link between atmospheric oxygenation, surface seawater redox and bioproductivity in the upper water column of oceans offers to combine cadmium with chromium isotopes in marine archives to deduce information on past controls… read more here.
Keywords: water; bioproductivity; surface; black shales ... See more keywords
Oceanic water chemistry evolution and its implications for post-glacial black shale formation: Insights from the Cryogenian Datangpo Formation, South China
Sign Up to like & getrecommendations! Published in 2021 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2021.120083
Abstract: Abstract The Cryogenian Nanhua Basin in South China comprises one of the best-preserved Neoproterozoic glacial-interglacial sedimentary fills. The Datangpo Formation (ca. 663–654 Ma) was deposited after the Sturtian glaciation and is characterised by extensive organic-rich… read more here.
Keywords: black shales; datangpo formation; formation; post glacial ... See more keywords
Association of uranium with macerals in marine black shales: Insights from the Upper Devonian New Albany Shale, Illinois Basin
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Coal Geology"
DOI: 10.1016/j.coal.2019.103351
Abstract: Abstract Marine organic-rich shales generally have high uranium content associated with sedimentary organic matter. However, organic matter in black shales is not homogeneous, but instead a mixture of different macerals. The uranium content and organic… read more here.
Keywords: albany shale; new albany; black shales; uranium content ... See more keywords
Petrographic and chemical structure characteristics of amorphous organic matter in marine black shales: Insights from Pennsylvanian and Devonian black shales in the Illinois Basin
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Coal Geology"
DOI: 10.1016/j.coal.2021.103676
Abstract: Abstract Amorphous organic matter (AOM or bituminite) is a major oil-prone liptinite maceral in black shales that can be classified into two main types: low-reflectance AOM and micrinized AOM. In this study, we investigated the… read more here.
Keywords: black shales; low reflectance; reflectance; micrinized aom ... See more keywords
Inverse correlation between the molybdenum and uranium isotope compositions of Upper Devonian black shales caused by changes in local depositional conditions rather than global ocean redox variations
Sign Up to like & getrecommendations! Published in 2020 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2020.01.026
Abstract: Abstract Coupled Mo-U isotope data from the Upper Devonian Kettle Point Formation (Ontario, Canada) provide a cautionary tale regarding interpretation of global ocean redox conditions using data from euxinic black shales. In the Gore of… read more here.
Keywords: global ocean; isotope; black shales; upper devonian ... See more keywords
Geochemical characteristics of the Paleogene-Neogene coals and black shales from Malaysia: Implications for their origin and hydrocarbon potential
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Natural Gas Science and Engineering"
DOI: 10.1016/j.jngse.2018.01.007
Abstract: Paleogene-Neogene coals are widespread in Malaysia, cover a wide age spectrum and are considered the source rock of hydrocarbons in Malaysia. However, they have not been studied systematically up to now. Moreover, the black shales… read more here.
Keywords: paleogene neogene; coals black; neogene coals; black shales ... See more keywords
Different accumulation mechanisms of organic matter in Cambrian sedimentary successions in the western and northeastern margins of the Tarim Basin, NW China
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Asian Earth Sciences"
DOI: 10.1016/j.jseaes.2020.104660
Abstract: Abstract Lower Cambrian black shales are widely distributed in the Tarim Basin, but those in the Keping area in the west have a high total organic carbon (TOC) content different from those in the Kuluketage… read more here.
Keywords: black shales; tarim basin; formation; yuertusi formation ... See more keywords