2008
DOI: 10.1016/j.earscirev.2007.07.001
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Orogenesis vs. diagenesis: Can we use organic-rich shales to interpret the tectonic evolution of a depositional basin?

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Cited by 23 publications
(8 citation statements)
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“…Clay minerals in black shales typically show a strong light REE enrichment as seen in shales worldwide (ESC: Haskin and Haskin, 1966;NASC: Haskin et al, 1968;PAAS: Taylor and McLennan, 1985) (e.g., Pollack et al, 2009;Fu et al, 2010). Phosphates may also significantly contribute to the REE budget of black shales (Lev et al, 1999(Lev et al, , 2008. Even when their modal abundance is very low, very high REE contents with a strong enrichment of the light REE as known from monazite or apatite can dominate the REE budget of black shales.…”
Section: Geochemical and Isotopic Constraints On The Nature And Age Omentioning
confidence: 97%
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“…Clay minerals in black shales typically show a strong light REE enrichment as seen in shales worldwide (ESC: Haskin and Haskin, 1966;NASC: Haskin et al, 1968;PAAS: Taylor and McLennan, 1985) (e.g., Pollack et al, 2009;Fu et al, 2010). Phosphates may also significantly contribute to the REE budget of black shales (Lev et al, 1999(Lev et al, , 2008. Even when their modal abundance is very low, very high REE contents with a strong enrichment of the light REE as known from monazite or apatite can dominate the REE budget of black shales.…”
Section: Geochemical and Isotopic Constraints On The Nature And Age Omentioning
confidence: 97%
“…This suggests that clay and/or phosphate minerals are the major source for the REE budget of the residues. It has been shown that the light REE components of black shales and therefore the Sm-Nd isotope system may be reorganized by post-depositional processes like diagenesis and subsequent thermal overprints due to the formation and dissolution of phosphates and to a generally higher mobility of the light REE as compared to the heavy REE (Hannigan and Basu, 1998;Lev et al, 1999Lev et al, , 2008Chakrabarti et al, 2007). The statistically identical Sm-Nd ages and initial Nd isotope ratios calculated for magnesite fractions of different samples, on the one hand, and for carbonate fractions and residues of individual specimens, on the other hand, from the Breitenau deposit document that isotopic resetting in the black matrix and in the carbonate component occurred simultaneously.…”
Section: Geochemical and Isotopic Constraints On The Nature And Age Omentioning
confidence: 97%
“…The maximum uranium concentration in those shales reaches 320 lg/g. Uranium in Devonian shale in the Appalachian Basin of the eastern USA, in the Parkhouse marine shale from the Late Carboniferous in the UK and in the Timahdit black shale in Morocco are all abundant, with concentrations of 2-36 lg/g, >8 lg/g and 41 lg/g, respectively (Lev and Filer, 2004;Lev et al, 2008;Fisher, 2001;Galindo et al, 2007). In China, the best-known uranium-rich strata are Lower Silurian and Lower Cambrian black shales that occur in the Yangtze Platform with a uranium concentration >10 lg/g.…”
Section: Introductionmentioning
confidence: 99%
“…And clay mineral index is commonly applied to unearth the original depositional environment (Singer, ). Moreover, the ternary plots of clay minerals, quartz, and feldspars and carbonate are commonly adopted to directly show the composition of shale (Lev, Filer, & Tomascak, ; Zhao et al, ).…”
Section: Introductionmentioning
confidence: 99%