Do you think trace element ratios ( Ni/Co, V/Cr, V(V+ Ni) Cu/Zn, U/Th etc ) which are diagnostic of paleo depositional environment/Paleo-redox condition/ in mudrocks or coals can also be be used as a proxy to constrain paleo-depositional signatures in sandstones?
Hello
Please, see the manuscript below. I think that you will have answers.
Jianhua Zhao et al., 2016
Applying sedimentary geochemical proxies for paleoenvironment
interpretation of organic-rich shale deposition in the Sichuan Basin, China
Thank you for your contribution. Applying sedimentary geochemical proxies for paleoenvironmental studies in shales and coals are well documented in literature.
However the question is specifically talking about sandstones/sands and not organic rich shale.
Hi. In terms of minerals, an important ratio for paleoenvironmental studies in sandstones is the quartz/feldspars ratio, because feldspars are higher, closer the source rock. In this way, Si/K and Si/Ca could be good proxies. Test it, please.
Thank you for your contribution Prof.
In my question, I specifically mentioned trace element ratios and not Si/K and Si/Ca . However, in order to test it like you suggested, can you please kindly suggest literatures where Si/K and Si/Ca have been used to constrain depositional environment ? This is because knowing the thresholds for the indicators is very crucial in the interpretation process.
Please, check these references:
Burdige, D. (2006). Geochemistry of Marine Sediments. New Jersey: Princeton University Press.
Denny, M. (2008). How the Ocean Works: An Introduction to Oceanography.
Princeton University Press.
Freire, A.F.M. (2010) An Integrated Study on the Gas Hydrate Area of Joetsu Basin, Eastern Margin of Japan Sea, using Geophysical, Geological and Geochemical Data. PhD Thesis, The University of Tokyo, 247 pp.
Lisitzin, A.P. (1996). Oceanic Sedimentation: Lithology and Geochemistry.
Washington DC: Ameican Geophysical Union.
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