Usually in the Neoproterozoic Katangan Supergroup, the diamictite is following respectively by the deposition of the laminated shale and the carbonate rocks. In this context, Can I call these carbonate rocks as the cap carbonate?
Dear Rzgar,
Your answer far from the Pascal's question. He is talking about cap carbonate after glaciation age, while you are talking about sealing cap carbonate in reservoir. Pascal, you can read some papers about dolomite cap carbonate in Scotland, Death Valley, Namibia. Here are some references:
Anderson, Ross P., et al. "Microstructures in metasedimentary rocks from the Neoproterozoic Bonahaven Formation, Scotland: Microconcretions, impact spherules, or microfossils?." Precambrian Research 233 (2013): 59-72.
Brasier, M. D., and G. Shields. "Neoproterozoic chemostratigraphy and correlation of the Port Askaig glaciation, Dalradian Supergroup of Scotland." Journal of the Geological Society 157.5 (2000): 909-914.
Shields, Graham A., et al. "Barite-bearing cap dolostones of the Taoudéni Basin, northwest Africa: sedimentary and isotopic evidence for methane seepage after a Neoproterozoic glaciation." Precambrian Research 153.3 (2007): 209-235.
Prave, A. R. "Two diamictites, two cap carbonates, two δ13C excursions, two rifts: the Neoproterozoic Kingston Peak Formation, Death Valley, California." Geology 27.4 (1999): 339-342.
Corsetti, Frank A., and John P. Grotzinger. "Origin and significance of tube structures in Neoproterozoic post-glacial cap carbonates: example from Noonday Dolomite, Death Valley, United States." Palaios 20.4 (2005): 348-362.
Bosak, T., et al. "Agglutinated tests in post-Sturtian cap carbonates of Namibia and Mongolia." Earth and Planetary Science Letters 308.1 (2011): 29-40.
Hoffmann, K-H., et al. "U-Pb zircon date from the Neoproterozoic Ghaub Formation, Namibia: constraints on Marinoan glaciation." Geology 32.9 (2004): 817-820.
Best regards,
