. Greywacke sandstone indicates: A. Active provenance tectonics and prolonged transport B. Stable provenance and prolonged trans- port C. Active provenance tectonics and less trans- port D. Stable provenance and less transport (BHU-2012)
Greywacke is a kind of sandstone in which the sand grains are set in a fine “muddy” matrix. The fine grained matrix is at once the essential characteristic of greywacke and the ess...
The answer should be C) active provenance tectonics and less transport. As greywackes have more matrix and are poorly sorted it forms due to less transport of sediments.
Answer: Active provenance and less transport
Greywacke are immature sedimentary rocks dominantly composed of framework grains like feldspar and lithic fragments with high matrix c...