Lithic sandstone: Difference between revisions
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'''Lithic sandstones''', or '''lithic arenites''', or '''litharenites''', are [[sandstone]]s with a significant (>5%) component of [[lithic fragments]], though [[quartz]] and [[feldspar]] are usually present as well, along with some [[matrix (geology)|clayey matrix]]. Lithic sandstones can have a speckled (salt and pepper) or gray color, and are usually associated with one specific type of lithic fragment (i.e., [[igneous]], [[sedimentary]], or [[metamorphic]]).<ref>Prothero, D. R. and Schwab, F., 1996, Sedimentary Geology, pg. 100, ISBN 0-7167-2726-9</ref> |
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#REDIRECT [[lithic sandstones]] |
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Tectonically, lithic sandstones often form in a wide variety [[sedimentary depositional environment]]s (including [[fluvial]], [[river delta|deltaic]], and [[alluvial]] sediments) associated with [[active margin]]s. This [[tectonic]] setting provides the source of the lithic fragments, either through [[arc volcanism]], [[Thrust_tectonics#Thin-skinned_deformation|thin-skinned faulting]], [[Thrust_tectonics#Collisional_zones|continental collisions]], [[unroofing]], and [[subduction roll-back]]. |
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[[Category:Sedimentary Rocks]] |
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Revision as of 20:05, 22 September 2009
Lithic sandstones, or lithic arenites, or litharenites, are sandstones with a significant (>5%) component of lithic fragments, though quartz and feldspar are usually present as well, along with some clayey matrix. Lithic sandstones can have a speckled (salt and pepper) or gray color, and are usually associated with one specific type of lithic fragment (i.e., igneous, sedimentary, or metamorphic).[1]
Tectonically, lithic sandstones often form in a wide variety sedimentary depositional environments (including fluvial, deltaic, and alluvial sediments) associated with active margins. This tectonic setting provides the source of the lithic fragments, either through arc volcanism, thin-skinned faulting, continental collisions, unroofing, and subduction roll-back.
- ^ Prothero, D. R. and Schwab, F., 1996, Sedimentary Geology, pg. 100, ISBN 0-7167-2726-9
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