Changes

==Quartz arenite provenance==

==Quartz arenite provenance==

Quartz arenite is sandstone which has a granular silica composition more than 90 percent of which consists of quartz, [[chert]], and quartzose rock fragments. In general, its color is light gray. But, it can occur with a pink, yellow, or brown color due to iron oxide. This sandstone usually lithified and cemented by silica and carbonate cement. Usually associated with cratonic, aeolian, beaches and continental shelf environment. Usually deposited shallow marine carbonate interlayered with feldspar and sandstones. In general have a maturity ranging from mature to supermature. Quartz wacke rarely formed. Usually forming sedimentary structures like cross-bedding, and quite often also formed ripple marks. Fossils are rare because usually deposited in an environment that very difficult to preserve fossils like the eolian environments. Pettijohn (1963) says that this type of sandstone make up one third of the total sandstones. Quartz arenite can be formed from the deposition of the first cycle of crystalline igneous or metamorphic rocks, and repeated destruction of quartz grains in sedimentary rocks.

Quartz arenite is sandstone which has a granular silica composition more than 90 percent of which consists of quartz, [[chert]], and quartzose rock fragments. In general, its color is light gray. But, it can occur with a pink, yellow, or brown color due to iron oxide. This sandstone usually lithified and cemented by silica and carbonate cement. Usually associated with cratonic, aeolian, beaches and continental shelf environment. Usually deposited shallow marine carbonate interlayered with feldspar and sandstones. In general have a maturity ranging from mature to supermature. Quartz wacke rarely formed. Usually forming sedimentary structures like [[cross-bedding]], and quite often also formed ripple marks. Fossils are rare because usually deposited in an environment that very difficult to preserve fossils like the eolian environments. Pettijohn (1963) says that this type of sandstone make up one third of the total sandstones. Quartz arenite can be formed from the deposition of the first cycle of crystalline igneous or metamorphic rocks, and repeated destruction of quartz grains in sedimentary rocks.

==Feldsphatic arenite provenance==

==Feldsphatic arenite provenance==