hi, could any1 tell me in basic words on "the environment and process of formation of schist and sandstone??
Since this is not my area of expertise, I searched Google under the key words "'formation process' schist sandstone" to get these possible sources:
http://www.shareyourexpertise.com/content/view/11/42/
(Broken Link Removed)
http://www.seafriends.org.nz/enviro/soil/geosoil.htm
http://www.allnaturalstone.co.uk/AboutStone.htm
http://72.14.253.104/search?q=cache:-JRG_sPUPc8J:www.sp.uconn.edu/~lliu/G229Lect05032Rockmaterial.pdf+%22formation+process%22+schist+sandstone&hl=en&ct=clnk&cd=37&gl=us&client=safari
Use <Find> within the sites for your key words. The last site contains some other terms that might be productive in expanding your search. I hope this helps. Thanks for asking.
Certainly! I can explain the basic process of formation of schist and sandstone.
Schist is a metamorphic rock that forms from the transformation of pre-existing rock types, typically from igneous or sedimentary rocks. The process begins with the deposition of sediment, such as clay or silt, which undergoes compaction and consolidation over time. As layers of sediment build up, they become buried under additional layers, creating pressure and heat.
This increase in pressure and temperature leads to a process called metamorphism, where the existing minerals in the sedimentary rock recrystallize and reorient to form schist. This recrystallization gives schist its characteristic foliated (layered) texture, with visible minerals like mica, quartz, and feldspar.
On the other hand, sandstone is a sedimentary rock that forms from the consolidation and cementation of sand grains. The process starts with the deposition of sand-sized particles, such as sand or quartz grains, in a depositional environment like beaches, deserts, or rivers.
Over time, the layers of sand accumulate and are subjected to compaction due to the weight of overlying sediment. As more sediment is deposited on top, the pressure increases, causing the grains to become tightly packed together.
The next step in sandstone formation is cementation, where minerals like silica, calcite, or iron oxide fill the spaces between the sand grains and bind them together. This process creates a solid, coherent rock structure.
Both schist and sandstone can undergo additional geological processes over millions of years, like erosion, uplift, and exposure to erosion agents such as wind and water. These processes can further shape and transform the rocks into different geological formations.
I hope this explanation helps you understand the basic environment and process of formation for schist and sandstone!