Pleasse, help out with question below In the table below fill in the key charact
ID: 108554 • Letter: P
Question
Pleasse, help out with question below
In the table below fill in the key characteristics used to identify the sedimentary rocks listed and indicate the depositional environment in which they form. Answer the following: A. You are given a rock sample with crystals that are the same color and size. Is the rock foliated or non foliated? B. The texture of metamorphic rocks can guide you to identify the grade of metamorphism that has occurred. If you are given a Gneiss what grade of metamorphism would you assign to this sample?Explanation / Answer
Conglomerate: 1)conglomerate is a coarse grained clastic sedimentary rock.
2)It consists of large rounded classes which are binded with the binding matrix of chemical cement,sand and mud.
3)It consists of weathered material or rock fragments which are washed downstream or down current through streams and cannals.
4)They are of many sizes.The largest round clast is five centimeters each.
Depositional environment: Occurs at deep water marine,streams channel, alluvial deposits,current waves,glacier deposits.
Breccia: characteristics:
1) It is composed of broken fragments of rock materials and are cemented by a fine grained materials.
2)They are of various colors.
3)These are formed by submarine debris flow.
Depositional environment:
Occurs at the beach deposits,submarine debris.
Sandstone: characteristics:
1) It consists of porous material.
2)It is formed due to sheets of sand,mineral particles,silt and there are binded through the binding material like clay.
3) permeable material passes water through it.
Depositional environment:
Occurs at stream channel,desert dune,glacier outwash,lake,Delta,beach,tidal flat,shelf platform.
Siltstone:1)It is made of fine grained sand materials.
2)It occurs in colors of gray,brown,reddish,green,purple,orange and black.
Depositional environment:
Occurs at Delta,tidal flat.
Carbonate rich mudstone: 1) extremely fine grained.
2)consists of clay and silt materials.
3)color of it is black,grey,red,brown green etc.
Depositional environment: It occurs at Delta,tidal flat,slope rise,deep Marine areas.
Bioclastic limestone:
1) the bioclastic material s or skeleton fossils that are formed on the sedimentary rock especially limestone.
Depositional environment: occurs at the lake,shelf platform,reef,deep Marine.