A dis-conformity is an unconformity representing a period of erosion or lack of deposition in a sedimentary rock section.
No, the Grand Canyon is a river valley eroded into rock - as such it is an absence of rock. However the rocks through which the river has eroded are, in the main, of sedimentary origin.
Sedimentary rock
If the original rock is eroded or broken away and then returned to sedimentary-forming conditions, it will form another sedimentary.
If eroded, deposited, compacted and cemented, it becomes clastic sedimentary rock.
No. Any rock at the surface can be eroded, deposited as sediment, and then lithified into sedimentary rock. Most rock that melts into magma goes through a metamorphic phases first, however.
No. It is called an unconformity. A fault is a fracture along which blocks of rock have moved relative to one another.
The Vishnu Schist was exposed when sedimentary layers above it were eroded
It is called an erection.
Sedimentary rocks are by definition composed of little pieces of eroded rocks. So, yes!
The presence of geodes appearing on the surface of a given locality is dependent on the geologic history of that area. Geodes are usually found in areas of exposed and eroded sedimentary rock. The shell of the geode, often quartz, weathers less vigorously than the entrapping rock, usually calcitic or dolomitic limestone. In northern lattitudes, glacial deposits may have covered up the geodes and sedimentary rock, or perhaps the sedimentary rock layer did not exist previously or has eroded away completely.
sedimentary
It can change when it is eroded and weathered.
The rock described would be a clastic sedimentary rock.
No, the Grand Canyon is a river valley eroded into rock - as such it is an absence of rock. However the rocks through which the river has eroded are, in the main, of sedimentary origin.
The grain of sand becomes a sedimentary rock when it gets erosion and is deposited on the bottom of a body of water. Then the eroded sand builds up and becomes a sedimentary rock if there is enough eroded sand.
Sedimentary rock
If the original rock is eroded or broken away and then returned to sedimentary-forming conditions, it will form another sedimentary.