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What may happen to a rock/mineral is that the softer layers of a rock that are closest to the surface get weathered or eroded away while the harder center parts do not. This usually results in interesting and uneven rock shapes. Also, some weathering isn't exactly even in terms of the surface of a rock.
What else can I help you with?
Rocks changed in form from sedimentary or igneous rocks?
Are meatmorphic rocks and also perhaps soil.
What else can sedimentary rocks form from?
All rocks can form from sedimentary because the rock cycle is endless.
What is in the formation of igneous rocks but not in formation of metamorphic rocks?
igneous rocks form within earths surface
What is the or-gin of sedimentary rocks?
weathering of preexisting rocks form clastic sedimentary rocks, Oversaturated water basins form chemical sedimentary rocks after the water evaporates and dead sea organisms settle at the bottom forming biochemical sedimentary rocks.
How do gabbro and basalt rocks form?
The magma cools and forms both rocks
Compare the histories of rounded smooth rocks and angular uneven rocks?
Rounded smooth rocks typically originate from processes like erosion and river transport, where water gradually shapes them over time, resulting in their smooth appearance. In contrast, angular uneven rocks are often formed through geological processes such as volcanic activity or fracturing, which leave them with sharp edges and irregular shapes. The history of rounded rocks is often linked to their journey through water, while angular rocks often reflect their origins in solid geological formations. Both types of rocks tell unique stories about their formation and the environmental conditions they experienced.
A break that separates older metamorphic rocks form younger sedimentary rocks immediately above them is a type of unconformity called an?
a nonconformity
What are angular sediments?
Angular sediments are sedimentary particles that have sharp or angular edges. They are typically derived from the erosion and fragmentation of pre-existing rocks and have not undergone significant rounding through transport. Angular sediments are often found close to their source and can provide clues about the geological processes that formed them.
What are rough textured rocks?
Rocks with a large grain size perhaps with angular grain shapes.
What name is given to layers of tilted rocks that are overlain by younger more flat lying rock layers?
angular unconformity
How to solve problems of uneven stone engraving?
You can manually using water jet machine can engraving on uneven rocks.
What rocks are a mix of sharp angular pebbles?
A sedimentary rock called "breccia". The sharp angular pebbles making up the breccia could be igneous, sedimentary, or metamorphic. Breccias generally form close to the point of origin of the clast rock, having less time to round those sharp angular edges.
What is the gradual rounding of corners and edges of angular blocks of rocks?
spheroidal weathering
What. Type of unconformity consists of tilted sedimentary rocks that are overlain by younger more flat lying sedimentary rocks?
angular unconformity
What is the gradual rounding of the corners and edges of angular blocks of rocks called?
Spheroidal weathering
What causes the difference between breccias and conglomerante?
The difference between breccias and conglomerate is that breccias are angular and conglomerates are smooth. What causes rocks to be smooth is transportation, such as when rocks are in a stream and are worn down. Therefore transportation is what causes the difference between breccias and conglomerates.
What term describes an erosional surface bounded above by flat-lying sedimentary rocks and below by igneous or metamorphic rocks?
nonconformity
