26.3 Flashcards
Define clasts
Small rocks and minerals fragments
what types of erosion are rocks n Earth’s surface exposed to?
water, wind, and other forces
what does it mean if clasts are being transported?
Being moved from one location to another
what does it mean if clasts are being deposited?
Being dropped off at a location
define pore space?
Empty space between clasts
Define compaction
When clasts stick together due to the weight of an overlying material
Define cementation
Minerals precipitate slowly out of a water solution and crystallize in the spaced between clasts
How are sedimentary rocks formed?
Clasts will be present, they will get compacted, water flows through the pore spaces cause cementation
What is another name for clasts?
Detritus
What are sedimentary rocks called that are mostly made of clasts?
Detrital sedimetary rocks
What is the decreasing size of clasts?
gravel, sand, silt, clay/mud
What are the 4 common detrital sedimentary rocks?
gravel, sandstone, silstone, and shale
which clast size would be deposited first?
Gravel
How are chemical sedimentary rocks formed?
They form from water that contains dissolved solids, mineral crystals precipitate out of a solution through evaporations
If sedimentary rocks contain remains of living organisms what are they called?
Bio-chemical sedimentary rock
