Earth Science Quiz #16 - Sedimentary Rocks
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13 Terms
Sedimentary Rocks are broken up into how many classes
3
Three classes of sedimentary rocks
clastic, chemical, organic
What are clastic sedimentary rocks
rocks that were formed by the transport, deposition, compation, and cementation of sediment.
What are chemical sedimentary rocks
crystalline sedimentary rocks formed from the precipitation of mineral matter from earth water
What are organic sedimentary rocks
sedimentary rocks composed of the remains of once living organisms
stratification
the layering of rocks
cross bedding
layering that is at an angle to the main rock layers formed by the movement of ripples and dunes
ripple marks
wavelength ridges formed by the movement of wind and water
fossils
naturally preserved impression of once living organisms
clast
fragment of pre-existing rock
Conglomerate
rounded clasts
Breccia
angular clast
sorting
the degree of similarity of particle size
