TITLE INTRODUCTION DETRITAL ROCKS CHEMICAL ROCKS BIOCHEMICAL ROCKS
ENVIRONMENTAL CLUES CREDITS
WHAT IS SEDIMENT?
changing sediment to rock sedimentary rocks record Earth's history
sedimentary rocks are an important resource three groups of sedimentary rocks
Sediment is loose, hard material lying on top of solid rock. Sediment comes in many forms and sizes, and can originate from a variety of sources. Detrital sediment is produced by the weathering and erosion of rocks exposed at Earth's surface. Chemical sediment forms as minerals crystallize and settle from water that contains lots of dissolved particles. Biochemical sediment accumulates as plants and animals die and their hard parts, such as skeletons and shells, are deposited on the ocean floor.
detrital sediment chemical sediment biochemical sediment
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