sedrocks1

sedrocks1 - Sedimentary Rocks A sedimentary rock is formed...

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Unformatted text preview: Sedimentary Rocks A sedimentary rock is formed by the accumulation and compaction of sediments (rock pieces, minerals, animal parts, or chemical precipitates) Sediments are derived from weathering of rocks Chemical weathering dissolution or decomposition of minerals grains due to chemical reactions Bowens Reaction Series : The last minerals to crystallize are the most resistant to weathering. Susceptible to weathering Resistant to weathering Mechanical weathering Breakage of rock due to cracking, scratching, crushing, freezing, thawing, and abrasion There are 3 different types of sediments 1) Detrital (clastic) sediments Pieces of eroded rock fragments and minerals grains. Sediments of this type form Detrital Sedimentary Rocks There are 3 different types of sediments Detrital (clastic) sediments Pieces of eroded rock fragments and minerals grains. Sediments of this type form Detrital Sedimentary Rocks Chemical sediments Minerals precipitated from water due to chemical reactions (ex. calcite, gypsum, halite). These sediments form Chemical Sedimentary Rocks There are 3 different types of sediments Detrital (clastic) sediments Pieces of eroded rock fragments...
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sedrocks1 - Sedimentary Rocks A sedimentary rock is formed...

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