19_416M_Carbonate Precipitation Modes and Factories_handoutfullnote

19_416M_Carbonate Precipitation Modes and Factories_handoutfullnote

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Modes of Carbonate Precipitation Abiotic Precipitates where biotic effects are negligible Biotically Induced Precipitates where the organism sets the process  in motion , but where organismal influence cease after the initial step Biotically controlled Precipitates where the organism determines the location, beginning and end of the process. Key in carbonates! 1 e.g., marine evaporites e.g., all skeletal carbonates e.g., microbialite inorganic thermodynamics and reaction kinetics metabolism of plants and animals Reading: Ch2 in Carbonate sedimentology and sequence stratigraphy by Schlager
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Biotically Controlled Carbonate Producers 2 Almost exclusively photo-autotrophic: Photosynthesis But live in symbiosis with autotrophic algae generate organic matter from dissolved substance and sunlight require particular organic matter for food
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Carbonate Factories Tropical Shallow Water Warm, sunlit waters w/low nutrients 30° N to 30°S latitude today
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19_416M_Carbonate Precipitation Modes and Factories_handoutfullnote

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