Sed Rocks - Cabrillo Collegedschwartz/documents/SedRocksforpost.pdf · Sedimentary Rocks...

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What effectsRate ofChemicalWeathering?

Climate

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Anorthite

Albite

Sedimentary Rocks Classification

Clastic

Nonclastic Organic

Nonclastic Inorganic

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Sedimentary Rocks Classification

Clastic: Conglomerate, Breccia, Qtz SS, Arkose, Shale, Siltstone, Mudstone

Nonclastic Organic: Coal (carbon), Diatomite

(diatoms/algae/SiO2), Chert (protozoa/radiolarians/SiO2) and

“Limestone” (all CaCO3): Coquina (“shell hash), Chalk and

“Reef Lms or Organic Lms”

Nonclastic Inorganic: Chert (SiO2), Dolomite, Gypsum,

Evaporites, Phosphorites, Mn Nodules and “Limestone”:

Oolitic Lms, Travertine, Calcareous Tufa

Organic Sedimentary RocksCOAL

All Limestone Coral Reefs

Phylum Chlorophyta

“Green Algae”>4,000 species

Halimeda Algae“Cactus Algae”

Phylum Chlorophyta

“Green Algae”

Penecillus Algae

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Phylum Rhodophyta

Red Algae~6,000 speciessome as old as 1.2 billion years

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Foraminifera

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Coccolithophoridsor “Coccoliths”

Southeast Coast of England

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Chalk

Radiolarians

Radiolarian ChertMarin Headlands, Ca

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Calcareous Tufa

Sedimentary Rocks Classification

Clastic: Conglomerate, Breccia, Qtz SS, Arkose, Shale, Siltstone, Mudstone

Nonclastic Organic: Coal (carbon), Diatomite

(diatoms/algae/SiO2), Chert (protozoa/radiolarians/SiO2) and

“Limestone” (all CaCO3): Coquina (“shell hash), Chalk and

“Reef Lms or Organic Lms”

Nonclastic Inorganic: Chert (SiO2), Dolomite, Gypsum,

Evaporites, Phosphorites, Mn Nodules and “Limestone”:

Oolitic Lms, Travertine, Calcareous Tufa