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10/4/2017
1
5
What effectsRate ofChemicalWeathering?
Climate
?
?
Anorthite
Albite
Sedimentary Rocks Classification
Clastic
Nonclastic Organic
Nonclastic Inorganic
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2
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