Sedimentary Petrology

jess.y1994
Mind Map by jess.y1994, updated more than 1 year ago
jess.y1994
Created by jess.y1994 almost 7 years ago
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Geology Mind Map on Sedimentary Petrology, created by jess.y1994 on 04/17/2013.
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Sedimentary Petrology
1 Formed from the weathering +erosion, transportation and deposition of igneous and metamorphic rocks
2 Main controls on weathering
2.1 Local weather conditions/ climate
2.1.1 Physical/ Chemical properties of the parent rock
2.1.1.1 Relief and morphology of land forms
2.1.1.1.1 Vegetation type/ cover
3 Methods of transportaion
3.1 Gravity
3.1.1 Water
3.1.1.1 Wind
3.1.1.1.1 Ice
3.2 The power and material available influences whether they transport material as aggregates or particles
4 Different transporting agents modify the grains
4.1 Reduction in size
4.1.1 Increase in roundness
4.1.1.1 Changes to surface texture
4.1.1.1.1 Sorting of grains
4.1.1.1.1.1 Continued weathering
5 Mineral maturity
5.1 Super mature - Quartz
5.1.1 Mature - Quartz + other minor constituents
5.1.1.1 Quartz, feldspar, mica + rare lithic grains
5.1.1.1.1 Range of lithic grains + other materials
6 Siliclastic rocks
6.1 Burial = compaction
6.1.1 Reduced pore spaces
6.1.1.1 Grain deformation (plastic, flexive, pressure)
6.1.1.1.1 Production of psuedomatrix
6.1.1.1.1.1 Dewatering
7 Cementation
7.1 Calcite
7.1.1 Silica
7.1.1.1 Iron Oxide
8 Causes of diagenetic change
8.1 Chemistry of the environment
8.1.1 Depth of burial
8.1.1.1 Temperature
8.1.1.1.1 Pressure
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