Physical Geology Lecture Notes PDF

Physical Geology Prof. Dr. Raafat Zaki Dr. Ahmed Gomaa Lecture 7 Sedimentary Rocks Physical Geology (G101) Dr. Ahmed Gomaa Physical Geology (G101) Dr. Ahmed Gomaa Clastic sedim...

Physical Geology Prof. Dr. Raafat Zaki Dr. Ahmed Gomaa Lecture 7 Sedimentary Rocks Physical Geology (G101) Dr. Ahmed Gomaa Physical Geology (G101) Dr. Ahmed Gomaa Clastic sedimentary rocks Physical Geology (G101) Dr. Ahmed Gomaa Grain size Physical Geology (G101) Dr. Ahmed Gomaa Physical Geology (G101) Dr. Ahmed Gomaa Physical Geology (G101) Dr. Ahmed Gomaa Arenaceous rocks Physical Geology (G101) Dr. Ahmed Gomaa  Quartz arenite Physical Geology (G101) Dr. Ahmed Gomaa  Feldspathic arenite Physical Geology (G101) Dr. Ahmed Gomaa  Lithic arenite Physical Geology (G101) Dr. Ahmed Gomaa Quartz wacke Physical Geology (G101) Dr. Ahmed Gomaa Argillaceous rocks Physical Geology (G101) Dr. Ahmed Gomaa  Chemical sedimentary rocks Physical Geology (G101) Dr. Ahmed Gomaa  Biochemical sedimentary rocks Fossiliferous limestone Physical Geology (G101) Dr. Ahmed Gomaa Biochemical sedimentary rocks phosphates Physical Geology (G101) Dr. Ahmed Gomaa Biochemical sedimentary rocks Coal Physical Geology (G101) Dr. Ahmed Gomaa Sedimentary Primary sedimentary structures structures Physical Geology (G101) Dr. Ahmed Gomaa Primary sedimentary structures Cross bedding Physical Geology (G101) Dr. Ahmed Gomaa  Primary sedimentary structures Graded bedding Physical Geology (G101) Dr. Ahmed Gomaa Primary sedimentary structures Mud cracks Physical Geology (G101) Dr. Ahmed Gomaa Primary sedimentary structures Ripple marks Physical Geology (G101) Dr. Ahmed Gomaa  What is Weathering? Decomposition and disintegration of rocks and minerals at the earth’s surface. Weathering itself involves little or no movement of the decomposed rocks What is Erosion? Removal of weathered material from its place by water, wind, glaciers and gravity. Are they the same?? NO! Physical Geology (G101) Dr. Ahmed Gomaa Types of weathering Physical weathering (Mechanical) disintegration/disaggregation of rocks but not altered. Chemical weathering Decomposition of rocks and minerals by air and water chemical reactions. Physical Geology (G101) Dr. Ahmed Gomaa  Mechanical weathering Pressure release Physical Geology (G101) Dr. Ahmed Gomaa  Mechanical weathering Frost (Ice) Wedging Physical Geology (G101) Dr. Ahmed Gomaa  Mechanical weathering Abrasion Physical Geology (G101) Dr. Ahmed Gomaa Mechanical weathering Thermal expansion and contraction Physical Geology (G101) Dr. Ahmed Gomaa Mechanical weathering Biological activity Physical Geology (G101) Dr. Ahmed Gomaa Chemical Weathering Dissolution Physical Geology (G101) Dr. Ahmed Gomaa Chemical Weathering Hydrolysis Physical Geology (G101) Dr. Ahmed Gomaa Chemical Weathering Oxidation Physical Geology (G101) Dr. Ahmed Gomaa  Thanks a lot Physical Geology (G101) Dr. Ahmed Gomaa