UNIVERSITY OF SOUTH ALABAMA Last Time Online Lecture GY 111 Physical Geology 1 Mineral Stability 2 Types of weathering Physical Chemical Biological 3 Chemical weathering reactions 4 Soils Lecture 13 Sedimentary Rocks Part 1 Mineral Stability Bowen s Reaction Series Least stable at the surface Weathering Weathering the breakdown of rocks at the surface of the Earth There are 3 types of weathering 1 Physical mechanical reduction in the size of rock components 2 Chemical chemicallyinduced changes in the composition of rock Most stable at the surface Chemical Weathering 3 Biological a bit of both Chemical Weathering 1 Dissolution Solution 2 Oxidation reaction with oxygen 3 Hydrolysis reaction with water 1 Soil Profiles Types of Soils Soils come in many different flavors but Geology students in GY 111 only have to worry about 3 types A B Al aluminium Fer iron C Types of Soils Soils come in many different flavors but Geology students in GY 111 only have to worry about 3 types Types of Soils Soils come in many different flavors but Geology students in GY 111 only have to worry about 3 types cal calcium carbonate e g calcite Today s Agenda Types of Sedimentary Rocks 1 Types of Sediment 2 Sedimentary Rock Classification 3 Sediment Transport Web notes 14 GY 111 Lab Manual Chapter 3 2 Types of Sedimentary Rocks 1 siliciclastic Types of Sedimentary Rocks 1 siliciclastic 2 biochemical 3 chemical Classification of Sediment and Sedimentary Rocks Types of Sedimentary Rocks 1 siliciclastic 2 biochemical also called bioclastic Types of Sedimentary Rocks 1 siliciclastic 2 biochemical 3 chemical 4 organic Classification of Sediment and Sedimentary Rocks 3 Classification of Sediment and Sedimentary Rocks Classification of Sediment and Sedimentary Rocks Classification of Sediment and Sedimentary Rocks Classification of Sediment and Sedimentary Rocks Siliciclastic Rock Name Siliciclastic Rock Name Quartz Arenite Arkose Lithic Sandstone Greywacke Sedimentary Rocks Sedimentary Rocks 4 Sedimentary Rocks Sedimentary Rocks Sedimentary Rocks Sediment Transport Sediment Transport Sediment Transport Source transport Sink 5 Sediment Transport Sediment Transport Sediment Transport Sediment Transport Bed load sediment sand and gravel transported along the bed of a river Bed load sediment sand and gravel transported along the bed of a river Suspended load sediment clay and silt transported within the water column of a river Sediment Transport Sedimentary Structures Current Ripples Bed load sediment sand and gravel transported along the bed of a river Suspended load sediment clay and silt transported within the water column of a river Solute load dissolved minerals transported in a river http www wilderness wales co uk ww october october27 jpg 6 Sediment Transport Large current ripples Today s Homework Download and read Web Lecture 14 1 50 cm From Reineck H E and Singh I B 1980 Depositional Sedimentary Environments Springer Verlag Berlin 549p Next Time 1 Sedimentary Environments part 1 http danny oz au travel mongolia p 57086582 sand dune reflections jpg 7
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