Sedimentary Rocks
I.Sediment A. Introduction
Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification
Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification 1) Weathering and Erosion
Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification 1) Weathering and Erosion 2) Transportation
Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification 1) Weathering and Erosion 2) Transportation 3) Deposition
Sedimentary Rocks B. Process that leads to Lithification 1) Weathering and Erosion 2) Transportation 3) Deposition 4) Lithification
Sedimentary Rocks B. Process that leads to Lithification 1) Weathering and Erosion 2) Transportation 3) Deposition 4) Lithification *cementation and compaction
Sedimentary Rocks II. Composition of Sed. Rocks
Sedimentary Rocks II. Composition of Sed. Rocks A. Clay
Sedimentary Rocks II. Composition of Sed. Rocks A.Clay (multiple meanings) 1. size (0.004 mm)
Sedimentary Rocks II. Composition of Sed. Rocks A.Clay (multiple meanings) 1. size (0.004 mm) 2. Mineralogy
Sedimentary Rocks II. Composition of Sed. Rocks A.Clay (multiple meanings) 1. size (0.004 mm) 2. Mineralogy * kaolinite
Sedimentary Rocks II. Composition of Sed. Rocks A.Clay (multiple meanings) 1. size (0.004 mm) 2. Mineralogy * kaolinite *illite
Sedimentary Rocks 1. size (0.004 mm) 2. Mineralogy * kaolinite *illite *montmorillonite
Sedimentary Rocks II. Composition of Sed. Rocks A.Clay B.Quartz (SiO 2 ) “flint”, “chert”
High Temp (1300 C) Low Temp (600 C) OlivineCa Plagioclase Feldspar Ca-Na Plagioclase FeldsparPyroxene AmphiboleNa-Ca Plagioclase Feldspar Biotite Na Plagioclase Feldspar Orthoclase Feldspar Muscovite Quartz
Sedimentary Rocks II. Composition of Sed. Rocks A.Clay B.Quartz C.Calcite (CaCO 3 )
Sedimentary Rocks II. Composition of Sed. Rocks A.Clay B.Quartz C.Calcite D.Other Minerals…..
Sedimentary Rocks III. Formation of Sedimentary Rocks A. Detrital (Clastic)
Sedimentary Rocks III. Formation of Sedimentary Rocks A.Detrital (Clastic) B.Chemical
Sedimentary Rocks III. Formation of Sedimentary Rocks A.Detrital (Clastic) B.Chemical C.Biochemical
Sedimentary Rocks IV. Morphology (texture) A.Definition of texture: “the size and shape of the particle that make up the rock.”
Sedimentary Rocks IV. Morphology (texture) A.Definition of texture: “the size and shape of the particle that make up the rock.” B. Size
Wentworth Scale
Sedimentary Rocks IV. Morphology (texture) A.Definition of texture: “the size and shape of the particle that make up the rock.” B. Size C. Shape
Sedimentary Rocks C. Shape 1. Roundness
Sedimentary Rocks C. Shape 1. Roundness 2. Sphericity
Sedimentary Rocks IV. Morphology (texture) D. Maturity
Sedimentary Rocks V. Types of Sedimentary Rocks A.“The Model” for clastic rocks
A.“The Model”
B. Descriptions of individual clastic rocks Breccia Conglomerate
B. Descriptions of individual clastic rocks Arkose Graywacke Quartz Sandstone
B. Descriptions of individual clastic rocks Siltstone Shale/Mudstone
C.Chemical and Biochemical Rocks Limestones Micrite Calcarenite
Limestones Chalk Coquina Fossiliferous
Limestones Oolitic
C.Chemical and Biochemical Rocks Limestones Dolomites
C.Chemical and Biochemical Rocks Chert Coal (Bituminous)
C.Chemical and Biochemical Rocks Evaporites (Halite and Gypsum)
Sedimentary Rocks VI. Features of Sedimentary Rocks
A. Bedding
Bedding
Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks
Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks C.Ripple Marks
Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks C.Ripple Marks D.Cross Bedding
Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks C.Ripple Marks D.Cross Bedding E.Graded Bedding
Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks C.Ripple Marks D.Cross Bedding E.Graded Bedding F.Fossils