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Sedimentary Rocks. I.Sediment A. Introduction Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification.

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Presentation on theme: "Sedimentary Rocks. I.Sediment A. Introduction Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification."— Presentation transcript:

1 Sedimentary Rocks

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3 I.Sediment A. Introduction

4 Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification

5 Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification 1) Weathering and Erosion

6 Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification 1) Weathering and Erosion 2) Transportation

7 Sedimentary Rocks I.Sediment A. Introduction B. Process that leads to Lithification 1) Weathering and Erosion 2) Transportation 3) Deposition

8 Sedimentary Rocks B. Process that leads to Lithification 1) Weathering and Erosion 2) Transportation 3) Deposition 4) Lithification

9 Sedimentary Rocks B. Process that leads to Lithification 1) Weathering and Erosion 2) Transportation 3) Deposition 4) Lithification *cementation and compaction

10 Sedimentary Rocks II. Composition of Sed. Rocks

11 Sedimentary Rocks II. Composition of Sed. Rocks A. Clay

12 Sedimentary Rocks II. Composition of Sed. Rocks A.Clay (multiple meanings) 1. size (0.004 mm)

13 Sedimentary Rocks II. Composition of Sed. Rocks A.Clay (multiple meanings) 1. size (0.004 mm) 2. Mineralogy

14 Sedimentary Rocks II. Composition of Sed. Rocks A.Clay (multiple meanings) 1. size (0.004 mm) 2. Mineralogy * kaolinite

15 Sedimentary Rocks II. Composition of Sed. Rocks A.Clay (multiple meanings) 1. size (0.004 mm) 2. Mineralogy * kaolinite *illite

16 Sedimentary Rocks 1. size (0.004 mm) 2. Mineralogy * kaolinite *illite *montmorillonite

17 Sedimentary Rocks II. Composition of Sed. Rocks A.Clay B.Quartz (SiO 2 ) “flint”, “chert”

18 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

19 Sedimentary Rocks II. Composition of Sed. Rocks A.Clay B.Quartz C.Calcite (CaCO 3 )

20 Sedimentary Rocks II. Composition of Sed. Rocks A.Clay B.Quartz C.Calcite D.Other Minerals…..

21 Sedimentary Rocks III. Formation of Sedimentary Rocks A. Detrital (Clastic)

22 Sedimentary Rocks III. Formation of Sedimentary Rocks A.Detrital (Clastic) B.Chemical

23 Sedimentary Rocks III. Formation of Sedimentary Rocks A.Detrital (Clastic) B.Chemical C.Biochemical

24 Sedimentary Rocks IV. Morphology (texture) A.Definition of texture: “the size and shape of the particle that make up the rock.”

25 Sedimentary Rocks IV. Morphology (texture) A.Definition of texture: “the size and shape of the particle that make up the rock.” B. Size

26 Wentworth Scale

27 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

28 Sedimentary Rocks C. Shape 1. Roundness

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30 Sedimentary Rocks C. Shape 1. Roundness 2. Sphericity

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32 Sedimentary Rocks IV. Morphology (texture) D. Maturity

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34 Sedimentary Rocks V. Types of Sedimentary Rocks A.“The Model” for clastic rocks

35 A.“The Model”

36 B. Descriptions of individual clastic rocks Breccia Conglomerate

37 B. Descriptions of individual clastic rocks Arkose Graywacke Quartz Sandstone

38 B. Descriptions of individual clastic rocks Siltstone Shale/Mudstone

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40 C.Chemical and Biochemical Rocks Limestones Micrite Calcarenite

41 Limestones Chalk Coquina Fossiliferous

42 Limestones Oolitic

43 C.Chemical and Biochemical Rocks Limestones Dolomites

44 C.Chemical and Biochemical Rocks Chert Coal (Bituminous)

45 C.Chemical and Biochemical Rocks Evaporites (Halite and Gypsum)

46 Sedimentary Rocks VI. Features of Sedimentary Rocks

47 A. Bedding

48 Bedding

49 Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks

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51 Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks C.Ripple Marks

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55 Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks C.Ripple Marks D.Cross Bedding

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59 Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks C.Ripple Marks D.Cross Bedding E.Graded Bedding

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62 Sedimentary Rocks VI. Features of Sedimentary Rocks A.Bedding B.Mud Cracks C.Ripple Marks D.Cross Bedding E.Graded Bedding F.Fossils

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