Stratigraphy_Lecture - Today: Stratigraphy (Chapter 13)...

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Today: Stratigraphy (Chapter 13) Next Time: Vertebrates Part I (Chapter 15)
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Principles of Stratigraphy Law of superposition Principle of original horizontality Principle of lateral continuity Cross-cutting relationships Rule of inclusions Principle of faunal succession Index Fossils Correlation Relative Time Chapter 13: Reading the strata Next lecture: Chapter 15 - Vertebrates
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Principles of Stratigraphy stratigraphy : science of interpreting spatial and temporal relationships among rock layers.
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1. Law of Superposition Oldest rocks are on the bottom and youngest rock are on the top. youngest oldest Principles of Stratigraphy youngest oldest
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Principles of Stratigraphy (academic emporia.edu) youngest? oldest? older younger older younger
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Keystone thrust, NV older younger Images from Joe Reese
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Fig. 9.17d Stephen Marshak Image from Joe Reese
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Principles of Stratigraphy 1. Principle of Original Horizontality Sediments are deposited at the earth’s surface in flat layers.
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Principles of Stratigraphy crossbedding exception (sort of)
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Image from Joe Reese
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Principles of Stratigraphy 1. Principle of Lateral Continuity Sedimentary strata form laterally continuous layers until: abut against older rock pinch out truncated by erosion cut by fault
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correlate : match equivalent strata fault erosion Principles of Stratigraphy
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4. Cross-Cutting Relationships
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This note was uploaded on 09/14/2009 for the course GEO 401 taught by Professor Lassiter during the Spring '08 term at University of Texas at Austin.

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Stratigraphy_Lecture - Today: Stratigraphy (Chapter 13)...

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