The three main methods used to date sedimentary rocks ...

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Principles of stratigraphy • <strong>The</strong> meaning of “correlation” • Types of stratigraphic unit • Methods of dating and correlation - biostratigraphy - radiometric dating - magne<strong>to</strong>stratigraphy - chemostratigraphy • Construction of the geological time scale
Correlation: • Correlation is the act of comparing and connecting stratigraphic data sets from outcrop or drill records on the basis of -lithology (lithostratigraphy) -fossil content (biostratigraphy = relative age) -chronostratigraphy (“absolute” age) -allostratigraphy (unconformity-bounded successions of strata) -genetic allostratigraphy = sequence stratigraphy
Page 1: Principles of stratigraphy
Page 5 and 6: Formal lithostratigraphy • The Fo
Page 7 and 8: Allostratigraphy Lithostratigraphic
Page 9 and 10: Lithostratigraphy versus Allostrati
Page 11 and 12: Correlation by wireline log Recogni
Page 13 and 14: The three main methods used to date
Page 15 and 16: A boundary where “nothing happene
Page 17 and 18: Use of fossils to establish biozone
Page 19 and 20: Subsurface biostratigraphy: The pro
Page 21 and 22: Constraints on the use of fossils t
Page 23 and 24: Use of palynostratigraphy to correl
Page 25 and 26: Using radiometric ages to date even
Page 27 and 28: Application of magnetostratigraphy
Page 29: Terminology for Stratigraphic subdi
Page 32 and 33: Most of the standard names of eras,
Page 34 and 35: From www.stratigraphy.org
Page 36: Summary 2 • Correlation: - “Loo

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