'Unconformities' diaporamas de présentation

GEOL 3000 Geologic Maps

567 views • 27 slides

647 views • 23 slides

Relative Dating

Relative Dating. Original Horizontality. Layers of sediment are deposited evenly, with each new layer formed horizontally over older layers. Superposition. In an undeformed sequence of rocks, each layer is younger than the one below. Cross Cutting.

323 views • 15 slides

N. Lindsley-Griffin, 1999

Prote r ozoic. Qu at ernary. Creta c eous. The Geologic Column [Fig. 3.8, p. 64]. N. Lindsley-Griffin, 1999. Dating the Geologic Time Scale. Sedimentary rocks not easily dated radiometrically Radiometric ages added to geologic time scale by: 1. Cross-cutting relationships

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Relative-Age Dating

Relative-Age Dating. What is Relative-Age Dating?. A method of establishing the order of past geologic events shown in rocks and fossils. Does not allow scientists to determine exact ages of rocks or fossils.

294 views • 11 slides

J Bret Bennington geojbb@hofstra

Biostratigraphic and Lithostratigraphic Correlation of Sedimentary Strata in the Atlantic Coastal Plain. J Bret Bennington geojbb@hofstra.edu. Learning Objectives. Correlation (lithostrat. and chronostrat.) Utility of fossils for dating strata Fossils as chronostratigraphic markers

110 views • 10 slides