STRATIGRAPHIC SEQUENCES IN THE CAROLINA COASTAL PLAIN DELINEATED FROM WELL DATA Rick Diecchio George Mason University.

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Presentation transcript:

STRATIGRAPHIC SEQUENCES IN THE CAROLINA COASTAL PLAIN DELINEATED FROM WELL DATA Rick Diecchio George Mason University

OBJECTIVES Visualization in 4-dimensions Comparison of stratigraphy with respect to thickness and time Recognition of stratigraphic information on a geologic map

Plio-Pleistocene mya Miocene mya Oligocene mya Upper Eocene mya Lower Eocene mya Paleocene mya upper Upper Cretaceous mya middle Upper Cretaceous mya lower Upper Cretaceous mya Lower Cretaceous mya Jurassic

P-2 OT-13 OT-10 location of wells

Well data elevation of unit tops OT-10 Hatteras Well Plio-Pleistocene +9 Miocene -160 Oligocene Upper Eocene Lower Eocene Paleocene u U Cretaceous m U Cretaceous l U Cretaceous Lower Cretaceous Jurassic basement OT-13 Miocene +16 Upper Eocene -146 Paleocene -466 u U Cretaceous -494 m U Cretaceous -604 l U Cretaceous -964 Lower Cretaceous basement P-2 Miocene +95 l U Cretaceous +65 Lower Cretaceous +15 basement -55 All are time-rock units

P-2OT-13OT-10 Plot the wells and correlate unconformities comformable contacts Cross section Y-axis = elevation

Correlation diagram Vertical axis = time Must be consistent with cross-section

The visualization part Compare the differences with 2 different vertical axes

How this fits into Sloss’ sequences

The visualization thing: Recognition of sequences and unconformities on the geologic map