Stratigraphy

Question 1

Underlying principles of strati bounded with seismic

Answer 1

• Contrasts in acoustic impedance cause seismic reflections
• Sedimentary surfaces often constitute AI contrasts
• Unconformities comprise laterally variable AI contrasts
=> Ergo, seismic reflections often represent depositional surfaces and thus geological
time

Question 2

Definition depositional sequences

Answer 2

A depositional sequence is a stratigraphic unit consisting of a succession of reasonably conformable, related sediments, bounded by unconformities