ERSC 3P12 Lecture Notes - Lecture 19: Sea Level Rise, Aggradation, Sequence Stratigraphy

• School: Brock University
• Department: Earth Sciences
• Course: ERSC 3P12
• Professor: Martin Head

Document Summary

Smallest cycle recognised: a coherent series of beds separated by flooding surfaces, thickness less than 1m to a few 10s of m. mostly coarsen upwards as accommodation space fills, example from siliciclastic strand plain succession. Various examples: (a) siliciclastic strand plain succession. (b) deltaic succession with paralic coal. (c) intertidal to supratidal carbonate ramp succession (fining up sequence!) Each of the four systems tracts in sequence stratigraphy is comprised of several stacked parasequences. 2. (longer term trends in relative sea level change) Increase in rate of creation of accommodation space. S2>s1 retrogradation: no change in rate of creation of accommodation space. S2=s1 aggradation: decrease in rate of creation of accommodation space. S2