2. Sequence stratigraphy of carbonate systems

Question 1

Please define parasequences, simple sequences, and first, second, and third-order sequences.

Answer 1

Parasequences are conformable successions of genetically related beds bounded by marine surfaces.

Simple sequences are parasequence-sized sequences that are bounded by sea-level fall.

First order sequence is the largest-scale sequence that is defined by large-scale events.

Second order is controlled by subsidence

Third order are smaller-scale sequences compared to first and second-order sequences. They are typically controlled by short-term eustatic sea-level fluctuations on a million-year timescale

Question 2

the Wilson model…

Answer 2

Was the first to describe parasequence/sequence phenomena

Question 3

What is the main control of the distribution of facies in para/seq?

Answer 3

depth

Beds will follow the shoreline

Question 4

Label this graph loosely

Answer 4

Question 5

How can we accumulate tens to hundreds of parasequences in a succession? Please illustrate.

Answer 5

Question 6

parasequences can…

Answer 6

Show us general trends

Question 7

Thickness of successive parasequences varies (thinning of thickening). what can these changes in the thickness of successive cycles tell us about changes in the rate of longer-term change in accommodation space? Which facies will mostly vary in thickness (accumulation) between parasequences? Complete.

Answer 7

Question 8

Type of sequence will depend on…

Answer 8

platform geometry, type of factory, and all involved climatic, oceanographic, and other biotic factors which control them.

Question 9

you find dissolution and cementation at the top during…

Answer 9

FSST, LST

Question 10

Shallow sequences at the end sequence (End HST, end progradation) are considered…

Answer 10

“generational hardgrounds” in which not just thickness can changes, but also composition

Question 11

The accumulation rate is…

b) shows..

Answer 11

Constant

progradating paltform