Changes

* Sequence boundary formation and lowstand systems tract; fan deposition

* Sequence boundary formation and lowstand systems tract; fan deposition

 

** Rate of eustatic fall exceeds rate of subsidence.

<list-item>Rate of eustatic fall exceeds rate of subsidence.</list-item><list-item>Sea level falls to shelf break, shelf is exposed, incised; canyon cut.</list-item><list-item>Slope-perched deltas and submarine fans are deposited.</list-item>

** Sea level falls to shelf break, shelf is exposed, incised; canyon cut.

** Slope-perched deltas and submarine fans are deposited.

* Lowstand systems tract; wedge deposition

* Lowstand systems tract; wedge deposition

 

** Rate of eustatic fall decreases, reaches a stillstand, and rises slowly.

<list-item>Rate of eustatic fall decreases, reaches a stillstand, and rises slowly.</list-item><list-item>Submarine fan deposition ceases.</list-item><list-item>Incised valleys fill with coarse-grained, low-sinuosity channel or estuarine sandstones in response to sea level rise.</list-item><list-item>Shale-prone wedge with thin, fine-grained turbidites forms on the slope, then downlaps the top of the submarine fan.</list-item>

** Submarine fan deposition ceases.

** Incised valleys fill with coarse-grained, low-sinuosity channel or estuarine sandstones in response to sea level rise.

** Shale-prone wedge with thin, fine-grained turbidites forms on the slope, then downlaps the top of the submarine fan.

* Transgressive systems tract deposition

* Transgressive systems tract deposition

 

** Rate of rise is at a maximum.

<list-item>Rate of rise is at a maximum.</list-item><list-item>During brief slowdowns in the rate of rise, parasequences (fourth-order sequences) prograde; but overall they stack in a backstepping pattern.</list-item><list-item>Organic-rich (condensed) section moves up onto the shelf.</list-item><list-item>Fluvial systems typically shift from braided to meandering pattern.</list-item>

** During brief slowdowns in the rate of rise, parasequences (fourth-order sequences) prograde; but overall they stack in a backstepping pattern.

** Organic-rich (condensed) section moves up onto the shelf.

** Fluvial systems typically shift from braided to meandering pattern.

* Highstand systems tract deposition

* Highstand systems tract deposition

 

** Rate of sea level rise is at a minimum; in the late highstand, it falls slowly.

<list-item>Rate of sea level rise is at a minimum; in the late highstand, it falls slowly.</list-item><list-item>Depositional rates exceed rate of sea level rise, causing parasequences to build bas-inward in aggradational to progradational parasequence sets.</list-item><list-item>Parasequences downlap onto the condensed section.</list-item>

** Depositional rates exceed rate of sea level rise, causing parasequences to build basinward in aggradational to progradational parasequence sets.

** Parasequences downlap onto the condensed section.

==Third-order sequence example==

==Third-order sequence example==