Changes

Biostratigraphic correlation between sections separated by a fault zone or other major geologic feature is frequently much more reliable than seismic reflectors or well log picks. Correlation across growth faults, where stratal thickness and character can vary greatly from the high to the low side, is a notable example.

Biostratigraphic correlation between sections separated by a fault zone or other major geologic feature is frequently much more reliable than seismic reflectors or well log picks. Correlation across growth faults, where stratal thickness and character can vary greatly from the high to the low side, is a notable example.

==Stratigraphic distribution of onlap events==

==Stratigraphic distribution of onlap events==

The figure below illustrates the stratigraphic distribution of onlap events, tectonic episodes (“s”-shaped arrows), oceanic anoxic events (OAE), and “crises” of the shallow water biota (<span class="noglossary">BC</span>) in various parts of the world during part of the Mesozoic (after Simo et al.<ref name=ch17r80>Simo, J., A., T., Scott, R., W., Masse, J.-P., 1993, Cretaceous carbonate platforms: an overview, in Simo, J., A., T., Scott, R., W., Masse, J.-P., eds., Cretaceous Carbonate Platforms: AAPG Memoir 56, p. 1–14.</ref>) Landward is toward the right in each column.

[[:file:applied-paleontology_fig17-23.png|Figure 1]] illustrates the stratigraphic distribution of onlap events, tectonic episodes (“s”-shaped arrows), oceanic anoxic events (OAE), and “crises” of the shallow water biota (<span class="noglossary">BC</span>) in various parts of the world during part of the Mesozoic (after Simo et al.<ref name=ch17r80>Simo, J., A., T., Scott, R., W., Masse, J.-P., 1993, Cretaceous carbonate platforms: an overview, in Simo, J., A., T., Scott, R., W., Masse, J.-P., eds., Cretaceous Carbonate Platforms: AAPG Memoir 56, p. 1–14.</ref>) Landward is toward the right in each column.

 

==Numerical ages==

==Numerical ages==