Locally, however, faulted, contorted into tight symmetrical folds, or overridden by pre-Cenozoic baserocks along southwesterly dipping thrust faults.
2.
Locally, however, strata of the same age have been affected by a late pulse of tectonism, during which they were faulted, contorted into tight symmetrical folds, or overridden by pre-Tertiary basement rocks along southwesterly dipping thrust faults.