Uploaded December 2017 | Updated September 2026, 4 days ago
This video uses the same materials as the antiformal stack model without high basal friction to show how weak rocks, like shale, can be "badly" behaved during thrust belt development. When "sandwiched" between strong, brittle horizons, shale intervals attract fault development and experience internal deformation separate from layers above and below. As a result, dip data and structural style from a shale horizon may be very misleading if you try to use them to produce a deep cross section! Data from stronger, thickness-holding intervals is necessary to develop geometric constraints from surface data.
This video uses the same materials as the antiformal stack model without high basal friction to show how weak rocks, like shale, can be "badly" behaved during thrust belt development. When "sandwiched" between strong, brittle horizons, shale intervals attract fault development and experience internal deformation separate from layers above and below. As a result, dip data and structural style from a shale horizon may be very misleading if you try to use them to produce a deep cross section! Data from stronger, thickness-holding intervals is necessary to develop geometric constraints from surface data.
