for the EOT (Eocene-Oligocene Transition) researchers, you might be interested in this compilation/review study of the presence and nature of unconformities in association with this environmental transition (full disclosure: I was one of the reviewers) ⚒️🧪 www.sciencedirect.com/science/arti...

Global Eocene-Oligocene unconformity in clastic sedimentary basins

Global sedimentary hiatuses are well-documented in ancient pelagic sediment, and include Paleocene, Eocene-Oligocene boundary, and Miocene hiatuses. L…