Changes

==Depositional break==

==Depositional break==

In early publications the depositional break is referred to as the ''shelf break'', often uniquely imaged on seismic reflection profiles.<ref name=ch04r100>Vail, P., R., Todd, R., G., 1981, North Sea Jurassic unconformities, chronostratigraphy and seal-level changes from seismic stratigraphy: Proceedings, Petroleum Geology of the Continental Shelf, Northwest Europe, p. 216–235.</ref><ref name=ch04r102>Vail, P., R., Hardenbol, J., Todd, R., G., 1984, Jurassic unconformities, chronostratigraphy and sea-level changes from seismic stratigraphy and biostratigraphy in Schlee, J., S., ed., Interregional Unconformities and Hydrocarbon Accumulation: AAPG Memoir 36, p. 129–144.</ref> More recently, the depositional break was referred to as the ''shoreline break'', a position coincident with the seaward end of a stream-mouth bar in a delta or the upper shoreface in a beach environment.<ref name=ch04r70>Mitchum, R., M., Jr., Van Wagoner, J., C., 1990, High-frequency sequences and eustatic cycles in the Gulf of Mexico basin: Proceedings, Gulf Coast Section SEPM 11th Annual Research conference, p. 257–267.</ref> Shoreline breaks are well imaged on highresolution seismic profiles and in well-exposed outcrop belts but are usually below resolution scale of most industry seismic reflection profiles.

In early publications the depositional break is referred to as the ''shelf break'', often uniquely imaged on seismic reflection profiles.<ref name=ch04r100>Vail, P., R., Todd, R., G., 1981, North Sea Jurassic unconformities, chronostratigraphy and seal-level changes from seismic stratigraphy: Proceedings, Petroleum Geology of the Continental Shelf, Northwest Europe, p. 216–235.</ref><ref name=ch04r102>Vail, P., R., Hardenbol, J., Todd, R., G., 1984, [http://archives.datapages.com/data/specpubs/seismic1/data/a166/a166/0001/0100/0129.htm Jurassic unconformities, chronostratigraphy and sea-level changes from seismic stratigraphy and biostratigraphy] in Schlee, J., S., ed., Interregional Unconformities and Hydrocarbon Accumulation: AAPG Memoir 36, p. 129–144.</ref> More recently, the depositional break was referred to as the ''shoreline break'', a position coincident with the seaward end of a stream-mouth bar in a delta or the upper shoreface in a beach environment.<ref name=ch04r70>Mitchum, R., M., Jr., Van Wagoner, J., C., 1990, High-frequency sequences and eustatic cycles in the Gulf of Mexico basin: Proceedings, Gulf Coast Section SEPM 11th Annual Research conference, p. 257–267.</ref> Shoreline breaks are well imaged on highresolution seismic profiles and in well-exposed outcrop belts but are usually below resolution scale of most industry seismic reflection profiles.

==Nomenclature problems==

==Nomenclature problems==