Stratigraphic correlation of Upper Cretaceous to Paleocene forearc basin sediments in Northeast Japan: cyclic sedimentation and basin evolution

摘要: Abstract Cretaceous to Paleocene sediments are distributed across a 200 km-wide and 1400 km-long belt in Northeast Japan Sakhalin. Twenty-six stratigraphic sections including land-based offshore drill holes surface correlated delineate the sedimentary history basin evolution of Yezo forearc basin. Two second-order shallowing-upward cycles recognized Hokkaido but obscure north Honshu. Shallow-marine paralic first cycle (early Albian Turonian) represented by Mikasa Formation (late as western marginal facies, while eustatic curves (e.g. Haq curves) reach highstand maximum at late Cenomanian. The Campanian Maastrichtian shallow- non-marine facies second (Coniacian Maastrichtian) characterized Hakobuchi Group its correlatives This large-scale shallowing may have reflected directional changes Izanagi-Kula plate motion near early Campanian. uppermost Upper is possibly absent everywhere shallow-marine often show several third-order depositional sequences with upward-coarsening successions. They been controlled global eustasy even an active-margin setting, since stacking patterns timing sequence boundaries appear considerably concordant oscillation curves.