Sedimentology and sequence stratigraphy of the Cretaceous Nanushuk, Seabee, and Tuluvak Formations exposed on Umiat Mountain

Original publisher: [Reston, Va.] : U.S. Geological Survey, [2005] OCLC Number: (OCoLC)244445092 Subject: Sedimentology. Excerpt: ... Sedimentology and Sequence Stratigraphy of the Cretaceous Nanushuk, Seabee, and Tuluvak Formations 15 A���������������������������������������������������������������������B�������������������������������������������������������������������������������������������������������Figure 23. Segment of west-east seismic line west of Cenomanian-Turonian paleoshelf margin ( see fig. 2 for location ), illustrat-ing stratal geometry of the Nanushuk, Seabee, and Tuluvak Formations ( pl. 1 ). A, Noninterpreted image. B, Interpreted image, with colors keyed to labeled formations. Within the Seabee Formation, darker blue strata are lower organic-rich shale ( Shale Wall facies ), yellow strata are inferred sandstone-prone lowstand-systems tract, and lighter blue strata are clinoform seismic facies consisting of organic-rich shale in lower and distal parts and coarsening-upward prodelta facies in upper and proximal parts. In the Seabee Formation, red lines are inferred higher-order-sequence boundaries, and yellow dotted lines are inferred flooding surfaces. In the Torok-Nanushuk sequence, blue lines are growth faults, and red line is sequence boundary.