Physical Sciences and Mathematics Commons^™

The Sedimentary Petrology And Sedimentology Of The Unnamed Middle Eocene Sandstones Of Scow Bay, Indian And Marrowstone Islands, Northwest Washington, Leslie A. Melim

WWU Graduate School Collection

The unnamed Middle Eocene sandstones of Scow Bay are well exposed on the beaches of Indian and Marrowstone Island, northwest Washington. The rocks strike approximately east-west and dip to the north except on the east coast of Marrowstone Island where the structure is more complex. Each of the four coastal sections was described in detail, and the most complete was also measured.

The sandstone beds are typically thin- to very-thick-bedded, structureless lithic arenite. Locally abundant sedimentary structures include dish structures, vague horizontal lamination, load casts, flame structures, soft sediment deformation, and shale clasts. Interbedded with the sandstones are minor siltstones …