Deposition of upper Mesozoic resedimented conglomerates and associated turbidites in southwestern Oregon

The upper Mesozoic sedimentary rocks of southwestern Oregon include turbidites, dark shales, and great thicknesses of resedimented conglomerates. At two localities, these lithologies are arranged in thinning- and fining-upward sequences that begin abruptly with graded conglomerates (individual beds as much as 50 m thick) and pass upward into massive sandstones, classical turbidites, and dark mudstones. Detailed study of the fabric of the …