Tectonic Unit: JBL Name: Bowser Lake Description: upper, nonmarine crossbedded conglomerate, sandstone, siltstone, shale, marly limestone prograded over lower basinal flysch comprising marine shale, siltstone, sandstone and near-shore sandstone, conglomerate, plant fossils and coquinas and coal. Sediments shed from uplifts to north, east and south; marine and nonmarine Formation: Coast Belt muJ Bowser L. Intermontane Belt muJ Bowser L. mJ Ashman Age Range: Middle and Upper Jurassic Maximum Age: 178.0 Ma Minimum Age: 145.6 Ma