Annual report of the United States Geological Survey to the Secretary of the Interior . parently to ahigher horizon than the sandstoneand shales of that place, is a soft, yellowish sandstone associated witha bed of coal 4 to G feet in thickness. Among the few fossils found thereare Callista angustifrons Conr., Mactra albaria and others whichDr. Dall refers doubtfully to the Miocene. These fossils are quiteunlike those (Eocene) associated with the coal on Pebble Creek,and indicate that the coal of the two localities does not belong to thesame bed. The divide between the Nehalem River and
Annual report of the United States Geological Survey to the Secretary of the Interior . parently to ahigher horizon than the sandstoneand shales of that place, is a soft, yellowish sandstone associated witha bed of coal 4 to G feet in thickness. Among the few fossils found thereare Callista angustifrons Conr., Mactra albaria and others whichDr. Dall refers doubtfully to the Miocene. These fossils are quiteunlike those (Eocene) associated with the coal on Pebble Creek,and indicate that the coal of the two localities does not belong to thesame bed. The divide between the Nehalem River and Dairy Creek, especiallythe southern slope, is composed of Miocene strata. The lower strataappearing to the westward are chiefly shales, while the upper ones arefor the most part sandstones. On Gales Creek, a mile above the post-office, over 100 feet of darkshales, dipping 40° to the southeast, are exposed in the lied of thestream, and a short distance farther down contain Mytilus, Macoma,Lyonsia, and Yoldia. The species are all new. but are regarded by as probably FlO. fi.—Section of left hank of Nehalem Rirer,near SIU). 1, Whitish, tuffaceousradiolarianshale; 2, Fossiliferous dark shale.
Size: 2007px × 1245px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, booksubjectgeology, booksubjectwatersupply
