Proceedings

andesite ARTHUR associated Basin beds Bulletin Calif California Cambrian Canada Chairman CHARLES Charles Palache Colorado Committee conodonts correlation Council Councilor County Creek Cretaceous D. C. Dec December deposits Devonian Died dolomite Eocene erosion fault fauna feet formation fossil Geol Geological Society project geologists GEORGE glacial gneiss granite intrusive JOHN Journal of Science Lake lava limestone lower metamorphism meteorite miles minerals Mines Miocene Mississippi Montana Museum N. Y. Dec Nevada North northern Ordovician origin Paleontology Paleozoic papers Pennsylvanian Penrose Medal Permian Pleistocene Pliocene present quartz Range Read by title region Report rhyolite River rocks Royal Royal Dublin Society sandstone schists scientific sediments session shale Silurian Society of America Sollas southern species stratigraphic structure surface Survey of Canada Tertiary Texas thick tion U. S. Geological Survey University Upper valley Vice-President volcanic volume Washington western WILLIAM Wyoming York zone