work. It is our intention to continue this program into be included in the symposium volume, which is now the region of 40° to 50°S. Contribution no. 180 of the in press. Geosciences Division, University of Texas at Dallas. Much work remains to be done, and the final report will not he finished until about August 1972. At pre- References sent, full time is being devoted to the project by the Daiziel, I. W. D. 1970. Structural studies in the Scotia principal investigator and two graduate research as- Arc: the Patagonian and Fuegian Andes. Antarctic sistants, Carl Cathey and Jerry Oldham. Journal of the U.S., V(4) : 99-100. All Cenozoic volcanics have been turned over to Dr. Halpern, M. 1962. Potassium-argon dating of plutonic Wesley LeMasurier, University of Colorado at Den- bodies in Palmer Peninsula and southern Chile. Science, ver, for study. He participated in the field program in 138(3546): 1261-1262. Halpern, M. 1968. Ages of antarctic and Argentine rocks 1967-1968 and has concentrated his studies on that bearing on continental drift. Earth and Planetary Sciences aspect of the project and the Cretaceous volcanics. Letters, 5(3): 159-167. During June of this year a suite of rooms and a lab- Halpern, M. 1970. Hero Cruise 69-6. Antarctic Journal oratory in the new Texas Tech University Museum of the U.S., V(2) :44. were made available for our use. Following the move Halpern, M. 1971. Evidence for Gondwanaland from a review of West Antarctic radiometric ages. In: Research in to the new facilities, work was resumed on June 25. the Antarctic. American Association for the Advancement Rock specimens, thin sections, maps, records, and still of Science. p. 717-730. and moving pictures are being properly cataloged and Halpern, M. In press. Rubidium-strontium total rock and stored. Through the generosity of Mrs. Paul A. Siple mineral ages from the Marguerite Bay area, Kohler we acquired the Siple collection of antarctic rock Range, and Fosdick Mountains. In: Antarctic Geology and Geophysics. Oslo, Universitetsforlaget. specimens, most of which were from Marie Byrd Instituto de Investigaciones Geológicas. 1968. Mapa Land. Mr. Gerry Pagano devoted much time and ef- Geologico de Chile (escala 1: 1,000,000). Santiago, Chile. fort to packing and shipping these specimens to us. Levi, B., S. Mehech, and F. Munizaga. 1963. Edades They will be thin-sectioned, cataloged, and properly radiométricas y petrografia de granitos Chilenos. Instituto de Investigaciones Geolcigicas. Boletin, 12. 42 p. stored. Another acquisition was a small collection of Rex, D. C. In press. Potassium-argon age determinations on specimens collected by Herman Friis at the Japanese volcanic and associated rocks from the Antarctic Peninsula base area, Lützow-Holm Bay. He also donated many and Dronning Maud Land. In: Antarctic Geology and 2- by 2-in, transparencies of that sector to our collec- Geophysics. Oslo, Universitetsforlaget. tion. It will take many months to finish analyzing and cataloging the many hundreds of specimens, but it is our intent to make them available for study by any in- Marie Byrd Land and Ellsworth Land terested person. geologic survey

F. ALTON WADE Department of Geosciences Geology of the volcanic rocks Texas Tech University of the Ross Island area, Antarctica

During the past year, work has been progressing on SAMUEL B. TREVES the preparation of the report that will summarize the geology of coastal West Antarctica from Cape Department of Geology Colbeck, Edward VII Peninsula, on the west to the University of Nebraska eastern margin of the Hudson Mountains in Ellsworth and Land on the east. During three consecutive austral Institute of Polar Studies summers, 1966-1967, 1967-1968, and 1968-1969, The Ohio State University data and specimens were recorded and collected re- Field work in the 1970-1971 season primarily con- spectively in the field for subsequent study and analy- cerned the geology of the summits of Mounts Erebus, sis. These data, combined with those acquired by this Terror, Terra Nova, Bird (all on Ross Island) and principal investigator during the Byrd Antarctic Expe- Discovery (on the Scott Coast). Petrographic evalua- dition II, 1933-1935, and the U.S. Antarctic Service tion of thin sections of rocks and consideration of data Expedition, 1939-1941, in Marie Byrd Land will all collected at these locations show that the rocks and be used in the preparation of the report. Several pre- geology of the summit areas of the Ross Island area liminary reports have been published, and a general are very similar to the rocks and geology of the lower summary coauthored by Dr. John Wilbanks was pre- flanks and coastal areas of the Ross Island area vol- sented by the principal investigator at the SCAR Sym- canoes. The results of the study of the summit areas posium on Antarctic Geology and Solid Earth Geo- confirm the earlier established geologic history and se- piysics, Oslo, Norway, in August 1970. The paper will quence of eruptive events that was previously estab-

September—October 1971 193