Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 89American Philosophical Society, 1945 |
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... possible during photographic sur- veys , the plane was kept at a uniform elevation of 7,000 feet , and every effort was made to maintain a straight course . Ground speed generally ave- raged about 90 miles per hour . Photographs between ...
... possible during photographic sur- veys , the plane was kept at a uniform elevation of 7,000 feet , and every effort was made to maintain a straight course . Ground speed generally ave- raged about 90 miles per hour . Photographs between ...
Сторінка 130
... possible modes and environ- ments of deposition which may be considered . First , it is hardly possible for the sediments to have been deposited by wind , owing to angularity of the grains . Equally impossible is glacial dep- osition ...
... possible modes and environ- ments of deposition which may be considered . First , it is hardly possible for the sediments to have been deposited by wind , owing to angularity of the grains . Equally impossible is glacial dep- osition ...
Сторінка 434
... possible , and as rapidly as possible , entirely up to this level . Many nutritionists favor such a course of action . But surely they will make more progress if they first single out the groups in the population suffering severely from ...
... possible , and as rapidly as possible , entirely up to this level . Many nutritionists favor such a course of action . But surely they will make more progress if they first single out the groups in the population suffering severely from ...
Зміст
WEST BASE FLIGHT OPERATIONS | 35 |
Field Altitudes of West Base Parties United States Antarctic Service Expedition 1939 | 61 |
The Geology of the Rockefeller Mountains King Edward VII Land Antarctica | 67 |
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altitude Antarctic Service Antarctic Service photo Antarctica atmosphere average Bay of Whales biotite birds body Cache calories camp Cape cent clothing coast cold collected crevasses dikes East Base Edsel Ford Edsel Ford Ranges feet feldspar flight Ford Ranges forest Fosdick Range freezing Geol George VI Sound Glacier gneisses grains granite granodiorite heat loss hornblende igneous rocks increase intrusive Island Jour latitude Little America longitude Marie Byrd Land metamorphic meters miles minerals Mount Rea muscovite observations Official U. S. Antarctic orthoclase outcrops Palmer Peninsula party Peak pemmican perthite petrographical photographs pigeons plagioclase plane plasma calcium plateau plutonic rocks quartz ration region Rockefeller Mountains Ross Shelf Ice schist sedimentary sediments sericite Siple sledging snow southern specimens surface thermal timber tion trail trees U. S. Antarctic Service United States Antarctic Wade weather Weddell West Base wind velocity wood zone