Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 89American Philosophical Society, 1945 |
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Сторінка 148
... noted above , using an improved Wentworth recording micrometer , found some variations in mineral percentages , and some changes in nomenclature are suggested . An aggregate dis- tance of 42,707 units was measured in traversing each ...
... noted above , using an improved Wentworth recording micrometer , found some variations in mineral percentages , and some changes in nomenclature are suggested . An aggregate dis- tance of 42,707 units was measured in traversing each ...
Сторінка 173
... noted and classified as low , medium , or high . This was done to detect any orientation of the grains in a particular di- rection . The equipment included a Fedoroff Uni- versal Stage for exact orientation measurements . Where both the ...
... noted and classified as low , medium , or high . This was done to detect any orientation of the grains in a particular di- rection . The equipment included a Fedoroff Uni- versal Stage for exact orientation measurements . Where both the ...
Сторінка 319
... noted , and were corrected for variations in atmospheric pressure by applying a pressure coefficient of -0.3 per cent per mm . Hg , which was calculated by the method of least squares from the data obtained during the stay in Melchior ...
... noted , and were corrected for variations in atmospheric pressure by applying a pressure coefficient of -0.3 per cent per mm . Hg , which was calculated by the method of least squares from the data obtained during the stay in Melchior ...
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