U.S. Geological Survey Photographic Library

Yosemite National Park

Photos 1 to 25 of 893.
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1. cfc00305.gif Yosemite National Park, California. Porphyritic Half Dome Granite south of Tenaya Lake. 1913. ID. Calkins, F.C. 305
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2. cfc00306.gif Yosemite National Park, California. Porphyritic Cathedral Granite southeast of Tenaya Lake. 1913. ID. Calkins, F.C. 306
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3. cfc00308.gif Yosemite National Park, California. Dike of Cathedral Granite in porphyritic Half Dome Granite near Sunrise Mountain. 1913. ID. Calkins, F.C. 308
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4. cfc00310.gif Yosemite National Park, California. Cathedral Peak Granite polished by ancient glaciers, west of Tuolumne Meadows. On this ice-smoothed surface of Cathedral Peak Granite, the phenocrysts of feldspar appear in cross section and resemble pieces of sugar. The largest are about 2 inches in length. 1913. Plate 52-B, U.S. Geological Survey Professional paper 160. ID. Calkins, F.C. 310
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5. cfc00311.gif Yosemite National Park, California. Cathedral Peak Granite at the base of Vogelsang Peak. 1913. ID. Calkins, F.C. 311
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6. cfc00312.gif Yosemite National Park, California. Dike in Cathedral Granite on the Tuolumne River near Tuolumne Falls. 1913. ID. Calkins, F.C. 312
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7. cfc00314.gif Yosemite National Park, California. Dike of granodiorite in granite on the east slope of Illilouette Ridge. 1913. ID. Calkins, F.C. 314
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8. cfc00315.gif Yosemite National Park, California. Granodiorite with flow structure on Illilouette Ridge. 1913. ID. Calkins, F.C. 315
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9. cfc00321.gif Yosemite National Park, California. "North America" map on cliff east of El Capitan. The darker rocks are intrusive in the granite forming most of the cliff. 1913. ID. Calkins, F.C. 321
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10. cfc00322.gif Yosemite National Park, California. South across Fletcher Lake, showing light- colored dikes in old volcanic(?) rocks. 1913. ID. Calkins, F.C. 322
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11. cfc00323.gif Yosemite National Park, California. West across Fletcher Lake. Parsons Peak in the center. 1913. ID. Calkins, F.C. 323
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12. cfc00325.gif Yosemite National Park, California. Columnar structure in a basalt flow on the Tuolumne River. 1913. ID. Calkins, F.C. 325
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13. cfc00326.gif Yosemite National Park, California. Columnar structure, showing glacial striae. Detail of the bottom center of photo cfc00325. 1913. ID. Calkins, F.C. 326
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14. cfc00328.gif Yosemite National Park, California. West portal of the Yosemite Falls recess, showing fractures. 1913. ID. Calkins, F.C. 328
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15. cfc00329.gif Yosemite National Park, California. Bottom of Yosemite Falls, showing parallel curved fractures. 1913. ID. Calkins, F.C. 329
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16. cfc00331.gif Yosemite National Park, California. Natural bridge northeast of Indian Rock, formed by splitting of a slab due to exfoliation or jointing. 1913. ID. Calkins, F.C. 331
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17. cfc00332.gif Yosemite National Park, California. Jointed El Capitan Granite northeast of Sentinel Dome. 1913. ID. Calkins, F.C. 332
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18. cfc00333.gif Yosemite National Park, California. Jointed granite on the west side of the amphitheater north of Mount Clark. Fractures possibly due to exfoliation. 1913. ID. Calkins, F.C. 333
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19. cfc00335.gif Yosemite National Park, California. Three Brothers. This group is remarkable for its strongly asymmetric forms which are due to the splitting of the rock along oblique master joints. 1913. Plate 19-B, U.S. Geological Survey Professional paper 160. ID. Calkins, F.C. 335
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20. cfc00336.gif Yosemite National Park, California. Fractures in granite at the base of El Capitan, viewed from the southwest. 1913. ID. Calkins, F.C. 336
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21. cfc00337.gif Yosemite National Park, California. Liberty Cap, viewed from the southwest, showing a master joint. 1913. ID. Calkins, F.C. 337
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22. cfc00338.gif Yosemite National Park, California. Base of Liberty Cap, viewed from near Nevada Fall, showing joints and conchoidal fractures. 1913. ID. Calkins, F.C. 338
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23. cfc00339.gif Yosemite National Park, California. Mountains west of Fairview Dome, viewed from Tioga Road, showing joints in low dip. 1913. ID. Calkins, F.C. 339
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24. cfc00340.gif Yosemite National Park, California. Joints in granodiorite on the Tuolumne River above Glen Aulin. Dip is upstream. 1913. ID. Calkins, F.C. 340
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25. cfc00341.gif Yosemite National Park, California. Fissure in a cirque between Red Peak and Gray Peak. Possibly the locus of Quaternary faulting. 1913. ID. Calkins, F.C. 341
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