Geological Survey Professional Paper 644—F History of Snake River Canyon Indicated by Revised Stratigraphy of Snake River Group Near Hagerman and King Hill, Idaho

Cover

Abstract

Introduction

Acknowledgments

Age of the McKinney and Wendell Grade Basalts

Correlation of lava previously called Bancroft Springs Basalt

Equivalence of pillow lava near Bliss to McKinney Basalt

Late Pleistocene history of Snake River
   Predecessors of Sand Springs Basalt
   Wendell Grade Basalt
   McKinney Basalt
   Bonneville Flood

Conclusion

Paleomagnetism, by Allan Cox

References cited

FIGURE

1. Index map of Idaho showing area discussed

2. Chart showing stratigraphy of Snake River Group

3. Geologic map of area between Hagerman and King Hill

4-7. Photographs showing:

4. Pressure ridges of McKinney Basalt

5. Scabland surface of McKinney Basalt

6. Boulder of Melon Gravel on McKinney Basalt

7. Gravel under McKinney Basalt

8. Geologic map of area southeast of King Hill

9. Photograph of canyon-filling McKinney Basalt at Bancroft Springs

10. Geologic sections across former canyon of Snake River

11. Maps of area between Hagerman and King Hill showing late Pleistocene drainage changes

12. Photograph showing canyon fill of Sand Springs Basalt

13. Diagram showing directions of remanent magnetization of selected basalts from the Snake River Group

TABLE

1. Altitudes and gradients of surface of McKinney Basalt southeast of King Hill

2. Selected pebble counts of gravel pertaining to ancestral river history between Hagerman and King Hill

3. Log of water well 65-13E-6dc1 at Bliss

4. Log of water well 65-13E-5dd1, three-quarters of a mile east of Bliss

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UNITED STATES DEPARTMENT OF THE INTERIOR
ROGERS C. B. MORTON, Secretary

GEOLOGICAL SURVEY
W. A. Radlinski, Acting Director

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