United States Geological Survey YearbookThe Survey, 1990 - Geology |
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Page 5
... fields near Watsonville . Surface cracks showing direction of movement Former ground surface --- SAN ANDREAS FAULT PACIFIC Direction of plate movement 11.5 mi t PLATE Fault rupture Uplift = 14 in 3.7 mi NORTH AMERICAN PLATE 7.5 ft total ...
... fields near Watsonville . Surface cracks showing direction of movement Former ground surface --- SAN ANDREAS FAULT PACIFIC Direction of plate movement 11.5 mi t PLATE Fault rupture Uplift = 14 in 3.7 mi NORTH AMERICAN PLATE 7.5 ft total ...
Page 8
... field office before the hurricane . During this time , Green operated the USGS field office out of the carport of his home . For his dauntless courage and unques- tioned leadership in an uncertain and potentially life - threatening ...
... field office before the hurricane . During this time , Green operated the USGS field office out of the carport of his home . For his dauntless courage and unques- tioned leadership in an uncertain and potentially life - threatening ...
Page 12
... fields were removed during Hurricane Hugo , the response of the beach to subsequent storms may be greatly modified ... field studies provided critical information on the status and effects of the eruption . In spite of the bad weather ...
... fields were removed during Hurricane Hugo , the response of the beach to subsequent storms may be greatly modified ... field studies provided critical information on the status and effects of the eruption . In spite of the bad weather ...
Page 14
... fields Redoubt volcano lavas Pre - 1989 crater 1989-90 vent area Seismic station Mid - December 1989. - Warnings of a potential eruption were issued by the AVO about 20 hours before the initial explosive event of December 14 , 1989. The ...
... fields Redoubt volcano lavas Pre - 1989 crater 1989-90 vent area Seismic station Mid - December 1989. - Warnings of a potential eruption were issued by the AVO about 20 hours before the initial explosive event of December 14 , 1989. The ...
Page 15
... field for the first time since December 1986. By April , lava had entered the Kalapana Gardens Sub- division . By the end of July , all of Kalapana was covered by lava , and flows were moving toward the well - known black sand beach of ...
... field for the first time since December 1986. By April , lava had entered the Kalapana Gardens Sub- division . By the end of July , all of Kalapana was covered by lava , and flows were moving toward the well - known black sand beach of ...
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activities Administration Alaska Arctic areas Assistant atrazine Award Baikal Bldg Board Bureau cartographic data Chief Hydrologist City City of w coal coastal Commission contamination cooperative Coordination County Denver Federal Center Department of Public Development disaster Division Chief drought earth science earthquake Environmental eruption Federal agencies field geologic map geologists geophysical ground water ground-water Hurricane Hugo hydrologic IDNDR Information Systems Interior investigations Island Lake Lake Baikal land lava located Loma Prieta earthquake Loudoun County Management Menlo Park ment miles mineral deposits mineral resources National Center National Mapping National Water NAWQA Office percent Planning production Puerto Rico Redoubt volcano Regional Reston River basin rock scale scientific scientists seismic Service spatial data storage storm studies surface tion Transportation U.S. Department U.S. Geological Survey U.S. Virgin Islands United users USGS Water Conservation District Water District water quality Water Resources Water-Quality Assessment