United States Geological Survey Yearbook |
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Page 18
Through marine geologic surveys, the dynamic aspects of plate tectonics can be
studied: the continual creation of the Earth's new crust at the mid- ocean
spreading centers; the formation of volcanic arcs, basins, and trenches where the
crustal ...
Through marine geologic surveys, the dynamic aspects of plate tectonics can be
studied: the continual creation of the Earth's new crust at the mid- ocean
spreading centers; the formation of volcanic arcs, basins, and trenches where the
crustal ...
Page 19
Geological Survey (U.S.). the marine realm remains the natural laboratory where
the fundamental tectonic and volcanic processes responsible for their formation
and resource potential may be studied best.
Geological Survey (U.S.). the marine realm remains the natural laboratory where
the fundamental tectonic and volcanic processes responsible for their formation
and resource potential may be studied best.
Page 20
For the first time, geologists can witness a massive- sulf ide type of deposit
actually being formed on the sea floor. Research into this process provides
important insights into exploration techniques for new onshore deposits. In
addition to these ...
For the first time, geologists can witness a massive- sulf ide type of deposit
actually being formed on the sea floor. Research into this process provides
important insights into exploration techniques for new onshore deposits. In
addition to these ...
Page 48
All signs indicated that a major new fracture was forming beneath the surface on
the east flank of Kilauea and that magma from beneath the summit of Kilauea
was moving into this newly forming, but still hidden, crack. During the day of ...
All signs indicated that a major new fracture was forming beneath the surface on
the east flank of Kilauea and that magma from beneath the summit of Kilauea
was moving into this newly forming, but still hidden, crack. During the day of ...
Page 62
Puerto Rico, like the other islands of the Greater Antilles, Cuba, Hispaniola, and
Jamaica, originally formed along a belt of submarine volcanoes that later were
raised above the sea in the form of an island arc. The oldest rocks of the island
arc ...
Puerto Rico, like the other islands of the Greater Antilles, Cuba, Hispaniola, and
Jamaica, originally formed along a belt of submarine volcanoes that later were
raised above the sea in the form of an island arc. The oldest rocks of the island
arc ...
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activities additional Administration agencies Alaska analysis aquifer areas assessment Assistant Authority base Basin Board Bureau California cartographic caused Central Chief City City of w coal collected Commission completed Conservation contamination continued Control cooperation Coordination County cover Department deposits discharge distribution District w Division earthquake Eastern Energy Environmental estimated Federal Federal agencies feet flood Florida flow formed funds Geologist Government ground ground-water hazards high-altitude hydrologic International Island Lake land landslides major Management maps marine ment million mineral resources models National Center Natural needs occurred Office Operations organic Park percent petroleum photography Planning potential problems processes Public Puerto Rico record Regional result River rocks scale scientific Searles Lake Service sources South spring standard stations STOP studies surface technical tion Transportation U.S. Geological Survey United Valley Volcano waste Water Resources Western Wilderness zone
Bibliographic information
| Title | United States Geological Survey Yearbook |
| Author | Geological Survey (U.S.) |
| Publisher | The Survey, 1983 |
| Original from | University of Minnesota |
| Digitized | 15 Jun 2009 |
| Export Citation | BiBTeX EndNote RefMan |