Drilling Projects By
Climate & Ecosystems
Sustainable Georesources
Natural Hazards
World
Geological Time
North and Central America
- Map of North and Central America
- Anadarko Basin (Oklahoma, U.S.A.)
- Bighorn Basin (U.S.A.)
- Blue Hole (Belize)
- Cape Cod (U.S.A.)
- Chesapeake Bay (U.S.A.)
- Chicxulub (Mexico)
- Chicxulub 2 (Mexico)
- Colorado (U.S.A.)
- Colorado 2 (U.S.A.)
- Cornell University (U.S.A.)
- Death Valley (U.S.A.)
- Hawai'i (U.S.A.)
- Koolau (U.S.A.)
- Lake Chalco (Mexico)
- Lake Izabal (Guatemala)
- Lake Petén Itzá (Guatemala)
- Lead (U.S.A.)
- Long Valley (U.S.A.)
- Mallik (Canada)
- Newberry (U.S.A.)
- New Jersey (U.S.A.)
- Nicaragua
- Oklahoma (U.S.A.)
- San Andreas Fault (U.S.A.)
- Sevier Basin (U.S.A.)
- Snake River (U.S.A.)
- Sudbury (Canada)
- U.S. Atlantic Margin (USA)
- Western North America (USA)
Long Valley Exploratory Well
Deep Scientific Drilling in a Large, Restless Caldera
A scientific drilling effort has been proposed to deepen an existing 2-km deep hole to a target depth of between 3.5 and 4.0 km. The borehole is located near the center of the resurgent dome of Long Valley Caldera in east-central California. Deepening the well has been accomplished by continuous H-size coring (2.5" diameter core) to the target depth. Long Valley Caldera has shown sustained unrest since 1980 characterized by recurring earthquake swarms, inflation (dome-shaped uplift) of the resurgent dome, and increased levels of fumarolic activity accompanied by high concentrations of carbon dioxide (CO2) gas in the soils around Mammoth Mountain on the southwest margin of the caldera.
