Link to USGS home page
USGS Home
Contact USGS
Search USGS
Coastal & Marine Geology InfoBank

USGS CMG InfoBank: Loihi

Skip navigational links
Search InfoBank
Home tab FACS tab Activities tab Atlas tab Geology School tab More tab More tab Geology School tabs
   
Dictionaries: The USGS and Science Education   USGS Fact Sheets   Topics   Keywords   Data Dictionary   Metadata Dictionary   Computer Terminology   Digital Formats
InfoBank Terms: Activity ID   activity overview   crew   formal metadata   lines   metadata   NGDC   port stops   project/theme   region   ship   stations   time   virtual globe   year  
Data Types: bathymetry   geodetic positioning   gravity   ground penetrating radar   imagery   LIDAR   magnetics   metering equipment   navigation   samples   seismic   definitions disclaimer  
Data Formats: ARC coverage   E00   FGDC metadata   gridded/image   imaging   material   scattered/swath   Shapefile   vector/polygon  
   
Comment: 24:37 - 25:29 (00:52)

Source: Annenberg/CPB Resources - Earth Revealed - 6. Plate Dynamics

Keywords: theory, Hawaii, "hot spot", "Pacific Plate", "mantle plume", island, volcano, "sea floor"

Our transcription: If the theory of Hawaii's formation is correct, Hawaii will drift off the hot spot in a few million years as they Pacific plate carries it away in a northwesterly direction.

The mantle plume will stay where it is and eventually create a new island over itself. Indeed, a young submarine volcano dubbed "Loihi" has been discovered forming southwest of Hawaii.

It rises some 8,000 feet from the sea floor but has another 3,000 feet to go before it breaks the surface and becomes a real island.

Loihi should build up to the surface some time between 19,000 and 100,000 years from now.

The enduring mystery is why a mantle plume, such as the one underlying Hawaii should remain in the same place for over 75 million years.

Geology School Keywords

Skip footer navigational links


InfoBank   Menlo Park & Santa Cruz Centers   St. Petersburg Center   Woods Hole Center   Coastal and Marine Geology Program   Geologic Information   Ask-A-Geologist   USGS Disclaimer  

FirstGov button   Take Pride in America button