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Rock Coring Koolau Volcano

 

Description

Koolau Drill RigMantle plumes produce basalts which provide fundamental information on the composition and history of the mantle. The Hawai'ian plume is the classic example of a mantle plume and its basalts are unquestionably the best studied suite from any plume.
The subaerially exposed lavas of Koolau Volcano belong to the Enriched Mantle1 endmember of ocean island basalts and they define a geochemical endmember among Hawai'ian shield lavas in major and trace elements and in isotopes. Koolau lavas are important to an understanding of the origin and evolution of the Hawai'ian plume and the mantle. In particular, Koolau lavas appear to provide the strongest evidence for deep mantle recycling of crust (sediments and basalt), although this interpretation remain controversial and is based on sampling only the uppermost veneer of the volcano. It is important to establish the longevity of the distinctive Koolau geochemical signature by sampling deeper and older lavas from the volcano. If there were basaltic and sedimentary components in the Hawai'ian plume, were they restricted to the final stages of Koolau volcano´s growth? Scientific drilling will allow us to answer this question by obtaining lavas from subsurface of this enigmatic volcano.

(Photo ©:ICDP)


 

Location

Pacific, U.S.A., United States of America, Hawai'i, Oahu, Honolulu, Koolau

 

Coordinates

21° 20' 39.36'' N, 157° 52' 22.36'' W (Please scroll down to end of page for more information.)

 

Project Start and End
  • Begin of drilling April 19, 2000
  • End of drilling May 25, 2000

 

Programs and Funding

 

Principal Investigators
  • Michael O. Garcia, University of Hawai'i at Honolulu, Department of Geology and Geophysics

 

Cooperating Principal Investigators

No Co-PIs found for this project

 

Partners and Contractors

 

Keywords

Coring, Drilling, Hf Isotopes, High Resolution, HSDP, ICDP-1999/13, Icp-ms, KOOLAU, Mantle Plume, Periodicity, Recycling, Source Character, Thermal Regimes, Trace Elements, U.S.A., Volcanic Systems, Volcanics

 

Current State

Completed

 

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