+++ ICDP: Call for Proposals - Next Chance January 15, 2018 +++ Highlights and Updates Moved to the new ICDP Web Site +++

Rock Coring Koolau Volcano



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)



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



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



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





    Google Earth/Maps