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Data report: digital core images as data: an example from IODP Expedition 3031

Roy H. Wilkens,2 Nancy Niklis,3 and Mark Frazer3


Digital core images offer the highest resolution realization of core properties available to scientific investigators. The digital core scanner used aboard the JOIDES Resolution during Integrated Ocean Drilling Program Expedition 303 captured ~10 pixels per millimeter of core. The ocean drilling community, however, has been slow to utilize these digital data as other than highly detailed pictures. In this study we illustrate a fast and simple method to extract core images as depth-scaled digital data. These data can then be manipulated through image enhancement to highlight detail not easily recognized in the original image or cores. Other data such as multisensor track core scans can be easily overlain on the images. We use digital core images to examine core distortion by developing sets of tables for five Expedition 303 sites that precisely map features in the site composite to those same features in individual cores from each hole at that site. In general, results show that in 80% of instances features within the composite section line up to within 35 cm of the same features in sections not used for the composite.

1 Wilkens, R.H., Niklis, N., and Frazer, M., 2009. Data report: digital core images as data: an example from IODP Expedition 303. In Channell, J.E.T., Kanamatsu, T., Sato, T., Stein, R., Alvarez Zarikian, C.A., Malone, M.J., and the Expedition 303/306 Scientists, Proc. IODP, 303/306: College Station, TX (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/​iodp.proc.303306.201.2009

2 Hawaii Institute of Geophysics and Planetology, Honolulu HI 96822, USA.

3 Department of Geology and Geophysics, University of Hawaii, Honolulu HI 96822, USA.

Initial receipt: 6 May 2008
Acceptance: 26 April 2009
Publication: 22 July 2009
MS 303306-201