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Creator:: Harris, Sara E., Mix, Alan C., and King, Terri
Abstract:: Calcium carbonate percentages at five Ceara Rise sites were estimated at 1- to 2-k.y. intervals over the past 5 m.y., using reflectance spectroscopy and magnetic susceptibility proxies. From these estimates and detailed correlations between sites, gradients of calcite and terrigenous sediment accumulation rates in a depth transect of sites reveal...
Resource Type:: Article
Full Text:: % C aC O 3 20 40 60 80 S ite 9 25 20 40 60 80 S ite 926 20 40 60 80 S ite 9 27 20

Creator:: Mix, Alan C., Harris, Sara E., and Janecek, Thomas R.
Abstract:: During Leg 138, we measured reflectance spectra in the visible and near-infrared bands (455-945 nm) every few centimeters on split core surfaces from eastern tropical Pacific Ocean sediments. Here, we evaluate predictions of the content of biogenic calcite, biogenic opal, and nonbiogenic sediments from the reflectance spectra. For Sites 844...
Resource Type:: Article
Full Text:: high spectral resolution (bandwidth, 0.96 nm) fast enough (about 10 s per sample) to keep up with ODP

Creator:: Hagelberg, T. K., Pisias, Nicklas G., Shackleton, N. J., Mix, Alan C., and Harris, Sara E.
Abstract:: Ocean Drilling Program (ODP) Leg 138 was designed to study the late Neogene paleoceanography of the equatorial Pacific Ocean at time scales of thousands to millions of years. Crucial to this objective was the acquisition of continuous, high-resolution sedimentary records. It is well known that between successive advanced piston corer...
Resource Type:: Article
Full Text:: . Hagelberg,2,3 N.G. Pisias,2 N.J. Shackleton,4 A.C. Mix,2 and S. Harris2 ABSTRACT Ocean Drilling Program

Creator:: Harris, Sara E.
Resource Type:: Dissertation
Full Text:: 'ITO I REFERENCE BEAM Lii PORT STEERER INTEGRATING ç-( ' SPECT SPHERE 7 (/ 4 CORE TRACK - __i. s

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