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Janecek, Thomas R (2000): (Table 1) Biogenic opal concentrations for a latitudinal transect of seven ODP Leg 167 sites along the California margin. PANGAEA,, Supplement to: Janecek, TR (2000): Data Report: Late Neogene biogenic opal data for Leg 167 sites on the California margin. In: Lyle, M; Koizumi, I; Richter, C; Moore, TC Jr (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 167, 1-2,

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Ocean Drilling Program Leg 167 drilled thirteen sites in a series of depth and latitudinal transects along the climatically sensitive California margin to reconstruct the Neogene history of deep-, intermediate-, and surface-ocean circulation changes (Lyle, Koizumi, Richter, et al., 1997, doi:10.2973/ Significant variations occurred in sediment properties on all time scales as seen in the high-resolution nondestructive shipboard measurements (e.g., bulk density and color reflectance), high- to intermediate-resolution downhole log measurements (e.g., resistivity and magnetic susceptibility), and lower resolution discrete shipboard measurements (e.g., physical properties and carbon geochemistry). Thus, these Leg 167 sites provide an opportunity to address paleoceanographic questions about the evolution of the California Current and links between the equatorial Pacific and the high-latitude North Pacific from millennial and orbital to tectonic time scales. This data report presents the results of biogenic opal analyses from a latitudinal transect of seven sites along the California margin for the time interval from 8 Ma to the present. Site selection for opal analyses was based upon such parameters as opal content, stratigraphic continuity, and lack of coring disturbance.
Median Latitude: 37.378114 * Median Longitude: -123.692714 * South-bound Latitude: 29.965100 * West-bound Longitude: -127.783000 * North-bound Latitude: 41.682900 * East-bound Longitude: -118.100000
Date/Time Start: 1992-06-18T17:00:00 * Date/Time End: 1996-06-17T22:00:00
Minimum DEPTH, sediment/rock: 0.30 m * Maximum DEPTH, sediment/rock: 446.62 m
167-1010C * Latitude: 29.965100 * Longitude: -118.100000 * Date/Time Start: 1996-05-02T17:15:00 * Date/Time End: 1996-05-03T21:45:00 * Elevation: -3466.0 m * Penetration: 213.9 m * Recovery: 192.94 m * Location: North Pacific Ocean * Campaign: Leg167 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 24 cores; 213.9 m cored; 0 m drilled; 90.2 % recovery
167-1014A * Latitude: 32.833200 * Longitude: -119.981000 * Date/Time Start: 1996-05-14T22:30:00 * Date/Time End: 1996-05-17T11:45:00 * Elevation: -1165.0 m * Penetration: 449 m * Recovery: 404.35 m * Location: North Pacific Ocean * Campaign: Leg167 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 50 cores; 449 m cored; 0 m drilled; 90.1 % recovery
167-1018A * Latitude: 36.988300 * Longitude: -123.277000 * Date/Time Start: 1996-05-29T01:15:00 * Date/Time End: 1996-06-01T07:30:00 * Elevation: -2477.0 m * Penetration: 426.2 m * Recovery: 426.85 m * Location: North Pacific Ocean * Campaign: Leg167 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 45 cores; 426.2 m cored; 0 m drilled; 100.2 % recovery
DEPTH, sediment is given in mbsf.
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Longitude of eventLongitude
3Latitude of eventLatitude
4Elevation of eventElevationm
5Sample code/labelSample labelJanecek, Thomas RODP sample designation
6DEPTH, sediment/rockDepthmGeocode
7Differential OffsetDiff OffsetmJanecek, Thomas R
8Depth, compositeDepth compmcdJanecek, Thomas Rshipboard
9AGEAgeka BPGeocode
10Opal, biogenic silicabSiO2%Janecek, Thomas ROpal, extraction; Mortlock & Froelich, 1989
4608 data points

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