(Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments ...

• Main Authors: Planke, Sverre, Cerney, Brian, Bücker, Christian J, Nilsen, Odd
• Format: Dataset
• Language: English
• Published: PANGAEA 1999
• Subjects: Sample code/label; Lithologic unit/sequence; DEPTH, sediment/rock; Depth, relative; Velocity, compressional wave; Velocity, shear wave; Density, wet bulk; Density, dry bulk; Porosity; Magnetic susceptibility; Hysteresis, saturation remanence, per unit volume; Factor; Minerals; Number; Clinopyroxene; Olivine; Clay minerals; Iron oxide; Silicon dioxide; Aluminium oxide; Iron oxide, Fe2O3; Manganese oxide; Magnesium oxide; Calcium oxide; Sodium oxide; Potassium oxide; Titanium dioxide; Phosphorus pentoxide; Loss on ignition; Elements, total; Drilling/drill rig; DSDP/ODP/IODP sample designation; Hamilton frame velocimeter, Boyce 1976; Calculated; Bartington MS2 magnetic susceptibility meter; Magnetometer; X-ray diffraction XRD; X-ray fluorescence XRF; Leg163; Joides Resolution; Ocean Drilling Program ODP; Greenland
• Online Access: https://dx.doi.org/10.1594/pangaea.804639; https://doi.pangaea.de/10.1594/PANGAEA.804639

Ocean Drilling Program Hole 990A penetrated 131 m of subaerially emplaced Paleocene flood basalts on the Southeast Greenland margin with a recovery of 74%. Shipboard P-wave velocity (Vp), density, and magnetic susceptibility were measured with 2- to 15-cm intervals on the core. Individual flow units were divided into four zones based on the observed petrophysical characteristics. From the top, these are Zone I (<7 m thick with a Vp of ~2.5 km/s), Zone II (3-5 m thick with a strongly increasing Vp from 2.5 to 5.5 km/s), Zone III (up to 20 m thick with a Vp of ~5.5-6.0 km/s), and Zone IV (<2 m thick with a strongly decreasing Vp from 6.0 to 2.5 km/s). Eighteen samples were selected from three of the fourteen penetrated basalt units for geochemical, petrological, and petrophysical studies focusing on the altered, low-velocity upper lava Zones I and II. Zone I is strongly altered to >50% clay minerals (smectite) and iron hydroxides, and the petrophysical properties are primarily determined by the clay ... : Supplement to: Planke, Sverre; Cerney, Brian; Bücker, Christian J; Nilsen, Odd (1999): Alteration effects on petrophysical properties of subaerial flood basalts: Site 990, Southeast Greenland margin. In: Larsen, HC; Duncan, RA; Allan, JF; Brooks, K (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 163, 1-12 ...