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You, Chen-Feng; Morris, J D; Gieskes, Joris M; Rosenbauer, Robert J; Zheng, S H; Xu, X; Ku, Teh-Lung; Bischoff, James L (1994): (Table 1) Chemical compositions of beryllium in sediments and pore waters of ODP Hole 131-808. PANGAEA, https://doi.org/10.1594/PANGAEA.707989

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Abstract:
Studies of Be distributions in subduction zone sediments will help to understand questions regarding the enrichments of cosmogenic Be-10 in arc volcanic rocks. Analyses of Be-10 and Be-9 in sediments of Ocean Drilling Program Site 808, Nankai Trough and Be-9 in porewaters of Site 808 and Sites 671 and 672, Barbados ridge complex, show significant decreases in solid phase Be-10 and large increases of porewater Be-9 at the location of the décollement zone and below or at potential flow conduits. These data imply the potential mobilization of Be during pore fluid expulsion upon sediment burial. Experiments involving reaction between a décollement sediment and a synthetic NaCl-CaCl2 solution at elevated pressure and temperatures were conducted in an attempt to mimic early subduction zone processes. The results demonstrate that Be is mobilized under elevated pressure and temperature with a strong pH dependence. The Be mobilization provides an explanation of Be-10 enrichment in arc volcanic rocks and supports the argument of the importance of the fluid processes in subduction zones at convergent margins.
Related to:
You, Chen-Feng; Morris, J D; Gieskes, Joris M; Rosenbauer, Robert J; Zheng, S H; Xu, X; Ku, Teh-Lung; Bischoff, James L (1994): Mobilization of beryllium in the sedimentary column at convergent margins. Geochimica et Cosmochimica Acta, 58(22), 4887-4897, https://doi.org/10.1016/0016-7037(94)90219-4
Project(s):
Coverage:
Latitude: 32.352150 * Longitude: 134.944367
Date/Time Start: 1990-04-04T00:00:00 * Date/Time End: 1990-05-31T00:00:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: 1258 m
Event(s):
131-808 * Latitude: 32.352150 * Longitude: 134.944367 * Date/Time Start: 1990-04-04T00:00:00 * Date/Time End: 1990-05-31T00:00:00 * Elevation: -4685.1 m * Penetration: 4130.2 m * Recovery: 732.1 m * Location: Philippine Sea * Campaign: Leg131 * Basis: Joides Resolution * Device: Composite Core (COMPCORE) * Comment: 163 cores; 1463.3 m cored; 1980 m drilled; 50% recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5Sample code/labelSample labelYou, Chen-FengODP sample designation
6Age modelAge modelkaYou, Chen-Feng
7Beryllium 99Bepmol/lYou, Chen-FengEIectron capture detection gas chromatography (ECD-GC)
8Beryllium 99Beµg/gYou, Chen-FengEIectron capture detection gas chromatography (ECD-GC)
9Beryllium 1010Be109 atoms/gYou, Chen-FengAccelerator mass spectrometry (AMS)
10CoefficientCoeffYou, Chen-FengCalculatedKd = (exchangeable 9Be concentration in sediment per gram) / (9Be concentration in pore water per ml)
Size:
100 data points

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