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Data Publisher for Earth & Environmental Science

Allouc, Jacques; Champetier, Y (1990): Geochemistry of sediments from the Tyrrhenian Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.745975, Supplement to: Allouc, J; Champetier, Y (1990): Mineralogy of firm muds and mudstones associated with volcano sedimentary layers from the Tyrrhenian Sea, Holes 650A and 651A, ODP Leg 107. In: Kastens, KA; Mascle, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 107, 307-321, https://doi.org/10.2973/odp.proc.sr.107.122.1990

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Abstract:
At Holes 650A and 651 A, set respectively in the Marsili Basin and the Vavilov Basin, Pleistocene sediments (turbiditic inputs interbedded with essentially hemipelagic sediments) may show layers of mudrocks with moderate to strong induration. Except in the two samples from Hole 651 A, it seems that zeolite crystallization does not play a role in the induration phenomenon. This latter appears to result from in situ clay authigenesis. Secondary K-Fe beidellite or Fe-Mg beidellite form diagenetic growths and bridges between sedimented particles. Turbidites are rich in volcaniclastics (glass, pumices and other volcanogenic elements) but the induration phenomenon appears to be associated essentially with the occurrence of basaltic detritus. It is proposed that clay authigenesis results from low temperature alteration of basaltic fragments issued from Vavilov and probably Marsili seamounts in sediments isolated from seawater by overlying deposits.
Project(s):
Coverage:
Median Latitude: 39.674220 * Median Longitude: 13.443080 * South-bound Latitude: 39.356700 * West-bound Longitude: 12.756500 * North-bound Latitude: 40.150500 * East-bound Longitude: 13.900800
Date/Time Start: 1986-01-02T22:38:00 * Date/Time End: 1986-01-17T23:00:00
Event(s):
107-650A * Latitude: 39.356700 * Longitude: 13.900800 * Date/Time Start: 1986-01-02T22:38:00 * Date/Time End: 1986-01-09T14:30:00 * Elevation: -3516.3 m * Penetration: 633.8 m * Recovery: 311.13 m * Location: Tirreno Sea * Campaign: Leg107 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 69 cores; 633.8 m cored; 0 m drilled; 49.1 % recovery
107-651A * Latitude: 40.150500 * Longitude: 12.756500 * Date/Time Start: 1986-01-11T05:22:00 * Date/Time End: 1986-01-17T23:00:00 * Elevation: -3578.0 m * Penetration: 550.9 m * Recovery: 185.66 m * Location: Tirreno Sea * Campaign: Leg107 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 58 cores; 550.9 m cored; 0 m drilled; 33.7 % recovery
Size:
5 datasets

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