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Cadet, Jean-Paul; Thisse, Yves; Pouclet, André; Bardintzeff, Jacques Marie; Stephan, J F (1982): Geochemistry and minerals of glass shards at DSDP Leg 66 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.817768, Supplement to: Cadet, J-P et al. (1982): Tephra from Deep Sea Drilling Project Leg 66: Middle America Trench transect (southern Mexico). In: Watkins, JS; Casey Moore, J; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 66, 687-698, https://doi.org/10.2973/dsdp.proc.66.131.1982

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Abstract:
Deep Sea Drilling Project Leg 66 drilled eight sites along a transect across the Middle America Trench off Mexico, including continental (Sites 493 and 489), oceanic (Site 487), and trench (Site 486) reference sites and four sites (490, 492, 491, 488) in the trench inner wall. Because of their location - close to volcanic sources and subject to prevailing winds and marine currents (N to S, NW to SE) - analysis of airborne ashes intercalated within the sediments at these sites provides a reliable record of explosive volcanism in the area.
Intense onshore volcanic activity in Mexico during the Oligo-Miocene has been well documented by the andesites and ignimbrites of the Sierra Madre Occidental and Sierra Madre del Sur and in the Plio-Quaternary by the andesites and basalts from the Trans-Mexican Neovolcanic Belt and the eastern border of Baja California.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 16.204505 * Median Longitude: -99.009321 * South-bound Latitude: 15.853500 * West-bound Longitude: -99.175300 * North-bound Latitude: 16.381000 * East-bound Longitude: -98.925500
Date/Time Start: 1979-03-24T00:00:00 * Date/Time End: 1979-04-24T00:00:00
Event(s):
66-487 * Latitude: 15.853500 * Longitude: -99.175300 * Date/Time: 1979-03-24T00:00:00 * Elevation: -4764.0 m * Penetration: 190.5 m * Recovery: 119.6 m * Location: North Pacific/TRENCH * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 180.5 m cored; 9.5 m drilled; 66.3 % recovery
66-489A * Latitude: 16.269800 * Longitude: -99.018800 * Date/Time: 1979-04-03T00:00:00 * Elevation: -1240.0 m * Penetration: 327 m * Recovery: 154.9 m * Location: North Pacific/TRENCH * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 289 m cored; 0 m drilled; 53.6 % recovery
66-490 * Latitude: 16.159300 * Longitude: -99.056500 * Date/Time: 1979-04-08T00:00:00 * Elevation: -1761.0 m * Penetration: 588.5 m * Recovery: 343.4 m * Location: North Pacific/TRANSITION ZONE * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 63 cores; 577 m cored; 9 m drilled; 59.5 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Cadet, J-P; Thisse, Y; Pouclet, A et al. (1982): (Table 5) Geochemistry of amphiboles at DSDP Sample 66-489A-1-CC. https://doi.org/10.1594/PANGAEA.817767
  2. Cadet, J-P; Thisse, Y; Pouclet, A et al. (1982): (Table 4) Geochemistry of feldspars at DSDP Leg 66 Holes. https://doi.org/10.1594/PANGAEA.817766
  3. Cadet, J-P; Thisse, Y; Pouclet, A et al. (1982): (Table 3) Geochemistry and minerals of glass shards at DSDP Leg 66 Holes. https://doi.org/10.1594/PANGAEA.817765