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Bachman, Steven B; Leggett, Jeremy K (1982): Petrology at DSDP Leg 66 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.817684, Supplement to: Bachman, SB; Leggett, JK (1982): Petrology of Middle America Trench and trench slope sands, Guerrero Margin, Mexico. In: Watkins, JS; Casey Moore, J; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 66, 429-436, https://doi.org/10.2973/dsdp.proc.66.111.1982

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Abstract:
The sandstone petrology of Leg 66 samples provides insights into changes through time in the geology of the source regions along the Guerrero portion of the Middle America continental margin. This in turn constrains possible models of the evolution of the Middle America Trench (e.g., de Czerna, 1971; Malfait and Dinkleman, 1972; Karig, 1974). Primarily medium-grained sands and sandstones, representing the widest variety available of trench/trench slope settings and ages, were analyzed in both light and heavy mineral studies. Standard techniques were used as much as possible in order to compare results from other margins and from ancient rocks.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 16.135364 * Median Longitude: -99.029051 * South-bound Latitude: 15.913800 * West-bound Longitude: -99.138000 * North-bound Latitude: 16.381000 * East-bound Longitude: -98.925500
Date/Time Start: 1979-03-22T00:00:00 * Date/Time End: 1979-04-24T00:00:00
Event(s):
66-486 * Latitude: 15.922800 * Longitude: -99.135000 * Date/Time: 1979-03-22T00:00:00 * Elevation: -5142.0 m * Penetration: 38 m * Recovery: 17.5 m * Location: North Pacific/TRENCH * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 43 m cored; 0 m drilled; 40.7 % recovery
66-486A * Latitude: 15.913800 * Longitude: -99.138000 * Date/Time: 1979-03-22T00:00:00 * Elevation: -5138.0 m * Penetration: 22 m * Recovery: 3.5 m * Location: North Pacific/TRENCH * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 22 m cored; 0 m drilled; 16 % recovery
66-488 * Latitude: 15.951700 * Longitude: -99.027700 * Date/Time: 1979-03-27T00:00:00 * Elevation: -4254.0 m * Penetration: 428.5 m * Recovery: 159.5 m * Location: North Pacific/CREST * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 44 cores; 408 m cored; 19 m drilled; 39.1 % 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. Bachman, SB; Leggett, JK (1982): (Table 1) Modal of detrital components at DSDP Leg 66 sands. https://doi.org/10.1594/PANGAEA.817679
  2. Bachman, SB; Leggett, JK (1982): (Table 2) Total grain-size fraction and heavy mineral separate weights at DSDP Leg 66 sands. https://doi.org/10.1594/PANGAEA.817681
  3. Bachman, SB; Leggett, JK (1982): (Table 3) Abundance of heavy mineral species and groups in DSDP Leg 66 sand/sandstone samples. https://doi.org/10.1594/PANGAEA.817683