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Knüttel, Stephen (1986): Calcareous nannofossil biostratigraphy of the central East Pacific Rise [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.802470, Supplement to: Knüttel, S (1986): Calcareous nannofossil biostratigraphy of the central East Pacific Rise, Deep Sea Drilling Project 92: Evidence for downslope transport of sediments. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 255-290, https://doi.org/10.2973/dsdp.proc.92.110.1986

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Published: 1986 (exact date unknown) • DOI registered: 2012-12-20

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Abstract:
During Leg 92 of the Deep Sea Drilling Project, sediments containing calcareous nannofossils of latest Oligocene to Holocene age were recovered from 14 holes at six sites (597 to 602) along the East Pacific Rise. The combined sections yield a virtually complete record for the region, with a compressed upper Miocene to Pleistocene interval. The nannofossil content of 14 U.S.N.S. Eltanin piston cores from the study area were also examined in order to supplement data generated during Leg 92.
Two taxonomically new combinations are presented: Sphenolithus umbellus and Pontosphaera segmenta. Assemblages of calcareous nannofossils juxtaposed in reversed stratigraphic order within the upper Miocene provide strong evidence for downslope transport of sediments along the East Pacific Rise during the Messinian. Narrow bands of dark metalliferous sediment of coccolith Zone CN8b alternate with normal light-colored, in situ, pelagic sequences of Zone CN9b. This may indicate more vigorous bottom current activity between 5.40 and 6.70 Ma.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -25.121506 * Median Longitude: -118.037500 * South-bound Latitude: -40.583000 * West-bound Longitude: -135.133000 * North-bound Latitude: -18.806300 * East-bound Longitude: -83.250000
Date/Time Start: 1965-01-01T00:00:00 * Date/Time End: 1983-03-25T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
8 datasets

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Datasets listed in this publication series

  1. Knüttel, S (1986): (Table 1) Distribution of calcareous nannofossils in DSDP Hole 92-597. https://doi.org/10.1594/PANGAEA.250276
  2. Knüttel, S (1986): (Table 2) Distribution of calcareous nannofossils in DSDP Site 92-597. https://doi.org/10.1594/PANGAEA.250277
  3. Knüttel, S (1986): (Table 3) Distribution of calcareous nannofossils in DSDP Hole 92-598. https://doi.org/10.1594/PANGAEA.250279
  4. Knüttel, S (1986): (Table 4) Distribution of calcareous nannofossils in DSDP Hole 92-599. https://doi.org/10.1594/PANGAEA.250280
  5. Knüttel, S (1986): (Table 5) Distribution of calcareous nannofossils in DSDP Holes 92-600C and 92-601. https://doi.org/10.1594/PANGAEA.250281
  6. Knüttel, S (1986): (Table 8) Distribution of calcareous nannofossils in sediment core ELT21.002-PC. https://doi.org/10.1594/PANGAEA.257711
  7. Knüttel, S (1986): (Table 9) Distribution of calcareous nannofossils in sediment core ELT24.016-PC. https://doi.org/10.1594/PANGAEA.250282
  8. Knüttel, S (1986): (Table 7) Calcareous nannofossil zones, abundances, and preservation from U.S.N.S. Eltanin sediment cores. https://doi.org/10.1594/PANGAEA.802469