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Corfield, Richard M; Cartlidge, Julie E (1993): Middle Miocene stable carbon and oxygen isotope record of ODP Holes 130-805B and 130-806B [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.780106, Supplement to: Corfield, RM; Cartlidge, JE (1993): Oxygen and carbon isotope stratigraphy of the Middle Miocene, Holes 805B and 806B. In: Berger, WH; Kroenke, LW; Mayer, LA; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 130, 307-322, https://doi.org/10.2973/odp.proc.sr.130.026.1993

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Abstract:
Bulk carbon isotope records are an effective chemostratigraphic tool for the middle Miocene because of the large and systematic variation in first-order d13C signals. Bulk d13C measurements support the presence of a hiatus at 305 mbsf in Hole 805B (latest middle Miocene), provisionally located while on board ship using biostratigraphic and magnetostratigraphic events. Records at Holes 805B and 806B show the middle Miocene Monterey carbon isotope excursion although the record at Hole 806B is apparently more stratigraphically continuous. Detailed analysis of multispecies foraminiferal carbon isotope records during the middle Miocene ("Monterey excursion") segment at Hole 806B support the assertion that this carbon isotope excursion comprises mainly between-reservoir effects. The benthic d18O data increase after 15.3 Ma, which we suggest corresponds to the mid-Miocene cooling step/ice volume increase of other authors. Planktonic foraminiferal d18O evidence exists for steepening of the thermocline at 17.4 Ma. A second-order d13C excursion superimposed at 13.8 Ma on the first-order Monterey excursion is associated with a second-order negative d18O excursion.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 0.773250 * Median Longitude: 159.944500 * South-bound Latitude: 0.318500 * West-bound Longitude: 159.361000 * North-bound Latitude: 1.228000 * East-bound Longitude: 160.528000
Date/Time Start: 1990-02-11T21:15:00 * Date/Time End: 1990-05-13T19:00:00
Event(s):
130-805B * Latitude: 1.228000 * Longitude: 160.528000 * Date/Time Start: 1990-02-11T21:15:00 * Date/Time End: 1990-05-13T19:00:00 * Elevation: -3186.8 m * Penetration: 473.3 m * Recovery: 444.89 m * Location: North Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 50 cores; 473.3 m cored; 0 m drilled; 94 % recovery
130-806B * Latitude: 0.318500 * Longitude: 159.361000 * Date/Time Start: 1990-02-18T21:00:00 * Date/Time End: 1990-02-23T01:30:00 * Elevation: -2519.9 m * Penetration: 743.1 m * Recovery: 666.36 m * Location: North Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 743.1 m cored; 0 m drilled; 89.7 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Corfield, RM; Cartlidge, JE (1993): (Appendix A) Stable carbon and oxygen isotope ratios of bulk rock samples of ODP Hole 130-805B. https://doi.org/10.1594/PANGAEA.780102
  2. Corfield, RM; Cartlidge, JE (1993): (Appendix B) Stable carbon and oxygen isotope ratios of bulk rock samples and foraminifera of ODP Hole 130-806B. https://doi.org/10.1594/PANGAEA.780105