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Lyle, Mitchell W; Mix, Alan C; Ravelo, Ana Christina; Andreasen, Dyke; Heusser, Linda E; Olivarez, Annette (2000): Corg, CaCO3, bulk densities, accumulation rates and ages of ODP Leg 167 sites and three piston cores, California margin. PANGAEA, https://doi.org/10.1594/PANGAEA.794487, Supplement to: Lyle, MW et al. (2000): Millennial-scale CaCO3 and Corg events along the northern and central California margins: stratigraphy and origins. In: Lyle, M; Koizumi, I; Richter, C; Moore, TC Jr (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 167, 1-20, https://doi.org/10.2973/odp.proc.sr.167.214.2000

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Abstract:
Sediments from five Leg 167 drill sites and three piston cores were analyzed for Corg and CaCO3. Oxygen isotope stratigraphy on benthic foraminifers was used to assign age models to these sedimentary records. We find that the northern and central California margin is characterized by k.y.-scale events that can be found in both the CaCO3 and Corg time series. We show that the CaCO3 events are caused by changes in CaCO3 production by plankton, not by dissolution. We also show that these CaCO3 events occur in marine isotope Stages (MIS) 2, 3, and 4 during Dansgaard/Oeschger interstadials. They occur most strongly, however, on the MIS 5/4 glaciation and MIS 2/1 deglaciation. We believe that the link between the northeastern Pacific Ocean and North Atlantic is primarily transmitted by the atmosphere, not the ocean. Highest CaCO3 production and burial occurs when the surface ocean is somewhat cooler than the modern ocean, and the surface mixed layer is somewhat more stable.
Project(s):
Department of Geology, Oregon State University (OSU)
Coverage:
Median Latitude: 37.265685 * Median Longitude: -123.007037 * South-bound Latitude: 23.730000 * West-bound Longitude: -127.783000 * North-bound Latitude: 42.230000 * East-bound Longitude: -112.438000
Date/Time Start: 1974-11-06T00:00:00 * Date/Time End: 1996-06-17T00:00:00
Size:
8 datasets

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Datasets listed in this publication series

  1. Lyle, MW; Mix, AC; Ravelo, AC et al. (2000): (Table 10) Carbon composition, bulk densities, accumulation rates and ages of ODP Hole 167-1011C sediments. https://doi.org/10.1594/PANGAEA.794485
  2. Lyle, MW; Mix, AC; Ravelo, AC et al. (2000): (Table 11) d18O, carbon composition, bulk densities, accumulation rates and ages of core Y74-2-22. https://doi.org/10.1594/PANGAEA.794486
  3. Lyle, MW; Mix, AC; Ravelo, AC et al. (2000): (Table 4) Carbon composition, bulk densities, accumulation rates and ages of ODP Site 167-1020 sediments. https://doi.org/10.1594/PANGAEA.794479
  4. Lyle, MW; Mix, AC; Ravelo, AC et al. (2000): (Table 5) Organic carbon and calcium carbonate composition and ages of core W8709A-13. https://doi.org/10.1594/PANGAEA.794480
  5. Lyle, MW; Mix, AC; Ravelo, AC et al. (2000): (Table 6) d18O, carbon composition, bulk densities, accumulation rates and ages of core EW9504-17PC. https://doi.org/10.1594/PANGAEA.794481
  6. Lyle, MW; Mix, AC; Ravelo, AC et al. (2000): (Table 7) Carbon composition, bulk densities, accumulation rates and ages of ODP Site 167-1021 sediments. https://doi.org/10.1594/PANGAEA.794482
  7. Lyle, MW; Mix, AC; Ravelo, AC et al. (2000): (Table 8) Carbon composition, bulk densities, accumulation rates and ages of ODP Site 167-1018 sediments. https://doi.org/10.1594/PANGAEA.794483
  8. Lyle, MW; Mix, AC; Ravelo, AC et al. (2000): (Table 9) Carbon composition, bulk densities, accumulation rates and ages of ODP Site 167-1019 sediments. https://doi.org/10.1594/PANGAEA.794484