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Schmieder, Frank; von Dobeneck, Tilo; Bleil, Ulrich (2000): Megnetic susceptibility of a subtropical South Atlantic transect. PANGAEA, https://doi.org/10.1594/PANGAEA.735066, Supplement to: Schmieder, F et al. (2000): The Mid-Pleistocene climate transition as documented in the deep South Atlantic Ocean: initiation, interim state and terminal event. Earth and Planetary Science Letters, 179(3-4), 539-549, https://doi.org/10.1016/S0012-821X(00)00143-6

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Abstract:
The Mid-Pleistocene transition (MPT) of the global climate system, initiated by a shift towards much larger northern hemisphere ice shields at around 920 ka and ending with predominance of 100 kyr ice age cyclicity since about 640 ka, is one of the fundamental enigmas in Quaternary climate evolution. Climate proxy records not exclusively linked to global ice volume are necessary to advance understanding of the MPT. Here we present a high-resolution Pleistocene magnetic susceptibility time series of 12 sediment cores from the subtropical South Atlantic essentially reflecting dissolution driven variations in carbonate accumulation controlled by changes in deep water circulation. In addition to characteristics known from delta18O records, the data sets reveal three remarkable features intimately related to the MPT: (1) an all-Pleistocene minimum of carbonate accumulation in the South Atlantic at 920 ka, (2) a MPT interim state of reduced carbonate deposition, indicating that the MPT period may have been a discrete state of the Pleistocene deep water circulation and climate system and (3) a terminal MPT event at around 540-530 ka documented in several peculiarities such as thick laminated layers of the giant diatom Ethmodiscus rex.
Related to:
Schmieder, Frank (1999): Magnetic cyclostratigraphy of South Altantic sediments. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 135, 82 pp, urn:nbn:de:gbv:46-ep000102535
von Dobeneck, Tilo; Schmieder, Frank (1999): Using rock magnetic proxy records for orbital and extended time series analyses into the super- and sub-Milankovitch bands. In: Fischer, G & Wefer, G (eds.), Use of Proxies in Paleoceanography - Examples from the South Atlantic, Springer, Berlin, Heidelberg, 601-633
Project(s):
South Atlantic in Late Quaternary: Reconstruction of Budget and Currents (SFB261)
Coverage:
Median Latitude: -29.060000 * Median Longitude: -16.224028 * South-bound Latitude: -34.183333 * West-bound Longitude: -38.801667 * North-bound Latitude: -21.586667 * East-bound Longitude: 7.533333
Date/Time Start: 1988-03-04T00:00:00 * Date/Time End: 1996-03-05T00:00:00
Event(s):
GeoB1034-3 * Latitude: -21.735000 * Longitude: 5.421667 * Date/Time: 1988-03-04T00:00:00 * Elevation: -3772.0 m * Penetration: 12 m * Location: Angola Basin * Campaign: M6/6 * Basis: Meteor (1986) * Device: Gravity corer (Kiel type) (SL) * Comment: cc: Foram.-schlamm, weiß
GeoB1035-4 * Latitude: -21.586667 * Longitude: 5.028333 * Date/Time: 1988-03-04T00:00:00 * Elevation: -4453.0 m * Penetration: 12 m * Location: Angola Basin * Campaign: M6/6 * Basis: Meteor (1986) * Device: Gravity corer (Kiel type) (SL) * Comment: cc: Foram.-sand, bindig
GeoB1211-3 * Latitude: -24.475000 * Longitude: 7.533333 * Date/Time: 1990-03-20T00:00:00 * Elevation: -4084.0 m * Recovery: 8.61 m * Location: Cape Basin * Campaign: M12/1 * Basis: Meteor (1986) * Device: Gravity corer (Kiel type) (SL) * Comment: CC,
Size:
13 datasets

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Datasets listed in this publication series

  1. Schmieder, F; von Dobeneck, T; Bleil, U (2000): SUSAS Stack. https://doi.org/10.1594/PANGAEA.57811
  2. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB1034-3. https://doi.org/10.1594/PANGAEA.119001
  3. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB1035-4. https://doi.org/10.1594/PANGAEA.119002
  4. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB1211-3. https://doi.org/10.1594/PANGAEA.119003
  5. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB1309-2. https://doi.org/10.1594/PANGAEA.119004
  6. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB1311-1. https://doi.org/10.1594/PANGAEA.119005
  7. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB1729-3. https://doi.org/10.1594/PANGAEA.119006
  8. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB2820-2. https://doi.org/10.1594/PANGAEA.119007
  9. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB2821-1. https://doi.org/10.1594/PANGAEA.119008
  10. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB3801-6. https://doi.org/10.1594/PANGAEA.119009
  11. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB3812-1. https://doi.org/10.1594/PANGAEA.119010
  12. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB3813-3. https://doi.org/10.1594/PANGAEA.119011
  13. Schmieder, F; von Dobeneck, T; Bleil, U (2000): Susceptibility (kappa_v) of sediment core GeoB3814-6. https://doi.org/10.1594/PANGAEA.119012