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Holbourn, Ann; Kuhnt, Wolfgang; James, Noel P (2002): Benthic foraminifera and stable isotope record of ODP Leg 182 sites. PANGAEA, https://doi.org/10.1594/PANGAEA.735950, Supplement to: Holbourn, A et al. (2002): Late Pleistocene bryozoan reef mounds of the Great Australian Bight: isotope stratigraphy and benthic foraminiferal record. Paleoceanography, 17(3), 1042, https://doi.org/10.1029/2001PA000643

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Abstract:
Cores from Sites 1129, 1131, and 1132 (Ocean Drilling Program (ODP) Leg 182) on the uppermost slope at the edge of the continental shelf in the Great Australian Bight reveal the existence of upper Pleistocene bryozoan reef mounds, previously only detected on seismic lines. Benthic foraminiferal oxygen isotope data for the last 450,000 years indicate that bryozoan reef mounds predominantly accumulated during periods of lower sea level and colder climate since stage 8 at Sites 1129 and 1132 and since stage 4 at the deeper Site 1131. During glacials and interstadials (stages 2-8) the combination of lowered sea level, increased upwelling, and absence of the Leeuwin Current probably led to an enhanced carbon flux at the seafloor that favored prolific bryozoan growth and mound formation at Site 1132. At Site 1129, higher temperatures and downwelling appear to have inhibited the full development of bryozoan mounds during stages 2-4. During that time, favorable hydrographic conditions for the growth of bryozoan mounds shifted downslope from Site 1129 to Site 1131. Superimposed on these glacial-interglacial fluctuations is a distinct long-term paleoceanographic change. Prior to stage 8, benthic foraminiferal assemblages indicate low carbon flux to the seafloor, and bryozoan mounds, although present closer inshore, did not accumulate significantly at Sites 1129 and 1132, even during glacials. Our results show that the interplay of sea level change (eustatic and local, linked to platform progradation), glacial-interglacial carbon flux fluctuations (linked to local hydrographic variations), and possibly long-term climatic change strongly influenced the evolution of the Great Australian Bight carbonate margin during the late Pleistocene.
Project(s):
Coverage:
Median Latitude: -33.310710 * Median Longitude: 128.139334 * South-bound Latitude: -33.325900 * West-bound Longitude: 127.602200 * North-bound Latitude: -33.296560 * East-bound Longitude: 128.481300
Date/Time Start: 1998-11-20T03:35:00 * Date/Time End: 1998-11-26T18:30:00
Event(s):
182-1129C * Latitude: -33.296560 * Longitude: 128.481300 * Date/Time Start: 1998-11-24T23:24:00 * Date/Time End: 1998-11-26T18:30:00 * Elevation: -202.4 m * Penetration: 451.6 m * Recovery: 322.89 m * Location: Great Australian Bight * Campaign: Leg182 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 451.6 m cored; 0 m drilled; 71.5 % recovery
182-1131B * Latitude: -33.325900 * Longitude: 128.480880 * Date/Time Start: 1998-11-20T03:35:00 * Date/Time End: 1998-11-20T17:30:00 * Elevation: -331.4 m * Penetration: 105.8 m * Recovery: 95.34 m * Location: Great Australian Bight * Campaign: Leg182 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 12 cores; 105.8 m cored; 0 m drilled; 90.1 % recovery
182-1132B * Latitude: -33.316180 * Longitude: 127.602200 * Date/Time Start: 1998-11-21T01:15:00 * Date/Time End: 1998-11-22T04:25:00 * Elevation: -218.5 m * Penetration: 284.6 m * Recovery: 217.35 m * Location: Great Australian Bight * Campaign: Leg182 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 32 cores; 284.6 m cored; 0 m drilled; 76.4 % recovery
Size:
18 datasets

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Datasets listed in this publication series

  1. Holbourn, A; Kuhnt, W; James, NP (2002): Age model of ODP Hole 182-1129C. https://doi.org/10.1594/PANGAEA.95057
  2. Holbourn, A; Kuhnt, W; James, NP (2002): Age model of ODP Hole 182-1132B. https://doi.org/10.1594/PANGAEA.95058
  3. Holbourn, A; Kuhnt, W; James, NP (2002): Counting of benthic foraminifera of ODP Hole 182-1132B. https://doi.org/10.1594/PANGAEA.92875
  4. Holbourn, A; Kuhnt, W; James, NP (2002): Counting of planktic foraminifera of ODP Hole 182-1129C. https://doi.org/10.1594/PANGAEA.92870
  5. Holbourn, A; Kuhnt, W; James, NP (2002): Radiocarbon dating of ODP Hole 182-1132B. https://doi.org/10.1594/PANGAEA.95056
  6. Holbourn, A; Kuhnt, W; James, NP (2002): Radiocarbon datings on ODP Hole 182-1129C. https://doi.org/10.1594/PANGAEA.95055
  7. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Cibicidoides subhaidingerii alpha from ODP Hole 182-1131B. https://doi.org/10.1594/PANGAEA.94934
  8. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Cibicidoides subhaidingerii alpha from ODP Hole 182-1132B. https://doi.org/10.1594/PANGAEA.94938
  9. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Cibicidoides subhaidingerii beta from ODP Hole 182-1129C. https://doi.org/10.1594/PANGAEA.94931
  10. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Cibicidoides subhaidingerii beta from ODP Hole 182-1131B. https://doi.org/10.1594/PANGAEA.94935
  11. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Cibicidoides subhaidingerii beta from ODP Hole 182-1132B. https://doi.org/10.1594/PANGAEA.94939
  12. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Planulina wuellerstorfi beta from ODP Hole 182-1129C. https://doi.org/10.1594/PANGAEA.94932
  13. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Planulina wuellerstorfi from ODP Hole 182-1131B. https://doi.org/10.1594/PANGAEA.94936
  14. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Planulina wuellerstorfi from ODP Hole 182-1132B. https://doi.org/10.1594/PANGAEA.94940
  15. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Uvigerina peregrina from ODP Hole 182-1129C. https://doi.org/10.1594/PANGAEA.94933
  16. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Uvigerina peregrina from ODP Hole 182-1131B. https://doi.org/10.1594/PANGAEA.94937
  17. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes measured on Uvigerina peregrina from ODP Hole 182-1132B. https://doi.org/10.1594/PANGAEA.94941
  18. Holbourn, A; Kuhnt, W; James, NP (2002): Stable isotopes on Cibicidoides subhaidingerii alpha from ODP Hole 182-1129C. https://doi.org/10.1594/PANGAEA.94930