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Liao, Yuantao; Lyle, Mitchell W (2015): Sedimentation and sediment redistribution on the Cocos Ridge from two seismic acquisition cruises,NEMO-3 and MV1014 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.855631, Supplement to: Liao, Y; Lyle, MW (2014): Late Miocene to Pleistocene sedimentation and sediment transport on the Cocos Ridge, eastern tropical Pacific Ocean. Marine Geology, 355, 1-14, https://doi.org/10.1016/j.margeo.2014.05.007

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Abstract:
We use digital seismic reflection profiles within a 1° * 1° survey area on the Cocos Ridge (COCOS6N) to study the extent and timing of sedimentation and sediment redistribution on the Cocos Ridge. The survey was performed to understand how sediment focusing might affect paleoceanographic flux measurements in a region known for significant downslope transport. COCOS6N contains ODP Site 1241 to ground truth the seismic stratigraphy, and there is a seamount ridge along the base of the ridge that forms a basin (North Flank Basin) to trap sediments transported downslope. Using the Site 1241 seismic stratigraphy and densities extrapolated from wireline logging, we document mass accumulation rates (MARs) since 11.2 Ma. The average sediment thickness at COCOS6N is 196 m, ranging from outcropping basalt at the ridge crest to ~ 400 m at North Flank Basin depocenters. Despite significant sediment transport, the average sedimentation over the entire area is well correlated to sediment fluxes at Site 1241. A low mass accumulation rate (MAR) interval is associated with the 'Miocene carbonate crash' interval even though COCOS6N was at the equator at that time and relatively shallow. Highest MAR occurs within the late Miocene-early Pliocene biogenic bloom interval. Lowest average MAR is in the Pleistocene, as plate tectonic motions caused COCOS6N to leave the equatorial productivity zone. The Pliocene and Pleistocene also exhibit higher loss of sediment from the ridge crest and transport to North Flank Basin. Higher tidal energy on the ridge caused by tectonic movement toward the margin increased sediment focusing in the younger section.
Coverage:
Median Latitude: 5.873915 * Median Longitude: -86.159226 * South-bound Latitude: 4.819022 * West-bound Longitude: -86.717347 * North-bound Latitude: 6.573024 * East-bound Longitude: -85.472866
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
39 datasets

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Datasets listed in this publication series

  1. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line01a. https://doi.org/10.1594/PANGAEA.855618
  2. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line01a. https://doi.org/10.1594/PANGAEA.855604
  3. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line01a. https://doi.org/10.1594/PANGAEA.855572
  4. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line02. https://doi.org/10.1594/PANGAEA.855619
  5. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line02. https://doi.org/10.1594/PANGAEA.855606
  6. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line02. https://doi.org/10.1594/PANGAEA.855573
  7. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line03. https://doi.org/10.1594/PANGAEA.855620
  8. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line03. https://doi.org/10.1594/PANGAEA.855607
  9. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line03. https://doi.org/10.1594/PANGAEA.855574
  10. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line04. https://doi.org/10.1594/PANGAEA.855621
  11. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line04. https://doi.org/10.1594/PANGAEA.855608
  12. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line04. https://doi.org/10.1594/PANGAEA.855575
  13. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line05. https://doi.org/10.1594/PANGAEA.855622
  14. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line05. https://doi.org/10.1594/PANGAEA.855609
  15. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line05. https://doi.org/10.1594/PANGAEA.855576
  16. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line06. https://doi.org/10.1594/PANGAEA.855623
  17. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line06. https://doi.org/10.1594/PANGAEA.855610
  18. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line06. https://doi.org/10.1594/PANGAEA.855577
  19. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line07. https://doi.org/10.1594/PANGAEA.855624
  20. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line07. https://doi.org/10.1594/PANGAEA.855611
  21. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line07. https://doi.org/10.1594/PANGAEA.855578
  22. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line08. https://doi.org/10.1594/PANGAEA.855625
  23. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line08. https://doi.org/10.1594/PANGAEA.855612
  24. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line08. https://doi.org/10.1594/PANGAEA.855579
  25. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line09. https://doi.org/10.1594/PANGAEA.855626
  26. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line09. https://doi.org/10.1594/PANGAEA.855613
  27. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line09. https://doi.org/10.1594/PANGAEA.855580
  28. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_line10. https://doi.org/10.1594/PANGAEA.855627
  29. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_line10. https://doi.org/10.1594/PANGAEA.855614
  30. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_line10. https://doi.org/10.1594/PANGAEA.855581
  31. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during MV1014_transit01. https://doi.org/10.1594/PANGAEA.855628
  32. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from MV1014_transit01. https://doi.org/10.1594/PANGAEA.855615
  33. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during MV1014_transit01. https://doi.org/10.1594/PANGAEA.855582
  34. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during NEMO_line_COC2-01. https://doi.org/10.1594/PANGAEA.855629
  35. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from NEMO_line_COC2-01. https://doi.org/10.1594/PANGAEA.855616
  36. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during NEMO_line_COC2-1. https://doi.org/10.1594/PANGAEA.855583
  37. Liao, Y; Lyle, MW (2015): (Supplement T3) Mass accumulation rates on the Cocos Ridge during NEMO_line_COC2-2_3_COC3-4. https://doi.org/10.1594/PANGAEA.855630
  38. Liao, Y; Lyle, MW (2015): (Supplement T1) Sedimentation and sediment redistribution on the Cocos Ridge during NEMO_lineCOC2-2_3_COC3-4. https://doi.org/10.1594/PANGAEA.855584
  39. Liao, Y; Lyle, MW (2015): (Supplement T2) Calculated sediment thickness on the Cocos Ridge from NEMO_lineCOC2-2_3_COC3-4. https://doi.org/10.1594/PANGAEA.855617