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Lisiecki, Lorraine E; Herbert, Timothy D (2007): Automated composite depth scale reconstruction of ODP Leg 138 and 154 sites [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.832852, Supplement to: Lisiecki, LE; Herbert, TD (2007): Automated composite depth scale construction and estimates of sediment core extension. Paleoceanography, 22(4), PA4213, https://doi.org/10.1029/2006PA001401

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Abstract:
A composite section, which reconstructs a continuous stratigraphic record from cores of multiple nearby holes, and its associated composite depth scale are important tools for analyzing sediment recovered from a drilling site. However, the standard technique for creating composite depth scales on drilling cruises does not correct for depth distortion within each core. Additionally, the splicing technique used to create composite sections often results in a 10–15% offset between composite depths and measured drill depths. We present a new automated compositing technique that better aligns stratigraphy across holes, corrects depth offsets, and could be performed aboard ship. By analyzing 618 cores from seven Ocean Drilling Program (ODP) sites, we estimate that ∼80% of the depth offset in traditional composite depth scales results from core extension during drilling and extraction. Average rates of extension are 12.4 ± 1.5% for calcareous and siliceous cores from ODP Leg 138 and 8.1 ± 1.1% for calcareous and clay-rich cores from ODP Leg 154. Also, average extension decreases as a function of depth in the sediment column, suggesting that elastic rebound is not the dominant extension mechanism.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 2.745737 * Median Longitude: -69.503769 * South-bound Latitude: -3.096700 * West-bound Longitude: -110.571800 * North-bound Latitude: 5.976300 * East-bound Longitude: -42.908100
Date/Time Start: 1991-05-21T00:00:00 * Date/Time End: 1994-03-21T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
14 datasets

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Datasets listed in this publication series

  1. Lisiecki, LE; Herbert, TD (2007): (Table S1) New composite splice for ODP Site 138-146. https://doi.org/10.1594/PANGAEA.832837
  2. Lisiecki, LE; Herbert, TD (2007): (Table S2) Mapping meters below seafloor to corrected composite depth for ODP Site 138-846. https://doi.org/10.1594/PANGAEA.832846
  3. Lisiecki, LE; Herbert, TD (2007): (Table S2) Mapping meters below seafloor to corrected composite depth for ODP Site 138-849. https://doi.org/10.1594/PANGAEA.832847
  4. Lisiecki, LE; Herbert, TD (2007): (Table S1) New composite splice for ODP Site 138-849. https://doi.org/10.1594/PANGAEA.832838
  5. Lisiecki, LE; Herbert, TD (2007): (Table S2) Mapping meters below seafloor to corrected composite depth for ODP Site 138-851. https://doi.org/10.1594/PANGAEA.832848
  6. Lisiecki, LE; Herbert, TD (2007): (Table S1) New composite splice for ODP Site 138-851. https://doi.org/10.1594/PANGAEA.832839
  7. Lisiecki, LE; Herbert, TD (2007): (Table S2) Mapping meters below seafloor to corrected composite depth for ODP Site 154-925. https://doi.org/10.1594/PANGAEA.832849
  8. Lisiecki, LE; Herbert, TD (2007): (Table S1) New composite splice for ODP Site 154-925. https://doi.org/10.1594/PANGAEA.832840
  9. Lisiecki, LE; Herbert, TD (2007): (Table S2) Mapping meters below seafloor to corrected composite depth for ODP Site 154-926. https://doi.org/10.1594/PANGAEA.832850
  10. Lisiecki, LE; Herbert, TD (2007): (Table S1) New composite splice for ODP Site 154-926. https://doi.org/10.1594/PANGAEA.832841
  11. Lisiecki, LE; Herbert, TD (2007): (Table S2) Mapping meters below seafloor to corrected composite depth for ODP Site 154-927. https://doi.org/10.1594/PANGAEA.832851
  12. Lisiecki, LE; Herbert, TD (2007): (Table S1) New composite splice for ODP Site 154-927. https://doi.org/10.1594/PANGAEA.832842
  13. Lisiecki, LE; Herbert, TD (2007): (Table S2) Mapping meters below seafloor to corrected composite depth for ODP Site 154-929. https://doi.org/10.1594/PANGAEA.832844
  14. Lisiecki, LE; Herbert, TD (2007): (Table S1) New composite splice for ODP Site 154-929. https://doi.org/10.1594/PANGAEA.832843