Channell, James E T; Amigo, Alejandro E; Fronval, Torben; Rack, Frank R; Lehman, Benoît (1999): Revised depth scale, splice tie points and chron boundaries of ODP Hole 151-907A and Site 162-907. PANGAEA, https://doi.org/10.1594/PANGAEA.805070, Supplement to: Channell, JET et al. (1999): Magnetic stratigraphy at Sites 907 and 985 in the Norwegian-Greenland Sea and a revision of the Site 907 composite section. In: Raymo, ME; Jansen, E; Blum, P; Herbert, TD (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 162, 1-18, https://doi.org/10.2973/odp.proc.sr.162.036.1999
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The magnetic polarity stratigraphy at Site 907 obtained from the shipboard pass-through magnetometer and from discrete samples is readily interpretable back to the onset of the Gilbert Chron (5.89 Ma). From this level to the base of the section at ~14 Ma, the interpretation is corroborated by silicoflagellate datums with predictable correlation to polarity chrons. The resulting magnetostratigraphic interpretation differs from those proposed in the Leg 151 (Hole 907A) and 162 (Holes 907B and 907C) Initial Reports volumes. An important hiatus in the 7-10 Ma interval at Site 907 caused sedimentation to slow or cease for ~2.7 m.y. We have revised the shipboard correlation among the three holes at Site 907, resulting in a new composite section splice and recalculation of composite depths.
For Site 985, magnetostratigraphic interpretation is possible down to ~150 meters below seafloor (mbsf) (C3An/C3Ar) at ~6 Ma. There are no useful biostratigraphic datums from Site 985 to support this interpretation; however, the interpretation is supported by the correlation of Sites 985 and 907 using natural gamma data from the shipboard multisensor track. Below ~150 mbsf at Site 985, drilling-related deformation at the onset of extended core barrel drilling precluded magnetostratigraphic interpretation.
Median Latitude: 69.244082 * Median Longitude: -12.698269 * South-bound Latitude: 69.233300 * West-bound Longitude: -12.698300 * North-bound Latitude: 69.249800 * East-bound Longitude: -12.698200
Date/Time Start: 1993-08-05T12:48:00 * Date/Time End: 1995-08-02T11:38:00
Datasets listed in this Collection
- Channell, JET; Amigo, AE; Fronval, T et al. (1999): (Appendix A) Revised depth scale for ODP Hole 151-907A and Site 162-907 sediments. https://doi.org/10.1594/PANGAEA.805067
- Channell, JET; Amigo, AE; Fronval, T et al. (1999): (Appendix B) Splice tie points for ODP Site 162-907 sediments. https://doi.org/10.1594/PANGAEA.805068
- Channell, JET; Amigo, AE; Fronval, T et al. (1999): (Table 2) Polarity chron boundaries at ODP Hole 151-907A and Site 162-907 sediments. https://doi.org/10.1594/PANGAEA.805069