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doi:10.2204/iodp.sp.307.2005

SITE SUMMARIES

Site: PORC-04A
Priority:
 		Primary
Position:
 		51°22.553'N, 11°43.802'W
Water depth (m):
 		954
Target drilling depth (mbsf):
 		112
Approved maximum penetration (mbsf):
 		112
Survey coverage:
  • P980521 (SP 2000) (Fig. F12)
  • P000660 (SP 0900) (Fig. F11)
  • P010515 (SP 0222) (Fig. F7)
  • P010528 (SP 3246)
  • Track map (Fig. F9)
  • Porcupine-Belgica 1998, 2000, and 2001 high-resolution seismic grid
  • TTR7-AT-ORAT8 3.5 kHz and side-scan sonar
  • TOBI 30 kHz mosaic side-scan sonar (Figs. F15, F16)
  • Polarstern ANT-XVII/4 swath bathymetry (Fig. F15)
  • ROV-Videotransect (Fig. F16)
  • Core MD01-2450 (September 2001)
    • Objectives:
         		Onlapping drift body, partly draping the lower part of the carbonate mound. It bears information on the amount of carbonate being shed off the mound production area. The drift body is in close relation to an active channel system. Below follows a series of sigmoidally shaped sedimentary bodies of internally alternating high- and low-amplitude layers.
    Drilling program:
         		Triple-APC to refusal
    Logging program:
         		Triple combo, FMS-sonic
    Nature of rock anticipated:
         		Silty clay and nannofossil- and microfossil-bearing ooze with intercalation of sandy and terrigeneous material, including mound-derived micrite and calcareous debris

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