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  • 1
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: A new Lower Cretceous lithostratigraphic unit of the Western Barents Shelf, named the Klippfisk Formation, is formally introduced. The formation represents a condensed carbonate succession deposited on platform areas and structural highs, where it consists of limestones and marls, often glauconitic. The limestones may have a nodular appearance, and fossil debris, which are dominated by Inoceramus prisms, may be abundant. The Klippfisk Formation is composed of two members: the Kutling Member defined herein from cores drilled on the Bjarmeland Platform, and the coeval Tordenskjoldberget Member described on Kong Karls Land. The base of the formation is defined by the abrupt decrease in gamma-ray intensity, where the dark shales of the underlying Hekkingen or Agardhfjellet formations are replaced by marls. It is often unconformable. The Klippfisk Formation is of Berriasian to Early Barremian age and appears to be time-transgressive over parts of the Western Barents Shelf (including Kong Karls Land). It passes laterally into the basinal Knurr Formation. On Kongsøya (Kong Karls Land) a thin shale unit, bounded by unconformities, earlier included in the Tordenskjoldberget Member, represents the northernmost extension of the overlying Kolje Formation in the Barents Shelf.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2024-01-09
    Keywords: 162-986C; 162-986D; Age model; Chronozone; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Event label; Joides Resolution; Leg162; North Greenland Sea; Ocean Drilling Program; ODP
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
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  • 3
    Publication Date: 2024-01-09
    Keywords: 162-987A; 162-987B; 162-987D; 162-987E; Age model; Chronozone; Comment; Depth, composite; Depth, reference; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Event label; Iceland Sea; Joides Resolution; Leg162; Ocean Drilling Program; ODP
    Type: Dataset
    Format: text/tab-separated-values, 186 data points
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  • 4
    Publication Date: 2024-01-09
    Keywords: 162-986D; Age, dated; Age, dated material; Age, derived using regression formula of Hodell et al. (1991); DEPTH, sediment/rock; DRILL; Drilling/drill rig; Joides Resolution; Leg162; North Greenland Sea; Ocean Drilling Program; ODP; Strontium-87/Strontium-86 ratio
    Type: Dataset
    Format: text/tab-separated-values, 30 data points
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  • 5
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    PANGAEA
    In:  Supplement to: Channell, James E T; Smelror, Morten; Jansen, Eystein; Higgins, Sean M; Lehman, Benoît; Eidvin, Tor; Solheim, Anders (1999): Age models for glacial fan deposits off East Greenland and Svalbard (Sites 986 and 987). 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.162.008.1999
    Publication Date: 2024-01-09
    Description: Cores recovered at Sites 986 and 987 comprise glacial fan sedimentation associated with the Svalbard-Barents Sea and Greenland Ice Sheets, respectively. At Site 986, the top 150 m and the basal 250 m yielded interpretable magnetic stratigraphies. The record from the intervening 550 m is compromised by drilling-related core deformation, poor recovery, and numerous debris flows. The uppermost 150 m appears to record the Brunhes/Matuyama boundary and the Jaramillo Subchron. The base of the drilled section (at ~950 meters below seafloor [mbsf]) is interpreted to lie within the Matuyama Chron (age 〈2.58 Ma) with an apparent normal polarity interval in the ~730-750 mbsf interval. Dinoflagellate cyst biostratigraphy and Sr isotopic ratios are consistent with a Matuyama age for the base of the drilled section and with the normal polarity interval as the Olduvai Subchron. On the other hand, the last occurrence of Neogloboquadrina atlantica (sinistral) and the last common occurrence of the warm-dwelling Globigerina bulloides at 647-650 mbsf in Hole 986D indicate an age for this level of ~2.3 Ma, inconsistent with the designation of the Olduvai Subchron in the ~730-750 mbsf interval. If the age at 647-650 mbsf in Hole 986D is taken as 2.3 Ma and the base of the hole lies within the Matuyama Chron, then the sedimentation rate in the basal 300 m of the cored section averages 1 m/k.y. At Site 987, the magnetic stratigraphy is fairly unambiguous throughout the section and yields an age of 7.5 Ma (Chron 4n) for the base of the drilled section. The paucity of calcareous and siliceous microfossils precludes biostratigraphic corroboration of the magnetostratigraphic interpretation, although dinoflagellate cysts provide general support, particularly at the base of the section. The age model indicates relatively low sedimentation rates (~5 cm/k.y.) at the base of the section with rates at least four to five times greater during intervals of debris flows at ~5-4.6 and ~2.6 Ma.
    Keywords: Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 3 datasets
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