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  • 16 km ENE Cape Roberts; Boundary description; Cape Roberts Project; Core wireline system; CRP; CRP-1; CWS; Deformation structure, type; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Description; Interpretation; Lithology/composition/facies; off Cape Roberts, Ross Sea, Antarctica; Sampling/drilling ice; Texture; Visual description  (1)
  • Analog impulse tool (D48); AND-2A; ANDRILL; Antarctic Geological Drilling; Antares digital loggin tool; Density, wet bulk; DEPTH, sediment/rock; DRILL; Drilling/drill rig; HNGS Standard total Gamma Ray; Magnetic susceptibility, volume; McMurdo Sound; McMurdo Station; Porosity; Potassium; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SMS; Southern McMurdo Sound; SPP1158; Thorium; Uranium  (1)
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  • 1
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    Unknown
    Characterisation of breccias in sediment core CRP-1 (Table 1) (1998)
    PANGAEA
    In:  Supplement to: Passchier, Sandra; Wilson, Terry; Paulsen, Timothy S (1998): Origin of breccias in the CRP-1 core. Terra Antartica, 5(3), 401-409, hdl:10013/epic.28315.d001
    Details
    Publication Date: 2024-04-29
    Description: CoreScan images were examined to determine the origin of breccias in the CRP-1 core. Breccias occur throughout the core. but are dominant deformation features in the upper 85 m. Breccia textures, boundaries and texture arrangements suggest that in situ fracturing and horizontal planar shearing are important deformation mechanisms in the upper part of the Miocene section. Forceful injections of silt and clay into fractures point to dewatering of overpressurised sediment. Breccias located below 55 metres below the sea floor (mbsf) occur associated with soft-sediment deformation, which is absent in younger intervals of the core. Deformation styles interpreted from the breccia textures, their downcore distribution, and the relations of breccias with sequence boundaries and lithologies, such as diamictites and graded beds, suggest brecciation occurred as a result of subglacial shearing and mass-movement processes. These mechanisms were also proposed for breccias and soft sediment deformation features observed in other McMurdo Sound cores. Subglacial shearing was a possible cause for the development of two thick brecciated intervals at ~44 and at ~79 mbsf, whereas slope failure and redeposition was probably the cause of brecciation below ~85 mbsf.
    Keywords: 16 km ENE Cape Roberts; Boundary description; Cape Roberts Project; Core wireline system; CRP; CRP-1; CWS; Deformation structure, type; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Description; Interpretation; Lithology/composition/facies; off Cape Roberts, Ross Sea, Antarctica; Sampling/drilling ice; Texture; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 81 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Downhole logging of the AND-2A borehole, Victoria Land Basin, McMurdo Sound, Antarctica (2009)
    PANGAEA
    In:  Supplement to: Wonik, Thomas; Grelle, Thomas; Handwerger, David A; Jarrard, Richard D; McKee, Andrew; Patterson, Taylor; Paulsen, Timothy S; Pierdominici, Simona; Schmitt, Douglas R; Schröder, Henning; Speece, Marvin; Wilson, Terry; SMS Science Team (2009): Downhole measurements in the AND-2A borehole, ANDRILL southern McMurdo Sound Project, Antarctica. Terra Antartica, 15(1), 41-48, hdl:10013/epic.43904.d001
    Details
    Publication Date: 2024-07-06
    Description: Under the framework of the ANDRILL Southern McMurdo Sound (SMS) Project successful downhole experiments were conducted in the 1138.54 metre (m)-deep AND-2A borehole. Wireline logs successfully recorded were: magnetic susceptibility, spectral gamma ray, sonic velocity, borehole televiewer, neutron porosity, density, calliper, geochemistry, temperature and dipmeter. A resistivity tool and its backup both failed to operate, thus resistivity data were not collected. Due to hole conditions, logs were collected in several passes from the total depth at ~1138 metres below sea floor (mbsf) to ~230 mbsf, except for some intervals that were either inaccessible due to bridging or were shielded by the drill string. Furthermore, a Vertical Seismic Profile (VSP) was created from ~1000 mbsf up to the sea floor. The first hydraulic fracturing stress measurements in Antarctica were conducted in the interval 1000-1138 mbsf. This extensive data set will allow the SMS Science Team to reach some of the ambitious objectives of the SMS Project. Valuable contributions can be expected for the following topics: cyclicity and climate change, heat flux and fluid flow, seismic stratigraphy in the Victoria Land Basin, and structure and state of the modern crustal stress field.
    Keywords: Analog impulse tool (D48); AND-2A; ANDRILL; Antarctic Geological Drilling; Antares digital loggin tool; Density, wet bulk; DEPTH, sediment/rock; DRILL; Drilling/drill rig; HNGS Standard total Gamma Ray; Magnetic susceptibility, volume; McMurdo Sound; McMurdo Station; Porosity; Potassium; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SMS; Southern McMurdo Sound; SPP1158; Thorium; Uranium
    Type: Dataset
    Format: text/tab-separated-values, 40775 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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