Physical properties of sediment core AND-2A
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| Autori principali: | , , , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2009
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| _version_ | 1867171772844998656 |
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| author | Dunbar, Gavin B Atkins, Cliff Magens, Diana Niessen, Frank SMS Science Team |
| author_facet | Dunbar, Gavin B Atkins, Cliff Magens, Diana Niessen, Frank SMS Science Team |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Whole-core measurements of Wet Bulk Density (WBD), compressional (P)-wave velocity (Vp), and Magnetic Susceptibility were measured at a sampling interval of 1 or 2 centimetres (cm) throughout the AND-2A drill core for initial core characterisation and on-site correlation with seismic modeling to predict target-reflector depth. Measurements were made using a GEOTEK (Multi-Sensor-Core-Logger MSCL). Density and velocity standards were measured together with core runs of 3-6 metres (m) (and occasionally up to 18 m) throughout the entire depth range to monitor data quality. Drift of the magnetic susceptibility sensor was also monitored and corrected where necessary. These physical properties show a large range of values, reflecting the different nature of the various lithologies including extremely high velocity and density values in individual clasts, and the effects of cementation on porosity. A downcore increase in WBD and Vp occurs in the upper 200 m, however, no systematic trend exists at greater depths although large fluctuations on a m-decimetre- (dm) scale occur. Magnetic susceptibility is generally low (<100 x 10-5 SI), however, four intervals of high (>600 x 10-5 SI) susceptibility occur at 560, 800, 980 and 1 080 mbsf, indicating a relatively greater contribution of volcanic-derived material to the core site in the lower half of the AND-2A core. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_744014 |
| institution | PANGAEA |
| language | en |
| publishDate | 2009 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Physical properties of sediment core AND-2A Dunbar, Gavin B Atkins, Cliff Magens, Diana Niessen, Frank SMS Science Team AND-2A; ANDRILL; Antarctic Geological Drilling; Density, wet bulk; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Magnetic susceptibility, volume; McMurdo Sound; McMurdo Station; Multi-Sensor Core Logger (MSCL), GEOTEK; Porosity, fractional; SMS__Campaign; Southern McMurdo Sound; Velocity, compressional wave Whole-core measurements of Wet Bulk Density (WBD), compressional (P)-wave velocity (Vp), and Magnetic Susceptibility were measured at a sampling interval of 1 or 2 centimetres (cm) throughout the AND-2A drill core for initial core characterisation and on-site correlation with seismic modeling to predict target-reflector depth. Measurements were made using a GEOTEK (Multi-Sensor-Core-Logger MSCL). Density and velocity standards were measured together with core runs of 3-6 metres (m) (and occasionally up to 18 m) throughout the entire depth range to monitor data quality. Drift of the magnetic susceptibility sensor was also monitored and corrected where necessary. These physical properties show a large range of values, reflecting the different nature of the various lithologies including extremely high velocity and density values in individual clasts, and the effects of cementation on porosity. A downcore increase in WBD and Vp occurs in the upper 200 m, however, no systematic trend exists at greater depths although large fluctuations on a m-decimetre- (dm) scale occur. Magnetic susceptibility is generally low (<100 x 10-5 SI), however, four intervals of high (>600 x 10-5 SI) susceptibility occur at 560, 800, 980 and 1 080 mbsf, indicating a relatively greater contribution of volcanic-derived material to the core site in the lower half of the AND-2A core. |
| title | Physical properties of sediment core AND-2A |
| topic | AND-2A; ANDRILL; Antarctic Geological Drilling; Density, wet bulk; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Magnetic susceptibility, volume; McMurdo Sound; McMurdo Station; Multi-Sensor Core Logger (MSCL), GEOTEK; Porosity, fractional; SMS__Campaign; Southern McMurdo Sound; Velocity, compressional wave |
| url | https://doi.org/10.1594/PANGAEA.744014 |