Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2) ...
Twenty four core samples from CRP-1, seven from Quaternary strata (20-43.55 meters below sea floor or mbsf) and seventeen from early Miocene strata (43.55 to 147.69 mbsf), have been analysed for their grain-size distribution using standard sieve and Sedigraph techniques. The results are in good agre...
| Main Authors: | , |
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| Format: | Dataset |
| Language: | English |
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PANGAEA
1998
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| Online Access: | https://dx.doi.org/10.1594/pangaea.53548 https://doi.pangaea.de/10.1594/PANGAEA.53548 |
| Summary: | Twenty four core samples from CRP-1, seven from Quaternary strata (20-43.55 meters below sea floor or mbsf) and seventeen from early Miocene strata (43.55 to 147.69 mbsf), have been analysed for their grain-size distribution using standard sieve and Sedigraph techniques. The results are in good agreement with estimates of texture made as part of the visual core description for the 1 :20 core logs for CRP-1 (Cape Roberts Science Team, 1998). Interpretation of the analyses presented here takes into account the likely setting of the site in Quaternary times as it is today, with CRP-1 high on the landward flank of a well-defined submarine ridge rising several hundred metres above basins on either side. In contrast, seismic geometries for strata deposited in early Miocene times indicate a generally planar sea floor dipping gently seaward. Fossils from these strata indicate shallow water depths (< 100 m), indicating the possibility that waves and tidal currents may have influenced sea floor sediments. The ... : Supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382 ... |
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