Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2), supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382
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...
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Format: | Dataset |
Language: | English |
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PANGAEA - Data Publisher for Earth & Environmental Science
1998
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Online Access: | https://dx.doi.org/10.1594/pangaea.53548 https://doi.pangaea.de/10.1594/PANGAEA.53548 |
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ftdatacite:10.1594/pangaea.53548 |
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openpolar |
institution |
Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
DEPTH, sediment/rock Size fraction -1.0 to -0.5 phi Size fraction -0.5-0.0 phi Size fraction 0.0-0.5 phi Size fraction 0.5-1.0 phi Size fraction 1.0-1.5 phi Size fraction 1.5-2.0 phi Size fraction 2.0-2.5 phi Size fraction 2.5-3.0 phi Size fraction 3.0-3.5 phi Size fraction 3.5-4.0 phi Size fraction 4.0-4.5 phi Size fraction 4.5-5.0 phi Size fraction 5.0-5.5 phi Size fraction 5.5-6.0 phi Size fraction 6.0-6.5 phi Size fraction 6.5-7.0 phi Size fraction 7.0-7.5 phi Size fraction 7.5-8.0 phi Size fraction 8.0-8.5 phi Size fraction 8.5-9.0 phi Size fraction 9.0-9.5 phi Size fraction 9.5-10.0 phi Size fraction 10.0-10.5 phi Size fraction < 10.5 phi Percentile 01 Percentile 05 Percentile 16 Percentile 25 Percentile 50 Percentile 75 Percentile 84 Percentile 95 Grain size, mean Mean, standard deviation Skewness Size fraction > 2 mm, gravel Sand Silt Size fraction < 0.002 mm, clay Lithology/composition/facies Core wireline system Grain size, SEDIGRAPH 5000 Calculated Calculated after FOLK Grain size, sieving Grain size, sieving/settling tube CRP-1 Sampling/drilling ice Cape Roberts Project CRP |
spellingShingle |
DEPTH, sediment/rock Size fraction -1.0 to -0.5 phi Size fraction -0.5-0.0 phi Size fraction 0.0-0.5 phi Size fraction 0.5-1.0 phi Size fraction 1.0-1.5 phi Size fraction 1.5-2.0 phi Size fraction 2.0-2.5 phi Size fraction 2.5-3.0 phi Size fraction 3.0-3.5 phi Size fraction 3.5-4.0 phi Size fraction 4.0-4.5 phi Size fraction 4.5-5.0 phi Size fraction 5.0-5.5 phi Size fraction 5.5-6.0 phi Size fraction 6.0-6.5 phi Size fraction 6.5-7.0 phi Size fraction 7.0-7.5 phi Size fraction 7.5-8.0 phi Size fraction 8.0-8.5 phi Size fraction 8.5-9.0 phi Size fraction 9.0-9.5 phi Size fraction 9.5-10.0 phi Size fraction 10.0-10.5 phi Size fraction < 10.5 phi Percentile 01 Percentile 05 Percentile 16 Percentile 25 Percentile 50 Percentile 75 Percentile 84 Percentile 95 Grain size, mean Mean, standard deviation Skewness Size fraction > 2 mm, gravel Sand Silt Size fraction < 0.002 mm, clay Lithology/composition/facies Core wireline system Grain size, SEDIGRAPH 5000 Calculated Calculated after FOLK Grain size, sieving Grain size, sieving/settling tube CRP-1 Sampling/drilling ice Cape Roberts Project CRP DeSantis, L D Barrett, Peter J Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2), supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382 |
topic_facet |
DEPTH, sediment/rock Size fraction -1.0 to -0.5 phi Size fraction -0.5-0.0 phi Size fraction 0.0-0.5 phi Size fraction 0.5-1.0 phi Size fraction 1.0-1.5 phi Size fraction 1.5-2.0 phi Size fraction 2.0-2.5 phi Size fraction 2.5-3.0 phi Size fraction 3.0-3.5 phi Size fraction 3.5-4.0 phi Size fraction 4.0-4.5 phi Size fraction 4.5-5.0 phi Size fraction 5.0-5.5 phi Size fraction 5.5-6.0 phi Size fraction 6.0-6.5 phi Size fraction 6.5-7.0 phi Size fraction 7.0-7.5 phi Size fraction 7.5-8.0 phi Size fraction 8.0-8.5 phi Size fraction 8.5-9.0 phi Size fraction 9.0-9.5 phi Size fraction 9.5-10.0 phi Size fraction 10.0-10.5 phi Size fraction < 10.5 phi Percentile 01 Percentile 05 Percentile 16 Percentile 25 Percentile 50 Percentile 75 Percentile 84 Percentile 95 Grain size, mean Mean, standard deviation Skewness Size fraction > 2 mm, gravel Sand Silt Size fraction < 0.002 mm, clay Lithology/composition/facies Core wireline system Grain size, SEDIGRAPH 5000 Calculated Calculated after FOLK Grain size, sieving Grain size, sieving/settling tube CRP-1 Sampling/drilling ice Cape Roberts Project CRP |
description |
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 sediments analysed here are considered in terms of 3 textural facies: diamict, mud (silt and clay) and sand. Most of the Quaternary section but only 30% of the early Miocene section is diamict, a poorly sorted mixture of sand and mud with scattered clasts, indicating little wave or current influence on its texture. Although not definitive, diamict textures and other features suggest that the sediment originated as basal glacial debris but has been subsequently modified by minor winnowing, consistent with the field interpretation of this facies as ice-proximal and distal glaciomarine sediment. Sediments deposited directly from glacier ice appear to be lacking. Mud facies sediments, which comprise only 10% of the Quaternary section but a third of the early Miocene section, were deposited below wave base and largely from suspension, and show features (described elsewhere in this volume) indicative of the influence of both glacial and sediment gravity flow processes. Sand facies sediments have a considerable proportion of mud, normally more than 20%, but a well-sorted fine-very fine sand fraction. In the context of the early Miocene coastal setting we interpret these sediments as shoreface sands close to wave base. |
format |
Dataset |
author |
DeSantis, L D Barrett, Peter J |
author_facet |
DeSantis, L D Barrett, Peter J |
author_sort |
DeSantis, L D |
title |
Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2), supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382 |
title_short |
Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2), supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382 |
title_full |
Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2), supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382 |
title_fullStr |
Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2), supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382 |
title_full_unstemmed |
Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2), supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382 |
title_sort |
grain size analysis on core plugs of sediment core crp-1 (table 1, 2), supplement to: de santis, laura; barrett, peter j (1998): grain size analysis of samples from crp-1. terra antartica, 5(3), 375-382 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1998 |
url |
https://dx.doi.org/10.1594/pangaea.53548 https://doi.pangaea.de/10.1594/PANGAEA.53548 |
long_lat |
ENVELOPE(-126.773,-126.773,54.428,54.428) ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
geographic |
Barrett Cape Roberts |
geographic_facet |
Barrett Cape Roberts |
genre |
antartic* |
genre_facet |
antartic* |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.53548 |
_version_ |
1766287908786929664 |
spelling |
ftdatacite:10.1594/pangaea.53548 2023-05-15T14:15:33+02:00 Grain size analysis on core plugs of sediment core CRP-1 (Table 1, 2), supplement to: de Santis, Laura; Barrett, Peter J (1998): Grain size analysis of samples from CRP-1. Terra Antartica, 5(3), 375-382 DeSantis, L D Barrett, Peter J 1998 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.53548 https://doi.pangaea.de/10.1594/PANGAEA.53548 en eng PANGAEA - Data Publisher for Earth & Environmental Science Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY DEPTH, sediment/rock Size fraction -1.0 to -0.5 phi Size fraction -0.5-0.0 phi Size fraction 0.0-0.5 phi Size fraction 0.5-1.0 phi Size fraction 1.0-1.5 phi Size fraction 1.5-2.0 phi Size fraction 2.0-2.5 phi Size fraction 2.5-3.0 phi Size fraction 3.0-3.5 phi Size fraction 3.5-4.0 phi Size fraction 4.0-4.5 phi Size fraction 4.5-5.0 phi Size fraction 5.0-5.5 phi Size fraction 5.5-6.0 phi Size fraction 6.0-6.5 phi Size fraction 6.5-7.0 phi Size fraction 7.0-7.5 phi Size fraction 7.5-8.0 phi Size fraction 8.0-8.5 phi Size fraction 8.5-9.0 phi Size fraction 9.0-9.5 phi Size fraction 9.5-10.0 phi Size fraction 10.0-10.5 phi Size fraction < 10.5 phi Percentile 01 Percentile 05 Percentile 16 Percentile 25 Percentile 50 Percentile 75 Percentile 84 Percentile 95 Grain size, mean Mean, standard deviation Skewness Size fraction > 2 mm, gravel Sand Silt Size fraction < 0.002 mm, clay Lithology/composition/facies Core wireline system Grain size, SEDIGRAPH 5000 Calculated Calculated after FOLK Grain size, sieving Grain size, sieving/settling tube CRP-1 Sampling/drilling ice Cape Roberts Project CRP Supplementary Dataset dataset Dataset 1998 ftdatacite https://doi.org/10.1594/pangaea.53548 2021-11-05T12:55:41Z 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 sediments analysed here are considered in terms of 3 textural facies: diamict, mud (silt and clay) and sand. Most of the Quaternary section but only 30% of the early Miocene section is diamict, a poorly sorted mixture of sand and mud with scattered clasts, indicating little wave or current influence on its texture. Although not definitive, diamict textures and other features suggest that the sediment originated as basal glacial debris but has been subsequently modified by minor winnowing, consistent with the field interpretation of this facies as ice-proximal and distal glaciomarine sediment. Sediments deposited directly from glacier ice appear to be lacking. Mud facies sediments, which comprise only 10% of the Quaternary section but a third of the early Miocene section, were deposited below wave base and largely from suspension, and show features (described elsewhere in this volume) indicative of the influence of both glacial and sediment gravity flow processes. Sand facies sediments have a considerable proportion of mud, normally more than 20%, but a well-sorted fine-very fine sand fraction. In the context of the early Miocene coastal setting we interpret these sediments as shoreface sands close to wave base. Dataset antartic* DataCite Metadata Store (German National Library of Science and Technology) Barrett ENVELOPE(-126.773,-126.773,54.428,54.428) Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) |