(Table 1) Detrital modes for sand grains in sediment core CRP-1
Detrital modes for the sand-size fraction in 24 samples from the CRP-1 drillcore are described. Most samples are largely composed of quartzo-feldspathic detritus sourced dominantly from Palaeozoic granitoids and quartzose sedimentary sequences. Minor contributions from basic lamprophyre dykes, felsi...
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Language: | English |
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1998
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.54979 https://doi.org/10.1594/PANGAEA.54979 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.54979 2023-05-15T14:04:42+02:00 (Table 1) Detrital modes for sand grains in sediment core CRP-1 Smellie, John L LATITUDE: -77.007580 * LONGITUDE: 163.755080 * DATE/TIME START: 1997-10-17T01:30:00 * DATE/TIME END: 1997-10-24T02:00:00 * MINIMUM DEPTH, sediment/rock: 24.53 m * MAXIMUM DEPTH, sediment/rock: 138.52 m 1998-01-15 text/tab-separated-values, 574 data points https://doi.pangaea.de/10.1594/PANGAEA.54979 https://doi.org/10.1594/PANGAEA.54979 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.54979 https://doi.org/10.1594/PANGAEA.54979 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Smellie, John L (1998): Sand grain detrital modes in CRP-1: provenance variations and influence of Miocene eruptions on the marine record in the McMurdo Sound region. Terra Antartica, 5(3), 579-587, hdl:10013/epic.28306.d001 16 km ENE Cape Roberts Amphibole Biotite Cape Roberts Project Coarse fraction/modal analysis Components indeterminata Core wireline system CRP CRP-1 CWS DEPTH sediment/rock Feldspar Kalifeldspar Lithology/composition/facies Matrix Metamorphite Mica Muscovite off Cape Roberts Ross Sea Antarctica Plagioclase Pyroxene Quartz angular polycrystalline rounded Rock fragments Sampling/drilling ice Sedimentary rock Volcanic glass brown clear Volcanite Dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.54979 2023-01-20T07:35:44Z Detrital modes for the sand-size fraction in 24 samples from the CRP-1 drillcore are described. Most samples are largely composed of quartzo-feldspathic detritus sourced dominantly from Palaeozoic granitoids and quartzose sedimentary sequences. Minor contributions from basic lamprophyre dykes, felsic dykes and possibly Kirkpatrick basalts are also identified as detrital components for the first time. The provenance also included a minor outcrop area of high-grade metamorphic rocks. Detritus derived from a Ferrar dolerite source is common throughout. It was possibly derived mainly from thick sills of the lower coastal ranges (intruding Palaeozoic and older "basement") rather than those sills intruding the stratigraphically higher Beacon sedimentary sequence, although this suggestion is not strongly constrained. Tephra particles from both magmatic and hydrovolcanic eruptions are well represented and persistent at all levels in the core, although no primary tephra layers are present. The volcanic influence is minor in most of the Quaternary samples analysed (although these are few) and most Miocene samples. Conversely, the topmost part of the Miocene sequence (above 62 metres below sea floor (mbsf)) is strongly affected by volcanism, with two major basic-intermediate eruptions represented in the detrital record (at c. 61 and 45 mbsf) and provisionally correlated with a volcano formerly situated near Mount Morning. A third eruption of evolved pumice is also recorded in the Miocene sequence at c. 116 mbsf. Dataset Antarc* Antarctica Ross Sea PANGAEA - Data Publisher for Earth & Environmental Science Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Mount Morning ENVELOPE(163.750,163.750,-78.450,-78.450) Ross Sea ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
16 km ENE Cape Roberts Amphibole Biotite Cape Roberts Project Coarse fraction/modal analysis Components indeterminata Core wireline system CRP CRP-1 CWS DEPTH sediment/rock Feldspar Kalifeldspar Lithology/composition/facies Matrix Metamorphite Mica Muscovite off Cape Roberts Ross Sea Antarctica Plagioclase Pyroxene Quartz angular polycrystalline rounded Rock fragments Sampling/drilling ice Sedimentary rock Volcanic glass brown clear Volcanite |
spellingShingle |
16 km ENE Cape Roberts Amphibole Biotite Cape Roberts Project Coarse fraction/modal analysis Components indeterminata Core wireline system CRP CRP-1 CWS DEPTH sediment/rock Feldspar Kalifeldspar Lithology/composition/facies Matrix Metamorphite Mica Muscovite off Cape Roberts Ross Sea Antarctica Plagioclase Pyroxene Quartz angular polycrystalline rounded Rock fragments Sampling/drilling ice Sedimentary rock Volcanic glass brown clear Volcanite Smellie, John L (Table 1) Detrital modes for sand grains in sediment core CRP-1 |
topic_facet |
16 km ENE Cape Roberts Amphibole Biotite Cape Roberts Project Coarse fraction/modal analysis Components indeterminata Core wireline system CRP CRP-1 CWS DEPTH sediment/rock Feldspar Kalifeldspar Lithology/composition/facies Matrix Metamorphite Mica Muscovite off Cape Roberts Ross Sea Antarctica Plagioclase Pyroxene Quartz angular polycrystalline rounded Rock fragments Sampling/drilling ice Sedimentary rock Volcanic glass brown clear Volcanite |
description |
Detrital modes for the sand-size fraction in 24 samples from the CRP-1 drillcore are described. Most samples are largely composed of quartzo-feldspathic detritus sourced dominantly from Palaeozoic granitoids and quartzose sedimentary sequences. Minor contributions from basic lamprophyre dykes, felsic dykes and possibly Kirkpatrick basalts are also identified as detrital components for the first time. The provenance also included a minor outcrop area of high-grade metamorphic rocks. Detritus derived from a Ferrar dolerite source is common throughout. It was possibly derived mainly from thick sills of the lower coastal ranges (intruding Palaeozoic and older "basement") rather than those sills intruding the stratigraphically higher Beacon sedimentary sequence, although this suggestion is not strongly constrained. Tephra particles from both magmatic and hydrovolcanic eruptions are well represented and persistent at all levels in the core, although no primary tephra layers are present. The volcanic influence is minor in most of the Quaternary samples analysed (although these are few) and most Miocene samples. Conversely, the topmost part of the Miocene sequence (above 62 metres below sea floor (mbsf)) is strongly affected by volcanism, with two major basic-intermediate eruptions represented in the detrital record (at c. 61 and 45 mbsf) and provisionally correlated with a volcano formerly situated near Mount Morning. A third eruption of evolved pumice is also recorded in the Miocene sequence at c. 116 mbsf. |
format |
Dataset |
author |
Smellie, John L |
author_facet |
Smellie, John L |
author_sort |
Smellie, John L |
title |
(Table 1) Detrital modes for sand grains in sediment core CRP-1 |
title_short |
(Table 1) Detrital modes for sand grains in sediment core CRP-1 |
title_full |
(Table 1) Detrital modes for sand grains in sediment core CRP-1 |
title_fullStr |
(Table 1) Detrital modes for sand grains in sediment core CRP-1 |
title_full_unstemmed |
(Table 1) Detrital modes for sand grains in sediment core CRP-1 |
title_sort |
(table 1) detrital modes for sand grains in sediment core crp-1 |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.54979 https://doi.org/10.1594/PANGAEA.54979 |
op_coverage |
LATITUDE: -77.007580 * LONGITUDE: 163.755080 * DATE/TIME START: 1997-10-17T01:30:00 * DATE/TIME END: 1997-10-24T02:00:00 * MINIMUM DEPTH, sediment/rock: 24.53 m * MAXIMUM DEPTH, sediment/rock: 138.52 m |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(163.750,163.750,-78.450,-78.450) ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
geographic |
Cape Roberts Mount Morning Ross Sea |
geographic_facet |
Cape Roberts Mount Morning Ross Sea |
genre |
Antarc* Antarctica Ross Sea |
genre_facet |
Antarc* Antarctica Ross Sea |
op_source |
Supplement to: Smellie, John L (1998): Sand grain detrital modes in CRP-1: provenance variations and influence of Miocene eruptions on the marine record in the McMurdo Sound region. Terra Antartica, 5(3), 579-587, hdl:10013/epic.28306.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.54979 https://doi.org/10.1594/PANGAEA.54979 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.54979 |
_version_ |
1766275941626019840 |