Geochemical analysis of minerals from sediment core CRP-2 in the Ross Sea, Antarctica, supplement to: Talarico, Franco M; Sandroni, Sonja; Fielding, Christopher R; Atkins, Cliff (2000): Variability, petrography and provenance of basement clasts in core from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 529-544
Distribution patterns, petrography, whole-rock and mineral chemistry, and shape and fabric data are described for the most representative basement lithologies occurring as clasts (granule to bolder grain-size class) from the 625 m deep CRP-2/2A drillcore. A major change in the distribution pattern o...
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ftdatacite:10.1594/pangaea.510755 2023-05-15T13:47:06+02:00 Geochemical analysis of minerals from sediment core CRP-2 in the Ross Sea, Antarctica, supplement to: Talarico, Franco M; Sandroni, Sonja; Fielding, Christopher R; Atkins, Cliff (2000): Variability, petrography and provenance of basement clasts in core from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 529-544 Talarico, Franco M Sandroni, Sonja Fielding, Christopher R Atkins, Cliff 2000 application/zip https://dx.doi.org/10.1594/pangaea.510755 https://doi.pangaea.de/10.1594/PANGAEA.510755 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 Core wireline system CRP-2 Sampling/drilling from ice Cape Roberts Project CRP Collection article Supplementary Collection of Datasets 2000 ftdatacite https://doi.org/10.1594/pangaea.510755 2021-11-05T12:55:41Z Distribution patterns, petrography, whole-rock and mineral chemistry, and shape and fabric data are described for the most representative basement lithologies occurring as clasts (granule to bolder grain-size class) from the 625 m deep CRP-2/2A drillcore. A major change in the distribution pattern of the clast types occurs at c. 310 mbsf., with granitoid-dominated clasts above and mainly dolerite clasts below; moreover, compositional and modal data suggest a further division into seven main detrital assemblages or petrofacies. In spite of this variability, most granitoid pebbles consist of either pink or grey biotite±hornblende monzogranites. Other less common and ubiquitous lithologies include biotite syenogranite, biotite-hornblende granodiorite, tonalite, monzogranitic porphyries (very common below 310 mbsf), microgranite, and subordinately, monzogabbro, Ca-silicate rocks, biotite-clinozoisite schist and biotite orthogneiss (restricted to the pre-Pliocene strata). The ubiquitous occurrence of biotite±hornblende monzogranite pebbles in both the Quaternary-Pliocene and Miocene-Oligocene sections, apparently reflects the dominance of these lithologies in the onshore basement, and particularly in the Cambro-Ordovician Granite Harbour Igneous Complex which forms the most extensive outcrop in southern Victoria Land. The petrographical features of the other CRP-2/2A pebble lithologies are consistent with a supply dominantly from areas of the Transantarctic Mountains facing the CRP-2/2A site, and they thus provide further evidence of a local provenance for the supply of basement clasts to the CRP-2/2A sedimentary strata. Article in Journal/Newspaper Antarc* Antarctica antartic* Ross Sea Victoria Land DataCite Metadata Store (German National Library of Science and Technology) Ross Sea Victoria Land Transantarctic Mountains Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Granite Harbour ENVELOPE(162.733,162.733,-76.883,-76.883) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Core wireline system CRP-2 Sampling/drilling from ice Cape Roberts Project CRP |
spellingShingle |
Core wireline system CRP-2 Sampling/drilling from ice Cape Roberts Project CRP Talarico, Franco M Sandroni, Sonja Fielding, Christopher R Atkins, Cliff Geochemical analysis of minerals from sediment core CRP-2 in the Ross Sea, Antarctica, supplement to: Talarico, Franco M; Sandroni, Sonja; Fielding, Christopher R; Atkins, Cliff (2000): Variability, petrography and provenance of basement clasts in core from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 529-544 |
topic_facet |
Core wireline system CRP-2 Sampling/drilling from ice Cape Roberts Project CRP |
description |
Distribution patterns, petrography, whole-rock and mineral chemistry, and shape and fabric data are described for the most representative basement lithologies occurring as clasts (granule to bolder grain-size class) from the 625 m deep CRP-2/2A drillcore. A major change in the distribution pattern of the clast types occurs at c. 310 mbsf., with granitoid-dominated clasts above and mainly dolerite clasts below; moreover, compositional and modal data suggest a further division into seven main detrital assemblages or petrofacies. In spite of this variability, most granitoid pebbles consist of either pink or grey biotite±hornblende monzogranites. Other less common and ubiquitous lithologies include biotite syenogranite, biotite-hornblende granodiorite, tonalite, monzogranitic porphyries (very common below 310 mbsf), microgranite, and subordinately, monzogabbro, Ca-silicate rocks, biotite-clinozoisite schist and biotite orthogneiss (restricted to the pre-Pliocene strata). The ubiquitous occurrence of biotite±hornblende monzogranite pebbles in both the Quaternary-Pliocene and Miocene-Oligocene sections, apparently reflects the dominance of these lithologies in the onshore basement, and particularly in the Cambro-Ordovician Granite Harbour Igneous Complex which forms the most extensive outcrop in southern Victoria Land. The petrographical features of the other CRP-2/2A pebble lithologies are consistent with a supply dominantly from areas of the Transantarctic Mountains facing the CRP-2/2A site, and they thus provide further evidence of a local provenance for the supply of basement clasts to the CRP-2/2A sedimentary strata. |
format |
Article in Journal/Newspaper |
author |
Talarico, Franco M Sandroni, Sonja Fielding, Christopher R Atkins, Cliff |
author_facet |
Talarico, Franco M Sandroni, Sonja Fielding, Christopher R Atkins, Cliff |
author_sort |
Talarico, Franco M |
title |
Geochemical analysis of minerals from sediment core CRP-2 in the Ross Sea, Antarctica, supplement to: Talarico, Franco M; Sandroni, Sonja; Fielding, Christopher R; Atkins, Cliff (2000): Variability, petrography and provenance of basement clasts in core from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 529-544 |
title_short |
Geochemical analysis of minerals from sediment core CRP-2 in the Ross Sea, Antarctica, supplement to: Talarico, Franco M; Sandroni, Sonja; Fielding, Christopher R; Atkins, Cliff (2000): Variability, petrography and provenance of basement clasts in core from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 529-544 |
title_full |
Geochemical analysis of minerals from sediment core CRP-2 in the Ross Sea, Antarctica, supplement to: Talarico, Franco M; Sandroni, Sonja; Fielding, Christopher R; Atkins, Cliff (2000): Variability, petrography and provenance of basement clasts in core from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 529-544 |
title_fullStr |
Geochemical analysis of minerals from sediment core CRP-2 in the Ross Sea, Antarctica, supplement to: Talarico, Franco M; Sandroni, Sonja; Fielding, Christopher R; Atkins, Cliff (2000): Variability, petrography and provenance of basement clasts in core from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 529-544 |
title_full_unstemmed |
Geochemical analysis of minerals from sediment core CRP-2 in the Ross Sea, Antarctica, supplement to: Talarico, Franco M; Sandroni, Sonja; Fielding, Christopher R; Atkins, Cliff (2000): Variability, petrography and provenance of basement clasts in core from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 529-544 |
title_sort |
geochemical analysis of minerals from sediment core crp-2 in the ross sea, antarctica, supplement to: talarico, franco m; sandroni, sonja; fielding, christopher r; atkins, cliff (2000): variability, petrography and provenance of basement clasts in core from crp-2/2a, victoria land basin, antarctica. terra antartica, 7(4), 529-544 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2000 |
url |
https://dx.doi.org/10.1594/pangaea.510755 https://doi.pangaea.de/10.1594/PANGAEA.510755 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(162.733,162.733,-76.883,-76.883) |
geographic |
Ross Sea Victoria Land Transantarctic Mountains Cape Roberts Granite Harbour |
geographic_facet |
Ross Sea Victoria Land Transantarctic Mountains Cape Roberts Granite Harbour |
genre |
Antarc* Antarctica antartic* Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica antartic* Ross Sea Victoria Land |
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.510755 |
_version_ |
1766246328966316032 |