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Talarico, Franco M; Sandroni, Sonja (1998): Petrographical classification and mineral assemblage of basement clasts from the Quaternary and Miocene sections of sediment core CRP-1 (Table 1). PANGAEA, https://doi.org/10.1594/PANGAEA.54982, Supplement to: Talarico, FM; Sandroni, S (1998): Petrography, mineral chemistry and provenance of basement clasts in the CRP-1 drillcore (Victoria Land Basin, Antarctica). Terra Antartica, 5(3), 601-610, hdl:10013/epic.28304.d001

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Abstract:
Petrographical and mineral chemistry data are described for the mist representative basement lithologies occurring as clasts (pebble grain-size class) from the CRP-1 drillhole. Most pebbles consits of either undeformed or foliated biotite with or without hornblende monzogranites. Other rock types include biotite with or without garnet syenogranitr, biotite-hornblende granodiorite, tonalite, monzogranitic porphyries, haplogranite, quartz-monzonite (restricted to the Quaternary section), Ca-silicate rocks and biotite amphibolite (restricted to the Miocene strata). The common and ubiquitous occurence of biotite with or without hornblende monzogranite pebbles, in both the Quaternary and Miocene sections, apparently mirrors the dominance of these rock types in the granitoid assemblages which are presently exposed in the upper Precambrian-lower Paleozoic basement of the south Victoria Land. The other CRP-1 pebble lithologies show petrographical features which consitently support a dominant supply from areas of the Transantarctic Mountains located to the west and south-west of the CRP-1 site, and they thus furthercorroborate a model of local provenance for the supply of basement clasts to the CRP-1 sedimentary strata.
Project(s):
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: 16.07 m * Maximum DEPTH, sediment/rock: 138.45 m
Event(s):
CRP-1 (16 km ENE Cape Roberts) * Latitude: -77.007580 * Longitude: 163.755080 * Date/Time Start: 1997-10-17T01:30:00 * Date/Time End: 1997-10-24T02:00:00 * Elevation: -153.5 m * Penetration: 132.06 m * Recovery: 113.32 m * Location: off Cape Roberts, Ross Sea, Antarctica * Campaign: CRP-1 * Basis: Sampling/drilling ice * Device: Core wireline system (CWS) * Comment: sea ice thickness: 1.60 m, recovery 86 %. Age and lithology of oldest strata: 22-24 Ma; mudstone with scattered pebbles.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2Sample code/labelSample labelTalarico, Franco M
3Clast shapeShapeTalarico, Franco M
4Clast length aclast ammTalarico, Franco M
5Clast length bclast bmmTalarico, Franco M
6Clast length cclast cmmTalarico, Franco M
7Lithology/composition/faciesLithologyTalarico, Franco M
8Mineral assemblageMin assemblTalarico, Franco MMineral abbreviations are according to Kretz (1983). Mineral phases are listed in order of decreasing abundance, and the modal contents of essential phases are given as percentages, t = trace (< 1 % modal content), s = mineral phase of secondary origin
9Lithologic unit/sequenceUnitTalarico, Franco M
Size:
232 data points

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