Raine, J Ian; Askin, R A (2001): (Table 1) Stratigraphical distribution of Cenozoic terrestrial palynomorphs from sediment core CRP-3 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.183928, Supplement to: Raine, JI; Askin, RA (2001): Terrestrial palynology of Cape Roberts Project drillhole CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 389-400, hdl:10013/epic.28233.d001
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Abstract:
Sparse low diversity early Oligocene spore-pollen assemblages above c. 410 mbsf (meters blow sea floor) in CRP-3 are dominated by Nothofagus pollen, and are very similar in composition to those from the lower part of CRP-2A. Anther-derived pollen aggregates, and a Nothofagus leaf at 44.12 mbsf show that the palynomorphs were derived from vegetation growing at the time of deposition. This woody vegetation included several species of Nothofagus and podocarpaceous conifers, a few other angiosperm families, and few cryptogams except for bryophytes, In favourable sites the vegetation may have comprised a low scrub or closed forest intermediate stature and floristic richness between that of the Eocene and the limited vegetation of the late Oligocene to earl Miocene. It may have similar to Nothofagus woodland of the present-day Magellanic region, with summer mean daily temperatures at sea level of c. 10-12° C. More stunted vegetation would have existed in exposed and upland sites. Wetland vegetation appears to have been minor, although Coptospora may in part represent a mire community.
Below c. 410 mbsf samples are mostly barren, probably due to non-deposition of fine particles and dilution by high sediment deposition. A meagre but relatively high diversity assemblage at 781.36 mbsf contains Casuarina-type pollen, unknown in the higher CRP sequence in Eocene strata of CIROS-1 and glacial erratics of the McMurdo Sound region. This limited data is consistent with Eocene dating of basal CRP-3 Cenozoic sediments from magnetostratigraphy.
Project(s):
Cape Roberts Project (CRP)
Coverage:
Latitude: -77.006000 * Longitude: 163.719000
Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00
Minimum DEPTH, sediment/rock: 7.730 m * Maximum DEPTH, sediment/rock: 798.035 m
Event(s):
CRP-3 * Latitude: -77.006000 * Longitude: 163.719000 * Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00 * Elevation: -295.0 m * Penetration: 939 m * Recovery: 936 m * Location: Ross Sea * Campaign: CRP-3 * Basis: Sampling/drilling from ice * Method/Device: Core wireline system (CWS) * Comment: 11.76 km at 76° true from Cape Roberts, 2.04 km at 225° true from CRP-2. Fast ice thickness: 2.0 to 2.2 m. Sea rise embedded to 9.55 mbsf. Lateral ice movement from spudding 5.0 m to 82° true. HQ core to 345.85 mbsf. NQ core to 939.42 mbsf. Core recovery 97%. Phase 1 logging to 345 mbsf, Phase 2 logging to 773 mbsf, Phase 3 logging to 918 mbsf. Deepest Cenozoic lithology and depth: sandstone breccia from 822.87 to 823.11 mbsf. Age of oldest Cenozoic strata: earliest Oligocene or latest Eocene. Deepest core lithology and depth: light red-brown quartz-cemented quartz sandstone to 939.42 mbsf. Age of bedrock: (mid?) Devonian.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Depth, top/min | Depth top | m | Raine, J Ian | ||
| 3 | Depth, bottom/max | Depth bot | m | Raine, J Ian | ||
| 4 | Asteraceae | Astae | # | Raine, J Ian | Counting, palynology | Tubuliforae |
| 5 | Campanulaceae | Camae | # | Raine, J Ian | Counting, palynology | questionable |
| 6 | Caryophyllaceae | Cphae | # | Raine, J Ian | Counting, palynology | Stellaria type |
| 7 | Caryophyllaceae | Cphae | # | Raine, J Ian | Counting, palynology | questionable |
| 8 | Chenopodipollis sp. | Chenopodipollis sp. | # | Raine, J Ian | Counting, palynology | |
| 9 | Cophosfora spp. | Cophosfora spp. | # | Raine, J Ian | Counting, palynology | |
| 10 | Cyathidites minor | Cyathidites minor | # | Raine, J Ian | Counting, palynology | |
| 11 | Cyperaceaepollis sp. | Cyperaceaepollis sp. | # | Raine, J Ian | Counting, palynology | questionable |
| 12 | Dilwynites granulatus | D. granulatus | # | Raine, J Ian | Counting, palynology | |
| 13 | Laevigatosporites spp. | Laevigatosporites spp. | # | Raine, J Ian | Counting, palynology | |
| 14 | Lycopodiumsporites sp. | Lycopodiumsporites s | # | Raine, J Ian | Counting, palynology | |
| 15 | Microcachrydites antarcticus | M. antarcticus | # | Raine, J Ian | Counting, palynology | |
| 16 | Myricipites harrisii | M. harrisii | # | Raine, J Ian | Counting, palynology | |
| 17 | Myrtaceidites sp. | Myrtaceidites sp. | # | Raine, J Ian | Counting, palynology | questionable |
| 18 | Nothofagidites asperus | N. asperus | # | Raine, J Ian | Counting, palynology | |
| 19 | Nothofagidites flemingii | N. flemingii | # | Raine, J Ian | Counting, palynology | |
| 20 | Nothofagidites cf. flemingii | N. cf. flemingii | # | Raine, J Ian | Counting, palynology | |
| 21 | Nothofagidites lachlaniae | N. lachlaniae | # | Raine, J Ian | Counting, palynology | |
| 22 | Nothofagidites spp. | Nothofagidites spp. | # | Raine, J Ian | Counting, palynology | fusca group |
| 23 | Aggregates | Agg | Raine, J Ian | Counting, palynology | Nothofagidites aggregates | |
| 24 | Podcarpidites cf. exiguus | P. cf. exiguus | # | Raine, J Ian | Counting, palynology | |
| 25 | Podcarpidites sp. | Podcarpidites sp. | # | Raine, J Ian | Counting, palynology | var. a |
| 26 | Podcarpidites sp. | Podcarpidites sp. | # | Raine, J Ian | Counting, palynology | var. b |
| 27 | Podcarpidites sp. | Podcarpidites sp. | # | Raine, J Ian | Counting, palynology | var. c |
| 28 | Podcarpidites sp. | Podcarpidites sp. | # | Raine, J Ian | Counting, palynology | var. d |
| 29 | Podcarpidites sp. | Podcarpidites sp. | # | Raine, J Ian | Counting, palynology | var. e |
| 30 | Podcarpidites spp. | Podcarpidites spp. | # | Raine, J Ian | Counting, palynology | |
| 31 | Proteacidites sp. | Proteacidites sp. | # | Raine, J Ian | Counting, palynology | |
| 32 | Ranunculaceae | Ranae | # | Raine, J Ian | Counting, palynology | |
| 33 | Rugulatisporites sp. | Rugulatisporites sp. | # | Raine, J Ian | Counting, palynology | |
| 34 | Stylidiaceae | Stylidiaceae | # | Raine, J Ian | Counting, palynology | questionable |
| 35 | Trichotomosulcites subgranulatus | T. subgranulatus | # | Raine, J Ian | Counting, palynology | |
| 36 | Trichotomosulcites sp. | Trichotomosulcites sp. | # | Raine, J Ian | Counting, palynology | |
| 37 | Tricolpites sp. | Tricolpites sp. | # | Raine, J Ian | Counting, palynology | var. b |
| 38 | Tricolpites sp. | Tricolpites sp. | # | Raine, J Ian | Counting, palynology | var. d |
| 39 | Tricolpites sp. | Tricolpites sp. | # | Raine, J Ian | Counting, palynology | var. f |
| 40 | Tricolpites spp. | Tricolpites spp. | # | Raine, J Ian | Counting, palynology | |
| 41 | Triporopollenites sp. | Triporopollenites sp. | # | Raine, J Ian | Counting, palynology | |
| 42 | Pollen, angiosperm indeterminata | Pollen angiosperm indet | # | Raine, J Ian | Counting, palynology | |
| 43 | Spores indeterminata | Spo.indet | # | Raine, J Ian | Counting, palynology | |
| 44 | Peninsulapollis cf. gillii | P. cf. gillii | # | Raine, J Ian | Counting, palynology | recycled |
| 45 | Tricolporites cf. Paenestriatus | T. cf. Paenestriatus | # | Raine, J Ian | Counting, palynology | recycled |
| 46 | Fungal mycelia | Fung myc | # | Raine, J Ian | Counting, palynology | Microthyriaceae |
| 47 | Fungal spore indeterminata | Fun.s.indet | # | Raine, J Ian | Counting, palynology | |
| 48 | Specimen count | Sp count | # | Raine, J Ian | Counting, palynology |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3868 data points
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