Data Description

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Citation:
Raine, JI; Askin, RA (2001): (Table 1) Stratigraphical distribution of Cenozoic terrestrial palynomorphs from sediment core CRP-3. doi:10.1594/PANGAEA.183928,
Supplement to: Raine, J Ian; 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
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):
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: 7.7 m * Maximum DEPTH, sediment/rock: 798.0 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 * Recovery: 936.00 m * Penetration: 939.00 m * Location: Ross Sea * * Campaign: CRP-3 * * Basis: Sampling/drilling from ice * * Device: Core wireline system * * 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):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rock *DepthmGeocode
2Depth, top/min *Depth topmRaine, J Ian *
3Depth, bottom/max *Depth botmRaine, J Ian *
4Asteraceae *Astae#Raine, J Ian *Counting, palynology *Tubuliforae
5Campanulaceae *Camae#Raine, J Ian *Counting, palynology *questionable
6Caryophyllaceae *Cphae#Raine, J Ian *Counting, palynology *Stellaria type
7Caryophyllaceae *Cphae#Raine, J Ian *Counting, palynology *questionable
8Chenopodipollis sp. *Chenopodipollis sp.#Raine, J Ian *Counting, palynology *
9Cophosfora spp. *Cophosfora spp.#Raine, J Ian *Counting, palynology *
10Cyathidites minor *Cyathidites minor#Raine, J Ian *Counting, palynology *
11Cyperaceaepollis sp. *Cyperaceaepollis sp.#Raine, J Ian *Counting, palynology *questionable
12Dilwynites granulatus *D. granulatus#Raine, J Ian *Counting, palynology *
13Laevigatosporites spp. *Laevigatosporites spp.#Raine, J Ian *Counting, palynology *
14Lycopodiumsporites sp. *Lycopodiumsporites s#Raine, J Ian *Counting, palynology *
15Microcachrydites antarcticus *M. antarcticus#Raine, J Ian *Counting, palynology *
16Myricipites harrisii *M. harrisii#Raine, J Ian *Counting, palynology *
17Myrtaceidites sp. *Myrtaceidites sp.#Raine, J Ian *Counting, palynology *questionable
18Nothofagidites asperus *N. asperus#Raine, J Ian *Counting, palynology *
19Nothofagidites flemingii *N. flemingii#Raine, J Ian *Counting, palynology *
20Nothofagidites cf. flemingii *N. cf. flemingii#Raine, J Ian *Counting, palynology *
21Nothofagidites lachlaniae *N. lachlaniae#Raine, J Ian *Counting, palynology *
22Nothofagidites spp. *Nothofagidites spp.#Raine, J Ian *Counting, palynology *fusca group
23Aggregates *AggRaine, J Ian *Counting, palynology *Nothofagidites aggregates
24Podcarpidites cf. exiguus *P. cf. exiguus#Raine, J Ian *Counting, palynology *
25Podcarpidites sp. *Podcarpidites sp.#Raine, J Ian *Counting, palynology *var. a
26Podcarpidites sp. *Podcarpidites sp.#Raine, J Ian *Counting, palynology *var. b
27Podcarpidites sp. *Podcarpidites sp.#Raine, J Ian *Counting, palynology *var. c
28Podcarpidites sp. *Podcarpidites sp.#Raine, J Ian *Counting, palynology *var. d
29Podcarpidites sp. *Podcarpidites sp.#Raine, J Ian *Counting, palynology *var. e
30Podcarpidites spp. *Podcarpidites spp.#Raine, J Ian *Counting, palynology *
31Proteacidites sp. *Proteacidites sp.#Raine, J Ian *Counting, palynology *
32Ranunculaceae *Ranae#Raine, J Ian *Counting, palynology *
33Rugulatisporites sp. *Rugulatisporites sp.#Raine, J Ian *Counting, palynology *
34Stylidiaceae *Stylidiaceae#Raine, J Ian *Counting, palynology *questionable
35Trichotomosulcites subgranulatus *T. subgranulatus#Raine, J Ian *Counting, palynology *
36Trichotomosulcites sp. *Trichotomosulcites sp.#Raine, J Ian *Counting, palynology *
37Tricolpites sp. *Tricolpites sp.#Raine, J Ian *Counting, palynology *var. b
38Tricolpites sp. *Tricolpites sp.#Raine, J Ian *Counting, palynology *var. d
39Tricolpites sp. *Tricolpites sp.#Raine, J Ian *Counting, palynology *var. f
40Tricolpites spp. *Tricolpites spp.#Raine, J Ian *Counting, palynology *
41Triporopollenites sp. *Triporopollenites sp.#Raine, J Ian *Counting, palynology *
42Pollen, angiosperm indeterminata *Pollen angiosperm indet#Raine, J Ian *Counting, palynology *
43Spores indeterminata *Spo.indet#Raine, J Ian *Counting, palynology *
44Peninsulapollis cf. gillii *P. cf. gillii#Raine, J Ian *Counting, palynology *recycled
45Tricolporites cf. Paenestriatus *T. cf. Paenestriatus#Raine, J Ian *Counting, palynology *recycled
46Fungal mycelia *Fung myc#Raine, J Ian *Counting, palynology *Microthyriaceae
47Fungal spore indeterminata *Fun.s.indet#Raine, J Ian *Counting, palynology *
48Specimen count *Sp count#Raine, J Ian *Counting, palynology *
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