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Hannah, Mike J; Wilson, Graeme; Wrenn, John (2000): Marine palynomorph abundance estimates of sediment core CRP-2A (Fig. 2). PANGAEA,, Supplement to: Hannah, Mike J; Wilson, Gary S; Wrenn, John (2000): Oligocene and Miocene marine palynomorphs from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 503-511, hdl:10013/epic.28256.d001

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A diverse assemblage of marine palynomorphs was recovered from the Oligocene - Miocene section of CRP-2/2A. Most of the assemblage is composed of previously unrecognised species. Three distinct groups of marine palynomorph were recognised: (1) prasinophytes, mainly Cymatiosphaera, (2) acritarchs, mainly Leiosphaeridia and Sigmopollis although Leiofusa is an important component of the bottom half of the hole, and (3) dinoflagellate cysts. About 27 species of in situ dinoflagellate cysts were recorded, of which seven apparently undescribed species of Lejeunecysta form a prominent component. Reworked specimens of several species of the Paleogene Transantarctic Flora occur in CRP-2/2A sediments. Several abundance peaks of reworked taxa from the Transantarctic Flora are recorded. Three marine palynomorph zones were recognised (MP3, MP2, MP1), considered to be early Oligocene, late Oligocene, and late Oligocene/early Miocene in age respectively. Samples from the Quaternary and Pliocene part of CRP-2/2A were also examined. These proved either barren or yielded very sparse low diversity floras.
Latitude: -77.005980 * Longitude: 163.719450
Date/Time Start: 1998-10-16T07:30:00 * Date/Time End: 1998-11-25T14:20:00
Minimum DEPTH, sediment/rock: 13.315 m * Maximum DEPTH, sediment/rock: 624.145 m
CRP-2A (14.2 km at 096° true from Cape Roberts) * Latitude: -77.005980 * Longitude: 163.719450 * Date/Time Start: 1998-10-16T07:30:00 * Date/Time End: 1998-11-25T14:20:00 * Elevation: -177.9 m * Recovery: 624 m * Location: off Cape Roberts, Ross Sea, Antarctica * Campaign: CRP-2 * Basis: Sampling/drilling from ice * Method/Device: Core wireline system (CWS) * Comment: 921 m at 284° from CRP-1. Sea-ice thickness: 2.0 m (1 Oct) to 2.2 m (23 Nov). Sea riser embedded to 13.03 mbsf. Lateral ice movement: 9.87 m to east from 17 Oct to 23 Nov. HQ core to 199.31 mbsf. NQ core to 624.15 mbsf. 13.03 to 45.97 mbsf, 11.29 m (34%) partially following CRP-2. 45.07 to 624.15 mbsf, 548.67 m (95%) new hole. Deepest core-lithology: hard sandy siltstone. Deepest core-age: earliest Oligocene (ca. 33 Ma on diatoms, nannofossils and dinoflagellates)
r = rare, f = few, c = common, a = abundant
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepthmGeocode
2Depth, top/minDepth topmHannah, Mike J
3Depth, bottom/maxDepth botmHannah, Mike J
4Lithologic unit/sequenceUnitHannah, Mike J
5Pterospermella sp.Pterospermella sp.Hannah, Mike JPrasinophytes
6Cymatiosphaera spp.Cymatiosphaera spp.Hannah, Mike JPrasinophytes
7Tasmanites spp.Tasmanites spp.Hannah, Mike JPrasinophytes
8Leiosphaeridia spp.Leiosphaeridia spp.Hannah, Mike JAcritarchs
9Sigmopollis sp.Sigmopollis sp.Hannah, Mike JAcritarchs
10Acritarch sp.Acritarch sp.Hannah, Mike Jvar. 1, Acritarchs
11Micrhystridium spp.Micrhystridium spp.Hannah, Mike JAcritarchs
12Stellate acritarchS. acritarchHannah, Mike JAcritarchs
13Leiofusa sp.Leiofusa sp.Hannah, Mike JAcritarchs
14Batiacashaera cooperiB. cooperiHannah, Mike JIn Situ Dinoflagellates
15Batiacashaera spp.Batiacashaera spp.Hannah, Mike JIn Situ Dinoflagellates
16Lejeunecysta spp.Lejeunecysta spp.Hannah, Mike JIn Situ Dinoflagellates
17Lejeunecysta fallaxL. fallaxHannah, Mike JIn Situ Dinoflagellates
18Paralecaniella indentataP. indentataHannah, Mike JIn Situ Dinoflagellates
19Pterodinium cf. P. cingulatumP. cf. P. cingulatumHannah, Mike JIn Situ Dinoflagellates
20Impagidinium spp.Impagidinium spp.Hannah, Mike JIn Situ Dinoflagellates
21Lejeunecysta sp.Lejeunecysta sp.Hannah, Mike Jvar. 4, In Situ Dinoflagellates
22Lejeunecysta sp.Lejeunecysta sp.Hannah, Mike Jvar. 1, In Situ Dinoflagellates
23Lejeunecysta sp.Lejeunecysta sp.Hannah, Mike Jvar. 2, In Situ Dinoflagellates
24Lejeunecysta sp.Lejeunecysta sp.Hannah, Mike Jvar. 7, In Situ Dinoflagellates
25Lejeunecysta sp.Lejeunecysta sp.Hannah, Mike Jvar. 3, In Situ Dinoflagellates
26Lejeunecysta sp.Lejeunecysta sp.Hannah, Mike Jvar. 5, In Situ Dinoflagellates
27Lejeunecysta sp.Lejeunecysta sp.Hannah, Mike Jvar. 6, In Situ Dinoflagellates
28Paralecaniella sp.Paralecaniella sp.Hannah, Mike JIn Situ Dinoflagellates
29Brigantedinium pyneiB. pyneiHannah, Mike JIn Situ Dinoflagellates
30Phelodinium cranwelliaeP. cranwelliaeHannah, Mike JIn Situ Dinoflagellates
31Phelodinium sp.Phelodinium sp.Hannah, Mike JIn Situ Dinoflagellates
32Lejeunecysta cowieiL. cowieiHannah, Mike JIn Situ Dinoflagellates
33Brigantedinium sp.Brigantedinium sp.Hannah, Mike JIn Situ Dinoflagellates
34Brigantedinium sp.Brigantedinium sp.Hannah, Mike Jquestionable
35Microdinium spp.Microdinium spp.Hannah, Mike JIn Situ Dinoflagellates
36Batiacasphaera sp.Batiacasphaera sp.Hannah, Mike Jvar. A,In Situ Dinoflagellates
37Pyxidinopsis sp.Pyxidinopsis sp.Hannah, Mike JIn Situ Dinoflagellates
38Memranilarnacia sp.Memranilarnacia sp.Hannah, Mike JIn Situ Dinoflagellates
39Deflandrea sp.Deflandrea sp.Hannah, Mike JIn Situ Dinoflagellates
40Glaphyrocysta sp.Glaphyrocysta sp.Hannah, Mike JIn Situ Dinoflagellates
41Spiniferites ramosusS. ramosusHannah, Mike JIn Situ Dinoflagellates
42Cleistosphaeridium sp.Cleistosphaeridium sp.Hannah, Mike JIn Situ Dinoflagellates
43Corrudinium spp.Corrudinium spp.Hannah, Mike Jquestionable
44Selenopenphyx sp.Selenopenphyx sp.Hannah, Mike Jquestionable
45Spiniferites sp.Spiniferites sp.Hannah, Mike JIn Situ Dinoflagellates
46Thalassiphora pelagicaT. pelagicaHannah, Mike JIn Situ Dinoflagellates
47Valensiella sp.Valensiella sp.Hannah, Mike JIn Situ Dinoflagellates
48Pentadinium sp.Pentadinium sp.Hannah, Mike JIn Situ Dinoflagellates
49Cyclonephelium sp.Cyclonephelium sp.Hannah, Mike JIn Situ Dinoflagellates
50Alisocysta sp.Alisocysta sp.Hannah, Mike JIn Situ Dinoflagellates
51Impagidinium cf. I. elegansI. cf. I. elegansHannah, Mike JIn Situ Dinoflagellates
52Cometodinium sp.Cometodinium sp.Hannah, Mike JIn Situ Dinoflagellates
53Hystrichosphaeridium cf. H. patulumH. cf. H. patulumHannah, Mike JIn Situ Dinoflagellates
54Operculodinium sp.Operculodinium sp.Hannah, Mike JIn Situ Dinoflagellates
55Enneadocysta partridgeiE. partridgeiHannah, Mike JReworked Dinoflagellates
56Alterbidinium distinctumA. distinctumHannah, Mike JReworked Dinoflagellates
57Vozzhennikovia aperturaV. aperturaHannah, Mike JReworked Dinoflagellates
58Deflandrea antarcticaD. antarcticaHannah, Mike JReworked Dinoflagellates
59Spinidinium macmurdoenseS. macmurdoenseHannah, Mike JReworked Dinoflagellates
60Vozzhennikovia cf. V. aperturaV. cf. V. aperturaHannah, Mike JReworked Dinoflagellates
61Apectodinium homomorphumA. homomorphumHannah, Mike Jquestionable, Reworked Dinoflagellates
62Turbiosphaera filosaT. filosaHannah, Mike JReworked Dinoflagellates
63Areosphaeridium sp.Areosphaeridium sp.Hannah, Mike Jquestionable, Reworked Dinoflagellates
64Arachnodinium antarcticumA. antarcticumHannah, Mike JReworked Dinoflagellates
65Alterbidinium cf. A. distinctumA. cf. A. distinctumHannah, Mike JReworked Dinoflagellates
66Hystrichosphaeridium sp.Hystrichosphaeridium sp.Hannah, Mike JReworked Dinoflagellates
67Alterbidinium cf. A. asymmetricumA. cf. A. asymmetricumHannah, Mike JReworked Dinoflagellates
68Spinidinium cf. S. macmurdoenseS. cf. S. macmurdoenseHannah, Mike JReworked Dinoflagellates
69Alterbidinium asymetricumA. asymetricumHannah, Mike JReworked Dinoflagellates
70Hystrichosphaeridium tubiferumH. tubiferumHannah, Mike JReworked Dinoflagellates
71Foraminifera, liningsForam linHannah, Mike JOthers
72IndeterminataIndetHannah, Mike JOthers
73ScolecodontaScolecodontaHannah, Mike JOthers
1210 data points

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