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Marino, Maria; Flores, José-Abel (2002): Table T1. Distribution of Eocene to Oligocene calcareous nannofossils, Hole 177-1090B. PANGAEA,, Supplement to: Marino, M; Flores, J-A (2002): Data Report: Calcareous nannofossil data from the Eocene to Oligocene, Leg 177, Hole 1090B. In: Gersonde, R; Hodell, DA; Blum, P (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 177, 1-9,

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Hole 1090B is located in the central part of the Subantarctic Zone on the southern flank of the Agulhas Ridge (42°54'S, 8°53'E). Hole 1090B was drilled to 397.5 meters below seafloor (mbsf), and Holocene to middle Eocene sediments were recovered. Core recovery of the Eocene to lower Oligocene interval was generally good, even though sediments were recovered by the extended core barrel (XCB) system (Shipboard Scientific Party, 1999). Because the paleomagnetic signal and nannofossil assemblages are well documented in this interval, Hole 1090B may represent a reference record to improve knowledge of the Eocene-Oligocene transition (Shipboard Scientific Party, 1999, doi:10.2973/
We analyzed the calcareous nannofossil assemblages of the middle Eocene to lower Oligocene interval, focusing especially on the Eocene-Oligocene transition, with quantitative investigations of nannofossil assemblages.
Latitude: -42.913700 * Longitude: 8.899700
Date/Time Start: 1997-12-26T15:22:00 * Date/Time End: 1997-12-28T14:55:00
Minimum DEPTH, sediment/rock: 204.40 m * Maximum DEPTH, sediment/rock: 397.59 m
177-1090B * Latitude: -42.913700 * Longitude: 8.899700 * Date/Time Start: 1997-12-26T15:22:00 * Date/Time End: 1997-12-28T14:55:00 * Elevation: -3699.4 m * Penetration: 397.5 m * Recovery: 373.23 m * Location: South Atlantic Ocean * Campaign: Leg177 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 397.5 m cored; 0 m drilled; 93.9 % recovery
Six calcareous nannofossil abundance levels were recorded, as follows: VA = very abundant (>50 specimens per field of view).A = abundant (11-50 specimens per field of view).C = common (1-10 specimens per field of view).F = few (0.1 to <1 specimens per field of view).R = rare (0.02 to <0.1 specimens per field of view).RR = very rare (<0.02 specimens per field of view).Preservation of nannofossils was recorded as good (G), moderate (M), poor (P), and very poor (VP). Some samples were barren (B) of calcareous nannofossils. Reworking phenomena were noted in some Eocene intervals.
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepthmGeocode
2Sample code/labelSample labelMarino, MariaDSDP/ODP/IODP sample designation
3Depth, compositeDepth compmcdMarino, MariaIntercore correlation
4Nannofossil abundanceNannos abundMarino, MariaAbundance estimate
5Nannofossils preservationNannos preservMarino, MariaAbundance estimate
6Nannofossils, reworked fossilNannos rew fossilMarino, MariaAbundance estimate
7Bicolumnus ovatusB. ovatusMarino, MariaAbundance estimate
8Blackites spp.Blackites spp.Marino, MariaAbundance estimate
9Braarudosphaera bigelowiiB. bigelowiiMarino, MariaAbundance estimate
10Bramletteius serraculoidesB. serraculoidesMarino, MariaAbundance estimate
11Cyclicargolithus floridanusC. floridanusMarino, MariaAbundance estimateC. floridanus (single circular cycles)
12Cyclicargolithus floridanusC. floridanusMarino, MariaAbundance estimate
13Calcidiscus sp.Calcidiscus sp.Marino, MariaAbundance estimate
14Chiasmolithus altusC. altusMarino, MariaAbundance estimate
15Chiasmolithus cf. C. consuetusC. cf. C. consuetusMarino, MariaAbundance estimate
16Chiasmolithus expansusC. expansusMarino, MariaAbundance estimate
17Chiasmolithus gigasC. gigasMarino, MariaAbundance estimate
18Chiasmolithus grandisC. grandisMarino, MariaAbundance estimate
19Chiasmolithus modestusC. modestusMarino, MariaAbundance estimateChiasmolithus modestus-nitidus
20Chiasmolithus oamaruensisC. oamaruensisMarino, MariaAbundance estimateChiasmolithus oamaruensis-altus
21Chiasmolithus oamaruensisC. oamaruensisMarino, MariaAbundance estimate
22Chiasmolithus solitusC. solitusMarino, MariaAbundance estimate
23Chiasmolithus spp.Chiasmolithus spp.Marino, MariaAbundance estimateChiasmolithus spp. (total)
24Clausicoccus spp.Clausicoccus spp.Marino, MariaAbundance estimateClausicoccus spp. (total)
25Coccolithus pelagicusC. pelagicusMarino, MariaAbundance estimate
26Coronocyclus sp.Coronocyclus sp.Marino, MariaAbundance estimateCoronociclus sp. (fairly elliptical)
27Cyclicargolithus abisectusC. abisectusMarino, MariaAbundance estimate
28Cyclicargolithus sp.Cyclicargolithus sp.Marino, MariaAbundance estimateCyclicargolithus sp. (intermediate C. floridanus-R. circus)
29Dictyococcites scrippsaeD. scrippsaeMarino, MariaAbundance estimate
30Dictyococcites spp.Dictyococcites spp.Marino, MariaAbundance estimateDictyococcites sp. (<4 µm)
31Discoaster barbadiensisD. barbadiensisMarino, MariaAbundance estimate
32Discoaster bifaxD. bifaxMarino, MariaAbundance estimate
33Discoaster binodosusD. binodosusMarino, MariaAbundance estimate
34Discoaster deflandreiD. deflandreiMarino, MariaAbundance estimateDiscoaster deflandrei gr.
35Discoaster saipanensisD. saipanensisMarino, MariaAbundance estimate
36Discoaster spp.Discoaster spp.Marino, MariaAbundance estimate
37Discoaster taniiD. taniiMarino, MariaAbundance estimate
38Discoaster nodiferD. nodiferMarino, MariaAbundance estimate
39Discoaster tanii ornatusD. tanii ornatusMarino, MariaAbundance estimate
40Ericsonia formosaE. formosaMarino, MariaAbundance estimate
41Ericsonia spp.Ericsonia spp.Marino, MariaAbundance estimate
42Helicosphaera compactaH. compactaMarino, MariaAbundance estimate
43Helicosphaera reticulataH. reticulataMarino, MariaAbundance estimate
44Isthmolithus recurvusI. recurvusMarino, MariaAbundance estimate
45Markalius cf. M. nudusM. cf. M. nudusMarino, MariaAbundance estimate
46Markalius inversusM. inversusMarino, MariaAbundance estimate
47Nannotetrina cristataN. cristataMarino, MariaAbundance estimate
48Nannotetrina fulgensN. fulgensMarino, MariaAbundance estimate
49Neococcolithes dubiusN. dubiusMarino, MariaAbundance estimate
50Pontosphaera multiporaP. multiporaMarino, MariaAbundance estimate
51Pontosphaera spp.Pontosphaera spp.Marino, MariaAbundance estimate
52Pyrocyclus sp.Pyrocyclus sp.Marino, MariaAbundance estimate
53Reticulofenestra bisectaR. bisectaMarino, MariaAbundance estimate
54Reticulofenestra circularR. circularMarino, MariaAbundance estimateReticulofenestra circular (5-7 µm)
55Reticulofenestra circusR. circusMarino, MariaAbundance estimateReticulofenestra circus (8-9 µm)
56Reticulofenestra daviesiiR. daviesiiMarino, MariaAbundance estimateReticulofenestra daviesi gr.
57Reticulofenestra oamaruensisR. oamaruensisMarino, MariaAbundance estimate
58Reticulofenestra samoduroviiR. samoduroviiMarino, MariaAbundance estimateReticulofenestra samodurovi-hillae
59Reticulofenestra spp.Reticulofenestra spp.Marino, MariaAbundance estimateReticulofenestra sp. (<3 µm)
60Reticulofenestra spp.Reticulofenestra spp.Marino, MariaAbundance estimateReticulofenestra sp. (3-5 µm)
61Reticulofenestra umbilicusR. umbilicusMarino, MariaAbundance estimate
62Reticulofestra reticulataR. reticulataMarino, MariaAbundance estimate
63Rhabdolithus spp.Rhabdolithus spp.Marino, MariaAbundance estimate
64Sphenolithus spinigerS. spinigerMarino, MariaAbundance estimate
65Sphenolithus furcatolithoidesS. furcatolithoidesMarino, MariaAbundance estimate
66Sphenolithus moriformisS. moriformisMarino, MariaAbundance estimate
67Sphenolithus obtususS. obtususMarino, MariaAbundance estimate
68Sphenolithus pseudoradiansS. pseudoradiansMarino, MariaAbundance estimate
69Sphenolithus radiansS. radiansMarino, MariaAbundance estimate
70Sphenolithus spp.Sphenolithus spp.Marino, MariaAbundance estimateSphenolithus spp. (total)
71Thoracosphaera sp.Thoracosphaera sp.Marino, MariaAbundance estimate
72Transversopontis obliquiponsT. obliquiponsMarino, MariaAbundance estimate
73Transversopontis sigmoidalisT. sigmoidalisMarino, MariaAbundance estimate
74Zygrhablithus bijugatusZ. bijugatusMarino, MariaAbundance estimate
75BiozoneBiozoneMarino, Maria
76Age, commentCommMarino, Maria
77Nannotetrina spp.Nannotetrina spp.Marino, MariaAbundance estimate
12662 data points

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