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Gartner, Stefan (1992): Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1). PANGAEA, https://doi.org/10.1594/PANGAEA.687629, Supplement to: Gartner, S (1992): Miocene nannofossil chronology in the North Atlantic, DSDP Site 608. Marine Micropaleontology, 18(4), 307-331, https://doi.org/10.1016/0377-8398(92)90045-L

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Abstract:
DSDP North Atlantic Site 608 yielded an excellent Miocene pelagic section which affords a further opportunity for elucidating the chronology of the calcareous nannofossil succession in the framework of magnetostratigraphic control. Most of the conventional (zonal) markers have been documented for this site and some of the earlier results are confirmed and refined. In addition several unconventional and less known markers have been added. The first two are the highest (last) occurrence of Sphenolithus delphix and Sphenolithus capricornutus at 23.6 Ma, which is immediately above the Oligocene-Miocene boundary as identified by the last occurrence of Reticulofenestra bisecta at 23.7 Ma. The next unconventional datum is the highest (last) occurrence of Ilselithina fusa at 22.8 Ma, which is also the highest (last) occurrence of Helicosphaera recta. Calcidiscus tropicus' lowest (first) occurrence is at 19.5 Ma, which is also the lowest occurrence of Sphenolithus belemnos, and Calcidiscus leptoporus' lowest (first) occurrence coincides with that of Sphenolithus heteromorphus at 18.5 Ma. Sphenolithus dissimilis' highest (last) occurrence is at 18.2 Ma and the Calcidiscus premacintyrei lowest (first) and highest (last) occurrences are, respectively, at 17.7 and 11.7 Ma. Discoaster braarudii occurs from 11.6 to 11.3 Ma and its highest (last) occurrence corresponds to that of Cyclicargolithus floridanus. Minylitha convallis occurs from 9.0 to 6.9 Ma. Within the range of Minylitha, at 8.0 Ma, a major shift occurs in reticulofenestrid placoliths from dominantly large (Reticulofenestra pseudoumbilicus) and medium size (Reticulofenestra minutula) species below to significant numbers of very small species (Dictyococcites productus and Gephyrocapsa) above. This is interpreted to be a major, though perhaps seasonal, change of productivity of the North Atlantic at Site 608.
A new genus and species Cryptococcolithus takayamae, is described and a variety, Reticulofenestra pseudoumbilicus var. amplus is identified.
Project(s):
Coverage:
Latitude: 42.836700 * Longitude: -23.087500
Date/Time Start: 1983-07-13T00:00:00 * Date/Time End: 1983-07-13T00:00:00
Minimum ORDINAL NUMBER: 1 * Maximum ORDINAL NUMBER: 217
Event(s):
94-608 * Latitude: 42.836700 * Longitude: -23.087500 * Date/Time: 1983-07-13T00:00:00 * Elevation: -3526.0 m * Penetration: 530.3 m * Recovery: 428.3 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 59 cores; 529.3 m cored; 0 m drilled; 80.9 % recovery
Comment:
V = very rare (<1 specimen per 50 fields (<0.04 %), R = rare (1 specimen per 11-50 fields, ~0.04-0.18 %), F = few (1 specimen per 2-10 fields (~0.18-0.9 %), C = common (1-5 specimens per 1 field (~1.8-9 %), A = abundant (6-25 specimens per 1 field (~9-45 %), W = very abundant (>25 specimens per field (>45 %)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1ORDINAL NUMBEROrd NoGeocode
2Sample code/labelSample labelGartner, StefanODP sample designation
3Amaurolithus delicatusA. delicatusGartner, Stefan
4Amaurolithus ninaeA. ninaeGartner, Stefan
5Amaurolithus primusA. primusGartner, Stefan
6Calcidiscus leptoporusC. leptoporusGartner, Stefan
7Calcidiscus macintyreiC. macintyreiGartner, Stefan
8Calcidiscus premacintyreiC. premacintyreiGartner, Stefan
9Calcidiscus tropicusC. tropicusGartner, Stefanundifferentiated
10Calcidiscus tropicusC. tropicusGartner, Stefanvar. L
11Calcidiscus tropicusC. tropicusGartner, Stefanvar. S
12Catinaster calyculusC. calyculusGartner, Stefan
13Catinaster sp.Catinaster sp.Gartner, Stefanquestionable, of Perch-Nielsen
14Coccolithus miopelagicusC. miopelagicusGartner, Stefan
15Coccolithus pelagicusC. pelagicusGartner, Stefan
16Coccolithus pliopelagicusC. pliopelagicusGartner, Stefan
17Coccolithus streckeriC. streckeriGartner, Stefan
18Coronocyclus nitescensC. nitescensGartner, Stefan
19Cribrocentrum latiponsC. latiponsGartner, Stefan
20Cryptococcolithus takayamaeC. takayamaeGartner, Stefan
21Cyclicargolithus floridanusC. floridanusGartner, Stefan
22Cyclolithella protoannulaC. protoannulaGartner, Stefan
23Cyclolithella rotulaC. rotulaGartner, Stefan
24Dictyococcites abisectusD. abisectusGartner, Stefan
25Dictyococcites bisectusD. bisectusGartner, Stefan
26Discoaster asymmetricusD. asymmetricusGartner, Stefan
27Discoaster bellusD. bellusGartner, Stefan
28Discoaster berggreniiD. berggreniiGartner, Stefan
29Discoaster bolliiD. bolliiGartner, Stefan
30Discoaster braarudiiD. braarudiiGartner, Stefan
31Discoaster brouweriD. brouweriGartner, Stefan
32Discoaster calculosusD. calculosusGartner, Stefan
33Discoaster deflandreiD. deflandreiGartner, Stefan
34Discoaster druggiiD. druggiiGartner, Stefan
35Discoaster exilisD. exilisGartner, Stefan
36Discoaster hamatusD. hamatusGartner, Stefan
37Discoaster kugleriD. kugleriGartner, Stefan
38Discoaster loeblichiiD. loeblichiiGartner, Stefan
39Discoaster neohamatusD. neohamatusGartner, Stefan
40Discoaster neorectusD. neorectusGartner, Stefan
41Discoaster obtususD. obtususGartner, Stefan
42Discoaster pentaradiatusD. pentaradiatusGartner, Stefan
43Discoaster prepentaradiatusD. prepentaradiatusGartner, Stefan
44Discoaster quinqueramusD. quinqueramusGartner, Stefan
45Discoaster surculusD. surculusGartner, Stefan
46Discoaster variabilisD. variabilisGartner, Stefan
47Discolithina sp.Discolithina sp.Gartner, Stefan
48Helicosphaera ampliapertaH. ampliapertaGartner, Stefan
49Helicosphaera carteriH. carteriGartner, Stefan
50Helicosphaera granulataH. granulataGartner, Stefan
51Helicosphaera intermediaH. intermediaGartner, Stefan
52Helicosphaera parallelaH. parallelaGartner, Stefan
53Helicosphaera perch-nielseniaeH. perch-nielseniaeGartner, Stefan
54Helicosphaera rectaH. rectaGartner, Stefan
55Helicosphaera selliiH. selliiGartner, Stefan
56Helicosphaera sp.Helicosphaera sp.Gartner, Stefanaff. H. parallela
57Helicosphaera truempyiH. truempyiGartner, Stefan
58Ilselithina fusaI. fusaGartner, Stefan
59Minylitha convallisM. convallisGartner, Stefan
60Reticulofenestra minutaR. minutaGartner, Stefans.l.
61Reticulofenestra minutulaR. minutulaGartner, Stefan
62Reticulofenestra productaR. productaGartner, Stefan
63Reticulofenestra pseudoumbilicusR. pseudoumbilicusGartner, Stefan
64Reticulofenestra pseudoumbilicus var. amR. pseudoumbilicus var. amGartner, Stefanvar. amplus
65Scyphosphaera amphoraS. amphoraGartner, Stefan
66Scyphosphaera pulcherrimaS. pulcherrimaGartner, Stefan
67Sphenolithus abiesS. abiesGartner, Stefan
68Sphenolithus belemnosS. belemnosGartner, Stefan
69Sphenolithus capricornutusS. capricornutusGartner, Stefan
70Sphenolithus ciperoensisS. ciperoensisGartner, Stefan
71Sphenolithus conicusS. conicusGartner, Stefan
72Sphenolithus delphixS. delphixGartner, Stefan
73Sphenolithus dissimilisS. dissimilisGartner, Stefan
74Sphenolithus heteromorphusS. heteromorphusGartner, Stefan
75Sphenolithus moriformisS. moriformisGartner, Stefan
76Triquetrorhabdulus carinatusT. carinatusGartner, Stefan
77Triquetrorhabdulus milowiiT. milowiiGartner, Stefan
78Triquetrorhabdulus rugosusT. rugosusGartner, Stefan
79Zygrhablithus bijugatusZ. bijugatusGartner, Stefan
80Cyclolithella cricotaC. cricotaGartner, Stefanaff. C. cricota
Size:
17143 data points

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