Citation:

odp.proc.sr.183.017.2003

Name: (Table T1) Quaternary, Miocene, and Oligocene calcareous nannofossil stratigraphy of ODP Hole 183-1139A sediments
Published: 2003
License: https://creativecommons.org/licenses/by/3.0/

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Published: 2003 (exact date unknown) • DOI registered: 2012-07-27

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Abstract:

The distribution of calcareous nannofossils at Ocean Drilling Program Site 1139 on Skiff Bank off the western edge of the Northern Kerguelen Plateau has been used to delineate Quaternary, middle Miocene-middle Oligocene, and lower Oligocene sediments in an expanded 385-m rotary-cored section. Sedimentation rates through most of the Tertiary are high (average = 23 m/m.y.) as a result of clastic input and dilution by high siliceous productivity; chert, however, was encountered in only a single sample. These characteristics, plus the presence of multiple, reasonably well preserved siliceous and calcareous microfossil groups deposited well above the calcite compensation depth, make this site a potential candidate for more detailed coring for paleoceanographic objectives in the future.

A scanning electron microscope study revealed that diagenetic etching, apparently of gephyrocapsids, caused some of these placoliths to superficially resemble Emiliania huxleyi at levels in the Quaternary well below the evolutionary first occurrence of this taxon. Other larger specimens of etched gephyrocapsids and/or reticulofenestrids resembled Pseudoemiliania lacunosa. These observations suggest that caution should be exercised when age-dating Quaternary sediments not necessarily rich in carbonate. An unusual Braarudosphaera bloom recorded in upper Oligocene sediments on Skiff Bank is similar to that reported previously at Site 737 on the Northern Kerguelen Plateau and may correlate with other such occurrences of this age in the Atlantic and Indian Oceans. The base of the pelagic section is dated as earliest Oligocene by nannofossils and foraminifers (32.8-34.3 Ma; Subchron CP16a/b and basal AP13).

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Latitude: -50.185050 * Longitude: 63.936530

Date/Time Start: 1999-01-15T10:23:00 * Date/Time End: 1999-01-21T16:30:00

Minimum DEPTH, sediment/rock: 0.25 m * Maximum DEPTH, sediment/rock: 422.00 m

Event(s):

183-1139A * Latitude: -50.185050 * Longitude: 63.936530 * Date/Time Start: 1999-01-15T10:23:00 * Date/Time End: 1999-01-21T16:30:00 * Elevation: -1415.3 m * Penetration: 694.2 m * Recovery: 356.88 m * Location: Indian Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 73 cores; 694.2 m cored; 0 m drilled; 51.4 % recovery

Comment:

Sediment depth is given in mbsf. Abundance estimate as follows: V = very abundant, A = abundant, C = common, F = few, R = rare, T = trace, - = not found.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Epoch	Epoch		Persico, Davide
2	Nannofossil zone	Nannos zone		Persico, Davide
3	Sample code/label	Sample label		Persico, Davide
4	DEPTH, sediment/rock	Depth sed	m		Geocode
5	Nannofossil abundance	Nannos abund		Persico, Davide
6	Nannofossils preservation	Nannos preserv		Persico, Davide	G = good, M = moderate, P = poor
7	Bicolumnus ovatus	B. ovatus		Persico, Davide
8	Blackites spinosus	B. spinosus		Persico, Davide
9	Braarudosphaera bigelowii	B. bigelowii		Persico, Davide
10	Calcidiscus leptoporus	C. leptoporus		Persico, Davide
11	Calcidiscus macintyrei	C. macintyrei		Persico, Davide
12	Chiasmolithus altus	C. altus		Persico, Davide
13	Chiasmolithus cf. altus	C. cf. altus		Persico, Davide
14	Chiasmolithus oamaruensis	C. oamaruensis		Persico, Davide
15	Chiasmolithus spp.	Chiasmolithus spp.		Persico, Davide
16	Coccolithus eopelagicus	C. eopelagicus		Persico, Davide
17	Clausicoccus fenestratus	C. fenestratus		Persico, Davide
18	Coccolithus formosus	C. formosus		Persico, Davide
19	Coccolithus miopelagicus	C. miopelagicus		Persico, Davide
20	Coccolithus pelagicus	C. pelagicus		Persico, Davide
21	Coccolithus pelagicus	C. pelagicus		Persico, Davide	with bar
22	Coronocyclus nitescens	C. nitescens		Persico, Davide
23	Cyclicargolithus abisectus	C. abisectus		Persico, Davide
24	Cyclicargolithus floridanus	C. floridanus		Persico, Davide
25	Discoaster binodosus	D. binodosus		Persico, Davide
26	Discoaster deflandrei	D. deflandrei		Persico, Davide
27	Discoaster cf. deflandrei	D. cf. deflandrei		Persico, Davide
28	Discoaster spp.	Discoaster spp.		Persico, Davide	5 ray
29	Discoaster spp.	Discoaster spp.		Persico, Davide	6 ray
30	Discoaster tanii	D. tanii		Persico, Davide
31	Discoaster variabilis	D. variabilis		Persico, Davide	knob
32	Emiliania huxleyi	E. huxleyi		Persico, Davide
33	Gephyrocapsa caribbeanica	G. caribbeanica		Persico, Davide	<3.5 µm
34	Gephyrocapsa oceanica	G. oceanica		Persico, Davide
35	Gephyrocapsa sp.	Gephyrocapsa sp.		Persico, Davide	cf. G. sinuosa
36	Helicosphaera bramlettei	H. bramlettei		Persico, Davide
37	Helicosphaera carteri	H. carteri		Persico, Davide
38	Helicosphaera euphratis	H. euphratis		Persico, Davide
39	Helicosphaera granulata	H. granulata		Persico, Davide
40	Helicosphaera intermedia	H. intermedia		Persico, Davide
41	Helicosphaera obliqua	H. obliqua		Persico, Davide
42	Helicosphaera perch-nielseniae	H. perch-nielseniae		Persico, Davide
43	Helicosphaera recta	H. recta		Persico, Davide
44	Isthmolithus recurvus	I. recurvus		Persico, Davide
45	Markalius inversus	M. inversus		Persico, Davide
46	Pontosphaera callosa	P. callosa		Persico, Davide
47	Pontosphaera multipora	P. multipora		Persico, Davide
48	Pontosphaera plana	P. plana		Persico, Davide
49	Pontosphaera punctosa	P. punctosa		Persico, Davide
50	Pontosphaera versa	P. versa		Persico, Davide
51	Pseudoemiliania lacunosa	P. lacunosa		Persico, Davide
52	Reticulofenestra bisecta	R. bisecta		Persico, Davide
53	Reticulofenestra daviesii	R. daviesii		Persico, Davide
54	Reticulofenestra dictyoda	R. dictyoda		Persico, Davide
55	Reticulofenestra hillae	R. hillae		Persico, Davide
56	Reticulofenestra perplexa	R. perplexa		Persico, Davide
57	Reticulofenestra aff. reticulata	R. aff. reticulata		Persico, Davide
58	Reticulofenestra spp.	Reticulofenestra spp.		Persico, Davide	<3 µm
59	Reticulofenestra sp.	Reticulofenestra sp.		Persico, Davide	3-5 µm
60	Reticulofenestra sp.	Reticulofenestra sp.		Persico, Davide	cf. R. samodurovii
61	Reticulofenestra scrippsae	R. scrippsae		Persico, Davide
62	Reticulofenestra umbilicus	R. umbilicus		Persico, Davide
63	Rhabdosphaera tenuis	R. tenuis		Persico, Davide
64	Sphenolithus dissimilis	S. dissimilis		Persico, Davide
65	Sphenolithus moriformis	S. moriformis		Persico, Davide
66	Thoracosphaera saxea	T. saxea		Persico, Davide
67	Zygrhablithus bijugatus	Z. bijugatus		Persico, Davide

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

13063 data points

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