Citation:

odp.proc.sr.111.148.1989

Name: Distribution of late Neogene age calcareous nannofossils in ODP Hole 111-677A (Table 2)
Creator: Simon D Houghton
Published: 1989
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The calcareous nannofossil assemblages recovered from Site 677A range in age from latest Miocene (NN11) to latest Pleistocene. The consistently high sediment-accumulation rate (mean of 48 m/m.y.) coupled with little dissolution of carbonate has ensured that generally rich, well-preserved coccolith assemblages occur at this site. Exceptions are the Pliocene/Pleistocene boundary sediments, which show evidence of dissolution, and upper Miocene basement sediments, which show evidence of diagenetic overgrowths.

The apparent paradox of the occurrence of large numbers of the cool-water species Coccolithus pelagicus together with subtropical and tropical nannofossil species is thought to represent increased seasonality in the degree of upwelling in the Panama Basin. Seasonal upwelling was particularly intense during the late Miocene, when common C. pelagicus occurred with Thalassionema diatoms. Populations of C. pelagicus probably bloomed during a winter period of upwelling that was associated with a shallow thermocline and depressed surface-water temperatures.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Latitude: 1.202300 * Longitude: -83.737000

Date/Time Start: 1986-09-30T09:45:00 * Date/Time End: 1986-10-03T15:15:00

Minimum Elevation: -3472.0 m * Maximum Elevation: -3472.0 m

Event(s):

111-677A * Latitude: 1.202300 * Longitude: -83.737000 * Date/Time Start: 1986-09-30T09:45:00 * Date/Time End: 1986-10-03T15:15:00 * Elevation: -3472.0 m * Penetration: 309.4 m * Recovery: 279.44 m * Location: North Pacific Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 34 cores; 309.4 m cored; 0 m drilled; 90.3 % recovery

Comment:

species abundance: A = abundant (>10 %), C = common (1.0-10 %), F = few (0.1-1.0 %) , R = rare (<0.1 %), - = not observed

Parameter(s):

#	Name	Short Name	Principal Investigator	Method/Device	Comment
1	Epoch	Epoch	Houghton, Simon D
2	Nannofossil zone	Nannos zone	Houghton, Simon D	Nannofossil Zone; Martini, 1971
3	Sample code/label	Sample label	Houghton, Simon D	DSDP/ODP/IODP sample designation
4	Nannofossil abundance	Nannos abund	Houghton, Simon D		A = abundant, C = common, F = few, R = rare
5	Nannofossils preservation	Nannos preserv	Houghton, Simon D		G = good, M = moderate, P = poor
6	Amaurolithus amplificus	A. amplificus	Houghton, Simon D
7	Amaurolithus delicatus	A. delicatus	Houghton, Simon D
8	Amaurolithus primus	A. primus	Houghton, Simon D
9	Amaurolithus tricorniculatus	A. tricorniculatus	Houghton, Simon D
10	Angulolithina arca	A. arca	Houghton, Simon D
11	Calcidiscus leptoporus	C. leptoporus	Houghton, Simon D
12	Calcidiscus macintyrei	C. macintyrei	Houghton, Simon D
13	Ceratolithus acutus	C. acutus	Houghton, Simon D
14	Ceratolithus cristatus	C. cristatus	Houghton, Simon D
15	Ceratolithus rugosus	C. rugosus	Houghton, Simon D
16	Ceratolithus telesmus	C. telesmus	Houghton, Simon D
17	Coccolithus pelagicus	C. pelagicus	Houghton, Simon D
18	Coccolithus streckeri	C. streckeri	Houghton, Simon D
19	Dictyococcites antarcticus	D. antarcticus	Houghton, Simon D
20	Dictyococcites productus	D. productus	Houghton, Simon D
21	Discoaster asymmetricus	D. asymmetricus	Houghton, Simon D
22	Discoaster berggrenii	D. berggrenii	Houghton, Simon D
23	Discoaster brouweri	D. brouweri	Houghton, Simon D
24	Discoaster intercalaris	D. intercalaris	Houghton, Simon D
25	Discoaster pentaradiatus	D. pentaradiatus	Houghton, Simon D
26	Discoaster pseudovariabilis	D. pseudovariabilis	Houghton, Simon D
27	Discoaster quinqueramus	D. quinqueramus	Houghton, Simon D
28	Discoaster surculus	D. surculus	Houghton, Simon D
29	Discoaster stellulus	D. stellulus	Houghton, Simon D
30	Discoaster tamalis	D. tamalis	Houghton, Simon D
31	Discoaster triradiatus	D. triradiatus	Houghton, Simon D
32	Discoaster variabilis	D. variabilis	Houghton, Simon D
33	Emiliania huxleyi	E. huxleyi	Houghton, Simon D
34	Gephyrocapsa oceanica	G. oceanica	Houghton, Simon D
35	Gephyrocapsa spp.	Gephyrocapsa spp.	Houghton, Simon D
36	Helicosphaera carteri	H. carteri	Houghton, Simon D
37	Helicosphaera neogranulata	H. neogranulata	Houghton, Simon D
38	Helicosphaera sellii	H. sellii	Houghton, Simon D
39	Neosphaera coccolithomorpha	N. coccolithomorpha	Houghton, Simon D
40	Pseudoemiliania lacunosa	P. lacunosa	Houghton, Simon D
41	Reticulofenestra minuta	R. minuta	Houghton, Simon D
42	Reticulofenestra minutula	R. minutula	Houghton, Simon D		Reticulofenestra minutula/R. haqii
43	Reticulofenestra pseudoumbilicus	R. pseudoumbilicus	Houghton, Simon D
44	Pontosphaera japonica	P. japonica	Houghton, Simon D
45	Pontosphaera discopora	P. discopora	Houghton, Simon D
46	Pontosphaera scutellum	P. scutellum	Houghton, Simon D
47	Rhabdosphaera clavigera	R. clavigera	Houghton, Simon D
48	Scyphosphaera globulata	S. globulata	Houghton, Simon D
49	Sphenaster metula	S. metula	Houghton, Simon D
50	Sphenolithus abies	S. abies	Houghton, Simon D
51	Sphenolithus neoabies	S. neoabies	Houghton, Simon D
52	Thoracosphaera spp.	Thoracosphaera spp.	Houghton, Simon D
53	Umbellosphaera spp.	Umbellosphaera spp.	Houghton, Simon D
54	Umbilicosphaera sibogae	U. sibogae	Houghton, Simon D

License:

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

Size:

2376 data points

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