Citation:

dsdp.proc.95.110.1987

Name: (Table 1) Abundance of selected radiolarian species in the upper Paleogene section of DSDP Hole 95-612
Creator: Amanda A Palmer
Published: 1987
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

A major objective of DSDP Leg 95 (New Jersey Transect) was to investigate the effects of eustatic sea-level fluctuation and crustal subsidence on the depositional and erosional patterns of the Atlantic continental margin in the Baltimore Canyon trough area. Deep Sea Drilling Project Sites 612 and 613 were drilled on the New Jersey continental slope and rise during this leg.

A more specific goal of Leg 95 was to investigate calcareous and siliceous microfossil biostratigraphy in order to identify biostratigraphic gaps and to intercorrelate the various microfossil zonations for the New Jersey margin. This study of radiolarians from Sites 612 and 613, and from Atlantic Slope Project (ASP) Site ASP 15, demonstrates that although radiolarians occur throughout the Cenozoic section in this region, they are most useful for biostratigraphic control in the upper Paleogene part of the stratigraphic record. Results of this investigation indicate that several biostratigraphic gaps occur in the Cenozoic sedimentary sequence penetrated by the three drill holes.

Upper Paleogene radiolarians are well preserved, abundant, and diverse. Although some tropical taxa are rare or absent, sufficient age-diagnostic species are present for biostratigraphic determinations. In comparison, lower Paleogene radiolarians are poorly preserved because pronounced silica diagenesis formed porcellanites in some stratigraphic intervals. The Neogene radiolarians faunas are rare and moderately well preserved at all the sites investigated here. Neogene assemblages are dominated by spongodiscids and porodiscids (similar to faunas of modern cold/temperate shelf waters), and contain few taxa useful for biostratigraphic determinations.

Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Latitude: 38.820200 * Longitude: -72.773800

Date/Time Start: 1983-08-26T00:00:00 * Date/Time End: 1983-08-26T00:00:00

Minimum DEPTH, sediment/rock: 136.10 m * Maximum DEPTH, sediment/rock: 322.61 m

Event(s):

95-612 * Latitude: 38.820200 * Longitude: -72.773800 * Date/Time: 1983-08-26T00:00:00 * Elevation: -1386.0 m * Penetration: 675.3 m * Recovery: 579.7 m * Location: North Atlantic/SLOPE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 72 cores; 674.7 m cored; 0 m drilled; 85.9 % recovery

Comment:

Species abundance: C = common (> 10% of all radiolarians on a slide); F = frequent (1-10%); R = rare (0.1-1%); r = very rare (0.01-0.1%).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Palmer, Amanda A	DSDP/ODP/IODP sample designation
2	DEPTH, sediment/rock	Depth sed	m			Geocode
3	Lithapium plegmacantha	L. plegmacantha		Palmer, Amanda A
4	Phormocyrtis striata striata	P. striata striata		Palmer, Amanda A
5	Theocotylissa ficus	T. ficus		Palmer, Amanda A
6	Ceratospyris articulata	C. articulata		Palmer, Amanda A
7	Lithocyclia ocellus	L. ocellus		Palmer, Amanda A
8	Periphaena decora	P. decora		Palmer, Amanda A
9	Spongatractus balbis	S. balbis		Palmer, Amanda A
10	Spongatractus pachystylus	S. pachystylus		Palmer, Amanda A
11	Theocotyle conica	T. conica		Palmer, Amanda A
12	Podocyrtis dorus	P. dorus		Palmer, Amanda A
13	Podocyrtis diamesa	P. diamesa		Palmer, Amanda A
14	Dictyophimus craticula	D. craticula		Palmer, Amanda A
15	Eusyringium lagena	E. lagena		Palmer, Amanda A
16	Lophocyrtis biaurita	L. biaurita		Palmer, Amanda A
17	Periphaena tripyramis tripyramis	P. tripyramis tripyramis		Palmer, Amanda A
18	Periphaena tripyramis triangula	P. tripyramis triangula		Palmer, Amanda A
19	Podocyrtis sinuosa	P. sinuosa		Palmer, Amanda A
20	Dictyoprora mongolfieri	D. mongolfieri		Palmer, Amanda A
21	Podocyrtis ampla	P. ampla		Palmer, Amanda A
22	Theocorys anapographa	T. anapographa		Palmer, Amanda A
23	Theocorys sp.	Theocorys sp.		Palmer, Amanda A		aff. T anapographa
24	Thyrsocyrtis hirsuta	T. hirsuta		Palmer, Amanda A
25	Dictyoprora urceolus	D. urceolus		Palmer, Amanda A
26	Dictyoprora amphora	D. amphora		Palmer, Amanda A
27	Dictyoprora sp.	Dictyoprora sp.		Palmer, Amanda A		cf. D. amphora
28	Thyrsocyrtis triacantha	T. triacantha		Palmer, Amanda A
29	Lithochytris vespertilio	L. vespertilio		Palmer, Amanda A
30	Lamptonium obelix	L. obelix		Palmer, Amanda A
31	Thyrsocyrtis tensa	T. tensa		Palmer, Amanda A
32	Thyrsocyrtis rhizodon	T. rhizodon		Palmer, Amanda A
33	Lithapium anoectum	L. anoectum		Palmer, Amanda A
34	Eusyringium fistuligerum	E. fistuligerum		Palmer, Amanda A
35	Podocyrtis fasciolata	P. fasciolata		Palmer, Amanda A
36	Lithapium mitra	L. mitra		Palmer, Amanda A
37	Calocyclas hispida	C. hispida		Palmer, Amanda A
38	Podocyrtis mitra	P. mitra		Palmer, Amanda A
39	Podocyrtis chalara	P. chalara		Palmer, Amanda A
40	Theocyrtis sp.	Theocyrtis sp.		Palmer, Amanda A		cf. T. tuberosa
41	Theocyrtis tuberosa	T. tuberosa		Palmer, Amanda A
42	Thyrsocyrtis tetracantha	T. tetracantha		Palmer, Amanda A
43	Lithocyclia aristotelis	L. aristotelis		Palmer, Amanda A
44	Cryptoprora ornata	C. ornata		Palmer, Amanda A
45	Dictyoprora armadillo	D. armadillo		Palmer, Amanda A
46	Lychnocanium amphitrite	L. amphitrite		Palmer, Amanda A
47	Lophocyrtis jacchia	L. jacchia		Palmer, Amanda A
48	Cyclampterium longiventer	C. longiventer		Palmer, Amanda A
49	Artophormis barbadensis	A. barbadensis		Palmer, Amanda A
50	Dictyoprora pirum	D. pirum		Palmer, Amanda A
51	Tristylospyris triceros	T. triceros		Palmer, Amanda A
52	Dictyoprora ovata	D. ovata		Palmer, Amanda A
53	Thyrsocyrtis bromia	T. bromia		Palmer, Amanda A
54	Carpocanistrum azyx	C. azyx		Palmer, Amanda A
55	Calocyclas turris	C. turris		Palmer, Amanda A
56	Lithocyclia angusta	L. angusta		Palmer, Amanda A
57	Artophormis gracilis	A. gracilis		Palmer, Amanda A
58	Radiolarian zone	Radiolarian zone		Palmer, Amanda A

License:

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

Size:

4275 data points

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