Citation:

epic.28238.d001

Name: (Table 1) Range chart of calcareous nannofossils in samples of sediment core CRP-3
Published: 2001
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Fossil specimens of the exclusively oceanic calcareous nannoplankton were found only in the upper 200 m of the Cape Roberts Project 3 (CRP-3) cores. These assemblages are depauperate and sporadic in occurrence. The majority of the assemblages contain fewer than 4 species, indicating a severe palaeoecological restriction. The clear domination of these assemblages by reticulofenestrid species, coupled with the almost total exclusion of Coccolithus pelagicus, indicates cold surface water conditions in the Victoria Land Basin during the lives of these poor algae. These cold surface water conditions, perhaps coupled with abnormal surface water chemistry, excluded almost all of the age-diagnostic species from the area. The occurrence of Transversopontis pulcheroides, however, suggests a biostratigraphic assignment of lower Oligocene for this part of the core. The CRP-3 assemblages occur within fine-grained clastic sedimentary rocks, but only those that are in close stratigraphical proximity with coarser-grained lithologies.

Project(s):

Cape Roberts Project (CRP)

Coverage:

Latitude: -77.006000 * Longitude: 163.719000

Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00

Minimum DEPTH, sediment/rock: 2.85 m * Maximum DEPTH, sediment/rock: 278.54 m

Event(s):

CRP-3 * Latitude: -77.006000 * Longitude: 163.719000 * Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00 * Elevation: -295.0 m * Penetration: 939 m * Recovery: 936 m * Location: Ross Sea * Campaign: * Basis: Sampling/drilling from ice * Method/Device: Core wireline system (CWS) * Comment: 11.76 km at 76° true from Cape Roberts, 2.04 km at 225° true from CRP-2. Fast ice thickness: 2.0 to 2.2 m. Sea rise embedded to 9.55 mbsf. Lateral ice movement from spudding 5.0 m to 82° true. HQ core to 345.85 mbsf. NQ core to 939.42 mbsf. Core recovery 97%. Phase 1 logging to 345 mbsf, Phase 2 logging to 773 mbsf, Phase 3 logging to 918 mbsf. Deepest Cenozoic lithology and depth: sandstone breccia from 822.87 to 823.11 mbsf. Age of oldest Cenozoic strata: earliest Oligocene or latest Eocene. Deepest core lithology and depth: light red-brown quartz-cemented quartz sandstone to 939.42 mbsf. Age of bedrock: (mid?) Devonian.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Nannofossil abundance	Nannos abund		Watkins, David K	Abundance estimate	Very rare = 1-2 specimens, rare = 3-10 specimens, few = 10-100 specimens per longitudinal traverse of the 40 mm smear slide
3	Nannofossils preservation	Nannos preserv		Watkins, David K		Poor = severely dissolved so that species identification is frequently impaired. Moderate = species identification only occasionally impaired by diagenesis
4	Braarudosphaera bigelowii	B. bigelowii	#	Watkins, David K	Counting
5	Chiasmolithus altus	C. altus	#	Watkins, David K	Counting
6	Chiasmolithus oamaruensis	C. oamaruensis	#	Watkins, David K	Counting
7	Coccolithus pelagicus	C. pelagicus	#	Watkins, David K	Counting
8	Dictyococcites bisectus	D. bisectus	#	Watkins, David K	Counting
9	Dictyococcites daviesii	D. daviesii	#	Watkins, David K	Counting
10	Dictyococcites hesslandii	D. hesslandii	#	Watkins, David K	Counting
11	Dictyococcites productus	D. productus	#	Watkins, David K	Counting
12	Dictyococcites scrippsae	D. scrippsae	#	Watkins, David K	Counting
13	Reticulofenestra hampdenensis	R. hampdenensis	#	Watkins, David K	Counting
14	Thoracosphaera sp. cf. T. heimii	Thoracosphaera sp. cf. T. heimii	#	Watkins, David K	Counting
15	Thoracosphaera sp. cf. T. saxea	Thoracosphaera sp. cf. T. saxea	#	Watkins, David K	Counting
16	Transversopontis pulcheroides	T. pulcheroides	#	Watkins, David K	Counting
17	Coccosphaera pachyderma	C. pachyderma	#	Watkins, David K	Counting
18	Specimen count	Sp count	#	Watkins, David K	Counting
19	Number of species	Spec No	#	Watkins, David K	Counting

License:

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

Size:

2147 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Nannos abund	3 Nannos preserv	4 B. bigelowii [#]	5 C. altus [#]	6 C. oamaruensis [#]	7 C. pelagicus [#]	8 D. bisectus [#]	9 D. daviesii [#]	10 D. hesslandii [#]	11 D. productus [#]	12 D. scrippsae [#]	13 R. hampdenensis [#]	14 Thoracosphaera sp. cf. T. heimii [#]	15 Thoracosphaera sp. cf. T. saxea [#]	16 T. pulcheroides [#]	17 C. pachyderma [#]	18 Sp count [#]	19 Spec No [#]
2.85	very rare	moderate	0	0	0	0	0	1	0	1	0	0	0	0	0	0	2	2
5.01	very rare	moderate	0	0	0	0	0	8	0	1	0	3	0	0	0	0	12	3
6.87	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
15.99	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
17.82	very rare	moderate	0	0	0	0	0	3	0	0	0	0	0	0	0	0	3	1
18.02	very rare	good	0	0	0	0	0	2	0	0	0	0	0	0	0	0	2	1
18.19	very rare	moderate	0	0	0	0	0	2	0	0	0	0	0	0	0	0	2	1
19.10	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
19.62	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	1	2	2
22.12	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
22.26	very rare	poor	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0
22.75	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
23.34	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
24.20	very rare	poor	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
25.08	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
26.72	very rare	moderate	0	0	0	0	0	2	0	0	0	0	0	0	0	0	2	1
28.44	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
28.70	very rare	moderate	0	0	0	0	0	3	0	0	0	0	0	0	0	0	3	1
30.50	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
32.20	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
32.51	very rare	moderate	0	0	0	0	0	3	0	0	0	0	0	0	0	0	3	1
33.21	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
35.70	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
36.61	very rare	poor	0	0	0	0	0	0	0	0	0	0	1	0	0	0	1	1
37.29	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
39.35	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
40.63	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
41.00	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
41.75	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
43.09	very rare	moderate	0	0	0	0	0	2	0	0	0	0	0	0	0	0	2	1
43.72	very rare	moderate	0	0	0	0	0	4	0	0	0	0	0	0	0	0	4	1
44.18	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
44.50	very rare	moderate	0	0	0	0	0	1	0	0	0	0	1	1	0	0	3	3
44.98	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
45.63	very rare	poor	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
46.04	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
46.42	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
47.60	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
77.11	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
77.45	very rare	moderate	0	0	0	0	0	1	0	0	0	1	0	0	0	0	2	2
77.80	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
80.19	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
80.33	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
81.98	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
82.34	very rare	poor	0	0	0	0	0	2	0	2	0	0	0	0	0	0	2	1
83.04	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
88.18	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
88.46	very rare	moderate	0	0	0	0	0	1	0	0	0	1	0	0	0	0	2	2
89.25	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
90.24	very rare	moderate	0	0	0	0	0	1	0	0	0	1	0	0	0	0	2	2
90.86	very rare	moderate	0	0	0	0	0	2	0	0	0	0	0	0	0	0	2	1
91.91	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
92.94	very rare	moderate	0	0	0	0	0	2	0	0	0	1	0	0	0	0	3	2
93.52	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
94.72	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	1	0	2	2
96.06	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
98.13	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
100.07	few	moderate	0	0	0	0	6	21	0	8	3	11	0	0	0	0	49	5
100.75	rare	good	0	0	0	1	0	5	0	1	0	3	0	0	0	0	10	4
101.03	few	good	0	0	0	0	0	11	0	0	0	1	0	0	0	0	12	2
104.62	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
106.07	few	good	0	0	0	0	2	28	0	9	0	17	0	0	0	0	56	4
107.37	very rare	poor	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
107.58	few	moderate	0	0	0	0	0	14	0	1	0	2	0	0	0	0	17	3
108.16	few	moderate	0	0	0	0	0	15	0	2	0	0	0	0	0	2	19	3
110.98	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
112.21	few	moderate	0	0	0	0	0	8	0	0	0	4	0	0	0	0	12	2
112.77	very rare	poor	0	0	0	0	0	0	0	0	0	0	1	0	0	0	1	1
114.31	few	good	0	0	0	0	5	60	0	10	3	20	0	0	1	0	99	6
114.89	few	good	0	1	0	0	0	311	1	27	3	6	0	0	3	1	353	8
117.07	very rare	moderate	0	0	0	0	0	1	0	0	0	1	0	0	0	0	2	2
118.84	very rare	moderate	0	0	0	0	0	2	0	0	0	1	0	0	0	0	3	2
119.60	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
119.93	very rare	moderate	0	0	0	0	0	8	0	0	0	3	0	0	0	0	11	2
120.33	very rare	moderate	0	0	0	0	0	2	0	2	0	0	0	0	0	0	4	2
120.56	rare	poor	0	0	0	0	0	4	0	1	0	3	0	0	0	0	8	3
120.97	rare	good	0	0	0	0	2	10	0	1	1	4	0	0	0	0	18	5
121.07	very rare	good	0	0	0	0	0	5	0	0	0	0	0	0	0	0	5	1
121.36	few	good	0	0	0	0	4	36	0	5	3	15	0	0	2	1	66	7
121.36	few	good	0	0	0	0	0	11	0	0	1	1	0	0	0	0	13	3
121.98	very rare	moderate	0	0	0	0	0	6	0	0	1	0	0	0	0	0	7	2
122.81	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
123.33	very rare	moderate	0	0	0	0	0	3	0	3	0	0	0	0	0	0	6	2
123.78	few	good	0	0	0	0	1	23	0	2	0	7	0	0	0	0	33	4
124.84	very rare	moderate	0	0	0	0	0	8	0	0	0	0	0	0	0	0	8	1
125.83	very rare	moderate	0	0	0	0	0	2	0	0	0	1	0	0	0	0	3	2
127.58	rare	moderate	0	0	0	0	0	6	0	1	0	2	0	0	0	0	9	3
128.91	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
130.20	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
131.00	very rare	moderate	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1
132.26	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
140.66	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
141.32	very rare	moderate	0	0	0	0	0	3	0	0	0	0	0	0	0	0	3	1
142.41	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
142.93	very rare	moderate	0	0	0	0	0	0	0	0	0	1	0	0	0	0	1	1
144.61	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
155.87	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
157.70	very rare	moderate	0	0	0	0	0	6	0	0	0	0	0	0	0	0	6	1
157.75	rare	moderate	0	0	0	0	0	5	0	1	2	2	0	0	0	0	10	4
159.05	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
160.19	very rare	moderate	0	0	0	0	0	4	0	1	0	3	0	0	0	0	8	3
160.36	very rare	moderate	0	0	0	0	0	4	0	0	0	0	0	0	0	0	4	1
160.87	very rare	moderate	0	0	0	0	0	2	0	1	0	0	0	0	1	0	4	3
161.48	very rare	moderate	0	0	0	0	0	3	0	0	0	2	0	0	0	0	5	2
162.10	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
177.35	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
178.01	very rare	moderate	0	0	0	0	0	2	0	0	0	0	0	0	0	0	2	1
179.13	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
183.95	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
185.25	very rare	moderate	0	0	1	0	0	1	0	1	0	0	0	0	0	0	3	3
185.79	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
186.85	rare	moderate	0	0	0	0	0	7	0	1	1	1	0	0	0	0	10	4
187.89	very rare	moderate	0	0	0	0	0	5	0	0	0	0	0	0	0	0	5	1
188.61	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
190.18	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
191.30	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
191.93	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
193.14	very rare	moderate	0	0	0	0	0	2	0	2	0	2	0	0	0	0	6	3
194.41	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
257.16	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
266.27	very rare	moderate	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1
278.54	barren		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0