Citation:

PANGAEA.933139

Name: Silicic acid utilisation from IODP Site 323-U1343
Published: 2021-06-28
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Bering Sea; Diatom; Mid Pleistocene Transition; MPT; Sea ice; Silicon isotopes; δ30Si

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Keyword(s):

Bering Sea; Diatom; Mid Pleistocene Transition; MPT; Sea ice; Silicon isotopes; δ30Si

Related to:

Worne, Savannah; Swann, George E A; Kender, Sev; Lacey, Jack H; Leng, Melanie J (submitted): Increased efficiency of the Bering Sea biological pump during the Mid-Pleistocene Transition. Paleoceanography and Paleoclimatology

Coverage:

Latitude: 57.556650 * Longitude: -175.816090

Date/Time Start: 2009-08-07T00:00:00 * Date/Time End: 2009-08-13T00:00:00

Minimum Elevation: -1952.0 m * Maximum Elevation: -1952.0 m

Event(s):

323-U1343 * Latitude: 57.556650 * Longitude: -175.816090 * Date/Time Start: 2009-08-07T00:00:00 * Date/Time End: 2009-08-13T00:00:00 * Elevation: -1952.0 m * Location: Bering Sea * Campaign: (Bering Sea Paleoceanography) * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 135 cores; 1224.0 m cored, 96.5 % recovered;

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	AGE	Age	ka BP	Worne, Savannah		Geocode
2	Size fraction	Size fraction		Worne, Savannah
3	δ30Si, silicic acid	δ30Si Si(OH)4	‰	Worne, Savannah	Mass spectrometer, Thermo Finnigan, MAT 253	large [20-38 µm]
4	Silicic acid utilisation, δ30Si(OH)4	δ30Si(OH)4 utilisation	%	Worne, Savannah	derived from δ30Si	[δ30Si(OH)4 = 1.63]
5	Silicic acid utilisation, δ30Si(OH)4	δ30Si(OH)4 utilisation	%	Worne, Savannah	derived from δ30Si	% relative to 0.605 Ma
6	Thalassiosira antarctica var. borealis, resting and vegetative spores	T. antarctica var. borealis rs vs	%	Worne, Savannah	Calculated
7	Diatoms, other	Diatom oth	%	Worne, Savannah	Calculated	All other diatom species
8	Isotopic fractionation	ε	‰	Worne, Savannah		Fractionation factor
9	Silicic acid utilisation, δ30Si(OH)4	δ30Si(OH)4 utilisation	%	Worne, Savannah	derived from δ30Si	[δ30Si(OH)4 = 1.23]
10	Silicic acid utilisation, δ30Si(OH)4	δ30Si(OH)4 utilisation	%	Worne, Savannah	derived from δ30Si	[δ30Si(OH)4 = 1.63]
11	Thalassiosira antarctica var. borealis, resting and vegetative spores	T. antarctica var. borealis rs vs	%	Worne, Savannah	Calculated
12	Chaetoceros spp., resting and vegetative spores	Chaetoceros spp. rs vs	%	Worne, Savannah	Calculated
13	Diatoms, other	Diatom oth	%	Worne, Savannah	Calculated	All other diatom species
14	Isotopic fractionation	ε	‰	Worne, Savannah		Fractionation factor
15	Silicic acid utilisation, δ30Si(OH)4	δ30Si(OH)4 utilisation	%	Worne, Savannah	derived from δ30Si	[δ?30Si(OH)4 = 1.23]
16	Silicic acid utilisation, δ30Si(OH)4	δ30Si(OH)4 utilisation	%	Worne, Savannah	derived from δ30Si	[δ30Si(OH)4 = 1.63]

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

840 data points

Data

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

1 Age [ka BP]	2 Size fraction	3 δ30Si Si(OH)4 [‰] (large [20-38 µm], Mass spectr...)	4 δ30Si(OH)4 utilisation [%] ([δ30Si(OH)4 = 1.63], derived ...)	5 δ30Si(OH)4 utilisation [%] (% relative to 0.605 Ma, deriv...)	6 T. antarctica var. borealis rs vs [%] (Calculated)	7 Diatom oth [%] (All other diatom species, Cal...)	8 ε [‰] (Fractionation factor)	9 δ30Si(OH)4 utilisation [%] ([δ30Si(OH)4 = 1.23], derived ...)	10 δ30Si(OH)4 utilisation [%] ([δ30Si(OH)4 = 1.63], derived ...)	11 T. antarctica var. borealis rs vs [%] (Calculated)	12 Chaetoceros spp. rs vs [%] (Calculated)	13 Diatom oth [%] (All other diatom species, Cal...)	14 ε [‰] (Fractionation factor)	15 δ30Si(OH)4 utilisation [%] ([δ?30Si(OH)4 = 1.23], derived...)	16 δ30Si(OH)4 utilisation [%] ([δ30Si(OH)4 = 1.63], derived ...)
605.38	>38 µm	1.18	95.23	58.86	0.06	0.94	-1.08	95.14	58.09	0.26	0.16	0.58	-1.16	95.49	61.14
701.28	>38 µm	0.69	50.45	14.09	0.24	0.76	-1.01	46.20	6.72	0.20	0.07	0.72	-1.10	50.46	14.11
755.82	>38 µm	1.26	102.95	66.59	0.13	0.87	-1.05	103.09	65.10	0.50	0.33	0.17	-1.24	102.61	70.44
780.41	>38 µm	1.32	108.32	71.95	0.46	0.54	-0.94	109.78	67.04	0.28	0.18	0.54	-1.18	107.78	73.76
813.21	>38 µm	1.73	145.68	109.32	0.15	0.85	-1.05	148.07	109.80	0.22	0.38	0.39	-1.40	135.97	107.34
830.22	>38 µm	1.36	112.05	75.68	0.90	0.10	-0.77	117.10	65.47	0.70	0.38	-0.08	-1.23	110.77	78.25
842.30	>38 µm	1.23	100.09	63.73	0.19	0.81	-1.03	100.10	61.39	0.20	0.17	0.62	-1.20	100.08	66.72
849.79	>38 µm	0.72	53.32	16.95	0.73	0.27	-0.84	38.56	-9.31	0.45	0.39	0.15	-1.32	61.23	31.02
858.97	>38 µm	1.23	99.82	63.45	0.19	0.81	-1.03	99.81	61.08	0.10	0.25	0.65	-1.31	99.85	69.28
904.57	>38 µm	0.58	41.14	4.77	0.05	0.95	-1.08	40.13	3.14	0.31	0.26	0.43	-1.24	47.97	15.83
927.70	>38 µm	1.46	120.86	84.50	0.02	0.98	-1.09	120.98	84.41	0.10	0.39	0.51	-1.45	115.78	88.28
934.77	>38 µm	1.45	120.32	83.95	0.32	0.68	-0.99	122.69	82.08	0.11	0.14	0.75	-1.20	118.60	85.32
942.07	>38 µm	1.41	116.05	79.68	0.34	0.66	-0.98	118.05	77.14	0.39	0.32	0.29	-1.28	113.80	82.53
949.43	>38 µm	1.47	122.23	85.86	0.28	0.72	-1.00	124.50	84.42	0.06	0.07	0.87	-1.15	121.24	86.49
968.95	>38 µm	1.50	124.50	88.14	0.06	0.94	-1.08	125.00	87.90	0.23	0.55	0.22	-1.57	117.20	91.67
992.57	>38 µm	1.38	113.41	77.05	0.13	0.87	-1.05	113.99	76.05	0.17	0.10	0.73	-1.14	112.89	77.93
1015.43	>38 µm	1.50	124.50	88.14	0.19	0.81	-1.03	126.15	87.34	0.22	0.12	0.67	-1.14	123.72	88.52
1039.59	>38 µm	1.21	98.41	62.05	0.06	0.94	-1.08	98.38	61.33	0.15	0.09	0.76	-1.13	98.45	63.11
1061.05	>38 µm	1.52	126.23	89.86	0.06	0.94	-1.08	126.77	89.65	0.18	0.10	0.72	-1.13	125.48	90.15
1072.36	>38 µm	1.09	86.86	50.50	0.26	0.74	-1.01	85.66	45.96	0.23	0.19	0.58	-1.20	87.99	54.75
1087.25	>38 µm	1.36	112.09	75.73	0.04	0.96	-1.08	112.26	75.38	0.25	0.23	0.52	-1.23	110.77	78.37
1100.89	>38 µm	1.23	99.59	63.23	0.20	0.80	-1.03	99.56	60.64	0.18	0.15	0.67	-1.18	99.62	65.64
1105.16	>38 µm	1.13	90.68	54.32	0.15	0.85	-1.05	90.20	51.97	0.23	0.42	0.35	-1.44	92.87	65.05
1142.54	>38 µm	1.26	102.82	66.45	0.12	0.88	-1.06	102.93	65.14	0.31	0.07	0.62	-1.05	102.94	64.97
1156.69	>38 µm	1.39	114.55	78.18	0.20	0.80	-1.03	115.57	76.65	0.27	0.12	0.61	-1.12	114.28	78.58
1169.77	>38 µm	1.17	94.55	58.18	0.23	0.77	-1.02	94.10	54.78	0.13	0.23	0.64	-1.28	95.30	64.00
1190.67	>38 µm	0.81	61.36	25.00	0.17	0.83	-1.04	59.11	20.62	0.18	0.30	0.52	-1.34	68.18	38.24
605.38	20-38 µm	1.40	115.77	79.41	0.76	0.24	-0.83	120.98	72.61	0.26	0.16	0.58	-1.16	114.90	80.55
701.28	20-38 µm	1.17	94.27	57.91	0.83	0.17	-0.80	92.12	42.11	0.20	0.07	0.72	-1.10	94.27	57.92
755.82	20-38 µm	1.32	108.32	71.95	0.12	0.88	-1.06	108.67	70.78	0.50	0.33	0.17	-1.24	107.36	75.18
780.41	20-38 µm	1.35	111.23	74.86	0.83	0.17	-0.80	115.44	65.44	0.28	0.18	0.54	-1.18	110.50	76.48
813.21	20-38 µm	1.70	143.05	106.68	0.50	0.50	-0.92	151.51	108.00	0.22	0.38	0.39	-1.40	133.89	105.26
830.22	20-38 µm	1.49	123.45	87.09	0.80	0.20	-0.81	131.83	82.48	0.70	0.38	-0.08	-1.23	120.97	88.46
842.30	20-38 µm	1.25	101.73	65.36	0.49	0.51	-0.92	102.06	58.72	0.20	0.17	0.62	-1.20	101.58	68.22
849.79	20-38 µm	1.24	100.86	64.50	0.81	0.19	-0.81	101.18	51.68	0.45	0.39	0.15	-1.32	100.72	70.51
858.97	20-38 µm	1.28	104.36	68.00	0.40	0.60	-0.96	105.01	63.23	0.10	0.25	0.65	-1.31	103.67	73.10
891.87	20-38 µm	1.14	92.14	55.77	0.70	0.30	-0.85	89.79	42.59	0.25	0.11	0.64	-1.11	92.23	56.30
904.57	20-38 µm	1.13	90.50	54.14	0.83	0.17	-0.80	86.95	36.99	0.31	0.26	0.43	-1.24	91.60	59.46
927.70	20-38 µm	1.51	125.14	88.77	0.22	0.78	-1.02	127.08	87.91	0.10	0.39	0.51	-1.45	119.01	91.51
934.77	20-38 µm	1.55	129.14	92.77	0.51	0.49	-0.92	134.93	91.34	0.11	0.14	0.75	-1.20	126.67	93.39
942.07	20-38 µm	1.31	106.95	70.59	0.51	0.49	-0.92	108.34	64.74	0.39	0.32	0.29	-1.28	105.98	74.71
949.43	20-38 µm	1.56	129.68	93.32	0.82	0.18	-0.81	140.48	90.89	0.06	0.07	0.87	-1.15	128.36	93.62
968.95	20-38 µm	1.48	122.32	85.95	0.30	0.70	-0.99	124.76	84.42	0.23	0.55	0.22	-1.57	115.67	90.14
992.57	20-38 µm	1.42	117.05	80.68	0.37	0.63	-0.97	119.38	78.03	0.17	0.10	0.73	-1.14	116.39	81.42
1004.96	20-38 µm	1.48	122.91	86.55	0.38	0.63	-0.97	126.11	84.66	0.19	0.13	0.68	-1.16	121.74	87.23
1015.43	20-38 µm	1.45	120.14	83.77	0.46	0.54	-0.93	123.74	80.87	0.22	0.12	0.67	-1.14	119.49	84.29
1039.59	20-38 µm	1.22	98.95	62.59	0.13	0.87	-1.05	98.91	60.97	0.15	0.09	0.76	-1.13	98.98	63.64
1061.05	20-38 µm	1.40	115.32	78.95	0.28	0.72	-1.00	116.86	76.83	0.18	0.10	0.72	-1.13	114.88	79.55
1072.36	20-38 µm	1.33	108.77	72.41	0.61	0.39	-0.88	110.98	65.47	0.23	0.19	0.58	-1.20	108.02	74.78
1087.25	20-38 µm	1.44	118.82	82.45	0.36	0.64	-0.97	121.37	80.08	0.25	0.23	0.52	-1.23	116.77	84.37
1100.89	20-38 µm	1.32	107.77	71.41	0.11	0.89	-1.06	108.07	70.32	0.18	0.15	0.67	-1.18	107.26	73.28
1105.16	20-38 µm	1.12	89.68	53.32	0.67	0.33	-0.86	86.77	40.14	0.23	0.42	0.35	-1.44	92.11	64.28
1142.54	20-38 µm	1.24	101.00	64.64	0.66	0.34	-0.86	101.28	54.87	0.31	0.07	0.62	-1.05	101.04	63.07
1156.69	20-38 µm	1.39	114.73	78.36	0.33	0.67	-0.98	116.53	75.72	0.27	0.12	0.61	-1.12	114.46	78.75
1169.77	20-38 µm	1.35	110.73	74.36	0.52	0.48	-0.91	112.95	69.05	0.13	0.23	0.64	-1.28	109.23	77.93
1190.67	20-38 µm	1.32	107.73	71.36	0.17	0.83	-1.04	108.19	69.65	0.18	0.30	0.52	-1.34	106.36	76.42