Citation:

BF00013451

Name: (Table 2, page 50) Toolik lake sediment chemistry (0-1 cm interval)
Published: 1992
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The sediments within Toolik Lake in arctic Alaska are characterized by extremely low rates of organic matter sedimentation and unusually high concentrations of iron and manganese. Pore water and solid phase measurements of iron, manganese, trace metals, carbon, nitrogen, phosphorus, and sulfur are consistent with the hypothesis that the reduction of organic matter by iron and manganese is the most important biogeochemical reaction within the sediment. Very low rates of dissolved oxygen consumption by the sediments result in an oxidizing environment at the sediment-water interface. This results in high retention of upwardly-diffusing iron and manganese and the formation of metal-enriched sediment. Phosphate in sediment pore waters is strongly adsorbed by the metal-enriched phases. Consequently, fluxes of phosphorus from the sediments to overlying waters are very small and contribute to the oligotrophic nature of the Toolik Lake aquatic system. Toolik Lake contains an unusual type of lacustrine sediment, and in many ways the sediments are similar to those found in oligotrophic oceanic environments.

Source:

Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT (for Mn deposits information)

Further details:

Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN (for Mn deposits information)

Project(s):

NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)

Coverage:

Median Latitude: 68.631985 * Median Longitude: -149.607120 * South-bound Latitude: 68.627880 * West-bound Longitude: -149.621380 * North-bound Latitude: 68.639990 * East-bound Longitude: -149.592200

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.005 m

Event(s):

TCK-A * Latitude: 68.629880 * Longitude: -149.621380 * Elevation: 720.0 m * Location: Toolik Lake, Alaska * Method/Device: Core (CORE)

TCK-B * Latitude: 68.629760 * Longitude: -149.620300 * Elevation: 720.0 m * Location: Toolik Lake, Alaska * Method/Device: Core (CORE)

TCK-C * Latitude: 68.629600 * Longitude: -149.619260 * Elevation: 720.0 m * Lake water depth: 8 m * Location: Toolik Lake, Alaska * Method/Device: Core (CORE)

Comment:

Sediments were collected in 1977-1980 and 1983.

From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Cornwell, Jeffrey C
2	Latitude of event	Latitude		Cornwell, Jeffrey C
3	Longitude of event	Longitude		Cornwell, Jeffrey C
4	Depth, bathymetric	Bathy depth	m	Cornwell, Jeffrey C
5	DEPTH, sediment/rock	Depth sed	m	Cornwell, Jeffrey C		Geocode
6	Depth, top/min	Depth top	m	Cornwell, Jeffrey C
7	Depth, bottom/max	Depth bot	m	Cornwell, Jeffrey C
8	Aluminium	Al	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
9	Calcium	Ca	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
10	Magnesium	Mg	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
11	Potassium	K	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
12	Carbon, organic, total	TOC	mg/kg	Cornwell, Jeffrey C	Element analyser CHN
13	Carbon in carbonate	C (carb)	mg/kg	Cornwell, Jeffrey C	Gas chromatography
14	Nitrogen, total	TN	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
15	Phosphorus	P	mg/kg	Cornwell, Jeffrey C	Colorimetric
16	Biogenic silica	bSiO2	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
17	Manganese	Mn	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
18	Iron	Fe	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
19	Barium	Ba	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
20	Zinc	Zn	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
21	Nickel	Ni	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
22	Cobalt	Co	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
23	Copper	Cu	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
24	Chromium	Cr	mg/kg	Cornwell, Jeffrey C	Atomic absorption spectrometry (AAS)
25	Description	Description		Cornwell, Jeffrey C

License:

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

Size:

243 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Bathy depth [m]	5 Depth sed [m]	7 Depth bot [m]	8 Al [mg/kg]	9 Ca [mg/kg]	10 Mg [mg/kg]	11 K [mg/kg]	12 TOC [mg/kg]	13 C (carb) [mg/kg]	14 TN [mg/kg]	15 P [mg/kg]	16 bSiO2 [mg/kg]	17 Mn [mg/kg]	18 Fe [mg/kg]	19 Ba [mg/kg]	20 Zn [mg/kg]	21 Ni [mg/kg]	22 Co [mg/kg]	23 Cu [mg/kg]	24 Cr [mg/kg]	25 Description
TCK-A	68.6299	-149.6214	3.5	0.005	0.01	49000	6290	4350	10900	73800	2500	8700	1780	121500	3800	51000	320	270	72	20	32	60
TCK-B	68.6298	-149.6203	5.5	0.005	0.01	30000	5210	2720	6800	62500	3500	6900	6000	227500	11500	183000	850	160	61	26	27	40
TCK-C	68.6296	-149.6193	8.0	0.005	0.01	45000	4440	3930	9800	49000	4100	6200	1790	184100	48000	69000	680	230	82	26	35	42	Top Mn rich sediment
TCK-D	68.6295	-149.6184	13.0	0.005	0.01	58000	5900	4990	12600	58700	4000	6800	2340	39300	23000	97000	440	290	112	36	50	54
TCK-E	68.6294	-149.6174	18.0	0.005	0.01	46000	7040	4180	9800	55000	5600	6500	1720	53100	129000	79000	2600	300	126	29	49	56	Top Mn rich sediment with Mn concretions or nodules
TCK-F	68.6279	-149.6023	5.5	0.005	0.01	47000	4960	4200	11000	85900	1700	10400	1890	199100	500	24000	180	130	42	7	27	50
TCK-G	68.6298	-149.6010	6.0	0.005	0.01	32000	5910	2950	7400	72200	5100	7500	2260	119400	38000	142000	1330	160	64	52	23	50	Top Mn rich sediment
TCK-H	68.6316	-149.6004	10.0	0.005	0.01	61000	3740	5150	13400	63900	1700	7100	2240	111000	500	48000	220	190	45	12	40	48
TCK-I	68.6338	-149.5997	7.5	0.005	0.01	52000	5160	4370	11100	62000	3200	7800	1900	142700	13800	67000	450	240	92	24	40	42
TCK-J	68.6363	-149.5967	7.0	0.005	0.01	47000	4880	4080	10700	55100	3800	6600	1880	114300	27000	95000	720	280	116	40	41	48
TCK-K	68.6363	-149.5922	8.0	0.005	0.01	61000	5640	4910	12800	90600	2700	7200	2630	70700	1500	67000	240	190	48	20	42	71
TCK-L	68.6400	-149.5964	6.0	0.005	0.01	55000	4820	4410	11600	89900	2600	9800	2590	97300	1300	76000	220	250	55	18	42	26