Harriss, Robert C; Troup, Arthur G (1970): (Table 3, page 309) Mercury content of concretions from Grand Lake (GL) and Ship Harbour Lake (SH), Nova Scotia and Mosque Lake (ML), Ontario [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.855378, Supplement to: Harriss, RC; Troup, AG (1970): Chemistry and origin of freshwater ferromanganese concretions. Limnology and Oceanography, 15(5), 702-712, https://doi.org/10.4319/lo.1970.15.5.0702
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Abstract:
Ferromanganese concretions from Grand Lake and Ship Harbour Lake in Nova Scotia and Mosque Lake in Ontario are most common in water 0.5 to 2 m deep. X-ray diffraction studies show the ferromanganese portions of the concretions to he amorphous. Petrographic and electron probe studies of the ferromanganese material reveal chemical banding of iron and manganese. Bulk chemical analyses indicate that the Fe:Mn ratios of concretions from different sites within a single lake are similar, whereas concretions from different lakes have characteristic Fe:Mn ratios. Trace element concs are different in different lakes and are generally several orders of magnitude less than those of oceanic nodules.
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
Further details:
Fig1a. Specimen 1 and 2 are typical nodules from Ship Harbour Lake, Nova Scotia. Illustrations 3 and 4 are upper and lower surfaces of a larger concretion from the same lake
Fig1b. Specimen 5 displays the upper surface of an unusual form of Grand Lake precipitate. Illustrations 6 and 7 exhibit the upper and lower surfaces of typical Grand Lake concretion
Fig1c. Illustrations 8 and 9 show the upper and lower sides of a typical nodule from Mosque lake, Ontario
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
Project(s):
Coverage:
Median Latitude: 44.889293 * Median Longitude: -67.809887 * South-bound Latitude: 44.772800 * West-bound Longitude: -76.905290 * North-bound Latitude: 45.012950 * East-bound Longitude: -62.948330
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
Grand_Lake-H * Latitude: 44.882130 * Longitude: -63.576040 * Elevation: 70.0 m * Lake water depth: 1.5 m * Location: Nova Scotia, Canada * Method/Device: Dredge (DRG)
Comment:
The substrate of all concretions sites is coarse-grained quartz sand and pebbles. Core includes slate, sandstone and granite pebbles. Ferromanganese outer rind, 0.5-3.0 cm thick, was separated for analysis.
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 | Harriss, Robert C | |||
| 2 | Identification | ID | Harriss, Robert C | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Harriss, Robert C | Geocode | |
| 4 | Mercury | Hg | mg/kg | Harriss, Robert C | Mercury vapor detector | |
| 5 | Description | Description | Harriss, Robert C |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
34 data points
Data
| 1 Event | 2 ID | 3 Depth sed [m] | 4 Hg [mg/kg] | 5 Description |
|---|---|---|---|---|
| Grand_Lake-H | GL-1-W | 0 | 0.050 | |
| Grand_Lake-H | GL-1-X | 0 | 0.034 | |
| Grand_Lake-H | GL-1-Y | 0 | 0.046 | |
| Grand_Lake-H | GL-1-Z | 0 | 0.040 | |
| Grand_Lake-H | GL-1-C1 (10) | 0 | 0.064 | Analysis of a composite of 10 concretions |
| Grand_Lake-H | GL-1-C2 (10) | 0 | 0.040 | Analysis of a composite of 10 concretions |
| Grand_Lake-H | GL-2-Z | 0 | 0.044 | |
| Grand_Lake-H | GL-2-C1 (9) | 0 | 0.034 | Analysis of a composite of 9 concretions |
| Grand_Lake-H | GL-4-C1 (5) | 0 | 0.056 | Analysis of a composite of 5 concretions |
| Lake_Charlotte-S | SH-1-X | 0 | 0.050 | |
| Lake_Charlotte-S | SH-1-Y | 0 | 0.067 | |
| Lake_Charlotte-S | SH-1-Z | 0 | 0.040 | |
| Lake_Charlotte-S | SH-1-C1 (16) | 0 | 0.021 | Analysis of a composite of 16 concretions |
| Lake_Mosque-H | ML-1-C1 (16) | 0 | 0.030 | Analysis of a composite of 16 concretions |