Survey Metadata

Surface water, Lake sediment

Northwest Territories

1976

Lake sediment and water sampling, NTS 75F, K, Nonacho Lake area, Northwest Territories, 1976.





Location map

(requires an Internet connection)



Survey Description


During the summer of 1976, lake-centre sediments and water samples were collected in the Nonacho Lake area, Northwest Territories.  The samples were collected at high density (approximately 2.1 sites/square mile) using a Hughes 500-C turbo helicopter.  The samples were collected from 17 anomalous areas previously highlighted by lake sediment sampling in 1975.  The data are published in Geological Survey of Canada Open File 489.

Data Description:

Paper report with data lists.

Quantities Analysed:

Lake sediments analysed by AAS for Zn, Cu, Pb, Ni, Co, Ag, Mn, Mo, Fe and Hg; by INAA-delayed neutron counting for U; by colourimetric methods for As; by gravimetric techniques for LOI.  Water samples selectively analysed in the field for uranium (fluorimeter) and total heavy metals (colourimetric technique).  Specific conductivity and pH on all water samples and alkalinity on U-rich waters.

Geochem Maps Available:

None.

Sampling Procedure

Water samples were collected by hand in 500 ml polyethylene bottles from the lake surface.  An improved version of the Hornbrook sediment sampler allowed a sampling rate averaging 21 per hour.

Publication History

Index Publication
1 Maurice, Y.T. (1976). Detailed geochemical investigations for uranium and base metal exploration in the Nonacho Lake area, District of Mackenzie. In Report of Activities Part C. Geological Survey of Canada, Paper 76-1C, p. 259-262. (more)
2 Maurice, Y.T. (1977). Follow-up geochemical activities in the Nonacho Lake Area, District of Mackenzie. Geological Survey of Canada, Open File 489. (more)
3 Maurice, Y.T. (1984). Interpretation of data from Nonacho Lake - East Arm of Great Slave Lake Region, District of MacKenzie. Geological Survey of Canada, Paper 84-12. (more)

Project History

Index Year Project
1 1975-1977 Nonacho Belt lake sediment and water surveys, 1975-1976 (more)

Geographic Extent

Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude
61.26° 63° -110° -108.59°

The geographic extent of the survey is defined by the following polygons:

  • Covers part of NTS 75K/13 (Sentinel Point), the Bigstone Point anomaly, Northwest Territories.  It is located north of McLeod Bay (northeast part of Great Slave Lake), approximately 2 km north of Bigstone Point.

  • Covers parts of NTS 75K/14 (Hoarfrost River) and 75K/15 (Parry Falls), the Hoarfrost River anomaly, Northwest Territories.  It is located north of McLeod Bay (northeast part of Great Slave Lake), approximately 8 km NE of where Hoarfrost River enters McLeod Bay.

  • Covers part of NTS 75K/13 (Sentinel Point), the Sentinel Point anomaly, Northwest Territories.  It is located near Sentinel Point on the south shore of McLeod Bay (northeast part of Great Slave Lake) on the Kahochella Peninsula.  Wildbread Bay is located immediately south.

  • Covers parts of NTS 75K/10 (Pikes Portage) and 75K/15 (Parry Falls), the Pikes Portage anomaly, Northwest Territories.  It is located at the east end of McLeod Bay (northeast part of Great Slave Lake).  It is located approximately 5 km east of Charlton Bay, also at the east end of McLeod Bay.  Tyrrell Falls is approximately 5 km to the north.

  • Covers part of NTS 75K/12 (Lausen Lake), the Lausen Lake anomaly, Northwest Territories.  It is located approximately 5 km southeast of Tochatwi Bay (part of Great Slave Lake).  It encloses parts of Lausen Lake, Compton Lake and Moose Lake.

  • Covers part of NTS 75K/5 (Bunting Lake), the McDonald Fault anomaly, east of the East Arm of Great Slave Lake, Northwest Territories.  It is located approximately 2 km south of Wilson Lake and includes part of Schist Lakes to the south.

  • Covers part of NTS 75K/7 (Magpie Lake), the Magpie Lake anomaly, east of the East Arm of Great Slave Lake, Northwest Territories.  It is located approximately 5 km southeast of Magpie Lake and Snowdrift River runs through the northwest corner.

  • Covers parts of NTS 75K/6 (Robert Lake) and 75K/7 (Magpie Lake), the Robert Lake anomaly, east of the East Arm of Great Slave Lake, Northwest Territories.  It is located approximately 2 km north of Norman Lake and 5 km southeast of Robert Lake.  Snowdrift River runs east-west through the area.

  • Covers parts of NTS 75K/4 (Siltaza Lake) and 75K/5 (Bunting Lake), the Siltaza Lake anomaly, east of the East Arm of Great Slave Lake, Northwest Territories.  It is located approximately 5 km northwest of Siltaza Lake.

  • Covers part of NTS 75K/4 (Siltaza Lake), the Murphy Lake anomaly, east of the East Arm of Great Slave Lake, Northwest Territories.  It is located approximately 1 km southwest of Siltaza Lake.  It encloses the northwest part of Murphy Lake.

  • Covers part of NTS 75F/14 (Etthengunneh Island), the Steward Lake anomaly, east of Great Slave Lake, Northwest Territories.  It is located just west of Stewart Lake at the north part of Nonacho Lake.

  • Covers part of NTS 75F/13 (Walker Lake) and 75F/14 (Etthengunneh Island), the Sparrow Bay anomaly, east of Great Slave Lake, Northwest Territories.  It is located just south of Sparrow Bay at the north part of Nonacho Lake.

  • Covers parts of NTS 75F/6 (Heron Lake) and 75F/11 (Louisen Lake), the Louisen Lake anomaly, Northwest Territories.  It is located on the east side of Hjalmar Lake, approximately 10 km southwest of Louisen Lake.

  • Covers part of NTS 75F/12 (Tronka Chua Lake), the Hjalmar Lake anomaly #1, Northwest Territories.  It is located south of Nonacho Lake and on the west side of Hjalmar Lake.

  • Covers part of NTS 75F/5 (Salkeld Lake), the Hjalmar Lake anomaly #2 at the southern part of Hjalmar Lake, Northwest Territories.  It is located approximately 8 km northeast of Salkeld Lake.

  • Covers part of NTS 75F/6 (Heron Lake), the Heron Lake anomaly, Northwest Territories.  It is located just north of Heron Lake and just west of Halliday Lake.

  • Covers part of NTS 75F/5 (Salkeld Lake), the Thekulthili Lake anomaly, Northwest Territories.  It is located on the northeast shore of Thekulthili Lake, south of Salkeld Lake.

Keywords


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