Reconnaissance sub-bottom profiling survey at Larder Lake, Ontario / G.R. Brooks. : M183-2/7986E-PDF

"As part of a reconnaissance sub-bottom acoustic profiling (SAP) survey, 29 SAP were collected from the southern area of the east basin of Larder Lake, Ontario, on July 20, 2014. An additional 25 SAP were collected from Leroy, Northwest and Fitzpatrick bays of the west basin on July 23, 2014. Good penetration of the sub-bottom was obtained within the profiled areas. Three facies can be identified within the SAP returns that represent lacustrine, glaciolacustrine and mass movement deposits. The profiles collected from Larder Lake demonstrate the presence of mass movement deposits within this basin. However, deep water conditions in many of the profiled areas represent a challenge to coring, depending on the coring equipment used"--Abstract, page 2.

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