Speaker: Greg Hodges – Fugro Airborne Surveys
Title: HELITEMTM Data Over Lalor and Chisel Lake Deposits
Date: Tuesday May 7, 2013
Location: 4th Floor Conference Room, Room 451, 409 Granville (UK Building at Granville and Hastings)
Video-Link: Those who are interested but unable to attend in person will be able to catch the presentation live via online GoToMeeting. Details will be provided the day before.
Abstract:
The test survey that detected the Lalor Lake and Chisel North deposits showed that HELITEM could detect these targets at greater than 550m depth, but it also showed some limitations of modeling and some widely accepted ideas about time domain EM. The initial modeling suggested that the deposit might not be detectable, but the survey went ahead and proved successful, exceeding the predictions. The targets were flown and re-flown with several pulse widths and base frequencies, and the results generally matched prediction from theory, but not always intuitive assumptions. The deposits are well known from extensive drilling and the results of the survey have since been modeled with both discrete plate conductors (LeroiAir) and 3D UBC inversions with good results, but once again some mysteries become apparent.
Post-Talk: Those interested are encouraged to head to Moose’s Downunder after the talk