Peregrine Diamonds Ltd. PGDIF

New work at DO27/DO18 ??

[madmann]

DS1611-2103 2014	Devriese, S.G.R., Corcoran, N., Cowan, D., Davis, K., Bild-Enkin, D., Fournier, D., Heagy, L., Kang, S., Marchant, D., McMillan, M.S., Mitchell, M., Rosenkjar, G., Yang, D., Oldenburg, D.W.	Magnetic inversion of three airborne data sets over the Tli Kwi Cho kimberlite complex.	SEG Denver annual Meeting, pp. 1790-1794. pdf	Canada, Northwest Territories	Deposit - Tli Kwi Cho
	Abstract: The magnetic and electromagnetic responses from airborne systems at Tli Kwi Cho, a kimberlite complex in the Northwest Territories, Canada, have received considerable attention over the last two decades but a complete understanding of the causative physical properties is not yet at hand. Our analysis is distributed among three papers. In the first, we find a 3D magnetic susceptibility model for the area; in the second, we find a 3D conductivity model; and in the third paper, we find a 3D chargeability model. Our goal is to explain all the geophysical results within a geologic framework. In this first paper, we invert three independent airborne magnetic data sets flown over the Tli Kwi Cho kimberlite complex located in the Lac de Gras kimberlite field in Northwest Territories, Canada. The complex consists of two kimberlites known as DO-27 and DO- 18. An initial airborne DIGHEM survey was flown in 1992 and AeroTEM and VTEM data subsequently acquired in 2003 and 2004, respectively. In this paper, we invert each magnetic data set in three dimensions. Both kimberlites are recovered in each model, with DO-27 as a more susceptible body than DO-18. Our goal is to simultaneously invert the three data sets to generate a single susceptibility model for Tli Kwi Cho. This project is part of a larger, on-going investigation by UBC-GIF on inverting magnetic, electromagnetic, and induced polarization data from the Tli Kwi Cho area.
DS1611-2104 2016	Devriese, S.G.R., Davis, K., Oldenburg, D.W.	Inversion of airborne geophysics over the Tli Kwi Cho kimberlite complex, Part I: potential fields.	Tli Kwi Cho Workshop UBC, Sept. 8, 49p. Contact [e-mail]	Canada, Northwest Territories	Deposit - Tli Kwi Cho