Abstract
In the Purcell anticlinorium of the Canadian Cordillera, prominent upper-crustal seismic reflectors and areas of high electrical conductivity coincide over a wide area. Reflective layers traceable to outcrop and to a drill hole are caused mostly by impedance contrasts between Proterozoic gabbroic sills and metasedimentary rocks. Layers with high electrical conductivity are zones enriched in magnetic sulfide within the sedimentary rocks. Attempts to interpret reflectivity and high conductivity in terms of a single geologic process must be done with care. -from Authors
Original language | English |
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Pages (from-to) | 141-144 |
Number of pages | 4 |
Journal | Geology |
Volume | 23 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1995 |
Externally published | Yes |