Interpretation of the Gravity Anomaly at Darnley Bay, N.W.T.
The almost circular gravity anomaly which lies at the head of Darnley Bay on the Arctic coast 400 km east of the Mackenzie Delta, has a radius of 50 km with Bouguer values rising 130 mgal above the background field. It is concluded that the anomaly is due to a basic or ultrabasic body in the form of...
| Published in: | Canadian Journal of Earth Sciences |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
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Canadian Science Publishing
1971
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/e71-090 http://www.nrcresearchpress.com/doi/pdf/10.1139/e71-090 |
| Summary: | The almost circular gravity anomaly which lies at the head of Darnley Bay on the Arctic coast 400 km east of the Mackenzie Delta, has a radius of 50 km with Bouguer values rising 130 mgal above the background field. It is concluded that the anomaly is due to a basic or ultrabasic body in the form of a truncated cone (which may narrow towards the surface or downwards), lying at a comparatively shallow depth within the Proterozoic sediments. Having obtained a feasible configuration for the body, the influence it may have had on the deposition of later Proterozoic and early Paleozoic sediments is discussed in speculative terms. |
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