Interpretation of gravity and magnetic data from southwestern Newfoundland and their correlation with Lithoprobe East seismic lines 89-11 and 89-12
Several Newfoundland Appalachian terranes converge in the southwest corner of the island. The recent Lithoprobe East deep seismic reflection profiles imaged the crust along a transect across this area. In this paper, we present the gravity and magnetic data for the area and process them using shaded...
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Canadian Science Publishing
1994
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Online Access: | http://dx.doi.org/10.1139/e94-080 http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-080 |
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crcansciencepubl:10.1139/e94-080 2023-12-17T10:44:12+01:00 Interpretation of gravity and magnetic data from southwestern Newfoundland and their correlation with Lithoprobe East seismic lines 89-11 and 89-12 Wiseman, R. Miller, Hugh G. 1994 http://dx.doi.org/10.1139/e94-080 http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-080 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 31, issue 6, page 881-890 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1994 crcansciencepubl https://doi.org/10.1139/e94-080 2023-11-19T13:39:15Z Several Newfoundland Appalachian terranes converge in the southwest corner of the island. The recent Lithoprobe East deep seismic reflection profiles imaged the crust along a transect across this area. In this paper, we present the gravity and magnetic data for the area and process them using shaded relief, horizontal and vertical gradient, upward continuation, and layer stripping techniques to interpret the more subtle features of the fields.Traditional two and one-half dimensional gravity and magnetic modelling is undertaken using constraints from the reflection data to develop a model of the crust in this region. The results from the processing are then used to interpret the crustal structure away from the seismic line.In general, we find that the major features on the gravity and magnetic anomaly maps can be explained by sources in the upper crust. The major faults in the area bound terranes that differ in potential field character. A minor change to the location of one terrane boundary is suggested. The rest correlate well with the geophysical data. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Canadian Journal of Earth Sciences 31 6 881 890 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Wiseman, R. Miller, Hugh G. Interpretation of gravity and magnetic data from southwestern Newfoundland and their correlation with Lithoprobe East seismic lines 89-11 and 89-12 |
topic_facet |
General Earth and Planetary Sciences |
description |
Several Newfoundland Appalachian terranes converge in the southwest corner of the island. The recent Lithoprobe East deep seismic reflection profiles imaged the crust along a transect across this area. In this paper, we present the gravity and magnetic data for the area and process them using shaded relief, horizontal and vertical gradient, upward continuation, and layer stripping techniques to interpret the more subtle features of the fields.Traditional two and one-half dimensional gravity and magnetic modelling is undertaken using constraints from the reflection data to develop a model of the crust in this region. The results from the processing are then used to interpret the crustal structure away from the seismic line.In general, we find that the major features on the gravity and magnetic anomaly maps can be explained by sources in the upper crust. The major faults in the area bound terranes that differ in potential field character. A minor change to the location of one terrane boundary is suggested. The rest correlate well with the geophysical data. |
format |
Article in Journal/Newspaper |
author |
Wiseman, R. Miller, Hugh G. |
author_facet |
Wiseman, R. Miller, Hugh G. |
author_sort |
Wiseman, R. |
title |
Interpretation of gravity and magnetic data from southwestern Newfoundland and their correlation with Lithoprobe East seismic lines 89-11 and 89-12 |
title_short |
Interpretation of gravity and magnetic data from southwestern Newfoundland and their correlation with Lithoprobe East seismic lines 89-11 and 89-12 |
title_full |
Interpretation of gravity and magnetic data from southwestern Newfoundland and their correlation with Lithoprobe East seismic lines 89-11 and 89-12 |
title_fullStr |
Interpretation of gravity and magnetic data from southwestern Newfoundland and their correlation with Lithoprobe East seismic lines 89-11 and 89-12 |
title_full_unstemmed |
Interpretation of gravity and magnetic data from southwestern Newfoundland and their correlation with Lithoprobe East seismic lines 89-11 and 89-12 |
title_sort |
interpretation of gravity and magnetic data from southwestern newfoundland and their correlation with lithoprobe east seismic lines 89-11 and 89-12 |
publisher |
Canadian Science Publishing |
publishDate |
1994 |
url |
http://dx.doi.org/10.1139/e94-080 http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-080 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Earth Sciences volume 31, issue 6, page 881-890 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e94-080 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
31 |
container_issue |
6 |
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881 |
op_container_end_page |
890 |
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1785561402425999360 |