dc.contributor.author | Roberts, David | |
dc.contributor.author | Myrvang, Arne | |
dc.date.accessioned | 2020-08-26T09:09:51Z | |
dc.date.available | 2020-08-26T09:09:51Z | |
dc.date.issued | 2004 | |
dc.identifier.uri | https://hdl.handle.net/11250/2674234 | |
dc.description.abstract | Based on in situ rock stress measurements and contemporary stress orientation structures observed at diverse sites in Trøndelag, it can be shown that the Møre-Trøndelag Fault Complex marks an important structural divide separating crustal blocks with disparate, present-day stress fields. This supports earlier poposals reached by both field and numerical modelling studies; and, in one case, our data confirm published predicitions that constrasting contemporary stress fields should, theoretically, characterise the footwall and hangingwall blocks fo this major fault zone. The prevalent NW-SE horizontal compression recorded in coastal areas of central Norway northwest of the Møre-Trøndelag Fault Complex accords with borehole breakout and earthquake focal mechanism solution data acquired offshore, indicating that this patterns is likely to relate to a distributed ridge-push force arising from divergent spreading along the active axial ridge of the North Atlantic Ocean. Taken as a whole, the combination of in situ rock stress measurements and field observations of drillhole reverse-slip offsets and complementary stress patters existing in exposed bedrock. | |
dc.language.iso | eng | |
dc.relation.ispartofseries | NGU Bulletin (442) | |
dc.rights | Navngivelse 4.0 Internasjonal | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | |
dc.subject | IN-SITU UNDERSØKELSE | |
dc.title | Contemporary stress orientation features in bedrock, Trøndelag, central Norway, and some regional implications. | |
dc.type | Journal article | |
dc.description.localcode | 51424 | |
dc.source.pagenumber | 53-63 | |