On horizontal crustal strain in Finland
- 36 Downloads
The part of the Baltic Shield located within Finland consists mainly of two tectonic units: the Archaean basement and the Proterozoic bedrock formed by various types of granitoids, and metamorphosed sedimentary and volcanic rocks. These are further divided into smaller subblocks. Horizontal relative movements between and within the main units have been detected by comparison of original terrestrial triangulation and repeated trilateration observations with time interval on the average 30 years (12 to 46 years). The strain pattern obtained is in agreement with geological structures as well as with a completely independently determined crustal uplift pattern.
KeywordsGreenstone Belt Bouguer Anomaly Baltic Shield Land Uplift Strain Tensor Component
Unable to display preview. Download preview PDF.
- Ahjos,T. & Uski,M.,1991. Earthquake Epicenters in Northern Europe. Proc. Second Workshop on Investigation of the Lithosphere. Seism. Inst., Univ. Helsinki, Rep. S-25. Helsinki.Google Scholar
- Chen,R.,1991. On the Horizontal Crustal Deformations in Finland. Rep. Finn. Geod. Inst. No. 91:1. Helsinki.Google Scholar
- Jaeger,J.C.,1964. Elasticity, Fracture and Flow, with Engineering and Geological Applications. Methuen, London.Google Scholar
- Kakkuri,J.,1988. Neotectonic Movements in Finland. Proc. Lejondal Symp. on Neotectonics. PPPL Report 1988, Ed. N. Mörner. Stockholm.Google Scholar
- Kakkuri,J.,1991. Geodetic Operations in Finland 1987–1991, p. 5. Helsinki.Google Scholar
- Kakkuri,J. & Chen,R.,1990. 4-D Adjustment of the Finnish First-Order Triangulation: Results of a Test Computation. Lecture Notes in the Earth Sciences 29 (Edited by F.K.Brunner & Ch.Rizos). Springer-Verlag.Google Scholar
- Kakkuri, J./Parm,T. and Ashkenazi,V./ Crane, S.A., 1982. Accuracy Analysis of the Finnish Laser Geodimeter Traverse. Proc. Int. Symp. on Geodetic Networks and Computation (Ed. R.Sigl). Vol. V, pp. 85–92. München.Google Scholar