The cluster-ridge pattern of mantled gneiss domes in eastern Finland: Evidence for large-scale gravitational instability of the Proterozoic crust

Details The cluster-ridge pattern of mantled gneiss domes in eastern Finland: Evidence for large-scale gravitational instability of the Proterozoic crust The cluster-ridge pattern of mantled gneiss domes in eastern Finland: Evidence for large-scale gravitational instability of the Proterozoic crust

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980e%26psl..47..441b&link_type=abstract

Earth and Planetary Science Letters, Volume 47, Issue 3, p. 441-449.

Computer Science

1

Scientific paper

The Karelian mantled gneiss domes of Finland occur within a band some 100 km wide and at least 400 km long, bordering the Archean basement. Previous field analysis has shown that domes were emplaced during regional deformation. Domes tend to cluster along nine ridges oriented NNE-SSW to NE-SW. Data concerning dome size, shape and distribution are presented. Good correlations are found between shape, orientation and spacing of domes and the regional foliation. The spacing between the ridges is consistent and varies from 27 to 42 km according to their orientation but the dome spacing along the ridges is strongly modified by the regional deformation. The comparison with theoretical and experimental models allows an interpretation in terms of diapiric periodicity. The disposition in ridges could be a boundary effect controlled by the shape of the Archean-Karelian interface. The conservation of the cluster-ridge pattern, in spite of the regional deformation, tends to prove the predominance of gravitational instability over regional shortening in the tectonic evolution of the Karelides.

Affiliated with

Also associated with

No associations

Rating

The cluster-ridge pattern of mantled gneiss domes in eastern Finland: Evidence for large-scale gravitational instability of the Proterozoic crust does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The cluster-ridge pattern of mantled gneiss domes in eastern Finland: Evidence for large-scale gravitational instability of the Proterozoic crust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The cluster-ridge pattern of mantled gneiss domes in eastern Finland: Evidence for large-scale gravitational instability of the Proterozoic crust will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1359340