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Geophysical investigations of the Siljan impact structure - A short review
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering.
2005 (English)In: IMPACT TECTONICS / [ed] Koeberl, C; Henkel, H, 2005, 247-283 p.Conference paper (Refereed)
Abstract [en]

Siljan in southwest Sweden is the largest impact structure in western Europe, with a present topographic diameter of ca. 75 km. Recent age determinations indicate an age of 377 Ma. The bedrock geology of the region has recently been re-mapped by the Geological Survey of Sweden in the scale of 1:50 000. There is now complete coverage with airborne geophysics. New maps of the geophysical data have been prepared for this review. In connection with the Deep Gas Project, further geophysical studies were made and two drill holes were sunk to over 6 kin depth in the central uplift of the structure. The Deep Gas Project produced a large number of reports and publications, which are listed in the summary report of Juhlin (1991). Some of the results are compiled and shortly summarized here. Digital elevation data are available with 50 in spatial resolution, and a gray tone map has been prepared with the regional trend removed. A profile of these data shows that the peak ring of the structure is still visible in the morphology.

Place, publisher, year, edition, pages
2005. 247-283 p.
National Category
Civil Engineering
URN: urn:nbn:se:kth:diva-42788DOI: 10.1007/3-540-27548-7_9ISI: 000229304500009ISBN: 3-540-24181-7OAI: diva2:447720
8th International Meeting on Response of the Earth System to Impact Processes (IMPACT) Location: Mora, SWEDEN Date: MAY 31-JUN 03, 2002
QC 20111013Available from: 2011-10-13 Created: 2011-10-12 Last updated: 2011-10-13Bibliographically approved

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