The large geophysical database of the Siljan region contains a wealth of information about the impact structure and can be the basis for further studies of the effect of impact on the physical properties of the involved rocks. The documentation and reports of geoscientific data accumulated by the Deep Gas Project are available at Vattenfall (The Swedish State Power Board) Support AB in Stockholm. In the scientific summary report by Juhlin (1991), 17 sector reports and 41 publications concerning the results from the Deep Gas Project are listed. (Reports after 1991 have not been summarized in any publication). The airborne geophysical, gravity and petrophysical data are available from the Geological Survey of Sweden.
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