Abstract
The crystalline Stockholm Archipelago contains several deep seated tectonic lineaments of mainly Svecofennian age. Along parts of these lineaments, gas with a thermogenic signature rises to the surface creating pockmarks in the seabed. Ground water is known also to leak from intersecting submarine eskers in the area, but this phenomenon has so far not been proved to develop distinct pockmarks. The east-west direction is regarded to be the youngest out of four main lineament directions in the Archipelago. Investigations have been carried out along the eastwest Strömma lineament at Stavsnäs with respect to pockmark structures, location of main fractures within the lineament, and the gas content in clay samples along a line perpendicular to the lineament. Chemical analyses show that anomalous amounts of gas with thermogenic signature are contained in samples collected from within the lineament as compared to samples collected in the adjacent areas to the north and south. Gas eruptions are reported to occur frequently nearshore along the islands within the lineament at Stavsnäs.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
