THE MONASTERY HILL: GEOPHYSICAL METHODS FOR DESCRIBING ARCHAEOLOGY AND NEAR-SURFACE GEOLOGY IN LÖDÖSE, SW SWEDEN

Detta är en Master-uppsats från Göteborgs universitet/Institutionen för geovetenskaper

Sammanfattning: Even though Sweden has been one of the leading countries in the development of nearsurfacegeophysics instrumentation and practices, geophysical surveys in archaeology are notcommonly used in Sweden. However, it is becoming increasingly popular, especially the useof ground-penetrating radar and metal detectors. Therefore, it is of great interest to investigatethe usability of other geophysical methods for accurately describing the archaeologicalpotential. This study aims at comparing resistivity and magnetic gradiometry to previousground-penetrating radar measurements and archaeological excavations. The study area islocated in Lödöse, South-West Sweden, which was once one of the most important citiesin medieval Sweden. The surveys were made over the Monastery Hill, where a Dominicanmonastery and an older church are located beneath the surface. This study is showing thatclearer images are given from the GPR measurements, but additional features can be seen inthe resistivity results. The magnetic gradiometry does not show any structures that can easilybe compared to the GPR and resistivity but shows another structure that does not appear inthe other two surveys. The resistivity and gradiometry surveys are also used to interpret thematerial of the archaeological features as well as the surrounding geology. All in all, the differentmethods have different pros and cons and illuminate different archaeological featuresin the subsurface. Used together, they can give an unsurpassed information source, short ofexcavation only.

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