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영어

The rock phases, site environment and damages for the selected 7 petroglyphs have been investigated for understanding the conservation. The petroglyphs were sculptured on the outcrops or talus regardless of the certain rock phase and might be considered therock surface condition and geographic situation. The engraved surfaces are generally the joint or fault planes. Those are severely damaged in general by the weathering, humankind and organisms because of abandoning naturally. Grain separation, surface exfoliation and development of onion structure are the main phenomena of the damages.
Also as in the Ulsan Chunjeonri and Ulsan Daegokri Petroglyphs, groundwater leached out along the structural lineaments and soil water are the important factors on the damages. As the damages of the petroglyphs in the country are the results of the rock phases, site environments, geographic situation, weathering and organisms, for the conservation the detail investigations must be done in first. Also the conservation treatment have been done by the experiment on the rocks.