Glaciation development and interstadial sea-level on central Spitsbergen, Svalbard |
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| Authors: | JON Y LANDVIK OTTO SALVIGSEN |
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| Institution: | Jon Y. Landvik, Department of Geology, Section B, University of Bergen, Altegt 41, N-5000 Bergen, Norway;Otto Salvigsen, Norsk Polarinstitutt, Rolfstangveien 12, N-1330 Oslo Lufthavn, Norway. May 1984 (revised September 1984). |
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| Abstract: | Above the marine limit in Gangdalen, Nordenskiold Land, a 20 m thick sequence of unconsolidated sediments occurs. On the top of striated bedrock it is composed of a 2m thick till bed, 15m gravel interpreted to be deposited as a sandur, and another till bed on the top. A solifluction deposit is capping the section. Fabric analyses and erratics in the two tills indicate a similar development in glacial transport directions during the two glaciations, starting with a local glaciation which subsequently turns into a larger glaciation centred over the eastern part of Svalbard. Co-existence of different ice domes over Spitsbergen is suggested. The sandur was deposited during an ice free period with a sea-level 40–80 m higher than at present. The section is undated. |
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