@ARTICLE{Birkenmajer_Krzysztof_The_1991,
 author={Birkenmajer, Krzysztof},
 volume={vol. 12},
 number={No 3},
 journal={Polish Polar Research},
 pages={269-278},
 howpublished={online},
 year={1991},
 publisher={Polish Academy of Sciences},
 publisher={Committee on Polar Research},
 abstract={The Jarlsbergian unconformity at the Late Proterozoic-Early Cambrian boundary, is expressed in the Hecla Hoek Succession of South Spitsbergen as a regional low-angle unconformity, the result of folding and subsequent erosion of the Late Precambrian Jarlsbergian Basin deposits. The unconformity pre-dates the Bonnia-Olenellus trilobite zone; the sedimentary hiatus covers the lowest Cambrian Fallotaspis and Nevadella trilobite zones, and a closer undefined uppermost part of the Late Proterozoic. There are no Varangian (latest Proterozoic) tillites present in south Spitsbergen at the top of the Late Proterozoic metasediment column which is represented by the Gashamna Formation phyllites and associated rocks.},
 type={Article},
 title={The Jarlsbergian unconformity (Proterozoic/Cambrian boundary )and the problem of Varangian tillites in South Spitsbergen},
 URL={http://journals.pan.pl/Content/111133/PDF/1991-3_269-278.pdf},
 keywords={Arctic, Spitsbergen, Late Proterozoic, Early Cambrian, unconformity},
}