Caledonian Basement (Hecla Hoek Succession) at Midterhuken, Bellsund, Spitsbergen: a Revision of Lithostratigraphy and Age

• Autorzy: Birkenmajer K.
• Języki publikacji: EN

Abstrakty

EN

Caledonian basement (Hecla Hoek Succession) of the Carboniferous through Tertiary platform coyer is exposed at Midterhuken, Bellsund, Spitsbergen. It consists of three rock-units, so far attributed to the "Magnethogda sequence" believed to represent Middle Proterozoic. In the present author's opinion, these units correlate well with Upper Proterozoic and Cambrian lithostratigraphic units of the Hornsund area, south Spitsbergen. At Midterhuken, there occur: (1) the Hoferpynten Formation (Upper Proterozoic Sofiebogen Group: dolostones, more than 600 m thick); (2) the Gashamna Formation (Upper Proterozoic Sofiebogen Group: phyllite and quartzite, about 300 m thick); (3) the Gnalberget Formation (Cambrian Sofiekammen Group: phyllitic limestone, probably more than 300 m thick). Small thickness of the Gashamna Formation, and the lack of the oldest lithostratigraphic units of the Sofiekammen Group (i.e., the Blastertoppen, the Vardepiggen and the Slaklidalen formations) at Midterhuken, seem to be mainly a result of Caledonian folding and thrusting.

Słowa kluczowe

EN

Spitsbergen; Upper Proterozoic; Cambrian; lithostratigraphy

• Wydawca: Centrum Upowszechniania Nauki PAN
• Czasopismo: Bulletin of the Polish Academy of Sciences. Earth Sciences
• Rocznik: 2002
• Tom: Vol. 50, nr 2
• Strony: 165--173
• Opis fizyczny: Bibiogr. 20 poz.

Twórcy

autor

Birkenmajer K.

• Institute of Geological Sciences, Polish Academy of Sciences, Kraków, Poland