The Supanberget area – basement imbrication and detached foreland thrusting in the Tertiary fold-and-thrust belt, Svalbard

• Published in: Polar Research
• Main Authors: Dallmann, Winfried K., Maher Jr., Harmon D.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Norwegian Polar Institute 1989
• Subjects: Svalbard; Supanberget; Polar Research; Spitsbergen
• Online Access: https://polarresearch.net/index.php/polar/article/view/2406; https://doi.org/10.3402/polar.v7i2.6834

The Supanberget area, situated in the southern part of the Tertiary Spitsbergen fold-and-thrust belt, occupies a position mainly within the central zone of the belt, characterized by basement-involved thrusting, but includes part of an eastern foreland zone of detached, thin-skinned thrust tectonics. The peculiar feature of Supanberget is the thrust- ‘sliced’ tectonic style that deforms a previously tightly folded basement-cover contact. Foreland structures indicate the additional presence of a subsurface detachment at a deeper structural level. Contrasts in magnitude and orientation of basement anisotropics may control lateral changes in tectonic style.