Stratigraphy of the uppermost Old Red Sandstone of Svalbard (Mimerdalen Subgroup)

Polar research

Karsten Piepjohn¹  Winfried K. Dallmann² 

[1] Federal Institute for Geosciences and Natural ResourcesStilleweg 2, DE-30655 Hannover, Germany;Norwegian Polar InstituteFram Centre, NO-9296 Tromsø, NorwayCorrespondence

关键词: Svalbard;    geology;    stratigraphy;    Mimerdalen Subgroup;    Devonian;    Old Red;   

DOI  :  10.3402/polar.v33.19998

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

Between the fjords Dicksonfjorden and Billefjorden in central Spitsbergen, Svalbard's youngest deposits (Early Givetian to Famennian in age) of the Old Red Sandstone—the Mimerdalen Subgroup—are exposed. They form a narrow outcrop area parallel to the Billefjorden Fault Zone and overlie unconformably the multicoloured sandstones of the Lower Devonian Wood Bay Formation. Stratigraphic rank and subdivision of the succession were changed repeatedly since its first mention in 1910. Based on student work in 1996, as well as regional mapping by the authors in 1993 and 2003, the present work formalizes the stratigraphic framework of the succession. This framework has already been applied in recent geological maps. At the same time it is a continuation of the lithostratigraphic standardization carried out by the Committee on the Stratigraphy of Svalbard (1999), where only post-Devonian rocks were considered. Except for some small-pebble conglomerate layers in the Wood Bay Formation, the upper part of the Mimerdale...

【 授权许可】

CC BY-NC