2009/01/01 by Joachim Jacobs, Gernot Patzelt, Jacobs, J. +5
Earth and Planetary Sciences · #Climate change and permafrost #Cryospheric studies and observations #Geology and Paleoclimatology Research #Science
paper · pdf · doi:10.2312/polarforschung.79.1.21
openalex publication_date 2009/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/15
gress, Fig. 2) is an approximately 300 m long ridge that hardly rises from the ice surface at an elevation of about 2140 m. It is mainly composed of metasedimentary rocks, including paragneisses, metapelites and hornblende-biotite gneiss. They are interbedded with coarse-grained porphyroblastic felsic gneiss and a two-mica augengneiss, probably representing metaigneous rocks. The southern outcrop measures only 50 m across and is composed of a medium to coarse-grained metagranodiorite. These rocks are typical for the Sivorg Terrane, probably representing a Mesoproterozoic supracrustal sequence that is intruded by various igneous rocks. Most of the metamorphic rocks have a well-developed foliation and lineation and show folding on NE trending fold axes. The foliation planes dip steeply towards the NW or, more commonly, moderately to the SE. Lineation and fold axes