Migrating Basins on the Old Red Continent

Abstract

EVIDENCE of long-continued, interplay of Old Red tectonic activity and sedimentation has recently been unravelled in the Hornelen Series of western Norway. This series has an estimated stratigraphical thickness of 20–25,000 metres of shallow-water clastic sediments¹. The enormous thickness probably is real because tectonic repetitions should not escape notice in this well-exposed, obsequent rift block mountain-area with barren homoclinal ridges and mountain peaks up to more than 1,600 metres above the fjords. The disposition of the bedding simulates an amphitheatre with regular eastwards dip in the middle.