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The Bjørntvet metabentonite:A new correlation tool for the Silurian of the southwest Oslo Region
Bjø rntvet metabentonite new correlation tool Silurian southwest Oslo Region
2009/12/3
A three-layer horizon of silicate-rich rock exposed in the Bjørntvet limestone quarry in Porsgrunn has been identified as a metabentonite. Its total thickness is 75 cm, it has a dark green-grey...
Dendroid graptolites in the Elnes Formation (Middle Ordovician) Oslo Region,Norway
Dendroid graptolites Elnes Formation Oslo Region
2009/12/3
Well preserved relief specimens of the dendroid graptolites Dendrograptus rigidus Bulman, 1936 and Acanthograptus sp. have been discovered in a siltstone within the basal Engervik Member of the Elnes ...
Two species belonging to the Class Stelleroidea are described from Ordovician rocks of the Oslo Region, Norway. These are the asteroid, Cnemidactis osloensis n.sp, from the Elnes Formation (Llanvirn) ...
A revised stratigraphy for the Ringerike Group(Upper Silurian,Oslo Region)
revised stratigraphy Ringerike Group
2009/12/3
The Ringerike Group is a terrigenous succession of Upper Silurian sediments that outcrops in a number of areas within the Oslo Region of southern Norway. Despite being the focus of a number of studies...
Brachiopod bio- and ecostratigraphy in the lower part of the Arnestad Formation (Upper Ordovician),Oslo Region,Norway
Brachiopod bio- and ecostratigraphy lower part Arnestad Formation
2009/12/3
The aim of the present study is to improve knowledge of the brachiopod fauna in the lower part of the Arnestad Formation (Caradoc) in the Oslo-Asker district and to document faunal changes prior to th...
Aeromagnetic mapping of deep-weathered fracture zones in the Oslo Region–a new tool for improved planning of tunnels
Aeromagnetic mapping deep-weathered fracture zones Oslo Region planning of tunnels
2009/12/2
A new method referred to as the Amager Method (AeroMAgnetic and GEomorphological Relations) has been developed to map the occurrence of deep clay alteration in the bedrock of the Oslo Region. Rock ins...