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The geology and geophysics of the Oslo riftThe regional geology and geophysical characteristics of the Oslo graben are reviewed. The graben is part of a Permian age failed continental rift. Alkali olivine, tholefitic, and monzonitic intrusives as well as basaltic lavas outline the extent of the graben. Geophysical evidence indicates that rifting activity covered a much greater area in Skagerrak Sea as well as the Paleozoic time, possibly including the northern Skagerrak Sea as well as the Oslo graben itself. Much of the surficial geologic characteristics in the southern part of the rift have since been eroded or covered by sedimentation. Geophysical data reveal a gravity maximum along the strike of the Oslo graben, local emplacements of magnetic material throughout the Skagerrak and the graben, and a slight mantle upward beneath the rift zone. Petrologic and geophysical maps which depict regional structure are included in the text. An extensive bibliography of pertinent literature published in English between 1960 and 1980 is also provided.
Document ID
19810021160
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Ruder, M. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 4, 2013
Publication Date
July 1, 1981
Subject Category
Geophysics
Report/Patent Number
REPT-922
NASA-TM-82166
Accession Number
81N29698
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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