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Index Geophysics

A seismic study of the rift zone in Northern Iceland


Title (Dublin Core)

en-US A seismic study of the rift zone in Northern Iceland

Description (Dublin Core)

en-US The complex geological-geophysical expedition of the Russian Academy of Sciences jointly with the National Energy Authority (Orkustofnun) of Iceland conducted in 1977 a detailed seismic investigation of the flood basalt and rift zones in northern Iceland, similar to studies in southwestern Iceland. Continuous seismic profiling with 4–6 shot points was carried out across a total length of 90 km. In the flood basalt zone shallow refracting horizons were observed with Vp = 4.3–4.5 km/s and tilted toward the rift zone. They closely correspond to dense sheets of flood basalts mapped geologically. Refracting and reflecting horizons at 2 to 12 or 15 km depth are tilted more gently in the same direction. A slight depression filled with neovolcanic formations with VP < 3 km/s exists near the surface in the rift zone. Reflectors with steep tilt can be traced to depths of 15 km. The deepest part of the depression is west of Myvatn in the region of current volcanism and rifting. A seismically homogeneous body without reflectors was detected under this region at 10–15 km depth. On the whole, the structure of the rift zone in northern Iceland is similar to, but more complex than, that of southwestern Iceland.

Creator (Dublin Core)

Zverev, S.M.
Litvinenko, I.V.
Palmason, G.
Yaroshevskaya, G.A.
Osokin, N.N.
Akhmetjev, M.A.

Subject (Dublin Core)

en-US Iceland
en-US Active rift zone
en-US Neovolcanic zone
en-US Crustal structure
en-US Seismic profiling
en-US Geodynamics

Publisher (Dublin Core)

en-US Journal of Geophysics

Date (Dublin Core)


Type (Dublin Core)

en-US Peer-reviewed Article

Format (Dublin Core)


Identifier (Dublin Core)

Source (Dublin Core)

en-US Journal of Geophysics; Vol 47 No 1 (1980): Journal of Geophysics; 191-201

Language (Dublin Core)


Relation (Dublin Core)