Moho and basement depth in the NE Atlantic Ocean based on seismic refraction data and receiver functions

Thomas Funck, Wolfram H. Geissler, Geoffrey S. Kimbell, Sofie Gradmann, Ögmundur Erlendsson, Kenneth McDermott, Uni K. Petersen

Publikation: Bidrag til bog/rapport/konferenceproceedingsBogkapitelForskningpeer review

29 Citationer (Scopus)

Abstrakt

Seismic refraction data and results from receiver functions were used to compile the depth to the basement and Moho in the NE Atlantic Ocean. For interpolation between the unevenly spaced data points, the kriging technique was used. Free-air gravity data were used as constraints in the kriging process for the basement. That way, structures with little or no seismic coverage are still presented on the basement map, in particular the basins off East Greenland. The rift basins off NW Europe are mapped as a continuous zone with basement depths of between 5 and 15 km. Maximum basement depths off NE Greenland are 8 km, but these are probably underestimated. Plate reconstructions for Chron C24 (c. 54 Ma) suggest that the poorly known Ammassalik Basin off SE Greenland may correlate with the northern termination of the Hatton Basin at the conjugate margin. The most prominent feature on the Moho map is the Greenland-Iceland-Faroe Ridge, with Moho depths > 28 km. Crustal thickness is compiled from the Moho and basement depths. The oceanic crust displays an increased thickness close to the volcanic margins affected by the Iceland plume.

OriginalsprogEngelsk
TitelThe NE Atlantic Region: A reappraisal of crustal structure, tectonostratigraphy and magmatic evolution
RedaktørerG. Péron-Pindvidic, J.R. Hopper, T. Funck, M.S. Stoker, C. Gaina, J.C. Doornenbal, U.E. Árting
UdgivelsesstedLondon
ForlagGeological Society of London
Sider207-231
Antal sider25
ISBN (Trykt)978-1-78620-278-9
DOI
StatusUdgivet - 2017

Publikationsserier

NavnGeological Society Special Publications
ForlagGeological Society of London
Vol/bind447
ISSN (Trykt)0305-8719

Programområde

  • Programområde 3: Energiressourcer

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