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Funck T, Geissler WH, Kimbell GS, Gradmann S, Erlendsson Ö, McDermott K, Petersen UK. Moho and basement depth in the NE Atlantic Ocean based on seismic refraction data and receiver functions. ACTA ACUST UNITED AC 2016. [DOI: 10.1144/sp447.1] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AbstractSeismic 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.
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Affiliation(s)
- Thomas Funck
- Geological Survey of Denmark and Greenland, Øster Voldgade 10, 1350 Copenhagen K, Denmark
| | - Wolfram H. Geissler
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Alten Hafen 26, 27568 Bremerhaven, Germany
| | | | - Sofie Gradmann
- Geological Survey of Norway, Leiv Eirikssons vei 39, 7040 Trondheim, Norway
| | | | - Kenneth McDermott
- UCD School of Geological Sciences, University College Dublin, Belfield, Dublin 4, Ireland
| | - Uni K. Petersen
- Faroese Earth and Energy Directorate, Brekkutún 1, 110 Tórshavn, Faroe Islands
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Saunders AD, Fitton JG, Kerr AC, Norry MJ, Kent RW. The North Atlantic Igneous Province. LARGE IGNEOUS PROVINCES: CONTINENTAL, OCEANIC, AND PLANETARY FLOOD VOLCANISM 2013. [DOI: 10.1029/gm100p0045] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Neal CR, Mahoney JJ, Kroenke LW, Duncan RA, Petterson MG. The Ontong Java Plateau. LARGE IGNEOUS PROVINCES: CONTINENTAL, OCEANIC, AND PLANETARY FLOOD VOLCANISM 2013. [DOI: 10.1029/gm100p0183] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Wolfe CJ, Th. Bjarnason I, VanDecar JC, Solomon SC. Seismic structure of the Iceland mantle plume. Nature 1997. [DOI: 10.1038/385245a0] [Citation(s) in RCA: 388] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Operto S, Charvis P. Deep structure of the southern Kerguelen Plateau (southern Indian Ocean) from ocean bottom seismometer wide-angle seismic data. ACTA ACUST UNITED AC 1996. [DOI: 10.1029/96jb01758] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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White RS, Minshull TA, Richardson KR, Smallwood JR, Staples RK, McBride JH, Maguire PKH, Brandsdóttir B, Menke W. Seismic images of crust beneath Iceland contribute to long-standing debate. ACTA ACUST UNITED AC 1996. [DOI: 10.1029/96eo00134] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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