Continent–ocean-transitions: Review, and a new tectono-magmatic model of the Vøring Plateau, NE Atlantic

Mjelde, Rolf; Raum, T.; Murai, Yoshio; Takanami, Tetsuo

doi:10.1016/j.jog.2006.09.013

Cited by 61 publications

(50 citation statements)

References 115 publications

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“…(Fig. A C C E P T E D M A N U S C R I P T 4d). The concave-down geometry of the volcanics forming the SDR has sometimes been explained by subsidence models (Mutter et al, 1982;Hinz, 1981;Mutter, 1985), but alternatively, onshore and offshore investigations have pointed out that SDR are synmagmatic roll-over flexures controlled by major continentward dipping normal faults (Brooks & Nielsen, 1982;Planke et al, 2000;Gernigon et al, 2004Gernigon et al, , 2006Geoffroy et al, 2001, Geoffroy, 2001Mjelde et al, 2007;Stica et al, 2014;Pindell et al, 2014).…”

Section: Iiaa Observationsmentioning

confidence: 99%

Rifted margins: Ductile deformation, boudinage, continentward-dipping normal faults and the role of the weak lower crust

et al. 2018

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, Rifted margins: Ductile deformation, boudinage, continentward-dipping normal faults and the role of the weak lower crust, (2016), doi: 10.1016/j.gr.2017.04.030 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T Abstract:The

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Section: Iiaa Observationsmentioning

confidence: 99%

Rifted margins: Ductile deformation, boudinage, continentward-dipping normal faults and the role of the weak lower crust

et al. 2018

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“…Additions to the continental crust are also made at volcanic rifted margins that form when continents rift apart (Figure 3). Break-up is often associated with eruption of thick piles of mostly mafic lava at the continent-ocean crustal boundary (Menzies et al 2002;Mjelde et al 2007). This mafic crust requires further processing as outlined in Figure 6.…”

Section: Additions (Au)mentioning

confidence: 99%

Yin and yang of continental crust creation and destruction by plate tectonic processes

Stern

Scholl

2010

International Geology Review

202

107

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Earth's continental crust today is both created and destroyed by plate tectonic processes, a balance that is encapsulated by the traditional Chinese concept of yin-yang, whereby dualities act in concert as well as in opposition. Yin-yang conceptualizations of crustal growth and destruction are mostly related to plate tectonics; both occur mostly at subduction zones, by arc magmatic creation and by subduction removal. Crust is also created and destroyed by processes unrelated to plate tectonics, including losses by lower crust foundering and additions at hotspots. At present, creation and destruction of continental crust is either in balance (∼3.2 km 3 /year, or 3.2 AU) or more crust is being destroyed than created; the uncertainty comes from unknown deep losses of continental crust at collision zones and due to lower crustal foundering. The yinyang creation-destruction balance changes over a supercontinent cycle, with crustal growth being greatest during supercontinent break-up due to high magmatic flux at new arcs and crustal destruction being greatest during supercontinent amalgamation due to subduction of continental material and increased sediment flux due to orogenic uplift. These conclusions challenge the widely held view that continental crust volume has increased over time due to plate tectonic activity; it is just as likely that this volume has decreased.

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“…Vøring 99 line AB Mjelde et al (2005Mjelde et al ( , 2007. Note: the line is not labelled on the map (Fig.…”

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confidence: 99%

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

Funck

Geissler

Kimbell

et al. 2016

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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.Gold Open Access: This article is published under the terms of the CC-BY 3.0 license.

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Continent–ocean-transitions: Review, and a new tectono-magmatic model of the Vøring Plateau, NE Atlantic

Cited by 61 publications

References 115 publications

Rifted margins: Ductile deformation, boudinage, continentward-dipping normal faults and the role of the weak lower crust

Rifted margins: Ductile deformation, boudinage, continentward-dipping normal faults and the role of the weak lower crust

Yin and yang of continental crust creation and destruction by plate tectonic processes

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

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