BGS Data Catalogue
Continental extension leading to breakup: determining the 3D structure of the west Galicia rifted margin (NERC Grant NE/E015883/1)
The data result from a cooperative project between the U.K., U.S., Germany, Spain, and Portugal. This 2013 seismic experiment surveyed the Galicia Bank region off Iberia with the RV Marcus Langseth. The goal was to collect 3D seismic reflection data specifically designed to reveal the 3D structures generated during the rifting of the Galicia margin and to study the rifted continental to oceanic crust transition in the Deep Galicia Margin west of Spain. The data correspond to a 68.5km x 20 km volume down to 14s TWT with a nominal inline spacing of 6.25 m and a cross-line spacing of 50m, including 800 inlines and 5500 cross-lines. References Bayrakci, G., Minshull, T.A., Sawyer, D.S., Reston, T.J., Klaeschen, D., Papenberg, C., Ranero, C., Bull, J.M., Davy, R.G., Shillington, D.J., Perez-Gussinye, M., and Morgan, J.K., 2016, Fault-controlled hydration of the upper mantle during continental rifting, Nature Geoscience, vol. 9, p. 3840388, DOI: 10.1038/ngeo2671. URL: http://www.nature.com/ngeo/journal/v9/n5/full/ngeo2671.html R. G. Davy, J. V. Morgan, T. A. Minshull, G. Bayrakci, J. M. Bull, D. Klaeschen, T. J. Reston, D. S. Sawyer, G. Lymer, D. Cresswell, 2017. Resolving the fine-scale velocity structure of continental hyperextension at the Deep Galicia Margin using full-waveform inversion. Geophysical Journal International, Volume 212, Issue 1, 1 January 2018, Pages 244–263, https://doi.org/10.1093/gji/ggx415 C.Nur Schuba, Gary G.Gray, Julia K.Morgan, Dale S.Sawyer, Donna J. Shillington, Tim J.Reston, Jonathan M.Bull, Brian E.Jordan, 2018. A low-angle detachment fault revealed: Three-dimensional images of the S-reflector fault zone along the Galicia passive margin. Earth and Planetary Science Letters, 492, (2018), 232–238, https://doi.org/10.1016/j.epsl.2018.04.012
Default
Identification info
- Metadata Language
- English (en)
- Dataset Reference Date ()
- 2018-07-03
University of Birmingham
-Gael Lymer
(School of Geography, Earth and Environmental Sciences
)Birmingham
,B15 2TT
,University of Birmingham
-Professor Timothy Reston
(School of Geography, Earth and Environmental Sciences
)Birmingham
,B15 2TT
,- Maintenance and update frequency
- notApplicable
- GEMET - INSPIRE themes
- Keywords
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NERC_DDC
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- Limitations on Public Access
- otherRestrictions
- Other constraints
- no limitations
- Other constraints
- The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
- Use constraints
- otherRestrictions
- Other constraints
-
The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
- Other constraints
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Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
- Topic category
-
- Geoscientific information
))
- Begin date
- 2013-06-01
- End date
- 2013-09-01
Spatial Reference System
Distribution Information
- Data format
-
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SGY files
()
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- Resource Locator
- http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item111509
- Resource Locator
- http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item111509
- Quality Scope
- dataset
- Other
-
dataset
Report
- Dataset Reference Date ()
- 2011
- Explanation
-
See the referenced specification
- Degree
Report
- Dataset Reference Date ()
- 2010-12-08
- Explanation
-
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Degree
- Statement
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Data were collected in 2013 with the RV Marcus Langseth, towing two 3300 cu in tuned airgun arrays, firing alternately every 37.5 m. Data were received by 4 digital hydrophone streamers, each 6 km in length, containing 480 channels and towed with a 200 m spacing. Processing carried out by Repsol under our supervision consisted of editing, despiking and low cut filtering, wavelet shaping including zero phase conversion, multiple suppression (surface related multiple elimination and radon demultiple), static correction to correct for variation in water velocity during the experiment, offset plane Fourier regularisation and binning to 12.5 m inline and 25 m crossline spacing, 3D prestack time migration after tomographic and residual moveout velocity analysis, and bandpass filtering. Two dataset were produced, one with preserved relative amplitudes and one with amplitude balanced version.
Metadata
- File identifier
- 70b68b34-980b-5f0d-e054-002128a47908 XML
- Metadata Language
- English (en)
- Resource type
- dataset
- Metadata Date
- 2023-01-23
- Metadata standard name
- UK GEMINI
- Metadata standard version
-
2.3
British Geological Survey
Environmental Science Centre,Keyworth
,NOTTINGHAM
,NOTTINGHAMSHIRE
,NG12 5GG
,United Kingdom
