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Long-term (17 Ma) turbidite record of the timing and frequency of large flank collapses of the Canary Islands

Long-term (17 Ma) turbidite record of the timing and frequency of large flank collapses of the Canary Islands
Long-term (17 Ma) turbidite record of the timing and frequency of large flank collapses of the Canary Islands
Volcaniclastic turbidites on the Madeira Abyssal Plain provide a record of large-volume volcanic island flank collapses from the Canary Islands. This long-term record spans 17 Ma, and comprises 125 volcaniclastic beds. Determining the timing, provenance and volumes of these turbidites provides key information about the occurrence of mass wasting from the Canary Islands, especially the western islands of Tenerife, La Palma and El Hierro. These turbidite records demonstrate that landslides often coincide with protracted periods of volcanic edifice growth, suggesting that loading of the volcanic edifices may be a key preconditioning factor for landslide triggers. Furthermore, the last large-volume failures from Tenerife coincide with explosive volcanism at the end of eruptive cycles. Many large-volume Canary Island landslides also occurred during periods of warmer and wetter climates associated with sea-level rise and subsequent highstand. However, these turbidites are not serially dependent and any association with climate or sea level change is not statistically significant.
Canary Islands, landslides, turbidites
1525-2027
3322-3345
Hunt, J.E.
43fd3144-04cd-43d9-b341-b70f2a03bf91
Talling, P.J.
1cbac5ec-a9f8-4868-94fe-6203f30b47cf
Clare, M.A.
2b5fe9d9-a4fa-4c54-b7ed-337d15b1c4cf
Jarvis, I.
695bdaeb-0e98-4e86-b203-b27caaf845ab
Wynn, R.B.
72ccd765-9240-45f8-9951-4552b497475a
Hunt, J.E.
43fd3144-04cd-43d9-b341-b70f2a03bf91
Talling, P.J.
1cbac5ec-a9f8-4868-94fe-6203f30b47cf
Clare, M.A.
2b5fe9d9-a4fa-4c54-b7ed-337d15b1c4cf
Jarvis, I.
695bdaeb-0e98-4e86-b203-b27caaf845ab
Wynn, R.B.
72ccd765-9240-45f8-9951-4552b497475a

Hunt, J.E., Talling, P.J., Clare, M.A., Jarvis, I. and Wynn, R.B. (2014) Long-term (17 Ma) turbidite record of the timing and frequency of large flank collapses of the Canary Islands. Geochemistry, Geophysics, Geosystems, 15 (8), 3322-3345. (doi:10.1002/2014GC005232).

Record type: Article

Abstract

Volcaniclastic turbidites on the Madeira Abyssal Plain provide a record of large-volume volcanic island flank collapses from the Canary Islands. This long-term record spans 17 Ma, and comprises 125 volcaniclastic beds. Determining the timing, provenance and volumes of these turbidites provides key information about the occurrence of mass wasting from the Canary Islands, especially the western islands of Tenerife, La Palma and El Hierro. These turbidite records demonstrate that landslides often coincide with protracted periods of volcanic edifice growth, suggesting that loading of the volcanic edifices may be a key preconditioning factor for landslide triggers. Furthermore, the last large-volume failures from Tenerife coincide with explosive volcanism at the end of eruptive cycles. Many large-volume Canary Island landslides also occurred during periods of warmer and wetter climates associated with sea-level rise and subsequent highstand. However, these turbidites are not serially dependent and any association with climate or sea level change is not statistically significant.

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More information

Accepted/In Press date: July 2014
Published date: August 2014
Keywords: Canary Islands, landslides, turbidites
Organisations: Marine Geoscience

Identifiers

Local EPrints ID: 368221
URI: http://eprints.soton.ac.uk/id/eprint/368221
ISSN: 1525-2027
PURE UUID: 7ca65f31-fb59-49d7-a187-4cd371f4a5cb

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Date deposited: 21 Aug 2014 09:32
Last modified: 14 Mar 2024 17:44

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Contributors

Author: J.E. Hunt
Author: P.J. Talling
Author: M.A. Clare
Author: I. Jarvis
Author: R.B. Wynn

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