Slope failures on the flanks of the western Canary Islands

Masson, Douglas G.; Watts, A. B.; Gee, M.J.R.; Úrgeles, Roger; Mitchell, Neil C.; Bas, Tim Le; Canals, Miquel

doi:10.1016/s0012-8252(01)00069-1

Cited by 431 publications

(435 citation statements)

References 49 publications

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“…The paper demonstrates the importance of the Agadir Canyon in funnelling the majority of turbidites in the studied sequence, which originates from the Moroccan continental margin with occasional contributions from the volcanic Canary and Madeira archipelagos. The causal and genetic link between two large-volume turbidities and giant landslides on the flanks of the western Canary Islands confirms earlier interpretations (e.g., Watts and Masson 1995;Masson et al 2002). Evidences indicate that one of the volcaniclastic turbidities, named AB14, passed 'upslope' for over 400 km along the low-gradient floor of the Agadir Basin traversing a seafloor ridge before reaching the more distant Seine Abyssal Plain.…”

Section: This Volumesupporting

confidence: 80%

Results from the European Deep Ocean Margins Research Training Network

Canals

Mol

2009

Int J Earth Sci (Geol Rundsch)

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Section: This Volumesupporting

confidence: 80%

Results from the European Deep Ocean Margins Research Training Network

Canals

Mol

2009

Int J Earth Sci (Geol Rundsch)

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“…Looking at the coincidence of both features we could attribute the origin of the scarp entirely to the landslide process of the Güimar Debris Avalanche, being a continuation offshore of the eastern sidewall of this avalanche on land. Such an interpretation was suggested by Masson et al (2002) for the sidewalls of El Golfo Debris Avalanche on El Hierro island. But a sedimentary origin for the submarine scarp without involving structural process can be argued.…”

Section: South Sectormentioning

confidence: 70%

“…One of these aprons is located to the NW of the massif, at the end of a channel that limits the Anaga offshore structure to the west and has been recognised and studied in previous works as the 'Orotava Debris Avalanche' (ODA) (Teide Group, 1997;Watts and Masson, 2001;Masson et al, 2002).…”

Section: North Sectormentioning

confidence: 99%

“…The other lobe, called 'Anaga Debris Avalanche' (ADA), is the easternmost collapse deposit of Tenerife and was identified by Masson et al (2002) based on the general bathymetric map, although its morphology was neither mapped nor completely studied due to the lack of detailed data in this area.…”

Section: North Sectormentioning

confidence: 99%

“…But a sedimentary origin for the submarine scarp without involving structural process can be argued. Observation of the relations between the amphitheatres and the scarps in other debris avalanches of the Canary Islands, such as the ones in El Hierro, La Palma, Tenerife and Gran Canaria islands, reveals that usually the head amphitheatre of the debris avalanche is aligned normal to the downslope direction of movement of the avalanche (for references see Masson et al, 2002;Acosta et al, this issue). Here the offshore scarp is not aligned with the direction of the onshore scarp, but instead is deviated from that direction by 55 • to the north (Figure 7).…”

Section: South Sectormentioning

confidence: 99%

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Morphological and structural analysis in the Anaga offshore massif, Canary Islands: fractures and debris avalanches relationships

Llanes¹,

Muñoz²,

Muñoz-Martı́n³

et al.

Geophysics of the Canary Islands

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As part of the 'National Hydrographic and Oceanographic Research Plan for the Spanish Exclusive Economic Zone', multibeam bathymetry and seismic reflection profiles were obtained in the Canary Islands aboard the R/V Hespérides. The submarine flanks of the Anaga offshore extension of Tenerife Island are here studied to analyze its geomorphology. In the north sector of the Anaga submarine massif, the extension of the Anaga Debris Avalanche has been mapped for the first time, and a volume of 36 km 3 was calculated. The relationship between the Anaga and Orotava Debris Avalanches is also described. Faulting has been recognized as a key process for the occurrence of debris avalanches and the growth of volcanic lineaments. Moreover, faulting affects previous structures and the channelling of debris flows. Structural analysis shows the typical radial pattern of an oceanic island. In addition, a NE-SW dominant direction of faulting was obtained, consistent with the Tenerife Island structural trend seen in the Anaga Massif and Cordillera Dorsal. NW-SE and E-W are two other main trends seen in the area. Special interest is manifest in two long faults: 'Santa Cruz Fault' bounds the southern edge of Anaga offshore Massif with a length of 50 km and a direction that changes from NE-SW to almost E-W. The Güimar Debris Avalanche was probably channeled by this fault. The 'Guayotá Fault' was recognized in several seismic profiles with a N-S direction that changes towards NW-SE at its southern end. This fault affects the more recent sediments with a vertical offset of 25-30 m, along 60 km. It has been interpreted as a transpressive strike-slip fault.

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

Hunt

Talling

Clare

et al. 2014

Geochem Geophys Geosyst

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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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Slope failures on the flanks of the western Canary Islands

Cited by 431 publications

References 49 publications

Results from the European Deep Ocean Margins Research Training Network

Results from the European Deep Ocean Margins Research Training Network

Morphological and structural analysis in the Anaga offshore massif, Canary Islands: fractures and debris avalanches relationships

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

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