Fossil beaches as evidence for significant uplift of Tenerife, Canary Islands

Kröchert, J.; Maurer, H.; Buchner, E.

doi:10.1016/j.jafrearsci.2008.01.005

Cited by 19 publications

(24 citation statements)

References 40 publications

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“…At the current shield‐building stage in El Hierro, we also cannot rule out that the detected reservoirs may be more ephemeral and solidify completely at depth, thus confirming part of the proposed active magmatic underplating beneath Canary Islands volcanoes [ Dañobeitia and Canales , ; Lodge et al ., ]. Thus, the magmatic underplating process could explain the observed rates of island uplift, as seen, e.g., at La Palma [ Staudigel and Schmincke , ; Hildenbrand et al ., ] and Tenerife [ Kroechert et al ., ]. Since the end of the eruption, several episodes of renewed seismicity occurred in June‐July 2011, September 2011, and December 2011 to January 2012 (http://www.ign.es).…”

Section: Discussionmentioning

confidence: 99%

Magma storage and migration associated with the 2011–2012 El Hierro eruption: Implications for crustal magmatic systems at oceanic island volcanoes

et al. 2013

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Starting in July 2011, anomalous seismicity was observed at El Hierro Island, a young oceanic island volcano. On 12 October 2011, the process led to the beginning of a submarine NW‐SE fissural eruption at ~15 km from the initial earthquake loci, indicative of significant lateral magma migration. Here we conduct a multifrequency, multisensor interferometric analysis of spaceborne radar images acquired using three different satellite systems (RADARSAT‐2, ENVISAT, and COSMO‐SkyMed (Constellation of Small Satellites for Mediterranean Basin Observation)). The data fully captures both the pre‐eruptive and coeruptive phases. Elastic modeling of the ground deformation is employed to constrain the dynamics associated with the magmatic activity. This study represents the first geodetically constrained active magmatic plumbing system model for any of the Canary Islands volcanoes, and one of the few examples of submarine volcanic activity to date. Geodetic results reveal two spatially distinct shallow (crustal) magma reservoirs, a deeper central source (9.5 ± 4.0 km), and a shallower magma reservoir at the flank of the southern rift (4.5 ± 2.0 km). The deeper source was recharged, explaining the relatively long basaltic eruption, contributing to the observed island‐wide uplift processes, and validating proposed active magma underplating. The shallowest source may be an incipient reservoir that facilitates fractional crystallization as observed at other Canary Islands. Data from this eruption supports a relationship between the depth of the shallow crustal magmatic systems and the long‐term magma supply rate and oceanic lithospheric age. Such a relationship implies that a factor controlling the existence/depth of shallow (crustal) magmatic systems in oceanic island volcanoes is the lithosphere thermomechanical behavior.

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Section: Discussionmentioning

confidence: 99%

Magma storage and migration associated with the 2011–2012 El Hierro eruption: Implications for crustal magmatic systems at oceanic island volcanoes

et al. 2013

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“…In contrast, most of the islands show significant uplift histories with outcropping seamount volcanoes in La Palma and Fuerteventura (Hoernle and Carracedo, 2009), but whether it reflects endogenous growth or regional uplift has not been resolved yet. On shorter time scales, in Lanzarote, Fuerteventura, and Tenerife there are also Quaternary-dated raised beaches at different elevations (Zazo et al, 2002;Kröchert et al, 2008). 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 3.…”

Section: And the M62 1959mentioning

confidence: 99%

An Overview of Geodetic Volcano Research in the Canary Islands

Fernández

González

Camacho

et al. 2014

Pure Appl. Geophys.

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“…1). Although no significant subsidence or uplift has been evidenced at the island scale over the last~2 Myr (e.g., Carracedo, 1999;Ablay and Hurlimann, 2000;Meco et al, 2007;Krochert et al, 2008), the eruptive complex is particularly unstable and has experienced at least three major flank collapse episodes within the last 1 Myr (Navarro and Coello, 1989;Ancochea et al, 1990;Teide Group, 1997;Cantagrel et al, 1999;Masson et al, 2002). The most recent event, generally termed the Icod landslide, truncated the northern flank of LCV (Figs.…”

Section: Geological Backgroundmentioning

confidence: 99%