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• W3097656475 abstract "&lt;p&gt;Among the variety of earth analogues, what surely stand out are lava tubes.&lt;/p&gt; &lt;p&gt;A lava tube is a type of lava cave formed by a low-viscosity lava flow that can develop 1) forming a continuous and hard crust, which forms a roof above the still flowing lava stream (over-crusting), or 2) slipping between pre-existing lava flows (inflation). The resulting structure constitutes among the most efficient thermal structures on Earth, because of their capacity of thermal insulation isolated lava flows can travel over long distances across lava fields.&lt;/p&gt; &lt;p&gt;Lava tubes, which on Earth are typical features of lava fields encountered in intracontinental plateaus and volcanic-shield islands (slopes &lt;2&amp;#176;, e.g. Hawaii and Canaries), have also been recognised on the surface of other rocky bodies of the Solar System such as Mars and the Moon [1]. Due to the similar characteristics of basaltic volcanism on rocky bodies, it is expected that lava tubes have similar morphologies and origin among them. Only recently it has been possible to perform comparisons between lava tubes on different planetary bodies with implications on the study of planetary volcanology, habitability and astrobiology [2].&lt;/p&gt; &lt;p&gt;Indeed, in the last decade, high-resolution orbital images on planetary bodies like Mars and the Moon offer the possibility of studying the morphology of these structures, detecting them from the recurrent collapses in the pyroduct&amp;#8217;s roof, that shows the presence and the path of the pyroduct itself. The pit chains show characteristics similar to those on Earth: elongated with minor axis representing the width of the tube and with major axis along the flow direction.&lt;/p&gt; &lt;p&gt;The differences in gravity between Earth and the other planetary bodies and its concurrent influence on the effusion rates result in a significant difference in lava tube dimensions, indeed, terrestrial pyroducts tend to generally have a smaller width (10&amp;#8211;30 m) than those on Mars (250&amp;#8211;400 m) and the Moon (500&amp;#8211;1100 m) [3].&lt;/p&gt; &lt;p&gt;In the post-cooling phases, lava tubes are characterized by a near-constant inner temperature and, on other planetary bodies, they might offer natural protection against micrometeorites and solar and cosmic radiations making them ideal locations for future planetary explorations.&lt;/p&gt; &lt;p&gt;Within this framework, studying the largest lava tubes on Earth is of interest as they could represent the best planetary analogues.&lt;/p&gt; &lt;p&gt;In order to employ lava tubes as locations for future explorations, it is important to understand exactly how they form and develop not only during the active phase (flow-phase) but also and more importantly during the post-cooling phase.&lt;/p&gt; &lt;p&gt;Alongside the NW African continental margin (Morocco), is located the &lt;em&gt;Canary Island Seamount Province&lt;/em&gt; (CISP), a magmatic province generated by the extremely slow transit (~8&amp;#8211;10 mm/yr) of the African plate over a hotspot during more than the last 133 Ma [5] and hence represents both long-term and spatially focused volcanic activity over a poorly mobile tectonic plate. For this reason, it constitutes one of the best terrestrial analogues of the Martian one-shell plate volcanism [6]. In the NE region of Lanzarote (Canary Islands) stands &lt;em&gt;La Corona lava tube system&lt;/em&gt; that, with its 7.6 km length and an average width of 30 m [4], is one of the largest volcanic cave complexes on Earth.&amp;#160;&lt;/p&gt; &lt;p&gt;Therefore, the occurrence of volcanism on an almost stationary plate and the impressive dimensions of La Corona lava tube make it one of the most suitable lava tubes for interplanetary analogies.&lt;/p&gt; &lt;p&gt;Different field surveys were conducted over the last two years in order to explore its three-dimensional geometry using 3D laser-scan. These data allowed to place constraints on the tube origin (inflation process rather than over-crusting), the involvement of thermal erosional processes (inferred from characteristic morphologies) and to identify a weak pyroclastic level within the tube which might have favoured the inflated tube inception. Also, the presence of an important amount of secondary mineralisation inside the tube has been very significant in understanding the evolution of the pyroduct in the cooling and post-cooling phases. These secondary mineralisation (mainly sulphates) show an interesting contribution from the Aeolian and marine environment in the latest evolutionary stages of this lava tube.&lt;/p&gt; &lt;p&gt;Studying this exceptional example of terrestrial lava tube will allow to improve our understanding of the formation and evolutional processes giving rise to analogue features on other planetary bodies of the Solar System.&lt;/p&gt; &lt;p&gt;&amp;#160;&lt;/p&gt; &lt;p&gt;&amp;#160;&lt;/p&gt; &lt;p&gt;[1] Haruyama, J. et al. (2012) Trans. JAPAN Soc. Aeronaut. Sp. Sci. Aerosp. Technol. JAPAN 10&lt;/p&gt; &lt;p&gt;[2] Tettamanti C. (2019) Analysis of skylights and lava tubes on Mars, Department of Physics and Astronomy &amp;#8220;Galileo Galilei&quot;, Univerisy of Padova (Italy)&lt;/p&gt; &lt;p&gt;[3] Sauro, F., et al. (2018) 49th Lunar Planet. Sci. Conf. 2018&lt;/p&gt; &lt;p&gt;[4] Carracedo, J. C. et al. (2003) Estud. Geol. &lt;strong&gt;59 &lt;/strong&gt;&lt;/p&gt; &lt;p&gt;[5] van den Bogaard, P. (2013). Sci. Rep. &lt;strong&gt;3 &lt;/strong&gt;&lt;/p&gt; &lt;p&gt;[6] Meyzen, C. M., et al. (2015) Geol. Soc. London, Spec. Publ. &lt;strong&gt;401&lt;/strong&gt;&lt;/p&gt;" @default.
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• W3097656475 date "2020-10-08" @default.
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• W3097656475 title "The importance of the evolutional processes in the study of lava tube analogues: the case of La Corona tube (Lanzarote)" @default.
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