#taburiente

Caldera del Taburiente

yo poeta declaro | poem by Agustín Millares | music, Juan Carlos Senante

#La Palma

2020. Just now in front of #taburiente #volcanic #caldera. It’s no possible trekking inside, because of high risk of #wildfire. #lapalma #lapalmaisland #spain #landscapephotography #travelphography #travel 📷 #panasonicg9 #lumixg9 #lumix #g9 #olympus1240pro (en Parque nacional de la Caldera de Taburiente) https://www.instagram.com/p/CESc9DgJjGz/?igshid=bc7xw63qmmj5

Today we travelled to the highest place on #LaPalma Palma the Roque De Las Muchachos, from here we had amazing views down into the #Taburiente caldera, of #Benjando and #CumbreViejo Veijo #volcanoes It was a great summary of our time on the island and we were able to recap all the islands formation stories. When then had lunch in Santa Cruz and took the afternoon ferry to Tenerife. (at Roque De Las Muchachos, La Palma) https://www.instagram.com/p/B6BRfuZJn34/?igshid=1vigcuq9v128o

Yesterday was our first day on #LaPalma, the most volcanically active of the #CanaryIslands. The initial stop was the #Taburiente #Caldera National Park Visitor Centre. Here there is an excellent 3D model of the island and #geological display. After explaining the geological history of the island, we moved on to our first stop the Mirador de la Cumbrecita where we were able to look down into the Taburienta Caldera (pic7). This arena plays an important role in the History of Geology. Firstly, it was where the term caldera was first coined, in 1815 by Leopold von Buch. He believed it was a “Crater of Elevation” and the #lavas had been precipitated on the sea floor (the theory of #Neptunism). In 1854 Charles Lyell reinterpreted the caldera as an erosional caldera and later went on to debunk Neptunism showing that lavas come from volcanoes (#Plutonism). However what Charles Lyell missed is that not all the walls of the crater are the same age. The northern and western walls, formed when a giant landslide removed part of the island, and soon after this a new volcano #Bejando formed on top of the debris avalanche, forming the southern wall of the caldera. Pic 9 shows the vertical scarp wall of the landslide. Pic 8 shows on the left the landslide scarp wall and on the right part of Bejando volcano. After lunch we moved to the base of the caldera (Barranco de las Angustias). The rocks become of deeper marine origin and more metamorphosed as you progress up the Barranco. Initially sub marine volcanic breccias are present (pic 4), these are followed by shallow water pillow lavas (pics 1&2), followed by deep water pillows, eventually gabbro that formed in the magma chamber of the seamount is reached (pic 6). The rocks are metamorphosed by hydrothermal processes up to greenschist facies and contain epidote and chlorite (pic 3). The #rocks are also cut by two different sets of dykes (pic 4). The #dykes that fed the seamount are now horizontal because they have been uplifted and tilted, while the dykes that fed the later subaerial volcano are vertical. The concentration of dykes increases up the Barranco and eventually becomes 100% of the rock. (at Parque nacional de la Caldera de Taburiente) https://www.instagram.com/p/B58lzUnJMzf/?igshid=1a54xa4yrwgj8