Payún Volcano is a Quaternary fissurai edifice located in the southern part of tie Mendoza Province (Argentina) and belonging to an Andean back-arc extensional basin. The volcano eastern portion is covered by a basaltic lava field composed of several very long lava flows, two of which advanced over more than 170 km from their fissurai feeding vents. These two gigantic flows covered most of the distance over the nearly flat surface of the Pampean foreland, moving on a 0.3° slope. Since these lava flows are the longest ever documented on our Planet, a full understanding of the processes leading to their emplacement might result in a revision of the current theories on exceptionally long channelized lava flows, both on Earth and on terrestrial planets.
Pasquarè, G., Bistacchi, A., Mottana, A. (2005). Gigantic individual lava flows in the andean foothill near Malargue (Argentina). ATTI DELLA ACCADEMIA NAZIONALE DEI LINCEI. RENDICONTI LINCEI. SCIENZE FISICHE E NATURALI, 16(3), 127-135 [10.1007/BF02904761].
Gigantic individual lava flows in the andean foothill near Malargue (Argentina)
BISTACCHI, ANDREA LUIGI PAOLO;
2005
Abstract
Payún Volcano is a Quaternary fissurai edifice located in the southern part of tie Mendoza Province (Argentina) and belonging to an Andean back-arc extensional basin. The volcano eastern portion is covered by a basaltic lava field composed of several very long lava flows, two of which advanced over more than 170 km from their fissurai feeding vents. These two gigantic flows covered most of the distance over the nearly flat surface of the Pampean foreland, moving on a 0.3° slope. Since these lava flows are the longest ever documented on our Planet, a full understanding of the processes leading to their emplacement might result in a revision of the current theories on exceptionally long channelized lava flows, both on Earth and on terrestrial planets.
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