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Keywords: lava flow
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-145
...- tinguished as representative of the simplified geologi- cal model of Tenerife island flanks for geomechanical purposes: Forming the flanks of the island: 1 Lava flows (60%) and autoclastic breccias (40 2 Lava flows (70%) and autoclastic breccias (30 3a Altered lava flows (90%) and pyroclastic deposits (10...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-020
... and low lateral erosion, steep longitudinal profiles and absence of important stream captures. The valleys are usually deep, narrow and with U shaped in cross profiles, the slopes are composed by steep segments cut in weak pyroclastic materials, separated by near vertical scarps in lava flows. The streams...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-022
...). Posterosional volcanism, mainly cider cones, tuff layers ~~d intracanyon lava flows, continued into the Holocene with the last eruptions occurring OOyearsB:P. (Upper Unit) (Geldmacher et al. 2000). It's essentially formed by lavas, ranging in composition from basanites to mugearits, that are cut by significant...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-072
... water inflow, volcanic gases, etc. 2. THE VARIETY OF VOLCANIC ROCKS Effusive products (mostly basic lava flows), explosive deposits (acid and basic pyroclastic fall and flow deposits) and associated sediments, are the most conunon rocks found in the studied regions. Sub aerial basaltic lava flows may...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-088
... masses are a consequence of solidification of crust surface lava flows trough intermittent events that result in superposition of different flows giving rise to relevant discontinuities in the contacts between the flows. These discontinuities assume strong interest for water seepage as a fundamental...

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