... across the SDF and the western sector of the island is inferred to be a potential weakness zone for further instability episodes. This study reports new data of fracture density using remote sensing imagery, across within and outside the rift zone, to identify areas of damage that could reduce...

... Abstract In the Mediterranean area, cliff slopes represent widespread high-risk landforms as they are highly frequented touristic places often interested by landslide processes. Malta represents a significant case study as several cliffs located all around the island are involved...

... Abstract Ischia Island (Italy) experienced slope instabilities during the Holocene that occurred at different scales, from shallow mass movements up to large rock and debris avalanches. These events were strictly related to volcano-tectonic activity and the presence of a well-developed...

.... In the present study the stability of some of the most representative and visited tunnels in Galapagos and Lanzarote is assessed. Special emphasis is done in show caves in the islands of Santa Cruz and Isabela and the Canary island of Lanzarote. It has been used an empirical methodology – internationally...

... cliffs in several islands, properties of Ryukyu limestone and their rock mass characterization are presented. In the final part, the results of the analyses by the proposed stability assessment method are compared with actual observations and discussed. This study also yields some information how...

.... The Sierra de Tramuntana, situated to the north- west of the island of Mallorca, is the largest mountain chain of the island, with a surface between 800 and 1100 km2, and with vertical drops that range from sea level up to a maximum height of 1445 meters (the Puig Major de Son Torrella). It has about 90 km...

... Current (DC) electrical survey and a seismic surface wave survey to investigate the underground structures of the beachrock in Yagaji Island, Okinawa, Japan. In order to estimate the effectiveness of the geophysical surveys, we conducted laboratory tests to measure the resistivity, the shear wave velocity...

...723 Rock Engineering in Difficult Ground Conditions Soft Rocks and Karst Vrkljan (ed) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-80481-3 Protection of Lake Vrana natural phenomenon on the Island of Cres N. O ani Faculty of Civil Engineering, University of Rijeka, Rijeka, Croatia...

... Over the last few years a revision of the geological mapping of Madeira Island has been undertaken. The island rises above a vast underwater submarine plain in the midst of the African Plate, forming a volcanic massif about 5,5km high, of which only a third is above sea level. Its irregular...

... Throughout the history of Madeira, mass movements have claimed hundreds of victims and caused material damage to the population of the island. Landslides, from the most rapid debris flows and rock falls to the slowest slides and creep movements in talus deposits, are common phenomena. We...

... adopted in the project and indicates some recommendations. 1. INTRODUCTION The sustained development of Madeira Island has been, from among other factors, related to the rational development of its water resources. These are the more important and vital as the underground resources are scarce...

... Tunnelling experiences obtained from projects in Madeira, Iceland and the Faroe Islands will be presented in this paper. These experiences include such as tunnelling conditions in general, support and grouting philosophy and also various types of problems encountered and the solutions found...

... During last years, the authors of this paper have been developing field works focusing essentially on the Volcano-Stratigraphy, Geomorphology, and Structural Geology of Madeira Island. These preliminary studies have shown that the importance of the tectonic faulting of Madeira was clearly...

... In the ends of the decade of eighty in "Rua da Rocha dos Campos, Água d'' Alto, Vila Franca do Campo", Island of S. Miguel, they occurred several overthrown of slopes, turning very unstable an area of old urban occupation. The studies developed in the sequence of those events, had as objective...

... of basaltic hyaloclastites and formation of iron-rich gels and clay-like nanopha- ses resulting from olivine oxidation are considered. Representative examples from Santiago Island are reported. 1. INTRODUCTION Volcanic rocks display a variety of textures ranging from very compact mineral assem- blages...

... Upstream Oil & Gas resistance porosity Madeira archipelago classification cantaria mole mechanical resistance lapilli tuff structural geology test specimen characterisation mineral Reservoir Characterization cantaria rija Island natural stone NATURAL STONE FROM...