Figure 1. Extent of widespread Osceola Mudflow and Electron mudflow deposits from Mount Rainier. These deposits contain hydrothermally derived clay minerals and likely originated from flank collapses. Modified from Scott and Vallance (1995) and Vallance and Scott (1997). ABSTRACT Catastrophic collapses of steep volcano flanks threaten many populated regions, and understanding factors that promo...

After several visits to the area rock workings were found on the southern slope of a high dolerite ridge known locally as "Billy Blue". They were ona large sand-stone rock measuring approximately sixty yards long and four yards wide. It faced west and was on the eastern bank of a creek bed which, though normally dry, has a permanent soakage at its mouth some fifty yards below the carved rock. A...

by Hoek et al. 2002 and which is related to blasting, caused damage and stress relief; it may also be considered in the estimate of rock mass modulus from intact rock modulus. The recommendations of “D” values for tunnel and slope applications were provided by Hoek et al. 2002 . Unfortunately, no guidelines were provided for deep foundation application. The discussers related the disturbance fa...

The explosion process of explosives in a borehole applies a very high pressure on its surrounding rock media. This process can initiate and propagate rock fractures, and finally, may result in the rock fragmentation. Rock fragmentation is mainly caused by the propagation of inherent pre-existing fractures of the rock mass and also from the extension of the newly formed cracks within the intact ...

abstract spacing between check dams depends on the stream bed slope, effective height of check dams and slope of deposited sediments behind the check dams. the slope of deposited sediments is more important than the other two factors because of complications in the way of its occurrence and its measurement after several years of dam construction. this research presents the effective factors aff...

pedogenesis and clay mineralogy of soils and rock samples were studied in a transect of calcareous, gypsiferous, saline soils and sediments of bakhtegan lake bank in southern iran. the main objectives of study were to determine the occurrence of clay minerals and factors controlling their distribution pattern and relative abundance in soils and parent materials. the soil parent material is high...