. Bulletin . de 600 feet north of La Pita. Among slides of this type may be classed that which occurred nearthe division office. Empire. It was due to a fairly large fault whichtrends across the canal and has considerably sheared the rocks on bothsides of the cut. Because of the higher slope more shding occurredon the west than on the other side (PL XXIX). Here the crushedbasaltic rock which forms the ridge on which the office stands (build-ing near left side of PL XXIX) gradually slid on a steep, sUckensidedslope of clay and sheared rock, letting about 278,000 cubic yards ofmaterial into the
. Bulletin . de 600 feet north of La Pita. Among slides of this type may be classed that which occurred nearthe division office. Empire. It was due to a fairly large fault whichtrends across the canal and has considerably sheared the rocks on bothsides of the cut. Because of the higher slope more shding occurredon the west than on the other side (PL XXIX). Here the crushedbasaltic rock which forms the ridge on which the office stands (build-ing near left side of PL XXIX) gradually slid on a steep, sUckensidedslope of clay and sheared rock, letting about 278,000 cubic yards ofmaterial into the cut. The fault-zone typ^ of slide, unlike the others, occurs in rocks strongenough to stand at a steep slope except that large blocks of themare weakened by diagonal canalward sloping faults, which leave over-hanging parts of large rock masses resting insecurely against shpperyfault-zone material. Slides of this character were not common. Theonly remedy for them was to lessen the slopes in the vicinity of the.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
