Engineering Geology

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E n g i n e e r i n g G e o l o g y Figure 3.28 Terminal moraine, Tasman Glacier, South Island, New Zealand. a curved outline impressed upon them by the lobate nature of the snout of the ice. They are usually discontinuous, being interrupted where streams of melt water issue from the glacier. Frequently, a series of terminal moraines may be found traversing a valley, the farthest downvalley marking the point of maximum extension of the ice, the others indicating pauses in glacial retreat. The latter types are called recessional moraines. Ground moraines and terminal moraines are the two principal types of moraines deposited by ice sheets that spread over lowland areas. In lowland areas, the terminal moraines of ice sheets may rise to heights of some 60 m. In plan, they commonly form a series of crescents, each crescent corresponding to a lobe at the snout of the ice. If copious amounts of melt water drain from the ice front, then morainic material is washed away, and hence a terminal moraine either does not develop, or if it does, is of inconspicuous dimension. Fluvio-Glacial Deposits; Stratified Drift Stratified deposits of drift often are subdivided into two categories, namely, those deposits that accumulate beyond the limits of the ice, forming in streams, lakes or seas, and those deposits that develop in contact with the ice. The former types are referred to as pro-glacial deposits, and the latter are termed ice-contact deposits. 120
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Engineering Geology
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Engineering Geology Second Edition
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Preface As noted in the Preface to
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Contents 1. Rock Types and Stratigr
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Contents Field Instrumentation 344
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Chapter 1 Rock Types and Stratigrap
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Chapter 1 several tens of metres bu
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Chapter 1 Figure 1.4 Distribution o
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Chapter 1 Figure 1.5 Lapilli near C
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Chapter 1 Figure 1.7 (a) Ropy or pa
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Chapter 1 Figure 1.8 Columnar joint
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Chapter 1 Figure 1.9 Pegmatite vein
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Chapter 1 Figure 1.10 Thin section
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Chapter 1 Figure 1.11 An old quarry
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Chapter 1 a b Figure 1.13 (a) Gneis
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Chapter 1 and the types of country
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Chapter 1 A variety of minerals suc
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Chapter 1 metasomatic activity is c
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Chapter 1 derived by partial intras
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Chapter 1 character (are they irreg
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Chapter 1 the top. Individual grade
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Chapter 1 Figure 1.20 Thin section
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Chapter 1 Montmorillonite [(Mg,Al)
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Chapter 1 Figure 1.22 Salt teepees
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Chapter 1 The extent and regularity
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Chapter 1 the lowest bed in the upp
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Table 1.1. The geological timescale
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Chapter 1 The principal way in whic
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Chapter 2 Geological Structures The
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Chapter 2 (b) Figure 2.2 (a) Block
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Chapter 2 (b) Figure 2.4 (a) Types
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Chapter 2 Figure 2.6 Chevron fold i
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Chapter 2 direction of extension. T
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Chapter 2 Figure 2.9 Types of fault
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Chapter 2 Figure 2.11 (a) Repetitio
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Chapter 2 side of a fault are of di
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Chapter 2 Figure 2.14 Geometric ori
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Chapter 2 As joints represent surfa
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Chapter 2 (several metres). The int
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Chapter 2 Strength of Discontinuous
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Chapter 2 Table 2.5. Classification
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73 Figure 2.17 Discontinuity survey
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Chapter 2 Figure 2.19 Representatio
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Chapter 3 Surface Processes All lan
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Chapter 3 humid regions more than d
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Chapter 3 Figure 3.3 Honeycomb weat
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Chapter 3 less soluble than limesto
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Chapter 3 Figure 3.4 The slake-dura
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Chapter 3 Because weathering brings
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Chapter 3 Figure 3.6 Approaches to
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Chapter 3 Figure 3.7 Valley bulging
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Chapter 3 Internal slides are usual
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Page 264: Figure 3.29 Block diagram of a glac
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E n g i n e e r i n g G e o l o g y
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162 Table 4.4. Relative values of p
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248 Table 5.21. Some properties of
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252 Table 5.22. Rock type classific
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272 Table 5.33. Some physical prope
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274 Table 5.34. Geomechanical prope
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280 Table 6.1. Some properties of B
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282 Table 6.2. Some properties of B
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372 Table 7.7a. Excerpts from the e
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374 Table 7.7b. Key to the engineer
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390 Table 8.1. Modified Mercalli Sc
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412 Figure 8.15 (a) (b) (a) Rip-rap
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488 Table 9.4. The rock mass rating
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490 Table 9.6. Classification of in
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532 Table 9.8. Typical compaction c
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I n d e x coastal protection, 410,
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I n d e x grout, 526, 548 groutabil
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I n d e x rebound, 513 recumbent fo
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