8 msec avogadros number n o 602 x 10 23 mole and

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8 m/sec), Avogadro's number ( N o = 6.02 x 10 23 / mole), and universal gas constant (R = 8.23 joules/(mole)(K°). A comparable table involves numerical data which depend on circumstances such as geographic location and are, therefore, not strictly physical constants. Another table consists of a list of common physical properties which are represented by symbols including letters of the Greek alphabet. These numerical data and material properties form an important component of the language of structural geology. Table of symbols for the structural geologist Symbol Name Units ρ density ML -3 σ stress ML -1 T -2 τ shear stress ML -1 T -2 σ n normal stress ML -1 T -2 ε strain dimensionless [LL -1 ] E Young's Modulus ML -1 T -2 ν Poisson's ratio dimensionless γ Engineering shear strain dimensionless P p pore pressure ML -1 T -2 φ porosity dimensionless T temperature q heat flow JL -2 T -1 κ thermal conductivity JL -1 T -1 -1 z depth L
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Lect. 1 - Introduction 3 Table of numerical data for the structural geologist Symbol Name Magnitude g average gravity at sea level 9.8 m/sec 2 ρ m mean density of the mantle 4.5 x 10 3 kg/m 2 (4.5 g/cm 2 ) ρ quartz density of quartz 2.65 x 10 3 kg/m 2 (2.65 g/cm 2 ) Table of conventions for the structural geologist Name Convention Principal stresses σ 1 > σ 2 > σ 3 Stresses in the crust Maximum horizontal stress S H Minimum horizontal stress S h Vertical horizontal stress S v Compressional normal stress positive Tensile normal stress negative Table of conversion factors for the structural geologist
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