pore textures
applications 228–31
bubble shape 222
bubble size distribution 221–2
bubbles, nucleation and growth 219–21
connectedness of pores 227
conversion of 2-D data 225–6
definition of pores 216, 222
display of pore size distributions 226–7
image analysis methods 223
magmas 217–18
moments of pore size distribution 227–8
partially molten rocks 217–18
permeability 217, 226
shapes 228
surface area measurements 223–4
three-dimensional methods 224–5
total porosity 224
two-dimensional methods 225
porphyry 122
position
aggregation and agglutination 203–4
box-counting method 211
cluster analysis 207–8
definitions 204
geochemical self-organisation 201–2
igneous rocks 212–15
magma mixing 204
metamorphic rocks 212
mineral point correlations 210–11
nearest-neighbour distance (big R) 206–7
nucleation of crystals 200–
1
packing 204
section and surface methods 205
three-dimensional methods 205
touching crystals 208–9
wavelet and Fourier methods 210
potassium feldspar 122–4, 131
principal component analysis 30–1
probabilities, interpretation 36
projected data, extraction of size distribution 92
projected outline effect 92
projected size data conversion
pseudotachylyte 128
pyroclastic rocks 197–8, 229
pyroxene
dihedral angles 161, 163
position 212–13
shape 159
size 114, 120
qualitative data 2–3
quartz
dihedral angle 162
position 213, 215
shape 158, 160
size 121–2, 132
rapid growth textures 158
recrystallisation 60, 132
reflectance 25
reflected light microscopy 23–4
narrow bandwidth filters 24
Nomarski (DIC) microscopy 24–5
reflectance 25
residence time 50
resolution 9
reticular density 136
roughening transition 47
roundness 153
Saltikov method 85–91
scanning electron microscope 17
seeded threshold filter 14
Sept Iles intrusive suite 116, 191
serial sectioning 10–11
settling of crystals 55–6, 59, 116
settling of sediments, analysis 75
shape 135–64
axial ratio definitions 145
deformed crystals 138–9
deformed rocks 160–1
dihedral angles 139–43, 154, 161–4
equilibrium crystal forms 136–7
extraction of axial ratios 145–8
extraction of grain boundary parameters 149–53
Fourier analysis 151–3
fractal boundary parameters 149–53
Gaussian diffusion-resample method 151
growth crystal forms 137
intersection data treatment 145–8
projection data treatment 148
sedimentological parameters 153
solution crystal forms 137–8
three-dimensional analytical methods 143–4
two-dimensional analytical methods 144–5
undeformed rocks 154–9
shape-preferred orientation methods
171–4
direct 3-D methods 171
extraction of orientation parameters 172–4
inertia tensor method 172
intercept method 172–3
section and surface methods 171–2
star length and volume 173
wavelet methods 174
shear 168, 231
shergottite 127
sieves 75
size 39–134
analytical methods 74–7
definition, three-dimensional 39–40
distribution 40
kinetic textures 48–52
batch crystallisation 51–2
Gaussian rate variations 52
growth probability model 52
size-proportional growth rate 52
steady-state models 49–51
limits of measurements 9, 27
linear size definition 40–2
mean projected height 42
mean size 40, 77–9
264 Index