Page 106 - Atlas of Sedimentary Rocks Under The Microscope

fracture porosity 65 meteoric water cements 127, 128, poikilitic texture 40, 41
131
polycrystalline quartz 3-5
gastropods 84, 86 micas 29, 30, 68, 69
polyhalite 202-4
geopctal sediment 159 micrite 34
porosity
Girvanel/a 117 micrite envelopes 123-24 limestones 65
sandstones 23
glauconite 33-5 micritization 54
potassium f e rricyanide 34,
globcriginids I l l microcline f e ldspar II, 12
Appendix 2
globorotalids 11 I microcrystalline calcite 34
pressure-solution
grainstone 62, 146 microquartz 181-4 limestones 59
sandstones 22
grain-to-grain pressure microspar 141
solution 137 primary porosity 65
microstalactitic cements 129
grapcstones 37 pseudopunctate brachiopods 91, 95
miliolids 109
greywackes 24, 62-7 pseudospar 140, 142
mouldic porosity 153
growth framework porosity 65 punctae 90, 91
molluscs 84-9
gypsum 43, 44, 189, 190, 193-6
monocryslalline quartz I, 2
quartz arenite 53
mudstone (carbonate) 62, 149
H a l im e d a 112 quartz
muscovite 29, 30, 68, 69 cement 38, 39, 42
halite 197-201
detrital grains 1-8
hydrocarbons 160 replacive 183-8
neomorphism 60, 61
non-skeletal algae 53, 54
igneous rock fragments 23-6, 58, radial-fibrous fabric 55
59 nummulites 107
radiolaria 181, 182
impunctate brachiopods 92 116
oncoids 81, 82 red algac
Inoceramus 88 rock f r agments
oncoliths 81, 82 17-28
intercrystal porosity 65, 168
oogonia 114
intergranular porosity 65, 47, 151, roundness 3
152 ooids 72-4, 171, 172
rugose corals 99
intraclasts 77, 79 oolitic ironstones 171-173, 175-177
intragranular porosity 65, 159 ooliths 72-4, 171, 172 sandstone classification 24
intramicrite 62 oomicrite 62 sandstone rock fragments 21, 22
intrasparite 62 oomouldic porosity 154 schistose quartz 19, 20
ironstones 171-80 oosparite 62, 146 scleractinian corals 45, 144, 145
isopachous cements 127, 160 orthoclase fe ldspar 15, 16 secondary porosity 65
itacolumite 48,49 ostracods 104, 105 sedarenite 24,56, 57
oysters 87 sedimentary rock f r agments 21,
Koninckopora 113 22, 27,28,56,57
packstone 62, 147 sericite 9, 10
laminoid fe nestrae 158
pelagic foraminifera 1 1 1 shale fragments 17, 18
limestone classification 62
pellets 75 sheared quartz 5
limonite 173, 174
pelmicrite 62 shelter porosity 65, 156
litharcniles 56-0l
peloids 75, 76 shrinkage porosity 65
lithic arkose 24
pelsparitc 62 siderite 171, 172, 176, 177
lithic grcywackes 62, 63, 66, 67
perthitic f e ldspar 13, 14 silicification 183-8
lithoclasts 80
phosphatic sediments 210-15 siltstones 68-71
Lithostrotion 99
phosphorites 210-13 skeletal calcareous algae 50
phreatic cements 131 skeletal particles 84-120
macroquartz 187, 188
phyllarenite 24 slate fragments 17, 18
magnesite 205-7
pisoids 83 sorting 24
maturity 24
plagioclase f e ldspar 9, 10 sparite 34
metamorphic rock
fragments 17-20 planktonic bivalves 89 sparry calcite 34
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