I 
) 
■ 
WORKING GROUP 9 
MILES 
471 
Table 4. Consolidated parent materials: 
sedimentary rock types 
Clastic ( Physical Deposition) 
Texture (Grain Size) 
Unconsolidated Sediment 
Rock (Consolidated) 
Coarse grained 
Gravel 
Detritus; Rubble 
Conglomerate 
Breccia; Fanglomerate 
Medium grained 
Till 
Sand 
Volcanic Ash 
Tillite 
Sandstone; Arkose, Graywacke 
Tuff 
Fine grained 
Silt 
Clay, Silt, Sand 
Clay 
Siltstone 
Mudstone Shale 
Claystone 
Non-Clastic (Chemical Depostition) 
Type 
Organic 
Inorganic 
Carbonate 
Limestone: chalk 
coquina 
coral 
Dolomite 
Limestone: calcareous tufa, calichi, 
marl, travertine 
Dolomite 
Siliceous 
Diatomaceous earth 
Siliceous Sinter (Geyserite) 
Chert (Flint, Jasper) 
Carbonaceous 
Coal: anthracite 
bituminous 
lignite 
Peat 
Muck 
Evaporite 
Anhydrite rock 
Gypsum rock 
Rock salt 
Table 5. Consolidated parent materials: 
metamorphic rock types 
Original Rock 
Rock Produced by 
Contact Metamorphism 
Rock Produced by 
Dynamic Metamorphism 
Shale 
Hornfels 
Slate Phyllite 
Mica Schist 
Gneiss 
Sandstone 
Quartzite 
Quartzite 
Limestone 
Marble 
Marble 
Dark (basic) Igneous 
Serpentine (Greenstone) 
Phyllite 
Green Schist 
Gneiss 
Light (acidic) Igneous 
(Altered Granites, etc.) 
Phyllite 
Mica Schist 
Gneiss