8.2 ALLOCHTHONOUS SEDIMENTS CLASSIFIED
331
LIME
100%
CLAY
100%
SILICA
I00%
Fig. 8.1. An example of the end-member classification style. This triangle differentiates sands, claystones, and
limestones.
deposits. Studies of modern sediments are primarily concerned with the hydrodynamics of transport and deposition. Sediment description predominantly emphasizes grain
size and texture rather than mineral composition. Hence a scheme similar to that in
Fig. 8.4 is generally used. In ancient sediments, however, emphasis is placed much more
Lime
Dolomite
Fig. 8.2. An example of the end-member classification style. This tetrahedron differentiates four-component
systems, in this case limestones, dolomites, sandstones, and clays.
331
LIME
100%
CLAY
100%
SILICA
I00%
Fig. 8.1. An example of the end-member classification style. This triangle differentiates sands, claystones, and
limestones.
deposits. Studies of modern sediments are primarily concerned with the hydrodynamics of transport and deposition. Sediment description predominantly emphasizes grain
size and texture rather than mineral composition. Hence a scheme similar to that in
Fig. 8.4 is generally used. In ancient sediments, however, emphasis is placed much more
Lime
Dolomite
Fig. 8.2. An example of the end-member classification style. This tetrahedron differentiates four-component
systems, in this case limestones, dolomites, sandstones, and clays.