Page 398 - Geosystems An Introduction to Physical Geography 4th Canadian Edition

362 part III The Earth–Atmosphere Interface
Table 12.4 Metamorphic Rocks
Parent rock
Metamorphic equivalent
Texture
Shale (clay minerals) Basalt, shale, peridotite Sandstone
Gneiss
Slate Schist Quartzite
Marble
Foliated Foliated nonfoliated
Slate
Sedimentary rock
granite, slate, shale
gneiss
Foliated
Limestone, dolomite
Marble
nonfoliated
[Slate and Lewisian gneiss: Bobbé Christopherson; marble and gneiss: richard M Busch.]
Sediment
Lewisian gneiss
(a) Sedimentary layers on Mainland Island, Orkneys, Scotland.
Metamorphic rock
Igneous rock
(b) Active lava flow and surrounding basalt, Big Island, Hawai‘i.
Magma
▲Figure 12.13 The rock cycle. In this schematic of the relations among igneous, sedimentary, and metamorphic processes, the thin, blue arrows indicate “shortcuts”—such as when igneous rock is melted and becomes metamorphic rock without first going through a sedimentary stage. [(a) Bobbé Christopherson. (b) USgS. (c) nPS.]
Animation
The Rock Cycle
(c) Metamorphic schist (with pink granitic intrusion) along the Colorado Rover. Grand Canyon, Arizona.
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