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7 Chapter 7Figure 7.1 Common igneous minerals. Ferromagnesian minerals include olivine,...Figure 7.2 Rock classification based upon percentage of dark‐colored mineral...Figure 7.3 (a) Common phaneritic (coarse crystals) and aphanitic (fine cryst...Figure 7.4 Basalt porphyry containing euhedral and subhedral plagioclase cry...Figure 7.5 Granite pegmatite with K‐feldspar, beryl, quartz, and hornblende....Figure 7.6 Coarse‐grained phaneritic granite with early formed, euhedral to ...Figure 7.7 Aphanitic dacite from Mt. St. Helens 2004 dome eruption. Dacite c...Figure 7.8 (a) Porphyritic phaneritic texture with large pink K‐feldspar phe...Figure 7.9 Temperature–pressure relations depicting solid, solid plus liquid...Figure 7.10 Plagioclase phase diagram illustrating crystalline textures that...Figure 7.11 (a) Graph depicts viscosity versus temperature for five differen...Figure 7.12 Grain boundary alteration and crystal coarsening is produced by ...Figure 7.13 Snowflake obsidian displaying cristobalite seed crystals as well...Figure 7.14 Cross‐bedded vesicular pumice bomb ejected by the 1980 eruption ...Figure 7.15 At depth within the magma pluton, gases are dissolved within the...Figure 7.16 Amygdaloidal basalt in which vesicles have been infilled with qu...Figure 7.17 (a) IUGS classification for pyroclastic rocks based on diameter ...Figure 7.18 Angular volcanic blocks from explosive eruptions at Kilauea, Haw...Figure 7.19 Unwelded ashfall deposits from explosive volcanic eruptions.Figure 7.20 Partially welded ash flow tuff deposit.Figure 7.21 Densely welded tuff deposit.Figure 7.22 (a) The eight major elements in Earth's crust by weight percent,...Figure B7.1 Large ion lithophile elements contain an ionic charge/ionic radi...Figure 7.23 QAPF diagram for plutonic igneous rocks with >10% felsic mineral...Figure 7.24 Modal classification of gabbroic rocks based on proportions of t...Figure 7.25 Modal classification of ultramafic plutonic rocks based on the p...Figure 7.26 Simplified rock classification proposed by Glazner et al. (2019)...Figure 7.27 QAPF diagram for volcanic igneous rocks with >10% felsic mineral...Figure 7.28 (a) Alkali oxide versus silica (TAS) classification diagram for ...