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Contents of 4.3 Where do igneous rocks appear in a landscape?

4.3 Where do igneous rocks appear in a landscape?

• Volcanic rocks in the landscape
• Volcanic neck: the residual "core" of magma in a volcano's neck (actually more of an intrusive body)
• Lava domes: a "mound" of lava that did not flow
• Pyroclastic deposits: ash, pumice, lapilli, bombs, may form deposits such as welded tuff

Rhyolitic ash fused when hot into a consolidated mass of tuff.

Fig 4.13