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Volcanic rocks (often shortened to volcanics in scientific contexts) are rocks formed from lava erupted from a volcano. · Volcanic rocks are among the most ... Characteristics · Chemistry · Composition of volcanic rocks
9 апр. 2010 г. · Lava solidifies to rock · Basalt magma often forms shield volcanoes. · Andesite magma often forms cone volcanoes. · Rhyolite magma often forms ...
25 авг. 2014 г. · Volcanic rocks are extrusive igneous rocks. There are two main groups: rocks that form from the solidification of lava flows (extrusive), ...
4.5 Naming Volcanic Rocks. We name some volcanic rocks based their mineralogy. The common primary minerals in volcanic rocks are generally quartz, K-feldspar ...
Volcanic rocks can exhibit a range of textures, including fine-grained, coarse-grained, glassy, and vesicular. Basalt and andesite typically have fine-grained ...
Volcanic rocks are divided into three main types: basaltic, volcaniclastic and pyroclastic.
Volcanic rocks originate from igneous magma within the earths crust. Basalt,rhyolite and dacite are common lava types.When the magma is erupted onto the earths ...
Basaltic andesite · Basanite · Benmoreite · Bimodal volcanism · Blairmorite · Blueschist · Boninite · Brisbane tuff ...
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