The weathered-basalt interpretation would predict a large ... so the occurrence of vast amounts of andesite would probably require a wet source region and efficient transport of less dense magmas.

When magma or lava cools and solidifies, it forms igneous rock. (Basalt, andesite, and rhyolite are all igneous rocks.) The following chart lists common lava types and their flow rates.

Let's make some observations: The rock is full of red-to-black clasts of various sizes and shapes. The clasts are almost all basaltic andesite in composition. Some of the clasts look like they have a ...

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1472 to 2012 degrees Fahrenheit Andesite lava: 1742 to 2192 degrees Fahrenheit Basalt lava: 1832 to 2282 degrees Fahrenheit Lava is made of crystals, volcanic glass and bubbles (also known as ...