Dacitic magma was encountered in a drillhole during geothermal exploration on Kīlauea in 2005. At a depth of 2488 m, the magma flowed up the wellbore. This produced several kilograms of clear, colorless vitric (glassy, non-crystalline) cuttings at the surface.

Where is dacite found in the world?

Dacite is found in lava flows, lava domes, dikes, sills, and pyroclastic debris. It is a rock type usually found on continental crust above subduction zones, where a relatively young oceanic plate has melted below.

What is a dacite volcano?

Dacite is an igneous, volcanic rock with a high iron content found at many lava-domes. Dacite (pronounced /deɪsaɪt/) is an igneous, volcanic rock with a high iron content. ... Dacite is also defined by silica and alkali contents in the TAS classification.