How to Identify Igneous Rocks in Thin Section and Hand Sample - GEO GIRL

Learn to identify igneous rocks in thin section and hand sample through this comprehensive 31-minute video tutorial. Explore the characteristics of various igneous rock types, including basalt, gabbro, diabase, rhyolite, granite, syenite, andesite, diorite, dacite, peridotite, obsidian, pumice, scoria, anorthosite, and tuff. Examine detailed images of hand samples and thin sections for each rock type, understanding their mineral compositions, textures, and formation processes. Gain insights into the differences between extrusive and intrusive rocks, as well as the impact of cooling rates on grain size. Utilize this knowledge to enhance your skills in igneous petrology and rock identification.

Basalt
Gabbro
Diabase/Dolerite
Rhyolite
Granite
Syenite
Andesite
Diorite
Dacite & Granodiorite
Peridotite
Obsidian
Pumice
Scoria
Anorthosite
Tuff
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