![I. Formation They are formed when hot, liquid rock, or magma, cools and solidifies (Hardens) - ppt download I. Formation They are formed when hot, liquid rock, or magma, cools and solidifies (Hardens) - ppt download](https://images.slideplayer.com/25/8102523/slides/slide_3.jpg)
I. Formation They are formed when hot, liquid rock, or magma, cools and solidifies (Hardens) - ppt download
![siltstone - fine grained sedimentary rock (composed mainly of small quartz grains) | Sedimentary rocks, Sedimentary, Rock siltstone - fine grained sedimentary rock (composed mainly of small quartz grains) | Sedimentary rocks, Sedimentary, Rock](https://i.pinimg.com/736x/dc/82/a5/dc82a5260aa54280879e5cc60510004d--sedimentary-rock-grains.jpg)
siltstone - fine grained sedimentary rock (composed mainly of small quartz grains) | Sedimentary rocks, Sedimentary, Rock
![Cutout of Fine-grain Gray Sandstone Rock Isolated on White Background. Stock Photo - Image of material, piece: 243744364 Cutout of Fine-grain Gray Sandstone Rock Isolated on White Background. Stock Photo - Image of material, piece: 243744364](https://thumbs.dreamstime.com/b/cutout-fine-grain-gray-sandstone-rock-isolated-white-background-sedimentary-composed-sand-size-grains-mineral-243744364.jpg)
Cutout of Fine-grain Gray Sandstone Rock Isolated on White Background. Stock Photo - Image of material, piece: 243744364
![Fine-grained ("volcanic") normal crystalline igneous rock: Mineral information, data and localities. Fine-grained ("volcanic") normal crystalline igneous rock: Mineral information, data and localities.](https://www.mindat.org/imagecache/1f/72/05033400016014695759939.jpg)
Fine-grained ("volcanic") normal crystalline igneous rock: Mineral information, data and localities.
![Basalt Igneous Rock in a Hand. Basalt is a Dark-colored, Fine-grained, Igneous Rock Composed Mainly of Plagioclase. Stock Photo - Image of aggregate, geology: 231421644 Basalt Igneous Rock in a Hand. Basalt is a Dark-colored, Fine-grained, Igneous Rock Composed Mainly of Plagioclase. Stock Photo - Image of aggregate, geology: 231421644](https://thumbs.dreamstime.com/z/basalt-igneous-rock-hand-basalt-dark-colored-fine-grained-igneous-rock-composed-mainly-plagioclase-rock-any-231421644.jpg)