Are you ready to rock?

By: Alicia Crespo

What is a rock?

A rock is a solid material made of minerals. Some are formed on the surface of earth and some are formed deep near it's core.

TYPES OF ROCK

Rhyolite

1.) Crystals form quickly. Form outside a volcano.

2.) Texture- Fine; Crystal size-Non-crystalline

3.) Non-vesicular

4.) Density- Low; Color-Lighter; Mineral composition- Felsic

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Conglomerate

Organic or Inorganic: Inorganic

Texture: Clastic

Grain Size: Pebbles, Cobbles, and/or boulders embedded in sand, silt and/or clay.

Composition:Mostly quartz, feldspar, and clay minerals.

Comments: Rounded fragments


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Slate

Texture: Foliated

Grain Size: Fine

Composition: Mica

Comments: Low-grade metamorphism of shale.

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Rock Cycle

The Rock Cycle is a model showing how rocks and sediments change over time.
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