What Are Sedimentary Rocks?

What Are Sedimentary Rocks? book cover — What Are Sedimentary Rocks Natalie Hyde Crabtree Publishing Company www crabtreebooks com

What Are Sedimentary Rocks? — page 1 — WHERE DID IT ALL BEGIN WEAK OR STRONG Some sedimentary rocks such as shale are so soft you can crumble them in your hand Others such as quartz sandstone are so hard you can barely break them apart with a sledgehammer 왔 Shale is a rather soft sedimentary rock O ut of the three types of rock igneous sedimentary and metamorphic sedimentary is the most common It is made up of layers of small particles that are pressed and cemented tightly together CLASTIC ROCKS Different kinds of particles make different kinds of sedimentary rocks Sandstone and shale are made up of bits of other rocks and minerals and are called clastic rocks ORGANIC ROCKS Other sedimentary rocks such as coal or chalk are mostly formed by the remains of plants or animals Because they are made up mostly of things that were once alive they are called organic sedimentary rocks 왘 Coal is the largest source of energy for the generation of electricity 왘 Nearly 40 major sedimentary rock layers are exposed in the Grand Canyon 4

What Are Sedimentary Rocks?

What Are Sedimentary Rocks?

Learn how sedimentary rocks are useful in determining the Earth’s geological history because its layers hold fossils and other clues.

About This Book

By: Natalie Hyde

Illustrated by:

Published by: Crabtree Publishing Company

7-9Age Range

6.1AR

30Pages

EnvironmentSubject

IG950LLexile

15-30 minsReading Time

SGuided Reading

VFountas & Pinnell

60DRA

0

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