By James S. Monroe, Reed Wicander
Historic GEOLOGY, 6th version, offers a balanced evaluate of the geological and organic historical past of Earth as a continuum of interrelated occasions that replicate the underlying ideas and techniques that experience formed our planet. scholars are taught the fundamental geologic ideas in addition to how scientists practice those ideas to solve Earth's historical past. 3 significant issues - time, evolutionary idea, and plate tectonics - are woven jointly through the booklet to aid scholars hyperlink crucial fabric and increase their realizing of ancient geology. The 6th version has been completely up-to-date to incorporate the formation of the Earth-Moon procedure, information regarding the evolution of populations as an entire, and assurance of weather switch during the textual content, putting an emphasis on what we don't comprehend in the ancient geology box compared to what we do be aware of.
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Extra info for Historical Geology
Texture and composition are the criteria geologists use to classify sedimentary rocks. • Any type of rock may be altered by heat, pressure, fluids, or any combination of these, to form metamorphic rocks. • One feature used to classify metamorphic rocks is foliation— that is, a platy or layered aspect, but some lack this feature and are said to be nonfoliated. • The fact that Earth materials are continually recycled and that the three families of rocks are interrelated is summarized in the rock cycle.
1c), just as a forest is made up of trees either of the same kind or different kinds. Some minerals are beautiful and have been a source of fascination for thousands of years. As a matter of fact, several minerals and rocks have served as religious symbols or talismans, or have been worn, carried, applied externally, or ingested for their presumed mystical or curative powers. For example, diamond is supposed to ward off evil spirits, sickness, and floods, and relating gemstones to birth month gives them great appeal to many people.
The phosphate used in fertilizers and animal feed supplements comes from phosphorous-rich rocks, and coal is an energy resource most of which is burned to generate electricity. Some rocks are crushed and used as aggregate in cement for roadbeds, foundations, and sidewalks, or they are cut and polished for countertops, mantelpieces, monuments, and tombstones. In fact, rock has been used for construction for thousands of years. Our primary interest in rocks, however, lies in the fact that they constitute the geologic record, which is the record of prehistoric physical and biologic events, a record that you will learn to decipher in this course.
Historical Geology by James S. Monroe, Reed Wicander