The Ins And Outs Of A Geologic Map

By Betty Allen


If you are majoring in geology or have just obtained a job in natural history, you'll want to learn how to use the tools of the trade. A geologic map will show you the age of rocks in your local area so that you have an easier time exploring. Once you've developed a feel for how geology works, you can head off into the mountains and enjoy your surroundings.

All maps that are used in geology will be properly color coded so that users can immediately spot what they are looking for. All Jurassic age rocks, for example, will be given the same color. If you are doing a project on a certain dinosaur that lived during the Jurassic, you'll want to explore rocks where fossils of these great beasts might actually be found.

Large maps are usually printed on paper that be rolled up and taken with you when you are on an expedition. Keep the paper casually rolled up and then use a rubber band to tie it off. When out in the wilderness, the rubber band can be taken off and the paper unsheathed and set up on a flat surface for everyone to examine. This should keep the material itself from tearing or degrading too fast.

You can order specialty maps online for the regions you'll be working in. Certain sites offer plenty of options, and you can expect your order to be shipped to your home within a week or so. It is sometimes better to order maps in bulk, as this way you'll get a better per unit price. This is how it usually occurs at colleges and universities.

Becoming familiar with some basic geologic concepts can help you reach your educational goals. Volcanoes, especially ones that spew beautiful lava into the air, are often in the news. When volcanoes erupt and lava flows out and eventually hardens, it can create unique rock formations that is recorded in the history of the Earth for geologists to discover and analyze.

Mountain building episodes are also fascinating and offer a way to learn about how the great ranges of the Earth came together. If you are going to be doing a bit of geologic work in the Appalachians, you'll want to learn about how stress and strain can create metamorphic rocks. Some minerals are often closely associated with certain kinds of mountain building events.

If you truly become interested in geology, you can also read up on the history of the Earth itself. The planet formed from the solar nebula that gradually collapsed in on itself. As the planets formed, they gradually attracted more matter through gravity and grew to their present sizes. The Earth itself is over four billion years old and has been through several catastrophes along the way.

You will ultimately want to find a map that gives you every chance of meeting with success in your field. As long as you purchase a set that clearly marks geologic boundaries with different colors, you should succeed. With luck, you can keep the paper in great shape and continue to bring it out whenever you are going to be hiking through the woods and looking at rocks.




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