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Why is potassium 40 useful in dating igneous rocks

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Although there are currently no active volcanoes in New Mexico, many extinct volcanoes are preserved in the state.

Well known extinct volcanoes in New Mexico include Mount Taylor, the Jemez Mountains, the Albuquerque volcanoes, and Capulin volcano.

For example, based on the primate fossil record, scientists know that living primates evolved from fossil primates and that this evolutionary history took tens of millions of years.

By comparing fossils of different primate species, scientists can examine how features changed and how primates evolved through time.

These changes typically occur so slowly that they are barely detectable over the span of a human life, yet even at this instant, the Earth's surface is moving and changing.

As these changes have occurred, organisms have evolved, and remnants of some have been preserved as fossils.

The broken up, fractured rock in the vent can sometimes be intruded by younger magma, causing the diatreme to be more well indurated (harder) than the surrounding rock.

In the case of Shiprock, erosion has removed the soft sedimentary rocks around the hardened diatreme, creating the distinctive landform that we see today.

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In the 1860's, English physicist Lord Kelvin disagreed with Charles Lyells proposition that the earth behaves in a uniform, unchanging manner.

Lava flows near Grants and Carrizozo are the youngest volcanic flows in the state (about 3000 years old and 5000 years old, respectively).

General references to volcanoes in New Mexico include: New Mexico Museum of Natural History and Science Nelia Dunbar's Decision Maker's paper Volcano World Friends of Albuquerque's Environmental Story If you cannot find the answer to your question here, check: U. Geological Survey Volcano FAQ A Kid's Guide to Volcanoes Shiprock is usually referred to as a special volcanic landform called a volcanic neck, which is the solidified feeder system of a volcano.

The age of the fossil must be determined so it can be compared to other fossil species from the same time period.

Understanding the ages of related fossil species helps scientists piece together the evolutionary history of a group of organisms.