Relative dating exercise geology

10 Jan

Common examples of elements are iron, copper, silver, gold, hydrogen, carbon, nitrogen, and oxygen.

The Periodic Table is a list of 108 known elements arrange by atomic number (see Figure 2-6).

In addition, basic geologic principles can be applied to resolving the order of events leading to the formation of rocks and landscape features. Cross Sections - interpretations of vertical views of geologic features below the surface.

This section presents many basic concepts that are universal to all physical sciences.1. A mineral is a naturally occurring, inorganic (never living) solid with a definite internal arrangement of atoms (crystal structure) and a chemical formula that only varies over a limited range that does not alter the crystal structure.

However, most rocks we see around us form very slowly in settings that are not visible on the land surface.

Slow processes creating rocks can be inferred by observing reefs growing in the oceans, or sediments being carried by flowing water in streams or moved by waves crashing on beaches.

Rocks are composed of particles ranging from microscopic grains to full sized crystals and crystal grains of different kinds of minerals, and containing many different identifiable physical characteristics.

Everything around us is made of chemical compounds that have testable and identifying characteristics, allowing them to be classified, and their age determined.

Most of the rocks we see on the surface of the planet formed by processes that happened long ago, but we can see these processes actively taking place in many places.

Rapid rock formation can be seen happening such as lava cooling from a volcanic eruption in places like Hawaii or Iceland.

We can see sediments being deposited, but we cannot see them turning into stone because the process may take thousand or even millions of years.

Rocks are composed of chemical compounds naturally occurring in nature.