Claudia Mann
Learn more about the earth's interior and its rocks and minerals at <a href="http://www.rocksandminerals4u.com" title="http://www.rocksandminerals4u.com" target="_blank">http://www.rocksandminerals4u.com</a> . Purchase fossils, rocks, and minerals at <a href="http://www.fossilicious.com/" title="http://www.fossilicious.com/" target="_blank">http://www.fossilicious.com/</a> .
Articles by this Author
A study of the inner earth helps us understand earthquakes, volcanoes, plate tectonics, and more The earth’s interior has been sorted by Gravity
Mineral identification is done by checking for certain properties of minerals Because each mineral has its own unique set of physical properties we can test a specimen and find out how it exhibits these properties
Igneous…ignite And that’s just what happens when igneous rocks form
The Paleozoic Era is seen in the fossil record as an explosion of life forms The Cambrian Period marks the beginning of an era with thousands of new life forms in the ancient seas
Sedimentary rocks are classified as clastic, chemical, and organic sedimentary rocks
The rocks in each group form by completely different processes
The Mesozoic Era begins at the end of the Permian Period Mass extinction had eliminated most of the species of life that had existed throughout the Paleozoic Era
The Triassic Period begins the Mesozoic Era The mass extinction event at the end of the Permian period ended 90% of the species on earth at that time
The formation of Geodes takes place over millions of years and involves several different geological processes
Hollow Rocks
So, let’s start at the beginning: how do you get a hollow rock with lots of sparkling crystals inside
Amazonite has a soft green to blue green color, often with thin white streaks interlacing the green It forms blocky prismatic or tabular crystals with angles that are not quite ninety degrees