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Articles by Claudia Mann (211)   
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20 Articles Total
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| Amazonite - Extraordinary Feldspar 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. Because of its natural beauty it is used to make... ( added 22 days 12 hours ago.) |
| What Is A Geode? 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? Geodes start their... ( added 37 days 14 hours ago.) |
| The Triassic Period A Time of Transition 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 plants and animals that survived would repopulate the planet. The Age of Reptiles The... ( added 125 days 12 hours ago.) |
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| The Mesozoic Era 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 Continents
At end of the Paleozoic Era the land that would become the... ( added 145 days ago.) |
| Sedimentary Rocks Sedimentary rocks are classified as clastic, chemical, and organic sedimentary rocks. The rocks in each group form by completely different processes. Clastic Sedimentary Rocks Clastic sedimentary rocks are formed from sediment. Sediments are tiny... ( added 150 days 12 hours ago.) |
| The Paleozoic Era 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. Prior to the Cambrian period fossils are extremely rare but after... ( added 162 days 21 hours ago.) |
| Igneous Rocks Igneous...ignite! And that's just what happens when igneous rocks form. Fiercely hot molten rock from deep inside the earth pushes its way out and lights everything in its path on fire. As the firey liquid cools, it forms igneous rocks. Rock types... ( added 163 days 14 hours ago.) |
| Properties of Minerals 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. This list of characteristics... ( added 167 days 23 hours ago.) |
| Metamorphic Rocks Metamorphic Rocks are rocks that have changed form due to heat and pressure. Metamorphic comes from the Greek words meta and morph. Meta means change and morph means form. So we get metamorphic meaning to change form. Metamorphic rocks were once... ( added 208 days 16 hours ago.) |
| The Inner Earth The earth's interior has been sorted by Gravity. Generally heavier elements tend to sink toward the center. Lighter materials have risen to become pat of the crust. This action has created distinct layers and is still in process today. The Inner... ( added 217 days 20 hours ago.) |
| Rhodochrosite: State Mineral of Colorado Rhodochrosite is at the top of the list when you think of Colorado minerals. It is the Colorado state mineral. Ranging from a near clear cherry red to opaque pink and white this mineral is sought after by collectors and jewelers alike. The most... ( added 233 days 22 hours ago.) |
| The Jurassic Period - More Than Just Dinosaurs The J urassic Period lasted more than 60 million years. It began after the Triassic Period about 206 million years ago and lasted until 144 million years ago at the beginning of the Cretaceous period. It is often called the Age of the Dinosaurs.... ( added 1 year 171 days ago.) |
| The Sailback Carnosaur From Africa Jurassic Park 3 made Spinosaurus famous: Spinosaur was the ferocious star of the film! But we all know that films take great liberty with the truth, so let’s see what paleontologists can tell us about the real Spinosaur.
How Big Is Big? How... ( added 1 year 177 days ago.) |
| Megalodon - The Worlds Largest Predator? Megalodon was the largest shark the world has ever seen. Initially researchers estimated this beast to be 80 to 100 feet in length. More recent estimates are in the 40 to 50 feet range and weighing up to 48 tons. This makes Megalodon one of the... ( added 1 year 333 days ago.) |
| Fossil Arthropods of Distinction The prolific trilobite could be called the signpost of the Paleozoic Era. This early arthropod, one of earth's first, shows up in the fossil record in the early Cambrian Period about 450 million years ago. It flourished in the ancient seas for... ( added 1 year 337 days ago.) |
| The Ammonites-Beautiful and Useful Fossils Ammonites have been known to mankind for thousands of years. They are the source of many stories and myths. The name of this spiral-shelled cephalopod comes from the Egyptian god Ammon. Ammon was pictured as a man with the horns of a ram... ( added 1 year 349 days ago.) |
| The Perils of Fossil Collecting When fossil collecting , road cuts can hold many treasures for fossil hunters. But fossil hunters BEWARE! Those cuts hold something more: varmints that will hang on to your skin long after you’ve taken your fossil treasures home. A Lesson Learned... ( added 2 years 4 days ago.) |
| Finding Fossil Information On The Web Fossil information sites are abundant on the web. But not all sites are created equal. Some sites are scholarly and may be over-the-head of the first-time or casual fossil collector. At the other end of the spectrum are sites that are a collection... ( added 2 years 14 days ago.) |
| How Are Fossils Formed? How are fossils formed? For fossil formation to take place a series of fortunate events must occur. If any part of the series is missing, we will never see the fossil! In fact, fossilization is a rare occurrence. Nature tends toward recycling.... ( added 2 years 153 days ago.) |
| Kids' Activities: The Magic Bag Is A Great Way to Introduce Kids To Fossils My long-time enjoyment of earth science, especially when it included fossil activities, had me doing earth science activities for kids from the time my own children were little ones. So when my middle school asked me to pick something to teach for... ( added 2 years 180 days ago.) |
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