Claudia Mann
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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 Mesozoic Era is called the Age of Reptiles. But that only tells a small part of the story. Just like the Paleozoic Era, the Mesozoic is divided into periods. Each period has... (posted by Claudia 3 years 244 days ago.)
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 Mesozoic Era is called the Age of Reptiles. But that only tells a small part of the story. Just like the Paleozoic Era, the Mesozoic is divided into periods. Each period has... (posted by Claudia 3 years 244 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 broken bits and pieces of rock that settle out of air or water. Weathering All rocks are subject to weathering. Weathering is anything that breaks the rocks into smaller pieces or sediments.... (posted by Claudia 3 years 269 days ago.)
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 broken bits and pieces of rock that settle out of air or water. Weathering All rocks are subject to weathering. Weathering is anything that breaks the rocks into smaller pieces or sediments.... (posted by Claudia 3 years 269 days 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 about 540 million years ago the fossil record shows many and varied life forms. Life In The Seas It is this characteristic, life in the ancient sea, which distinguishes the Paleozoic... (posted by Claudia 3 years 281 days ago.)
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 about 540 million years ago the fossil record shows many and varied life forms. Life In The Seas It is this characteristic, life in the ancient sea, which distinguishes the Paleozoic... (posted by Claudia 3 years 281 days 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 are organized, or classified, according to how the rock formed. It's a pretty simple system and there are only three types: igneous, sedimentary and metamorphic. Their names give clues about how... (posted by Claudia 3 years 282 days ago.)
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 are organized, or classified, according to how the rock formed. It's a pretty simple system and there are only three types: igneous, sedimentary and metamorphic. Their names give clues about how... (posted by Claudia 3 years 282 days 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 sedimentary, igneous or even other metamorphic rocks that have been changed by heat and pressure. There are two kinds of metamorphism. Contact metamorphism Regional metamorphism Contact... (posted by Claudia 3 years 327 days ago.)
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 sedimentary, igneous or even other metamorphic rocks that have been changed by heat and pressure. There are two kinds of metamorphism. Contact metamorphism Regional metamorphism Contact... (posted by Claudia 3 years 327 days 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 beautiful specimens in the world come from the Sweet Home Mine located in Alma, Colorado. Now closed, this mine produced large beautiful specimens for about 10 years in the... (posted by Claudia 3 years 352 days ago.)
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 beautiful specimens in the world come from the Sweet Home Mine located in Alma, Colorado. Now closed, this mine produced large beautiful specimens for about 10 years in the... (posted by Claudia 3 years 352 days ago.)
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