How agates are formed
by J. Lang Wood
Agates are easily-recognizable stones that show the complex layering of materials, called drusy, from which they are composed. Agates come in many different appearances, from the single eye of the Mexican agate to the delicate filaments of the moss agate that suggest vegetative material in its formation. Agates are found all over the world, including the United States, Europe, Africa, Asia and
by B. J. Deming
Some of the most beautiful places in the world owe their existence to volcanoes. The lush greenery of Hawaii, for instance, thrives
by Tenebris
To contain an offshore oil leak, its source must be known. If the leak is directly from the wellhead, it must be capped or otherwise
by Wanderer
Recently, I have followed both the petrochemical and biofuel evolving debate in the Chicago region. As a chemist and concerned citizen
387 Article Titles on Geology & Geophysics
- How the earth's core affects life on earth (1 article)
- How scientists study earthquakes (1 article)
- Progress toward predicting volcanic eruptions (1 article)
- How the earth's core was formed (2 articles)
- Interesting facts about the Pacific Ocean's 'Ring of Fire' (2 articles)
- Layers of the earth (3 articles)
- Origins and purpose of the Nazca Lines of Peru (2 articles)
- Top ten rarest gems on Earth (2 articles)
- How geodes form (1 article)
- How petrified wood is formed (3 articles)
- The use of sulfur as a fungicide (2 articles)
- Why the volcanoes of Java are particularly devastating (2 articles)
- Major active volcanoes of Indonesia (1 article)
- Active volcanoes in Antarctica (1 article)
- Understanding how volcanoes produce so much greenhouse gas (1 article)
- The classification of sedimentary rocks (6 articles)
- How the Rocky Mountains were formed (2 articles)
- How stalagmites form (1 article)
- Understanding strike-slip faults (2 articles)
- Understanding thrust faults (1 article)
- How agates are formed (2 articles)
- Understanding color variations in sapphires (1 article)
- Geography: What is a second order stream (2 articles)
- Orogeny: The ways that mountains form (1 article)
- The stages of coal formation, peat, etc. (1 article)
- How gneiss is formed (2 articles)
- What gneiss is (2 articles)
- What causes a geyser (2 articles)
- How oil is extracted from oil shale (2 articles)
- How coal is formed (2 articles)
- The differences between bituminous coal and anthracite coal (1 article)
- What determines how explosive a volcanic eruption will be (1 article)
- How glaciers change the landscape (1 article)
- What is a moraine and how is it formed? (1 article)
- What will happen if and when a supervolcano erupts? (1 article)
- How glaciers change the landscape (1 article)
- How iron pyrite is formed (1 article)
- An earthquake survival guide (5 articles)
- Overview of the kinds of igneous rocks (1 article)
- Why not all obsidian is completely black (1 article)
- Geologists: Torrential rains trigger earthquakes (1 article)
- How flint is formed (1 article)
- Oldest hairy microbe fossils discovered (1 article)
- Possible causes for sink holes in the earth (1 article)
- Super volcanoes that threaten the planet (1 article)
- What are catacombs? (2 articles)
- The history of Indiana limestone (1 article)
- How gorges are formed (1 article)
- Kinds of rock that make up the Grand Canyon walls (1 article)
- Types of soils (3 articles)
