on April 16, 2022
What period did Ammonite live in?
Regional SpecificsAmmonites: A Wild Ride Through Time (and What Their Shells Tell Us) Ever stumble upon a perfectly coiled fossil and wonder about its story? Chances are, you’ve met an ammonite. These incredible creatures, related to modern squid and octopuses, aren’t around anymore, but their fossilized shells are like little time capsules, giving us a peek
on April 16, 2022
When did the Columbia River basalts form?
Regional SpecificsThe Columbia River Basalts: When the Earth Went Wild in the Northwest Picture this: vast stretches of the Pacific Northwest, once a relatively normal landscape, suddenly ripped open, spewing molten rock like a scene from a disaster movie. That’s essentially what happened when the Columbia River Basalt Group (CRBG) formed. This wasn’t just a regular
on April 16, 2022
What was the cause of the Great Hanshin Earthquake?
Regional SpecificsThe Great Hanshin Earthquake: When Kobe Shook The Great Hanshin Earthquake – you might know it as the Kobe Earthquake – hit southern Hyōgo Prefecture, Japan, on January 17, 1995. It was 5:46 in the morning, and the ground just ripped apart. The quake registered 6.9 on the moment magnitude scale, and in some places,
on April 16, 2022
What are the characteristics of a clastic sedimentary rock?
Regional SpecificsClastic sedimentary rocks are named according to the characteristics of clasts (rock and mineral fragments) that comprise them. These characteristics include grain size, shape, and sorting. How do you identify a clastic sedimentary rock? Clastic sedimentary rocks are subdivided on the basis of grain size. Secondary characteristics used to further distinguish clastic rocks are sorting,
on April 16, 2022
Where is Galena found in the world?
Regional SpecificsGalena deposits are found in France, Romania, Austria, Belgium, Italy, Spain, Scotland, England, Australia, and Mexico. Noted deposits include those at Freiberg, Saxony; Cornwall, Derbyshire, and Cumberland, England; the Sullivan mine of British Columbia; and Broken Hill, Australia. Is Galena rare on Earth? Galena is a rare mineral in some granitic pegmatites. It is also
on April 16, 2022
How does Magma turn into extrusive igneous rock?
Regional SpecificsExtrusive Igneous Rocks: Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth’s surface. These are the rocks that form at erupting volcanoes and oozing fissures. What is the example of extrusive igneous rock? Types of extrusive igneous rocks include: pumice, obsidian, andesite, rhyolite, and basalt. What