Posted on March 29, 2022 (Updated on July 9, 2025)
What is the difference between basalt and andesite?
Regional SpecificsIt has less than 20% quartz and 10% feldspathoid by volume, with at least 65% of the feldspar in the rock consisting of plagioclase. This places andesite in the basalt/andesite field of the QAPF diagram. Andesite is further distinguished from basalt by its silica content of over 52%. How are basalt and andesite related? Andesite
Posted on March 29, 2022 (Updated on July 9, 2025)
What is the types of fossils?
Regional SpecificsThere are five types of fossils: Body Fossils. Molecular Fossils. Trace Fossils. Carbon Fossils. Pseudofossils. What are 3 types of fossil? Scientists categorize fossils into three main groups – impression fossils, trace fossils, and replacement fossils.The 3 Types of Fossils Impression fossils. These fossils contain prints, or impressions, of plants or animals from long ago.
Posted on March 29, 2022 (Updated on July 9, 2025)
What was the worst earthquake in history?
Regional SpecificsGreat Alaska Earthquake (1964)– 9.2 It lasted approximately 4.5 minutes and is the most powerful recorded earthquake in U.S. history. The earthquake triggered 27-foot (8.2 meters) tsunami which destroyed the village of Chenega, killing 23 of the 68 people who lived there. Has there ever been a 10.0 earthquake? No, earthquakes of magnitude 10 or
Posted on March 29, 2022 (Updated on July 9, 2025)
How did Hope BC get its name?
Regional SpecificsHope was established 1848-49 as a Hudson’s Bay Company post at the western end of its Brigade Trail from Fort Kamloops (see KAMLOOPS), and was so named in the hope that this trail would provide an all-British route between forts Kamloops and LANGLEY. What is Hope BC known? Visitors can also take a self-guided tour
Posted on March 29, 2022 (Updated on July 9, 2025)
What does siltstone feel like?
Regional SpecificsWe cannot see the difference between these rocks, but it turns out that siltstone feels gritty when nibbled or rubbed against a tooth whereas claystones feel smooth. If you find a claystone, you know that it accumulated in a very quiet environment with almost still water. What is the texture of siltstone? Siltstone Type Sedimentary
Posted on March 29, 2022 (Updated on July 9, 2025)
What areas are susceptible to liquefaction?
Regional SpecificsThe highest hazard areas are concentrated in regions of man-made landfill, especially fill that was placed many decades ago in areas that were once submerged bay floor. Such areas along the Bay margins are found in San Francisco, Oakland and Alameda Island, as well as other places around San Francisco Bay. How do you know