Posted on April 16, 2022 (Updated on July 9, 2025)
What is in glacial rock dust?
Regional SpecificsThis mixed pile of rocks is where glacial rock dust comes from. Made of a wide variety of rocks, it contains a complex blend of minerals. It is particularly good for adding calcium, iron, magnesium, and potassium. It also contains some manganese, cobalt, silicon, and small amounts of other minerals as well.Nov 14, 2018 Is
Posted on April 16, 2022 (Updated on July 9, 2025)
What would decrease the competence of a stream?
Regional SpecificsWhat affects stream competence? Stream capacity is the maximum amount of solid load (bed and suspended) a stream can carry. It depends on both the discharge and the velocity (since velocity affects the competence and therefore the range of particle sizes that may be transported). What decreases stream competence? Vegetation has a known impact on
Posted on April 16, 2022 (Updated on July 9, 2025)
How can ocean basins change in size?
Regional SpecificsThe major factor behind the variations is plate movements and related changes in climate and ocean water circulation. Since about 200 million years ago, a single vast ocean basin has given way to five or six smaller ones. The Pacific Ocean basin has shrunk, while the North and South Atlantic basins have been created. How
Posted on April 16, 2022 (Updated on July 9, 2025)
What volcanoes are active in the US?
Regional SpecificsAre there any active volcanoes in the US? “There are about 169 volcanoes in the United States that scientists consider active. Most of these are located in Alaska, where eruptions occur virtually every year. Others are located throughout the west and in Hawaii (see our Volcano Activity Map for their locations). What are the 3
Posted on April 16, 2022 (Updated on July 9, 2025)
Did Arizona just have an earthquake?
Regional SpecificsWhen was the last time Arizona had an earthquake? Most recent felt events, include: 2005 M5. 2 near Holbrook; 2014 M5. 3 near Duncan; 2015 M4. 1 near Black Canyon City, AZ. Was there an earthquake just now near Tucson AZ? There were no significant confirmed earthquakes in or near Tucson in the past 24
Posted on April 16, 2022 (Updated on July 9, 2025)
How do you survive a lahar?
Regional SpecificsHow can I survive a lahar? Quote from video:Listen for a roar. If you hear lahar roaring toward you immediately. Head for higher ground avoid canyons as landslides. How do people adapt to lahar? Strategies include (1) hazard avoidance with land-use planning and zonation; (2) hazard modification with engineered protection structures (bypass channel and deflection