on April 16, 2022
What is the population of the Columbia Plateau?
GeologyDo people live in the Columbia Plateau? Population centers are widely dispersed in the ecoregion with only one metropolitan area, Boise, Idaho, exceeding 100,000 in population. What is the largest city in the Columbia Plateau? Major Cities The city of Walla Walla is located in the heart of the Columbia Plateau. What is Columbia Plateau
on April 16, 2022
Do Rocks Have streak?
GeologyStreak Plates A mineral’s streak is the color it has when ground to a powder. Some minerals that occur in a range of colors always have the same streak. As a result, streak is considered a more stable indicator than the color of the solid rock. What does it mean when a rock has a
on April 16, 2022
What fault runs through Searles Valley?
GeologyThe Ash Hill fault (mostly right-lateral strike slip) transfers strain into the northern con- tinuation of the Searles Valley zone, via a complex array of hanging-wall normal and strike-slip faults. What fault line is Searles Valley on? Garlock Fault The fault continues on to the Garlock Fault about 15 miles southeast of Ridgecrest, just past
on April 16, 2022
How much damage did Mt Pinatubo cause?
GeologyThe eruption cost $700 million in damage, $100 million of which was damage to 16 aircraft flying at the time of the eruption and $250 million in property with the rest a combination of agriculture, forestry and land. How destructive was Mount Pinatubo? Nearly every bridge within 30 km (19 mi) of Mount Pinatubo was
on April 16, 2022
What is the Protolith of amphibolite?
GeologyAmphibolite is a metamorphosed mafic igneous rock (basalt, gabbro) although it is usually difficult to determine the protolith because original features are often obliterated. Basalt is composed of pyroxene + plagioclase. What is the parent rock of amphibolite? Amphibolite Type Metamorphic Rock Metamorphic Type Regional Metamorphic Grade Middle Grade (Middle P – Middle T) Parent
on April 16, 2022
What is the relative age relationship of faults?
GeologyThe principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. The fault labeled ‘E’ cuts through all three sedimentary rock layers (A, B, and C) and also cuts through the intrusion (D). So the fault must be the youngest formation that is seen. What is
on April 16, 2022
What are trace fossils used for?
GeologyTrace fossils provide us with indirect evidence of life in the past, such as the footprints, tracks, burrows, borings, and feces left behind by animals, rather than the preserved remains of the body of the actual animal itself. What can trace fossils tell us about how an animal lived? Trace fossils preserve the moment of
on April 16, 2022
What does depth mean in earthquake?
GeologyIn seismology, the depth of focus or focal depth refers to the depth at which an earthquake occurs. Are shallow or deep earthquakes worse? Shallow quakes generally tend to be more damaging than deeper quakes. Seismic waves from deep quakes have to travel farther to the surface, losing energy along the way. Is 10km a
on April 16, 2022
Where is the safest place to live in California from earthquakes?
GeologySacramentoSacramento Is the Safest Place to Live in California from Earthquakes. BestPlaces ranked Sacramento as the safest place to live in California from natural disasters. Where should you live to avoid wildfires? The Best Places to Live In and Avoid Fires in NorCal Ukiah Endowed with ecological wealth in the form of the mild
on April 16, 2022
What is Pangaea and how is it related to continental drift?
GeologyPangaea existed about 240 million years ago. By about 200 million years ago, this supercontinent began breaking up. Over millions of years, Pangaea separated into pieces that moved away from one another. These pieces slowly assumed their positions as the continent we recognize today. What is continental drift and how does it relate to Pangea?