Posted on April 16, 2022 (Updated on July 9, 2025)
Do Rocks Have streak?
Regional SpecificsStreak 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
Posted on April 16, 2022 (Updated on July 9, 2025)
What fault runs through Searles Valley?
Regional SpecificsThe 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
Posted on April 16, 2022 (Updated on July 9, 2025)
How much damage did Mt Pinatubo cause?
Regional SpecificsThe 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
Posted on April 16, 2022 (Updated on July 9, 2025)
What is the Protolith of amphibolite?
Regional SpecificsAmphibolite 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
Posted on April 16, 2022 (Updated on July 9, 2025)
What is the relative age relationship of faults?
Regional SpecificsThe 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
Posted on April 16, 2022 (Updated on July 9, 2025)
What are trace fossils used for?
Regional SpecificsTrace 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