How dangerous is Mount Merapi?
GeologyBased on data from the National Disaster Management Agency (BNPB), the disaster of Mount Merapi eruption claimed a total of 308 deaths, and the total damage and losses reached 3.62 trillion rupiahs in the Yogyakarta and Central Java regions [1]. Volcanic eruptions have a large impact or potential loss. Is Merapi dangerous? Merapi-type eruptions are
What is the longest lasting volcanic eruption?
GeologyThe Pu’u’ō’ō eruption began in 1983, and ranks as the longest and most voluminous known outpouring of lava from Kīlauea Volcano’s East Rift Zone in more than 500 years. What is the longest volcanic eruption? Lava has been spilling out of Puu Oo crater since 1983, making Kilauea the world’s longest continuously erupting volcano. Kilauea
What is one reason that geologists study rock bodies?
GeologyGeologists are ‘earth detectives’. Just like other detectives, we need clues that can help us explain what happened in the past. Studying what happens at the coast, in rivers or in the desert can help us figure out how landscapes change and sedimentary rocks form. Why do geologists study rocks? Geologists study rocks because they
How do you split rocks by hand?
GeologyWhat can break a rock in half? A crack hammer works best for large rocks. For smaller rocks, a rock hammer/pick or household hammer will work fine. Put the bag of rocks on a firm surface (concrete or asphalt), and knock gently. Slowly apply more pressure, until you feel the rocks start to break. How
How is a terminal moraine different from a recessional moraine?
GeologyWhat is the difference between a recessional and terminal moraine? There are two types of end moraines: terminal and recessional. Terminal moraines mark the maximum advance of the glacier. Recessional moraines are small ridges left as a glacier pauses during its retreat. What is recessional moraine? A recessional moraine consists of a secondary terminal moraine
What crystals Cannot be cleansed in salt?
GeologyCan you put quartz in salt water? Saltwater. While Clear Quartz has a rating of 7 on the Mohs scale of hardness, it is still susceptible to damage when exposed to saltwater. Can moonstones go in salt? Vibration Cleansing Another way is by cleansing the Moonstone gem in salt water as salt has always been
What is the biggest earthquake in California history?
GeologyCalifornia’s Largest Recorded Earthquakes Since 1800, Ranked by Magnitude Magnitude Date Location 7.9 Jan. 9, 1857 Fort Tejon 7.8 April 18, 1906 San Francisco 7.4 Mar. 26, 1872 Owens Valley 7.4 Nov. 8, 1980 W. of Eureka* Is a 10.0 earthquake possible in California? No, earthquakes of magnitude 10 or larger cannot happen. The magnitude
How is an oceanic ridge different from an oceanic rise?
GeologyWiseman and Ovey (1953) present the term oceanic rise as a long and broad elevation of the deep seafloor that rises gently and smoothly, and a ridge is considered to have steeper sides and less regular topography than a rise. What’s the difference between oceanic ridge and rise? So, what’s the difference between a ridge
Which has the highest porosity?
GeologyClay is the most porous sediment but is the least permeable. Clay usually acts as an aquitard, impeding the flow of water. Gravel and sand are both porous and permeable, making them good aquifer materials. Gravel has the highest permeability. What has the highest porosity soil? Clay has the highest total porosity. Clay has approximately
What does the Basin and Range look like?
GeologyBasin and Range topography is characterized by alternating valleys and mountainous areas, oriented in a north-south, linear direction. The entire region, including all of Nevada, southeastern California, and southeastern Oregon, consists of high mountain ranges (mostly running north-south) alternating with low valleys. How do you describe the Range and basin? The Basin and Range Province