on April 17, 2022
How sedimentary rocks are formed animation?
GeologyWhat is sediment deposition? Deposition is the laying down of sediment carried by wind, flowing water, the sea or ice. Sediment can be transported as pebbles, sand and mud, or as salts dissolved in water. What is an example of deposition of sediment? Depositional landforms are the visible evidence of processes that have deposited sediments
on April 17, 2022
What are some interesting facts about cinder cone volcanoes?
GeologyCinder cones are the simplest and most common type of volcano. Cinder cones form over time from particles from fire fountains. Cinder cones are never huge and have a slope of around 33 degrees. They can be new volcanoes, or they can form over the vents of pre-existing volcanoes. What makes a cinder cone unique?
on April 17, 2022
How do you identify greywacke?
GeologyGreywacke or graywacke (German grauwacke, signifying a grey, earthy rock) is a variety of sandstone generally characterized by its hardness, dark color, and poorly sorted angular grains of quartz, feldspar, and small rock fragments or lithic fragments set in a compact, clay-fine matrix. How do you classify sandstone? There are many different systems of classifying
on April 17, 2022
Can volcanic ash be used as fertilizer?
Geology“The volcanic ash provides the surrounding soil with essential nutrients. It contains minerals that are beneficial to plants. The fine ash breaks down quickly to mix with the soil. It proves to be a good fertilizer for the crops. Is volcanic ash good for plants? The ash holds air and the air spaces it creates
on April 17, 2022
What does the asthenosphere consist of?
GeologyThe Asthenosphere is made up of semi-plastic rock. Since the Lithosphere has a lower density, it floats on top of the Asthenosphere similar to the way in which an iceberg or a block of wood floats on water. The lower mantle below the Asthenosphere is more rigid and less plastic. What does the asthenosphere contain?
on April 17, 2022
Do earthquakes occur in one particular climate?
GeologyWe also know that most earthquakes occur far beneath Earth’s surface, well beyond the influence of surface temperatures and conditions. Finally, we know the statistical distribution of earthquakes is approximately equal across all types of weather conditions. Is earthquake affected by climate? Melting glaciers and thermal expansion of oceans from climate change may also contribute
on April 17, 2022
What’s the latest on Hawaii’s volcano?
GeologyIs Hawaii volcano Still Erupting 2021? Mauna Loa Eruption Update Mauna Loa volcano is not erupting, and the current volcano advisory level is Advisory. From lava to water and back again. Learn about three remarkable changes in the past three years at Halemaʻumaʻu crater on the summit of Kīlauea. Is the Hawaii volcano erupting right
on April 17, 2022
How old are the Hawaiian islands geologically?
GeologyThe islands of Oahu and Kauai have greater ages, with the latter being about five million years old. To the northwest, the volcanoes are progressively older, with Suiko Seamount in the northern part of the chain having an age of 65 million years. When was Hawaii formed geologically? The hotspot, which geologists estimate began producing
on April 17, 2022
What are the differences between the three types of seismic waves?
GeologyBody waves travel through the interior of the Earth. Surface waves travel across the surface. Surface waves decay more slowly with distance than body waves which travel in three dimensions. Particle motion of surface waves is larger than that of body waves, so surface waves tend to cause more damage. What is the difference between
on April 17, 2022
How is schist formed?
GeologySchist typically forms during regional metamorphism accompanying the process of mountain building (orogeny) and usually reflects a medium grade of metamorphism. Schist can form from many different kinds of rocks, including sedimentary rocks such as mudstones and igneous rocks such as tuffs. What is schist and how is it formed? Schist is medium grade metamorphic