on April 15, 2022
Is a pebble a sedimentary rock?
GeologyEven though pebbles are composed of rock, they can not be considered sedimentary rock in a state where we observe them on the beach. Lying under the sun, pebbles are considered to be sediment. Only when pebbles are compacted and cemented can they be called conglomerate – a clastic sedimentary rock. What types of rocks
on April 15, 2022
What minerals are in pink granite?
GeologyPink Granite Pink colored granite is a result of an abundance of potassium feldspar within the granite. You can see small specs of milky semi-transparent quartz, dark brown/black amphibole, and opaque white feldspar. However, in a granite like the one above the primary mineral is potassium feldspar. What type of rock is granite pink? felsic
on April 15, 2022
How much water does the earth have?
GeologyOne estimate of global water distribution Water source Water volume, in cubic miles Percent of total water Oceans, Seas, & Bays 321,000,000 96.54 Ice caps, Glaciers, & Permanent Snow 5,773,000 1.74 Groundwater 5,614,000 1.69 Fresh How much water is the earth? About 71% Just how much water is there on Earth? About 71% of Earth’s
on April 15, 2022
What is the crushing strength of granite?
GeologyThe compressive strength is the maximum load per unit area that the stone can bear without crushing. A higher compressive strength indicates that the stone can withstand a higher crushing load. The required values range from 1,800 psi (12.45 MPa) for marble to 19,000 psi (131 MPa) for granite. Which stone has highest crushing strength?
on April 15, 2022
What is slumping in geography?
GeologyA slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or a rock layer moves a short distance down a slope. Movement is characterized by sliding along a concave-upward or planar surface. What is the definition of slumping in geography? slump, in geology, downward intermittent movement of
on April 15, 2022
How do Strainmeters work?
GeologyA strainmeter is an instrument used by geophysicists to measure the deformation of the Earth. Linear strainmeters measure the changes in the distance between two points, using either a solid piece of material (over a short distance) or a laser interferometer (over a long distance, up to several hundred meters). How effective are tiltmeters? While
on April 15, 2022
How do you clean Agatized coral?
GeologyHow do you polish Agatized coral? Quote from video:There we go and then we'll turn up the speed. So let's start polishing. I'm starting off with a 180 grit disc to take out some of the little saw marks that are in this. Is Agatized Coral rare? A rare type of mineralized fossil consisting of
on April 15, 2022
What are two ways igneous rocks are formed?
GeologyThe two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet. How are the igneous rocks are formed? Igneous
on April 15, 2022
When did the mudslide happen in California?
GeologyJanuary 9, 2018 Homes and streets of a neighborhood affected by the Santa Barbara County mudslides Date January 9, 2018 Location Southern California, United States Cause Soil saturation from heavy rainfall, and deforestation due to recent wildfires Deaths 23 What caused the mudslide in California? The Thomas Fire began near Santa Barbara in December 2017
on April 15, 2022
What is mineral Pleochroism?
GeologyPleochroism or dichroism is the change in color evident as the mineral is rotated under plane-polarized light. The primary cause of dichroism or pleochroism in minerals is due to adsorption of particular wavelengths of light. What do you mean by pleochroism? pleochroism, (from Greek pleiōn, “more,” and chrōs, “colour”), in optics, the selective absorption in