on April 17, 2022
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
on April 17, 2022
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
on April 17, 2022
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
on April 17, 2022
How can you tell which way a glacier is moving?
GeologyAt the bottom of the glacier, ice can slide over bedrock or shear subglacial sediments. Fun Fact: Ice flow direction is determined by the glacier surface: a glacier will always flow in the direction the ice is sloping. How can you tell which direction a glacier is moving? Glacier scientists often use striations to determine
on April 17, 2022
Is a Drumlin erosion or deposition?
GeologyPut simply, drumlins may have formed by a successive build of sediment to create the hill (ie deposition or accretion) or pre-existing sediments may have been depleted in places leaving residual hills (ie erosion), or possibly a process that blurs these distinctions. Are drumlins erosional? ‘ Their proximity to sediment-cored (‘drift’) drumlins implied a common
on April 17, 2022
Where are subduction zones found?
Geologythe Pacific Oceanall around the edge of the Pacific Ocean, offshore of Washington, Canada, Alaska, Russia, Japan and Indonesia. Called the “Ring of Fire,” these subduction zones are responsible for the world’s biggest earthquakes, the most terrible tsunamis and some of the worst volcanic eruptions. Which type of plate boundary is where subduction zones occur?
on April 17, 2022
Is Dolomite good for kitchen countertops?
GeologyFAQ. Is dolomite a good material for kitchen countertops? Dolomite is harder than marble, but softer than granite, so they can scratch if safety measures are not put in place. But is the right precautions are taken, like sealing and using cutting boards, dolomite is an excellent choice for kitchen countertops. Are dolomite countertops safe?
on April 17, 2022
What are examples of mineral resources?
GeologyMineral resources can be divided into two major categories – Metallic and Nonmetallic. Metallic resources are things like Gold, Silver, Tin, Copper, Lead, Zinc, Iron, Nickel, Chromium, and Aluminum. Nonmetallic resources are things like sand, gravel, gypsum, halite, Uranium, dimension stone. What are the 3 types of mineral resources? Minerals in general have been categorized
on April 17, 2022
How is a vent formed?
GeologyHydrothermal vents are the result of seawater percolating down through fissures in the ocean crust in the vicinity of spreading centers or subduction zones (places on Earth where two tectonic plates move away or towards one another). The cold seawater is heated by hot magma and reemerges to form the vents. How are deep sea
on April 17, 2022
How is copper found in nature?
GeologyNatural abundance Copper metal does occur naturally, but by far the greatest source is in minerals such as chalcopyrite and bornite. Copper is obtained from these ores and minerals by smelting, leaching and electrolysis. The major copper-producing countries are Chile, Peru and China. Where is copper most commonly found in nature? The largest copper mine