Connect with us

Uncategorized

Light diamonds on how deep earthquakes occur

 


First discovered in the 1920s, deep earthquakes have baffled the scientific community as to how they occur at such depths, and now a team from the Carnegie Institution for Science believes they have found a way to solve the mystery. The team’s results have been published in AGU Advances.

Two key words: fluids and diamonds

Earthquakes deep beneath the Earth’s surface — called deep focal earthquakes — occur between 186 and 435 miles (300 to 700 kilometers) underground, where, in theory, they shouldn’t happen because the type of friction needed for earthquakes to occur isn’t strong there near the surface. .

Earthquakes as we know them typically occur about 43 miles (70 km) below the Earth’s surface, where stress causes a fracture between two blocks of rock (or fault), causing them to slide over each other, the Carnegie team explains.

However, the overall temperature is much higher in the ground, which causes the rocks to deform and absorb stress more easily.

But high-focal earthquakes do happen, and until now, scientists weren’t sure how that might happen. Another recent study from the University of California, San Diego Jacobs School of Engineering suggests that shifting rock formations deep underground is associated with these types of earthquakes, and that the Kargini team’s focus isn’t far off.

Previous research hypothesizes that fluids play an important role in earthquakes of medium depth, from 43 to 435 miles (70 to 300 kilometers), but because this water cannot reach where high-focal earthquakes occur, scientists have largely ignored this cause.

That’s when the Carnegie team realized that “diamonds form in liquids.” And “if diamonds are there, there are liquids” and diamonds are there.

Water, diamonds and high-focus earthquakes

Diamonds found deep in the earth suggest that water must be somewhere in there, and since these diamonds can be lifted to the surface for examination, the team was able to study them. This provided scientists with a first-hand sample of deep underground, and how earthquakes would occur there, Science reports.

The team discovered that water and other minerals did not form deep in the Earth, but were transported there by sinking plates.

To test their idea, the scientists built advanced computational models to simulate the temperatures of submerged plates at great depths. Next, they noted any changes that occurred to the water-bearing minerals when they were placed at high temperatures, strong pressures, such as deep within the Earth’s surface.

They discovered that minerals could theoretically carry water to those depths, which explains how fluids descend there and may be part of why deep-focus earthquakes occur at such deep sites.

“The nature of deep earthquakes is one of the big questions in Earth sciences,” said Stephen Sherry of Carnegie Science. “We needed all of these four different disciplines (geochemistry, seismology, geodynamics, petrology) to work together to make this argument.”

.

What Are The Main Benefits Of Comparing Car Insurance Quotes Online

LOS ANGELES, CA / ACCESSWIRE / June 24, 2020, / Compare-autoinsurance.Org has launched a new blog post that presents the main benefits of comparing multiple car insurance quotes. For more info and free online quotes, please visit https://compare-autoinsurance.Org/the-advantages-of-comparing-prices-with-car-insurance-quotes-online/ The modern society has numerous technological advantages. One important advantage is the speed at which information is sent and received. With the help of the internet, the shopping habits of many persons have drastically changed. The car insurance industry hasn't remained untouched by these changes. On the internet, drivers can compare insurance prices and find out which sellers have the best offers. View photos The advantages of comparing online car insurance quotes are the following: Online quotes can be obtained from anywhere and at any time. Unlike physical insurance agencies, websites don't have a specific schedule and they are available at any time. Drivers that have busy working schedules, can compare quotes from anywhere and at any time, even at midnight. Multiple choices. Almost all insurance providers, no matter if they are well-known brands or just local insurers, have an online presence. Online quotes will allow policyholders the chance to discover multiple insurance companies and check their prices. Drivers are no longer required to get quotes from just a few known insurance companies. Also, local and regional insurers can provide lower insurance rates for the same services. Accurate insurance estimates. Online quotes can only be accurate if the customers provide accurate and real info about their car models and driving history. Lying about past driving incidents can make the price estimates to be lower, but when dealing with an insurance company lying to them is useless. Usually, insurance companies will do research about a potential customer before granting him coverage. Online quotes can be sorted easily. Although drivers are recommended to not choose a policy just based on its price, drivers can easily sort quotes by insurance price. Using brokerage websites will allow drivers to get quotes from multiple insurers, thus making the comparison faster and easier. For additional info, money-saving tips, and free car insurance quotes, visit https://compare-autoinsurance.Org/ Compare-autoinsurance.Org is an online provider of life, home, health, and auto insurance quotes. This website is unique because it does not simply stick to one kind of insurance provider, but brings the clients the best deals from many different online insurance carriers. In this way, clients have access to offers from multiple carriers all in one place: this website. On this site, customers have access to quotes for insurance plans from various agencies, such as local or nationwide agencies, brand names insurance companies, etc. "Online quotes can easily help drivers obtain better car insurance deals. All they have to do is to complete an online form with accurate and real info, then compare prices", said Russell Rabichev, Marketing Director of Internet Marketing Company. CONTACT: Company Name: Internet Marketing CompanyPerson for contact Name: Gurgu CPhone Number: (818) 359-3898Email: [email protected]: https://compare-autoinsurance.Org/ SOURCE: Compare-autoinsurance.Org View source version on accesswire.Com:https://www.Accesswire.Com/595055/What-Are-The-Main-Benefits-Of-Comparing-Car-Insurance-Quotes-Online View photos



Picture Credit!

ExBUlletin

to request, modification Contact us at Here or [email protected]