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Earth grew new layer under Iceland volcano

Published

10 years ago

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London: By monitoring how magma flows through cracks in the rock away from a volcano, scientists have shed light on how the earths crust forms.index

When the Baroarbunga volcano in Iceland erupted in August, scientists found that the molten rock forms vertical sheet-like features known as dykes, which force the surrounding rock apart.

“New crust forms where two tectonic plates are moving away from each other. Mostly this happens beneath the oceans, where it is difficult to observe. However, in Iceland this happens beneath dry land,” explained Andy Hooper from and co-author.

“Using radar measurements from space, we can form an image of caldera movement occurring in one day. Usually we expect to see just noise in the image, but we were amazed to see up to 55cm of subsidence,” said Karsten Spaans from University of Leeds and co-author.

The rate of dyke propagation was variable and slowed as the magma reached natural barriers.

The dyke grows in segments, breaking through from one to the next by the build up of pressure.

Thus magma under central volcanoes is effectively redistributed over large distances to create new upper crust at divergent plate boundaries.

Like other liquids, magma flows along the path of least resistance, which explains why the dyke at Baroarbunga volcano in Iceland changed direction as it progressed.

“Our observations of this event showed that the magma injected into the crust took an incredibly roundabout path and proceeded in fits and starts,” Hooper concluded.

The study appeared in the journal Nature.

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Apple is giving a huge discount on its gadgets: Details inside

Published

3 years ago

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May 5, 2022

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If you want to buy an iPhone and were waiting for a nice offer, then we have a piece of good news for you! Amazon Summer Sale May 2022 has begun and they are offering major discounts on various smartphones, laptops, and smart TVs, among others.

The sale is live now on the e-commerce platform with no-cost EMI options and exchange discounts on various products. In addition to this, Amazon has also partnered with several banks including ICICI, Kotak Bank, and RBL so that customers get instant discounts of up to 10% using their cards and EMI transactions.

Customers can easily enjoy this summer sale and get massive discounts on iPhones. They can also compare prices on Flipkart Big Saving Days Sale 2022 before making a purchase.

 

Amazon Summer Sale May 2022: Discount offer on iPhone 13 

Apple’s coveted phone model iPhone 13 in the 128 GB storage model will be available during the Amazon Summer Sale May 2022 for Rs 64,900. The MRP of the phone is Rs 79,900. This means that the customers will be able to enjoy a discount of up to Rs 15,000 on the purchase of the iPhone 13.

If you have an old iPhone in working condition then you will also be eligible to receive another additional discount worth up to Rs 17,000 on the iPhone 13.

Buy at Rs. 64,900 (MRP – Rs. 79,900)

Features of Apple iPhone 13 

The iPhone is powered by an A15 Bionic processor with 6 core CPU. Apart from this, it has 16 core neural engines. With the iPhone 13, up to 512 GB of storage will be available. The iPhone 13 has a 6.1-inch Retina XDR display with 1000 nits brightness.

The iPhone 13 has a 12-megapixel dual rear camera setup. This time a new wide-angle camera has been given, whose aperture is f/1.6. With this, there is support for sensor optical stabilisation. Night mode has been made better than before. The second lens is also 12 megapixels ultra-wide and has an aperture of f/2.4.

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