Science

Halwe Berg

Halwe Berg
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Halwe Berg

An astronaut aboard the Worldwide House Station (ISS) photographed a small semicircular mountain within the Dasht-e Kavir desert, about 130 kilometers (80 miles) southeast of the capital Tehran. The width of this picture, taken with a 1150-millimeter lens, represents a distance of 17 kilometers (10 miles).

Geologists have mapped this mountain as a sequence of volcanic rocks, and from the colours of the rock layers they will interpret the presence of various minerals and levels of volcanic exercise. The intricate sample of valleys additionally tells a narrative of the erosion of the rocky mountain.

In distinction, the decrease half of the picture reveals clean, flat surfaces generally known as alluvial followers. An nearly straight line break is seen within the picture between the hills and the followers — geologists have mapped it as a shift line. The fault cuts throughout the brittle rocks of the hills, resulting in its title: Half Mountain.

The fan surfaces are nearly 900 meters (2,900 ft) decrease than the summit of the hills. A lot of the streams circulation from the hills to the followers, the place they deposit sediment that’s eroded from the hills. The colour of alluvial fan sediments usually displays the colour of the father or mother rocks upstream. For instance, sediment eroded from the darker rocks of the mountain (center left) offers the accompanying followers a darker shade. Equally, gentle sediment from rocks in the course of the mountain offers some followers a lighter tone. On this desert area, the streams finish within the (usually dry) Namakmeer, simply outdoors the underside margin of the picture.

Astronaut picture ISS065-E-212403 was obtained on 30 July 2021 utilizing a Nikon D5 digital digital camera utilizing a focal size of 1150 millimeters. It’s supplied by the ISS Crew Earth Observations Facility and the Earth Science and Distant Sensing Unit, Johnson House Heart. The picture was taken by a member of the Expedition 65 crew. The picture was cropped and enhanced to reinforce distinction, and lens artifacts had been eliminated. The Worldwide House Station Program helps the laboratory as a part of the ISS Nationwide Lab to assist astronauts take images of the Earth that will probably be of the best worth to scientists and the general public, and to make these photos freely obtainable on the Web. Extra photos taken by astronauts and astronauts may be considered on the NASA / JSC Gateway to Astronaut Pictures of Earth. Captioned by Justin Wilkinson, Texas State College, JETS contract with NASA-JSC.

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