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Posts tagged Lava Flows

Irrigated Fields, Desert and Volcanic Features of Northern Saudi Arabia

28.7N 38.7E

May 12th, 2011 Category: Deserts

Saudi Arabia – May 3rd, 2011

A zone of irrigated fields can be seen in northern Saudi Arabia’s Al-Jawf province, on the edge of the Arabian Desert.

In the lower half of the image, areas of mountains and volcanoes can be seen, particularly in the Madinah Province. Lava flows appear as dark brown stains on the landscape.

Jabal al-Druze Volcanic Field in Southern Syria – May 16th, 2010

32.6N 36.7E

May 16th, 2010 Category: Image of the day, Mountains, Volcanoes

Syria - April 28th, 2010

Syria - April 28th, 2010

The Jabal al-Druze volcanic field is an elevated volcanic region in Syria, in the As-Suwayda Governorate. It lies in the Haurun-Druze Plateau in the southwest of the country near the border with Jordan.

This volcanic field also lies within the northern part of the massive alkaline Harrat Ash Shamah (also known as Harrat Ash Shaam) volcanic field that extends from southern Syria to Saudi Arabia. The alkaline volcanic field consists of a group of 118 basaltic volcanoes active from the lower-Pleistocene to the Holocene.

The most prominent feature of this volcanic field is 1800m-high Jabal al-Druze,  also known as Jabal al-Arab (meaning Mountain of the Arabs). It stands out as a dark brown area in the center of the image.

The large southwestern plateau depression is filled by basaltic lava flows from volcanoes aligned in a northwest-southeast direction.

Tentacle-Shaped Lava Flows of Toussidé Volcano, Chad – April 28th, 2010

21.0N 16.4E

April 28th, 2010 Category: Lakes, Volcanoes

Chad - March 5th, 2010

Chad - March 5th, 2010

Toussidé (also known as Tarso Toussidé) is a potentially active volcano and the westernmost volcano of the Tibesti Mountains. The peak rises 3,265 m (10,712 ft) above sea level, and the volcano’s base measures approximately 55 miles (90 km) in diameter.

The peak is almost centered within the black shape that has tentacle-shaped lava flows extending down the western flank. The light brownish area surrounding the peak shows a distinctive radial drainage pattern that is quite common for stratovolcanoes as the terrain falls away from the main peak.

The depression southeast of the volcano measures approximately 5 miles (8 km) in diameter and 3300 feet (1000 m) in depth. Its white color is caused by an accumulation of carbonate salts, creating this soda lake of Tibesti.

With the exception of small vents that emit gasses and a few hot springs that continue to deposit minerals at the surface of the crater floor, little volcanic activity presently occurs in this region.

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