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Posts tagged Aïr Mountains

Dust Blowing Across Chad, Niger and Nigeria – December 18th, 2012

18.2N 7.9E

December 18th, 2012 Category: Dust Storms, Image of the day, Lakes, Mountains

Chad – December 17th, 2012

Dust from the Bodélé Depression (right edge, fully visible in full image), in Chad, blows southwestward, north of Lake Chad, and into the neighboring countries of Niger (above) and Nigeria (below), in the lower left quadrant. North of this cloud of dust are the volcanic Aïr Mountains, in Niger.

Aïr Mountains in Northern Niger

18.2N 7.9E

February 1st, 2012 Category: Deserts, Mountains

Niger - December 29th, 2012

Clouds hang over the Sahara Desert south of the Aïr Mountains in northern Niger. This triangular massif rises to more than 6,000 ft (1 830 m) and extends over 84 000 km². Lying in the midst of desert north of the 17th parallel, the Aïr plateau, with an average altitude between 500 and 900 m, forms an island of Sahel climate.

The massif is a plateau consisting of a Cambrian age erosion surface on Precambrian metamorphic rocks, punctuated by a series of flat-topped, granite intrusion peaks, which include Mont Idoukal-n-Taghès (Niger’s highest point at 2022 m). The massif contains volcanic features including the extinct caldera of Arakao, Cenozoic lava flows of hawaiite to trachyte composition, volcanic cones, tuff rings and one of the largest ring dike systems in the world.

Aïr Mountains by Ténéré Desert, Niger

18.2N 7.9E

January 15th, 2012 Category: Deserts, Mountains

Niger - January 6th, 2012

The Aïr Mountains form a triangular massif, located in northern Niger, within the Sahara desert. They rise to more than 6,000 ft (1 830 m) and extend over 84 000 km², and have an average altitude between 500 and 900 m. The mountains consist of nine almost circular massifs rising from a rocky plateau, bordered by the sand dunes and plain of the Ténéré Desert to the east (right edge).

The massif is a plateau consisting of a Cambrian age erosion surface on Precambrian metamorphic rocks, punctuated by a series of flat-topped, granite intrusion peaks, which include Mont Idoukal-n-Taghès (Niger’s highest point at 2022 m), Mont Tamgak (1988 m), Mont Greboun (1944 m), and others. The massif contains volcanic features including the extinct calderas, volcanic cones, and tuff rings.

Aïr Mountains, Niger, and Tibesti Mountains, Chad – January 10th, 2012

18.8N 12.4E

January 10th, 2012 Category: Deserts, Image of the day, Lakes, Mountains

Niger - January 9th, 2012

Visible amidst the Sahara Desert sands in Africa are two important mountain ranges: the Aïr Mountains (left) and the Tibesti Mountains (upper right), as well as Lake Chad (lower right). Lake Chad is a historically large, shallow, endorheic lake that provides water to more than 20 million people living in the four countries that surround it (Chad, Cameroon, Niger, and Nigeria) on the edge of the Sahara Desert.

The Aïr Mountains (also known as the Aïr Massif or Air of Niger) is a triangular massif, located in northern Niger, within the Sahara desert. Part of the West Saharan montane xeric woodlands ecoregion, they rise to more than 6,000 ft (1 830 m) and extend over 84 000 km².

The Tibesti Mountains are a range of inactive volcanoes located on the northern edge of the Chad Basin in the Borkou- and Tibesti Region of northern Chad. The massif is one of the most prominent features of the Central-Sahara desert and covers an area of approximately 100,000 km². The northern slopes extend into southern Libya.

 

Dust from Sahara Desert Blows About Niger

18.2N 12.8E

December 10th, 2011 Category: Deserts, Dust Storms, Lakes, Mountains

Niger - December 10th, 2011

Dust blows about the Sahara Desert in Niger. Here, the bright yellow-white dust is mostly concentrated in the lower left quadrant, near the border with Nigeria, and at the center right, near the border with Chad.

Visible in the upper right corner are the Tibesti Mountains, in Chad, while the Aïr Mountains in Nigeria can be observed at the center left. Lake Chad can be seen through the veil of dust in the lower right quadrant, on the Niger-Chad border.