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The Shammar Mountains ( ar, جِبَال شَمَّر, Jibāl Shammar) is a mountain range in the northwestern
Saudi Arabia Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in Western Asia. It covers the bulk of the Arabian Peninsula, and has a land area of about , making it the fifth-largest country in Asia, the second-largest in the Ara ...
n province of Ha'il. It includes the Ajā () and Salma subranges.


Geology

The Aja Mountains are to an extent made up of
granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies un ...
, whereas the Salma are made up of
basalt Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90 ...
. The phrase "Hadn formation" was used by Chevremont (1982) to refer to
volcanic rock Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano. In other words, it differs from other igneous rock by being of volcanic origin. Like all rock types, the concept of volcanic ...
s of the area of Ha'il, and was treated by Hadley and Schmidt (1980) as being part of a
silicic Silicic is an adjective to describe magma or igneous rock rich in silica. The amount of silica that constitutes a silicic rock is usually defined as at least 63 percent. Granite and rhyolite are the most common silicic rocks. Silicic is the grou ...
and
volcaniclastic Volcaniclastics are geologic materials composed of broken fragments ( clasts) of volcanic rock. These encompass all clastic volcanic materials, regardless of what process fragmented the rock, how it was subsequently transported, what environment it ...
sequence referred to as the "Shammar group", in a broader, regional context.


Wildlife

The protected area of Jabal Aja is of
ecological Ecology () is the study of the relationships between living organisms, including humans, and their physical environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere level. Ecology overlaps wi ...
significance. Two
Asiatic cheetah The Asiatic cheetah (''Acinonyx jubatus venaticus'') is a critically endangered cheetah subspecies currently only surviving in Iran. It once occurred from the Arabian Peninsula and the Near East to the Caspian region, Transcaucasus, Kyzylkum ...
s, the last known in the country, were killed near Ha'il in 1973, and their skins kept near the Imara Palace for a few days.


Peaks

* Mount Aja ( ar, جَبَل أَجَا, Jabal Ajā) * Mount Samra' ( ar, جَبَل ٱلسَّمْرَاء, Jabal As-Samrā’)


Gallery

File:Alsamra.jpg, A view of Ha'il City from the top of Samra Mountain File:صورة طائر غريب من وحي الطبيعة - panoramio - Abothamer Homoud.jpg, Natural bird shape File:Mahagah2.jpg, Mahajah rock formation


See also

* Adayra Valley * Emirate of Jabal Shammar * Ghor es-Safi *
List of mountains in Saudi Arabia This is an (incomplete) list of mountains in Saudi Arabia. Peaks over 3,000 m Peaks over 2,500 m }) , 2,965 * , As-Sarawat , 'Asir Region , Al-Harjah , , - , Jabal Warrab ( ar, جبل وراب) , 2,948 * , As-Sarawat , 'Asir Regi ...
* People: ** Al Fadl ** Jarrahids ** Shammar **
Tayy , location = 2nd century CE–10th century: Jabal Tayy and Syrian Desert 10th century–16th century: Jabal Tayy, Syrian Desert, Jibal al-Sharat, al-Balqa, Palmyrene Steppe, Upper Mesopotamia, Northern Hejaz, Najd , parent_tribe = Madh ...
'


References


External links


The tantalizing Aja and Salma mountains in Hail, northwest of Saudi Arabia
(
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)
Mobily_Hail_Shamma & Salma Mountain_HD
(
Dailymotion Dailymotion is a French video-sharing technology platform owned by Vivendi. North American launch partners included Vice Media, Bloomberg and Hearst Digital Media. It is among the earliest known platforms to support HD (720p) resolution vid ...
) Mountain ranges of Saudi Arabia {{SaudiArabia-geo-stub