Geology of Armenia

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Gegham mountains Geghama Mountains.jpg
Gegham mountains
Caves of Tegh, Armenia ("Cave City") Cave City Tegh.jpg
Caves of Tegh, Armenia ("Cave City")
Topography of Armenia Armenia Topography.png
Topography of Armenia
Garni Gorge 2014 Prowincja Kotajk, Garni, Wawoz Garni (28).jpg
Garni Gorge
Columnar jointing at Garni Gorge Garni Gorge Armenia (24).JPG
Columnar jointing at Garni Gorge
Chalcopyrite ore from the deposit at Shamlugh in Armenia. From the collection of the Vernadsky State Geological Museum in Moscow, Russia Medny-kolchedan.jpg
Chalcopyrite ore from the deposit at Shamlugh in Armenia. From the collection of the Vernadsky State Geological Museum in Moscow, Russia
Lava in Gutanasar mountain range Gutanasar. Mount of Armenia 2. Lava.JPG
Lava in Gutanasar mountain range
"Old Goris" rock formation in Armenia Old Goris.jpeg
"Old Goris" rock formation in Armenia

The geology of Armenia was shaped by geological upheaval pushed up the Earth's crust to form the Armenian Plateau 25 million years ago. [1] This created the complex topography of Armenia. [1]

Contents

The Lesser Caucasus range extends through northern Armenia, runs southeast between Lake Sevan and Azerbaijan, then passes roughly along the Armenian-Azerbaijani border to Iran. [1] Thus situated, the mountains make travel from north to south difficult. [1]

Earthquakes

Geological turmoil continues in the form of devastating earthquakes. [1] In a December 1988 earthquake, the second largest city in the republic, Gyumri (then called Leninakan), was heavily damaged by a massive quake that killed more than 25,000 people. [1]

Terrain

About half of Armenia's area of approximately 29,800 km2 (11,505.8 sq mi) has an elevation of at least 2,000 m (6,562 ft), and only 3% of the country lies below 650 m (2,133 ft). [1] The lowest points are in the valleys of the Araks River and the Debet River in the far north, which have elevations of 380 and 430 m (1,247 and 1,411 ft), respectively. [1] Elevations in the Lesser Caucasus vary between 2,640 and 3,280 m (8,661 and 10,761 ft). [1] To the southwest of the range is the Armenian Plateau, which slopes southwestward toward the Araks River on the Turkish border. [1] The plateau is masked by intermediate mountain ranges and extinct volcanoes. [1] The largest of these, Mount Aragats, 4,095 meters (13,435 ft) high, is also the highest point in Armenia. [1] Most of the population lives in the western and northwestern parts of the country, where the two major cities, Yerevan and Gyumri (previously called Aleksandropol during the Soviet period), are located. [1]

The valleys of the Debet River and Akstafa River as they pass through mountain areas form the chief routes into Armenia from the north. [1] Lake Sevan is by far the largest lake at 72.5 km (45 mi) across at its widest point and 376 km (233.6 mi) long. [1] It lies 2,070 m (6,791 ft) above sea level on the plateau. [1]

Armenia's terrain is most rugged in the extreme southeast, which is drained by the Bargushat River and most moderate in the Araks River valley to the extreme southwest. [1] Most of Armenia is drained by the Araks or its tributary, the Hrazdan, which flow from Lake Sevan. [1] The Araks forms most of Armenia's border with Turkey and Iran, [1] while the Zangezur Mountains form the border between Armenia's southern province of Syunik and Azerbaijan's adjacent Nakhchivan autonomous region.[ citation needed ]

Armenian terrain Armenian terrain.jpg
Armenian terrain

Volcanic mountains

Volcanic mountains in Armenia include Mount Ara, Mount Aragats, Azhdahak, Ghegam Ridge, Mount of Armenia. Porak. Arpi Gorge and Garni Gorge contain columnar igneous rocks (Columnar jointing).

Mining

Mines in Armenia include Kajaran Mine and Teghut Mine. Both are open pit mines for copper and molybdenum.

Fossils

Group or FormationPeriodNotes
Akhura Formation Permian
Ali Bashi Formation Permian
Arpinskaya Formation Permian
Dzhulfa Formation Permian
Gnishik Formation Permian
Gundara Formation Permian
Julfa Formation Permian
Karabaglyar Formation Triassic
Khachik Formation Permian

[2]

See also

Related Research Articles

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<span class="mw-page-title-main">Mount Aragats</span> Mountain in the Lesser Caucasus

Mount Aragats is an isolated four-peaked volcano massif in Armenia. Its northern summit, at 4,090 m (13,420 ft) above sea level, is the highest point of the Lesser Caucasus and Armenia. It is also one of the highest points in the Armenian Highlands.

<span class="mw-page-title-main">Hrazdan (river)</span> River in Armenia

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<span class="mw-page-title-main">Lesser Caucasus</span> Mountain system

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<span class="mw-page-title-main">Mountains of Armenia</span>

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<span class="mw-page-title-main">Gegham mountains</span> Mountain range in Armenia

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<span class="mw-page-title-main">Shirak Plain</span>

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References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Curtis, Glenn E. (1995). Armenia, Azerbaijan, and Georgia : country studies (1st ed.). Washington, D.C.: Federal Research Division. p. 25. ISBN   0-8444-0848-4. OCLC   31709972. PD-icon.svg This article incorporates text from this source, which is in the public domain.{{cite book}}: CS1 maint: postscript (link)
  2. Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.