Porak

Coordinates: 40°01′N 45°47′E / 40.017°N 45.783°E / 40.017; 45.783
Source: Wikipedia, the free encyclopedia.
Porak
Axarbaxar
A pyroclastic cone of the Porak volcanic field.
Highest point
Elevation2,800 m (9,200 ft)
Listing
Coordinates40°01′N 45°47′E / 40.017°N 45.783°E / 40.017; 45.783
Geography
Porak is located in Armenia
Porak
Porak
Location on Armenia–Azerbaijan border
Porak is located in Azerbaijan
Porak
Porak
Porak (Azerbaijan)
CountriesArmenia and Azerbaijan
Parent rangeVardenis
Geology
Mountain typeStratovolcano
Last eruption778 BCE ± 5 years

Porak or Akharbakhar ("gutted belly" in Azerbaijani

satellite cones and fissure vents lie on the flanks of the volcano.[2]

The Porak volcano itself and the third stage has been dated 15 ± 15

K-Ar dating.[1] Two long lava flows, one of which 21 km long, stretch from the field north and northeastwards. There are thermal springs in the area, and the Middle Pleistocene Khonarassar fault area lies to the north of the Porak centre.[3][4] The Karkar volcanoes are situated in the same region.[5] The complex is built on partly sedimentary rock and partly volcanogenic Late Cretaceous and Eocene series with Paleogene intrusions.[1]

Description

There are four stages of

trachyandesitic lava flows, the oldest composing the Porak volcano itself and the younger three derived from cones and fissures.[1] Two lava flows overlay Sevan Lake deposits with thin soil cover form an early Holocene stage. The second stage forms lava flows entering Lake Alaghel and is devoid of soil cover.[3]

Several archaeological sites (one of these dated by radiocarbon analysis on charcoal to be no younger than 3080±40 BP-3200±40 BP) are constructed on the two oldest Holocene stages but not on the most recent stage. Third-stage lava flows run at the edge of one of these sites which was constructed on lavas from the previous two stages, suggesting that the site was affected by historical volcanic activity. There is also evidence of strong earthquake activity 6640±90 BP and between 782 and 773 BC.[3] The volcano may have potential for geothermal power generation but is also a potential threat to several villages in the area.[5]

Khorkhor inscription

The

Argishti I of Urartu records the conquest of the city of Behoura, records that during the siege the town was destroyed by an earthquake and eruption of "Mount Bamni". Historians consider it likely that Porak volcano is Mount Bamni and that Behoura was one of the archeological sites in the area.[3] The location of Behoura is controversial, however. The identification of another inscription by Argishti's successor, Sarduri II, gives evidence of another eruption of Porak.[6][7]

Older evidence of volcanic activity, including

Hasan Dagi, respectively).[8] It is not entirely clear which eruption is depicted by the Porak petroglyphs.[5]

References

  1. ^
    S2CID 131294219
    .
  2. ^ "Porak". Global Volcanism Program. Smithsonian Institution. Retrieved 20 July 2015.
  3. ^
    ISSN 0377-0273
    .
  4. ^ "Porak". Search. Volcano Global Risk Identification & Analysis Project. May 2, 2012. Retrieved July 21, 2015.
  5. ^
    ISSN 1871-1014
    .
  6. ^
    ISSN 0377-0273
    .
  7. ISSN 0377-0273
    .
  8. PMID 26745626
    .
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