Harrat ar Rahah

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 27.8°N
  • 36.17°E

  • 1950 m
    6396 ft

  • 231010
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Harrat ar Rahah.

The Global Volcanism Program has no Weekly Reports available for Harrat ar Rahah.

The Global Volcanism Program has no Bulletin Reports available for Harrat ar Rahah.

Harrat ar Rahah is the northernmost of a series of Quaternary volcanic fields paralleling the Red Sea coast of Saudi Arabia. The olivine basaltic volcanic field of Harrat ar Raha lies south of the Plain of El-'Hisma, south of the town of Tabuk. There are fewer young volcanoes in Harrat ar Rahah than in other harrats (lava fields) to the south. Harrat ar Rahah is erosionally divided into two segments and is about 35 km wide at its broadest extent on the west, narrowing down to less than a kilometer in width at the divide at Matar. Lava flows are more numerous in the southern segment, where they rise up to 550 m above the Cambrian sandstone plain. On the southern and SW sides the sandstones and the basaltic lava fields are dissected, and lava flows traveled mainly to the NE. Neumann van Padang (1963) in the Catalog of Active Volcanoes of the World speculated that the Israelite account in Exodus 19:16-18 might refer to an eruption from Harrat ar Rahah.

The Global Volcanism Program is not aware of any Holocene eruptions from Harrat ar Rahah. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Harrat ar Rahah page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Synonyms

Raha, Harrat er-
The large dark wedge-shaped area pointing to the lower right near the center of this Space Shuttle image is Harrat 'Uwayrid, a major volcanic field in NW Saudi Arabia. Harrat 'Uwayrid lies on the Bedouin pilgrim route to Syria and contains young basaltic scoria and tuff cones. Bedouin legends say that Hala-'l-Bedr erupted fire and stones in 640 AD, killing herdsmen and their cattle and sheep. Another volcanic field, Harrat ar Rahah (upper left), lies to the NW, left of the small light-colored desert area at the upper left-center.

NASA Space Shuttle image STS37-152-84, 1991 (http://eol.jsc.nasa.gov/).
The darker-colored area extending diagonally to the right down the center of this Space Shuttle image is Harrat ar Rahah, the northernmost of a series of Quaternary volcanic fields paralleling the Red Sea coast of Saudi Arabia. The geometrical outlines of the historical town of Tabuk (top-center), located on the road leading from Hijr to Damascus, can be seen to the north. There are fewer young volcanoes in Harrat ar Rahah than in other harrats (lava fields) to the south.

NASA Space Shuttle image STS37-152-177, 1991 (http://eol.jsc.nasa.gov/).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Brown G F, Schmidt D L, Huffman A C Jr, 1984. Geology of the Arabian Peninsula western shield area. U S Geol Surv, Open-File Rpt, 84:203: 1-217.

Neumann van Padang M, 1963. Arabia and the Indian Ocean. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 16: 1-64.

Volcano Types

Volcanic field

Tectonic Setting

Intraplate
Continental crust (> 25 km)

Rock Types

Major
Basalt / Picro-Basalt

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
98
98
421
647,572

Affiliated Databases

Large Eruptions of Harrat ar Rahah Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.