Table 1 Comparison between several Arabian Harrats in western Saudi Arabia
From: Spatio-temporal forecasting of future volcanism at Harrat Khaybar, Saudi Arabia
Harrat Rahat | Harrat Kura | Harrat Khaybar | Harrat Ithnayn | Harrat Lunayyir | Harrat Hutaymah | |
|---|---|---|---|---|---|---|
Location | SE of Medina City | ~ 137 km NE of Medina City | ~ 200 km NW of Medina City | ~ 95 km SE of Hail City | ||
Size | 23,250 km2 | 2512 km2 | 14,064 km2 | 3988 km2 | 3575 km2 | ~ 900 km2 |
20,564 km2 | ||||||
Stratigraphic classification | - Shawahit (10–2.5 Ma) - Hammah (2.5–1.7 Ma) - Madinah (1.2-Present) | -Kura | - Jarad - Mukrash - Abyad | - Mukrash - Abyad | - T - Q1 - Q2 - Q3 - Q4 - Q5 | – |
Timing | 10 Ma –Present | 11–5 Ma | 5 Ma – Present | 3 Ma – Present | 600 Ka - Present | 850 Ka - Present |
Volcanic characteristic | - Scoria cones - Shield volcanoes - Tuff cones - Domes - Maars | - Scoria cones - Shield volcanoes | - Scoria cones - Shield volcanoes - Domes - Tuff cones - Composite cone | - Scoria cones - Shield volcanoes | - Scoria cones - Shield volcanoes | -Tuff cones. - Tuff Rings - Spatter cones. |
Rock type | - OTB - AOB - Benmoreite - Hawaiite - Mugearite - Trachyte | - AOB - Basanite - Hawaiite - Phonolite | - OTB - AOB - Benmoreite - Hawaiite - Mugearite - Trachyte - Comendite | - OTB - AOB - Hawaiite | - AOB - Basanite - Hawaiite | - AOB - Basanite - Tephraite |