Siqaj Gr
Type Locality and Naming
The group includes essentially all the pre-rift Upper Cretaceous to Paleogene successions exposed in the Saudi Arabian Red Sea area (Adaffa Fm, Usfan Fm, and Matiyah Fm). Johnson et al. (1995) named the group after Wadi as Suqah near Jiddah.. Column: Red Sea Saudi Arabia. Type Section: The Suqah Group is defined in the Saudi Aramco onshore well Jiddah-1 (JIDH-1: 22°10′06.4″N, 39°12′39.1″E) between 1,918–3,662 ft (1,744 ft, 531.7 m thick), Saudi Arabian Red Sea
Synonym:
Lithology and Thickness
Upward succession of Adaffa Fm sandy claystone, Usfan Fm claystone, and Matiyah Fm volcanics. See component formations
Relationships and Distribution
Lower contact
The Group is unconformable onto Proterozoic basement.
Upper contact
The Group is terminated by the Red Sea Rift event; then overlain by the Early Miocene Teyran Gr (Al Waj Fm)
Regional extent
Saudi Arabian Red Sea area. Only the Adaffa Fm (lowest in succession) is recognized in the Midyan region near Gulf of Aqaba. " The pre-rift stratigraphy of the northern Red Sea coast is similar to that of the southern Gulf of Suez (Bosworth et al., 1998), which consists of the Naquus and Malha Formations and the Cretaceous to Eocene Raha, Wata, Matulla, Brown Limestone, Sudr, Esna and Thebes Formations. There is, however, no record of Oligocene sediments in the Gulf of Suez. The Suqah Group is equivalent to the Tawilah Group of west Yemen (Al-Subbary et al., 1998)" (Hughes and Johnson, 2005)
GeoJSON
Fossils
See component formations
Age
Depositional setting
Pre-rift fluvial-lacustrine then volcanics associated with onset of rifting?
Additional Information