Persian Gulf Basin of approximately 93000 square miles. The name Persian Gulf in most cases refers not only to the Persian Gulf but also the Gulf of Oman, the Strait of Hormuz and various outlets that are linked to the Arabian Sea. The Arabian Plate tectonic origin is grouped into six phases which contributed to its current geology: The early Precambrian (from 800 to 650 Ma) is a compressional phase where a series of islands-arcs and micro-continent terrane accreted to form the oldest portions of the Arabian Plate (Gondwana). The development of Hormuz saltbasin was a consequence of the last Precambrian orogenic event.
Quoin Island (Persian Gulf) Quoin Island (Persian Gulf) Quoin Island (also known as "As Salamah Island" and "Great Quoin Island") is the largest of three islands of the As Salamah Archipelago. It is the northernmost landmass of Oman and the traditional "way point" used by ships to define the entrance or exit from the Persian Gulf. Once a ship is declaired a position of "Passed Quoin Inbound" the insurance rates for the ship will increase. The island has a triangular outline, is about 770 meters long and up to 530 meters wide, yielding an area of about 22 hectares. Quoin Island, Oman, is not