What makes Anatolia a region

The block, and the two faults that carry it

Anatolia names a peninsula and a tectonic plate, and the two sit on the same ground. The GONAF observatory gives the North Anatolian Fault Zone some 1,200 kilometres from eastern Anatolia to the northern Aegean, moving at 20 to 30 millimetres a year and moving fastest at its western end. The East Anatolian Fault holds the other boundary, along the line where the Arabian plate comes up from the southeast. Pushed north by Arabia and pulled southwest by the Hellenic subduction zone, the block between the two turns counter-clockwise as it travels west.

That motion comes out in a pattern the record can follow. After the Erzincan earthquake of December 1939 in the east, ruptures ran systematically westward along the zone for about sixty years and reached the Sea of Marmara with the İzmit and Düzce earthquakes of 1999. For the earthquake of 17 August 1999 the United States Geological Survey maps a surface rupture about 145 kilometres long, in five segments, from west of the Hersek delta to southwest of Düzce.

The southeastern boundary produced the sequence of 6 February 2023. The same survey timestamps the Pazarcık earthquake, magnitude 7.8, at 01:17:34 UTC, and the Elbistan earthquake, magnitude 7.5, about nine hours later, both within the East Anatolian fault system.

Where the peninsula stops

Three sides are water and settle themselves. Encyclopaedia Britannica describes Anatolia, also called Asia Minor, as the peninsula that forms the Asian portion of Türkiye, bounded to the north by the Black Sea, to the east and south by the Southeastern Taurus Mountains and the Mediterranean, and to the west by the Aegean and the Sea of Marmara. The fourth side is drawn in more than one place. Britannica's article on the country treats the mountainous east as part of the Armenian Highland rather than of the peninsula. The congress of geographers held at Ankara in 1941 named seven regions still used for statistics, three of them after their position in Anatolia, and its Eastern Anatolia reaches the borders with Iran, Armenia and Georgia. Mount Ararat, the country's high point at 5,137 metres, stands inside Anatolia on the second reading and beyond it on the first. The catalogue records both and settles neither.

The water in the middle

The Bosphorus, the Sea of Marmara and the Dardanelles separate the peninsula from the ground the country holds in Thrace, which the Library of Congress country study puts at 3% of the total area and more than 10% of the population. Passage through that water runs on a convention signed at Montreux on 20 July 1936 and in force from 9 November of the same year. Merchant vessels have complete freedom of transit in time of peace. Warships of powers with no Black Sea coast are held to an aggregate 30,000 tons in the Black Sea, raised to a maximum of 45,000 in the circumstances the text sets out, and to a stay of twenty-one days whatever the object of their presence there. Nothing has replaced the regime since.

A record filed on both sides of the line

The country record files the continent as Europe and the region as Anatolia. The seat of government is inland at Ankara, and the republic dates from 29 October 1923. Membership runs in both directions from there: the Council of Europe from 9 August 1949 and NATO from 18 February 1952, alongside the Organisation of Islamic Cooperation from 25 September 1969 and the Organization of Turkic States. A customs union with the European Union has been in place since 1995, candidate status was granted at the Helsinki European Council in December 1999, and accession negotiations were launched on 3 October 2005. The M49 standard of the UN Statistics Division files the country under Western Asia, and says of its own groupings that they are a statistical convenience carrying no political meaning. The IANA time zone database keeps Europe/Istanbul as the country's zone and Asia/Istanbul as a link to it. The name printed here is the one the United Nations registered after a letter from the Turkish foreign minister reached the Secretary-General in June 2022.

Where the edges are argued

A region in this catalogue is a position on the ground rather than a list of memberships, and on that test the peninsula holds one state and the file has one country. Other schemes cut elsewhere. M49 places the country in Western Asia beside the Levant and the Gulf. The Council of Europe, the customs union and the accession process treat it as European, and the record's continent field follows them. Some geographies file East Thrace with southeastern Europe and leave the rest in Asia, which splits the state across two regions rather than choosing one. Each answers a different question about the same ground, and the page for the country states the grouping applied to it.