August 5, 1766 Earthquake: Western, Turkey

1766 Aug 5. A major earthquake in the west of the Sea of Marmara completed the destruction caused by the shock of 22 May and enlarged the affected area west of Rodosto (Tekirdag). The region between Silivri and Tenedos (Bozcaada) was ruined with loss of life. The district of Ganohora (Tekirdag) was totally destroyed and that of Gelibolu suffered heavy losses. The castles along the Dardanelles up to Sedd ul-bahr and in Evrese were damaged. Damage extended to Bursa, Istanbul, throughout Thrace to Edirne, and in the district of Biga. The shock was strongly felt in Athos, Thessaloniki, Aydin and Izmir and was perceptible throughout the Balkan peninsula as far as the Carpathian mountains. (reference #14000)

1766 Aug 5. A second ,najor earthquake, this time in the west of the Sea of Marmara, con1pleted the destruction caused by the shock of 22 May and enlarged the affected area west of Tekirdag to the region of Ganos (Gazikoy) and Gelibolu, with loss of life. Damage extended to Bursa, Istanbul, throughout Thrace to Edirne and the district of Biga. The shock occurred on 25 July (O.S.), or Tuesday 28 Safar a.H. 1180 and the time was 5 h 30 m daytime (by the Islamic clock). The report of the British ambassador from Istanbul agrees, saying that it happened at 12 h 30 m, midday. It lasted less than a minute and was followed by two further shocks the same evening. Worst affected was the area between Tekirdag and Murefte, to the southwest of Istanbul. A contemporary document confirms that in the district of Ganochora only one house in ten was left standing […] Other sources confirm that much of Ganos (Gazikoy) was destroyed by the earthquake and the fire that followed. In Hora (Hoskby) nearly all of the 800 houses of the town were wrecked, with most of the population buried under the ruins […] Damage in Istanbul was not very serious and is reported most con1pletely in the contemporary European press It is said that the earthquake caused some damage in Bursa, and also in Izmit, Yalakabad (Yalova) and Karamtirsel, where the courthouse was destroyed and four people killed (reference #9116)

Note: lat/lon approximation based on description