The Ganos Fault runs through the hills above the Marmara coast — the same hills that give the villages of Şarköy district their terraced vineyards and steep descents to the sea. It is a segment of the North Anatolian Fault, the great right-lateral strike-slip system that has shaped western Turkey's geology for millions of years and generated some of its most destructive earthquakes.

In 1912, the Ganos section ruptured along its entire onshore length of approximately 45 kilometers. Right-lateral displacements — the western side moving southward relative to the eastern — reached as much as 5.5 meters at some measured locations. The surface-wave magnitude of 7.3 to 7.4 implied a total rupture length, including offshore extensions into the Marmara Sea to the east and the Saros Bay to the west, considerably longer than the visible land section. Geologists working the fault a century later found the physical evidence of that night still legible in the landscape: fault scarps, offset features, deformed sediments on the seafloor.

The earthquake did not finish with the shaking. Submarine landslides triggered by the rupture generated a tsunami — waves recorded at heights of up to several meters along the Marmara coast. Evidence of those seafloor landslides was later identified at the southern margin of the Tekirdağ Basin, in deep water offshore from the towns that suffered most.

The wave traveled. In the Bosporus Strait, more than 100 kilometers to the east, the tsunami destroyed a yacht moored at Paşabahçe. That detail — a pleasure craft reduced to wreckage in the strait between Europe and Asia — captures something of the earthquake's reach. The fault that moved beneath a rural coastal district sent its energy across an enclosed sea and made itself felt in what was, in 1912, one of the world's great cities.

The towns and villages along this stretch of the Thracian Marmara shore were, in 1912, largely Greek-speaking communities that had lived by fishing and farming — and increasingly by wine-growing — for generations. The earthquake struck without warning, as earthquakes do, in the hour before dawn when most families were indoors.

The span of the reported death toll — 216 to 3,000 — is itself a kind of testimony to the conditions that night. In rural Ottoman Thrace in the early twentieth century, record-keeping was uneven, communications were slow, and a disaster affecting scattered coastal villages could easily go undercounted. Some researchers accept figures toward the lower end of the range; others, drawing on contemporary accounts and the scale of destruction, argue the true toll was substantially higher. What is not in dispute is that communities along this coast lost people they could not replace — fishermen, farmers, families — in a matter of minutes.

The region did not return quickly to quiet. A significant aftershock of magnitude 6.8 struck on 13 September 1912, five weeks after the main event, when survivors were still assessing their losses and damaged buildings had not yet been made safe. The Balkan Wars broke out the following October, and the Thracian coast that had just endured an earthquake was soon enduring the displacement and violence of warfare as well.

The 1912 Mürefte earthquake remains among the most powerful recorded along the North Anatolian Fault's western extension. Modern seismological studies of the Ganos Fault have used it as a reference event for understanding the fault's behavior — the earthquake that, more than any other, revealed what this segment of the fault system can do. The coast it struck is now quiet vineyards and summer resorts. The fault is still there, as it has always been.