The Chedabucto Fault is a fault that divides Mainland Nova Scotia from the Minas Basin

Minas Basin

The Minas Basin is an inlet of the Bay of Fundy and a sub-basin of the Fundy Basin located in Nova Scotia, Canada. It is known for its extremely high tides.- Geography :- Boundary :...

 in the west to Chedabucto Bay

Chedabucto Bay

Chedabucto Bay is a large bay on the eastern coast of mainland Nova Scotia between the Atlantic Ocean and the Strait of Canso next to Guysborough County...

 in the east into the Avalon

Avalonia

Avalonia was a microcontinent in the Paleozoic era. Crustal fragments of this former microcontinent underlie south-west Great Britain, and the eastern coast of North America. It is the source of many of the older rocks of Western Europe, Atlantic Canada, and parts of the coastal United States...

 zone in the north and the Meguma Zone in the south .The Avalon and Meguma

Meguma terrane

The Meguma terrane is a terrane exposed in southern Nova Scotia, that became joined to the present North American landmass as part of the Appalachian orogeny. Composed largely of Cambrian to Ordovician sedimentary deposits, it is joined to the Avalon terrane along the Minas Fault Zone, which runs...

 Zones are different because they belonged to different land masses that were widely separated from one another. The Avalon Zone was a part of Laurasia

Laurasia

In paleogeography, Laurasia was the northernmost of two supercontinents that formed part of the Pangaea supercontinent from approximately...

, while the Meguma Zone was a part of Gondwanaland.It marks the southern margin of the Cobequid Mountains

Cobequid Mountains

The Cobequid Mountains, also sometimes referred to as the Cobequid Hills, is a Canadian mountain range located in Nova Scotia in the mainland portion of the province.-Geologic history:...

.The Cobequid

Cobequid fault

The Cobequid Fault is a fault that is the extension of the Chedabucto Fault. This fault runs from Truro to Cape Chignecto south of the Cobequid Hills.Both the Cobequid fault and the Chedabucto Fault form the Minas Fault zone splitting Nova Scotia into the Avalon Zone and the Meguma Zone...

-Chedabucto Fault Zone is the most prominent geological feature of Nova Scotia.