Rift

My granddaughter's behaviour has caused a rift in our family.

A deep rift opened up between them.

Sami's drinking caused a rift in his marriage.

The current Kilauea lava flow, emanating from one of about two dozen volcanic fissures that opened in the ground, has been going on for 93 days straight, marking the longest nonstop eruption on record from Kilauea’s lower East Rift zone.

The rift between Tom and Mary seems permanent.

Investigators base their conclusion on an analysis of a 60,000-year-old sediment core extracted from the bottom Lake Tanganyika in the East African Rift Valley, which borders Burundi, Democratic Republic of the Congo, Tanzania and Zambia. The lake is the world's second deepest fresh water lake.

The Grand Canyon is a rift in the Earth's surface, but is smaller than some of the undersea ones.

Where ashes are heaped in drifts / Over vineyard and field and town, / Whenever he starts and lifts / His head through the blackened rifts / Of the crags that keep him down

As far as the eye can reach is a sea of green tree tops, with occasionally a deep rift where there is a chasm. Here and there are silver threads where the rivers wind in deep gorges through the forests.

Far back in the dim geologic ages, when the sediments of the old seas were being gathered and outspread in smooth sheets like leaves of a book, and when these sediments became dry land, and were baked and crumbled into the sky as mountain ranges; when the lava-floods of the Fire Period were being lavishly poured forth from innumerable rifts and craters;[…].