Both occurred in the rocks of geological boundary between the Cretaceous and Tertiary periods 65 million years ago.

Cultural, religious, geological, and political boundaries go down in a few years, and the entrepreneurial spirit rises like Shiva triumphant over the fuming corpse of the old.

The Karsdorf fault forms the geological boundary with the Eastern Ore Mountains to the south.

The southern border of the county is approximately at the Allegheny Front, a geological boundary between the Ridge and Valley province and the plateau.

The Burgess Shale formed on a major geological boundary: at the end of the Precambrian era and the start of the Palaeozoic.

A major geological boundary between Devonian Old Red Sandstone and Carboniferous limestone is located in the park.

The geological boundary, the park's wide range of altitudes, and the climatic influence of the Gulf Stream combine to give the park a varied ecology.

The lake lies on the geological boundary between the sandstone mountains to the south and west and the limestone to the north.

Lough Leane and Muckross Lake lie across the geological boundary.

The western limit of the wood lies along the geological boundary with Devonian Old Red Sandstone.