The Garden Wall
The Garden Wall capped by Bishop’s Cap rises above Going-to-the-Sun Highway in Glacier National Park, Montana. The wall is a mountain landform called an arête which is a sharp ridge separating two cirques or glacial valleys. The term has it origin from an old French word which means fish backbone or fishbone. The Cliffs are formed by Middle Proterozoic, mildly metamorphosed sedimentary rocks between 1.6 and 0.8 billion years old. The rocks at the top of the ridge and that form the Bishop’s Cap are argillites, siltites; quuartzites and carbonates that geologist call the Snowslip Formation. The bulk of the ridge is madeup of thick beds of dolomite and limestone with thin shale and silt interbeds that belong to the Helena (also called Siyeh)) Formation.
The Garden Wall
The Garden Wall capped by Bishop’s Cap rises above Going-to-the-Sun Highway in Glacier National Park, Montana. The wall is a mountain landform called an arête which is a sharp ridge separating two cirques or glacial valleys. The term has it origin from an old French word which means fish backbone or fishbone. The Cliffs are formed by Middle Proterozoic, mildly metamorphosed sedimentary rocks between 1.6 and 0.8 billion years old. The rocks at the top of the ridge and that form the Bishop’s Cap are argillites, siltites; quuartzites and carbonates that geologist call the Snowslip Formation. The bulk of the ridge is madeup of thick beds of dolomite and limestone with thin shale and silt interbeds that belong to the Helena (also called Siyeh)) Formation.