Happy #earthday, from the #trgeo! The Bergeron Cliffs are comprised of a think layer of sandstone, in The Kaskapau Formation. This formation is up to 900 metres thick, and is composed mainly of marine shales and mudstones, interrupted by five deposits of thick-bedded sandstone, some of which represent ancient coastal beach environments. One of these sandstone tongues, the Tuskoola Sandstone, forms the Bergeron Cliffs. The cliffs are a fluvial (deposited by rivers) coarse sandstone unit which has cut into the marine shoreface sandstones. The prominent undulating erosion surface at the bottom of this unit, and the noticeable thickness variations, are typical of fluvial channels. The fluvial sandstone, being much harder than the underlying shoreface sandstone, allows for the formation of vertical cliff faces, and overhangs below it. . . #geology#sandstone#bergeroncliffs#cliffs#kaskapauformation#hike#tumblerridgegeo#tumblerridge
The view from the Bergeron Cliffs a great view south into the Murray River valley, towards the Hart Range of the Rocky Mountains. Located on the southern slopes of Mount Bergeron, the cliffs are part of the Kaskapau Formation, which is formed from sediments deposited in the Late Cretaceous Period (about 93 million years ago). Thanks to Birgit Sharman for the images!