C
Colin the Caver
Guest
Yesterday, due to the overnight weather on Saturday, I visited Seathwaite Wad Mines in Borrowdale in the Lake District. In a chamber just off the main passage of the Giles or Gills Stage there are some straws and the beginnings of some curtain formations. These formations are limited to a small corner of the chamber and there are some lesser formations in a small side passage.
Nothing strange there you may think, except that the fell, part of the Great Gable massive, is granite from valley floor to summit. To be accurate the granite is of the Borrowdale Volcanic Series and is the result of 4 million years of near continuous vulcanism.
Given that I cant see how there could be any limestone in the vicinity, what are the formations made from. Another question would be what other water soluble minerals can cause 'Stall' formation, ideally minerals that would be present in igneous rocks?
Nothing strange there you may think, except that the fell, part of the Great Gable massive, is granite from valley floor to summit. To be accurate the granite is of the Borrowdale Volcanic Series and is the result of 4 million years of near continuous vulcanism.
Given that I cant see how there could be any limestone in the vicinity, what are the formations made from. Another question would be what other water soluble minerals can cause 'Stall' formation, ideally minerals that would be present in igneous rocks?