gus horsley
New member
I'm going to have to try and locate my geological maps of the area. can't tell you off the top of my head.
Mendip Geology
- Thread starter whitelackington
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whitelackington
New member
Just read in descent, big caves in sandstone.
maybe, just maybe, caveable passage could be in any rock, just that for 100years we have being looking in the two obvious places, sinks and reurgences.
maybe, just maybe, caveable passage could be in any rock, just that for 100years we have being looking in the two obvious places, sinks and reurgences.
graham
New member
whitelackington said:Just read in descent, big caves in sandstone.
maybe, just maybe, caveable passage could be in any rock, just that for 100years we have being looking in the two obvious places, sinks and reurgences.
I remember Bob Savage (Prof of Geology at Bristol) pointing out years ago that cave passage could be found in just about every rock type. I can show you sinks and resurgences in sandstone in England.
whitelackington
New member
Unfortuneately I haven't done this cave but it is one i want to go in.andymorgan said:
That's what it says in the book Welsh's Green Swallet,,,, Blue Lias Limestone.
So do any geologists know how thick is this bed of BLL and does it support other caves? :greed:
Les W
Active member
Apart from the Avens, ALL the passage in the limestone had to be blasted big enough for mortals.
Most of the cave is not in limestone at all, but has developed in a thick bed of blue/grey clay.
There are supposed to be some outrageous selenite crystals somewhere near the end, but I couldn't be bothered when I was there and I'm even less inclined to go back. Think "blue/grey colostomy crawl" with no real reward at the end (except you can stand up in a side aven at one point)
Most of the cave is not in limestone at all, but has developed in a thick bed of blue/grey clay.
There are supposed to be some outrageous selenite crystals somewhere near the end, but I couldn't be bothered when I was there and I'm even less inclined to go back. Think "blue/grey colostomy crawl" with no real reward at the end (except you can stand up in a side aven at one point)
