Serious CO2 problem in Nettle Pot

[troll]

Not given to the dynamics of the cave or any local factors,but given that there seems to be an increase of CO2 in general then it could be (with the deluge and saturation of rainfall that we have experienced over the last 6 months)the levels of detritus(washed in) and from previously dry areas of caves that have become wet has kick started a reaction that involves dissolved carbon dioxide,this in turn reacts with water to form carbonic acid carbonic acid reacts with limestone which forms bicarbonates and carbonate ions.Bicarbonate is a resevoir for carbon dioxide(in breathing it is the bicarbonate ion that is responsible for the expeling of co2).How this carbon dioxide is then released is unknown to me but it could be down to increased bacterial/microorganism activity.Rehydration of archeobacteria?? :alien: 

 

[langcliffe]

Thanks for your response. I am reasonably familiar with the various aspects of the carbon cycle, but I was hoping for a reply from someone who was familiar with the specifics of Nettle Pot.

 

[droid]

Plenty of lead rakes in the area....decomposing stemples?

 

[pwhole]

Is it possible that the vague connection with Oxlow through the lava-filled bedding plane allows CO2 to pool on the 'less active' half of the system? It seems Nettle has far fewer water inlets than most, isn't on any known mineral vein, is a 'sealed' system (other than the Oxlow connection), is at a different axis to most caves in the area and the flats are also at the same altitude of the roof of Eldon Hole, along the same lava bed.

I'm not saying any of these are causes, just that they're factors in Nettle's development that may encourage this unusual behaviour. It's just a cavity in solid limestone, so I would have thought far more likely to suffer from trapped gases than many sites nearby.

 

[bograt]

I think it may be a problem with the whole hill, wasn't there an issue down JH recently?? Oxlow - Maskhill - Giants won't suffer because there is sufficient air circulation, Maybe Rowter and Winnats Head are next??

 

[langcliffe]

Decomposing vegetable matter may well be a source, Droid, but Bograts' reference to the lava and ash beds lead me to wonder if the CO2 is escaping from those as well. I take pwhole's point about it pooling in the deepest part of a fairly inactive system.

 

[bograt]

Sorry, Langcliffe, the references to Lava and Ash did not come from me, though I could provide geological surveys if you really think its relevant.??

 

[langcliffe]

Sorry, Langcliffe, the references to Lava and Ash did not come from me, though I could provide geological surveys if you really think its relevant.??

Sorry, bograt - old age and senility creep on!

 

[bograt]

You're lucky they're only creeping, with me they're rushing headlong!!

 

[chrisporcheret]

Was in nettle a few weeks ago.
Co2 was fine. The only moment we had was myself flipping the lid open to discover a grumpy Bullock 20 feet away hoofing the floor 

 

[droid]

That could cause a gas problem....

 

[Dave Smith]

02.06.13 - Elizabeth-Beza Exchange. No noticeable change in air quality from surface, no problems with bad air encountered. No CO2 readings taken.