field notes 2018Posted by Vince Simmonds Fri, May 18, 2018 06:44:17
17th May 2018: with Roz, Jonathon, Jake, Alex and Tav.
Jon and Tav, digging, Alex loading the skip, Jake and me hauling the load, Roz emptied it, adding the spoil to the burgeoning heap.
A lot of sediment was shifted, and the hole grows bigger and deeper!
field notes 2018Posted by Vince Simmonds Wed, May 16, 2018 06:29:31
May 2018: with Jake, Tav and Duncan.
We did what we set-out to
do. The loose rocks, plus a few others, were removed from the top of the dig, we
also cleared a quantity of fine sediment as well. This should enable us to angle
the slope down, allowing the digging to go deeper. Peering down from the top, it’s
a big hole.
field notes 2018Posted by Vince Simmonds Fri, May 11, 2018 06:32:57
with Jake, Tav, Brockers, Mike, Jonathon and Duncan.
While Tav took Jon and Mike
on a quick detour to 19, Duncan tagged along as well, Brockers, Jake and myself
carried on to Sand Dig.
Brockers digging, Jake passed
the filled buckets up to me and I emptied them into the skip. The others soon arrived.
Duncan positioned himself on the slope, Jon hauling up-slope to the top, Tav and
Mike were on spoil dispersal.
A lot of sand was shifted,
a large boulder re-positioned, and there’s still more sand to remove. As the session
progressed the sand became wetter, whether that is of any significance, who knows?
field notes 2018Posted by Vince Simmonds Fri, May 04, 2018 06:32:20
May 2018: with Jonathon, Alex, Tav, Brockers, Mike and Ray Deasy.
Another fine assemblage of
willing diggers gathered, destined for the Sand Dig.
Alex digging, aided by Brockers,
I was loading the skip, Ray on the slope, leaving Tav, Jonathon and Mike to manage
To say it was a jovial evening
with plenty of banter uttered would be an understatement, Ray was prompted to suggest
that the dig be named “Windrush”, very topical too!
However, at the end of the
session, a significant quantity of spoil, had again, been removed from the dig,
more good progress achieved.
field notes 2018Posted by Vince Simmonds Wed, May 02, 2018 06:32:58
May 2018: with Jake, Tav, Jonathon, Duncan and Mike.
A bigger turn-out than expected
for this digging session.
At the Sand Dig, Mike digging,
Tav shifting the filled buckets back up to Jonathon, who was loading the skip and,
in between time, dismantling some of the old spoil heaps at the top of the dig.
I was on the slope, helping to haul the skip, Jake and Duncan, sharing the hauling
and spoil dispersal tasks.
We need plenty of room at
the top to slope down, allowing the digging to go deeper, hence, the moving of some
of the old spoil heaps. The rocks will be useful for building walls later.
By the end of the session,
a large quantity of spoil had been removed but, there’s plenty more to shift.
field notes 2018Posted by Vince Simmonds Fri, April 27, 2018 07:33:01
26th April 2018: Brockers, Nick, Jake, Jonathon,
Roz, Duncan, Mike and Alex.
A big team assembled this
evening, keen to get the Sand Dig re-started, it might have been bigger had others
been able to attend. Roz and I had arrived a little late, the rest of the team were
ready, so off they went with the skip and ropes, Brockers had brought along some
ropes as well.
At the dig, Jake, Nick and
Brockers were digging and emptying the filled buckets into the skip. Hauling was
carried-out by Jonathon and Mike; the rest of the team were assigned the task of
spoil dispersal. Water was poured down the slope, an effort to ease the passage
of the skip, it worked for a while, on the down-side, it also had the effect of
muddying the rope making it difficult to grip. One of the spare ropes was knotted-up
and replaced the slippery rope, making the haul a bit easier.
At the end of the session,
a lot of spoil had been shifted. The sediment comprises mostly silty, fine to medium
grained sand with the occasional cobble of limestone. There’s plenty more of it
to shift too!
field notes 2018Posted by Vince Simmonds Fri, April 20, 2018 07:33:53
April 2018: with Nick, Duncan, Brockers, Jonathon,
Mike, Claire Cohen and Ray Deasy.
A good team assembled for this
evening’s foray. As there were plenty of people to carry-on with the dig down
the rift, I decided to go along and check the current state of the Sand Dig,
Nick came along too. We’ve had a spell of drier weather recently, and surface
temperatures are rising. It had been noticeable on the trip through Chamber 20
that water flows had decreased, it was not a surprise to find that the Sand Dig
was now, dry. There had been quite a slump of sediment into the end of the dig,
as we were there, Nick and I started to clear-out some of the rocks. A skip and
hauling rope will need to be organised ready for the digging activities to
resume next week.
It was soon time to re-join
the rest of the team, they had continued clearing the spoil from the fissure leading-off
the rift. When they had emptied the last few bags and climbed the slope, we exited
field notes 2018Posted by Vince Simmonds Fri, April 13, 2018 06:49:58
12th April: with Tav, Jonathon,
Brockers and Duncan.
Five go digging! I
couldn’t make the trip last week, but others did and had cleared some of the
bang debris, the flake had been successfully fragmented. This
evening, we continued to clear the accumulation of spoil from the slowly
expanding alcove/rift. The digging is the easy bit, the removal of spoil along
the rift is awkward and quite technical, five people is the minimum number required
to make digging effective. The spoil mostly comprises gravel and cobbles of
conglomerate and limestone with the occasional boulder, these were soon reduced
to a more manageable size with the small sledge-hammer. At the end of the
session, I could stand-up in the rift and turn-around. There remains, plenty of
spoil for another digging session, maybe we will be able to make a better assessment
of the prospects then.
Some drier, warm weather is
forecast, we might consider going to have a look at the sand dig soon.
field notes 2018Posted by Vince Simmonds Fri, March 30, 2018 14:32:46
This echinoid was recovered from the spoil heap of a prehistoric ditch being excavated in Sherborne, Dorset recently.
Micraster has a characteristic heart-shaped test, covered in small bosses and usually found in strata of Cretaceous age. Interestingly, the underlying geology at the Sherborne site is Jurassic, this poses a question: does the 'heart of stone' represent a placed deposit? Unfortunately, it was found 'out of context' so one cannot be certain.
field notes 2018Posted by Vince Simmonds Thu, March 22, 2018 06:21:02
21st March: with Roz.
A trip to apply some IRS. As usual, a pleasant trip though Chamber 20, a fine section of Mendip cave passage. There is still a good trickle of water in places.
At the dig face, 4no. awkward holes, 500mm x 12mm, drilled and filled, a loud retort and all was well.
Passing the Hunter's Lodge Inn, it would be churlish not to stop!
field notes 2018Posted by Vince Simmonds Fri, March 16, 2018 06:58:08
15th March 2018: with Duncan, Jonathon, Max Fisher, Tav, Mike M and Leonie (MCG). Alex came too!
While us headed-off to the digs, Alex did his own thing, mooching around 20, etc. I went with Leonie to look at the 'Sand Dig', the others slid down the rift to go digging.
At the Sand Dig, water levels were higher than the last visit, a consequence of recent heavy rain. It could be a while before it dries enough for digging.
We left the Sand Dig and joined the rest of the team to help with the digging. At the end of the session, the dumped spoil had been removed from the alcove and the narrow rift beyond could be seen. Progress forward will require the application of some induced rapid speleogenesis (IRS). That will have to wait until next week after I return from the Peak District.
It was a fine evening's activity!
field notes 2018Posted by Vince Simmonds Tue, March 13, 2018 06:16:02
While out on a regular early morning (c.05:25am) walk with the dog I made the following observation. After I leave home, I pass close to some residential properties, where there is constant artificial lighting, here early morning birdsong is well underway. When I reach the lane and walk-up the hill, there is only natural light, the birdsong has not yet begun. I return along the same route, 20 minutes or so later, the birdsong is just getting underway in the naturally illuminated lane.
An example of how light pollution affects the birds natural daily cyclic rhythm.