I’d just like to say thank you to everyone who ventured out into the cold to attend Andrew Mortlocks talk titled “ Building a history of the glory days of London Brick “
It was another great turn out….and now theres also a possible guided walk around Kings Dyke brickworks by Andrew.
So watch this space…
This leaflet The Stamford Stone Trail has been bought to my attention by one of the Stamford and District Geological Society’s members. I thought you would like to see it , so have put it on the website here for you to read..
p.s. Thank you David.B
The Mysterious Stone :
Firstly I’d Just like to say thank you to Dr Stephen Parry for talking to the SDGS. And to all those who attended our Winter Talk for December. It was another great turn out which was very pleasing to see considering the rather chilli winter evening conditions. For me personally id never realised the importance of this topic. And I would thoroughly recommend you access this link STRATEGIC STONE STUDY for more information.
The bite sized nibbles to eat upon arrival with tea and coffee to drink where welcome treats also.
And i would also like to thank Andrew who bought in what he thought might have been a Meteorite ( pictured above ) and was wandering if anyone present at the talk might have been able to shed some light on one of three of his mysterious stones. Which were found just outside Saffron Waldron in a farmer’s field?
Fortunately I have friend who is an avid collector of Meteorites with many years of experience. I took some photos of Andrews’s stone and sent them with as much information as Andrew could give me on his behalf and with consent. If you’d like to read below this is the response I received and have forwarded the information onto Andrew as requested.
“Two things are for sure. One… it doesn’t have any features (at all) that would indicate it to be meteoritic, and two… it didn’t originally come from anywhere near Essex.
it’s almost certainly part of the Essex post-glacial drift geology and I would suspect it came out of the boulder clay. That’s going to make it tough to identify from the appearance and described properties so far, since the drift geology has rocks that have come from as far away as Scotland and Scandanavia. There are also a great many rocks that have come from North Wales, since the Thames is believed to have been a huge river at one time that originally drained the Welsh Mountains before its headwaters were captured by the Severn River.
There are basalts, quartzites, and sarsens (a type of silicified sandstone) plus all kinds of other erratic’s – including a wide variety of igneous rocks. If the colour rendition in the pictures is accurate then it’s too dark to be a sarsen (they get to pale green but not beyond), and I would assume its rich in chlorite or olivine and of igneous origin. All of the likely candidates will be dense rocks. From the way it has broken it looks like it might be somewhat foliated and there doesn’t seem to be much difference in weathering colour between the broken and unbroken surfaces. On that basis, I would guess it to be a chlorite-rich schist of some kind. Chlorite is a relatively soft mineral, but the rock types it occurs in will not necessarily also be soft.
Although you describe it as weakly magnetised (as opposed to magnetic), that doesn’t narrow it down too much. That will likely be from a secondary mineral, and the only two common possibilities are pyrrhotite and some types of magnetite (the varieties known as lodestone). Either of those might be present in igneous rocks that have green mineralogy. Since pyrrhotite (the mineral itself) is generally only weakly magnetised, there would need to be a lot of it present in the matrix to influence the properties of the rock itself… so I would assume a small amount of secondary magnetite is present. “
Hope to see you at our next Winter Talk:
When entering working quarries and due to new strict guide lines regarding PPE (Personal Protective Equipment). Field trip organisers will advise to all members attending the field trip beforehand on appropriate clothing and footwear for the locality, time of year and as recommended Orange Hi-Vis Vests.
Failure by participants to wear recommended clothing and equipment may lead to their exclusion from the meeting. The Stamford and District Geological Society does not automatically provide personal protective equipment.
I hear a very good night was had by all at Tinwell Village hall for our latest Winter Talk by Dinah Smith on PAST AND FUTURE OF THE FENLAND: THE STORY OF THE RODDONS.
If anyone should have any comments to add about the evening then please post them here.
Here’s just one example that I found:
Description: A fossil cephalopod identified as Dawsonoceras annulatum with well-defined growth lines from the Much Wenlock Limestone Formation.
Age Data : Early Silurian 423 – 443 Ma
Geological Complex: Dawsonoceras annulatum
Associated Period: Silurian – Wenlock
I think it was a real treat for the society to have had a palaeontologist such as Dean Lomax to visit us and to talk about Dinosaurs of the British Isles. Without the publication of his NEW BOOK you just couldn’t comprehend the diversity of Dinosauria roaming our shores…
Barely a week seems to go by without the announcement of some new dinosaur discovery. We seem to have become accustomed to media reports highlighting some exciting aspect of the Dinosauria, often from faraway places and remote parts of the world. Whilst it is always intriguing to hear reports of fossil finds relating to prehistoric animals that once lived in the Arctic Circle or indeed, to see pictures of the newest type of feathered dinosaur identified from north-eastern China, it is worth remembering that dinosaurs, lots of them for that matter, once roamed the British Isles.
To hear about meat-eating dinosaurs from Swindon, Stegosaurs from Peterborough and Tyrannosaurs from the Isle of Wight left you gobsmacked.
Ive also heard on the grapevine that Dean might be working on another new publication about Marine Reptiles…..let’s hope we can get him booked in for next year..!
“Oh yes and there was the rather embarrassing scenario on my part moment, when Dean incorporated into his PowerPoint presentation and showed everyone my Theropods footprint I found at Saltwick Bay “…Ha Ha.
I’d just like to say a big thank you to all those who attended the Bantycock opencast mine field trip and to all those who put the time and effort into making this event possible. We had been informed on our arrival that the lifespan of the quarry is very much in doubt due to the difficulties and rising costs of extracting the Gypsum. So with planned visits to Bantycock next year I can’t stress enough…anyone wishing to come along should join the Stamford and District Geological Society as soon as possible. As there is a limit to how many members in the group can visit at anyone time.
Here are a few photos of ( Bantycock opencast mine ) just too show you some of the members finds from the day and how vast this opencast mine is.
It truly was a great day. There will be a field trip report to follow soon.