igs fully equiped

The “fully equipped geologist” meme is the latest sweeping the geoblogosphere, started by Geotripper,with follow ups so far from Johannes Lochmann, Kim Hannula, and Silver Fox.

The above photo is typical autumn/spring wear. Note the inherent lack of trust in modern gps technology and the back-up folded ordnance survey map.

Hair: Cut short, I just get annoyed when it gets too long.

Sunburned Peeling Nose: Has been known, and burnt top of the ears as hair is short. Hence I prefer to wear the bush hat, keeping sun off nose, ears and back of the neck. I’m not one for wearing sun cream but do tend to cover up.

Beard: I like to call it ‘designer stubble’. Gets trimmed when gets to the itchy stage but I don’t like clean shaven any more.

keele geology logo
T-shirt and Logo: Tend only to wear t-shirts as a base layer unless very hot. Favourite one is a Keele Geology Society one from years ago that has the “Geologists like a nappe between thrusts” strapline on the back. The fleece in the above image has the Keele GeoSoc logo (just behind the GPS). I tend to wear long sleeved shirts in the field but with the cuffs rolled up.

Vest: I often wear what Americans call a vest (in the UK a vest is an undergarment – see pants). It is from a visit to South Africa and the pockets are loaded with stuff particularly when running field courses. When cooler will wear a fleece, see above. For some reason I hate to have my lower arms covered. I’ll only have the sleeves down when my hands turn purple from the cold and gloves are needed as well. I’ll also only wear waterproofs when it is really wet, the bush hat and fleece will do in most weathers for me. I also have high visibility jacket / vest for work on roadsides and in quarries.

Things in the Vest: The jacket pockets contain compass-clinometer, pencils, pens, eraser, chalk (very useful for drawing on outcrops and will wash off in the next rain), mobile phone, notebook, handlens, grainsize chart, whistle (for attracting students attention), lighter and cigars (I only smoke in the field). When not working, the jacket may also contain a hip flask with a wee dram or two of the scottish nectar. The GPS may also be clipped to the jacket if not wearing a back pack.

Belt and Buckle: Tends to be a nylon belt with plastic clip buckle. Mainly used for supporting camera bag if not carrying large rucksack. Will use a leather belt for hammer if not carrying rucksack or camera tripod is in ice axe holder.

Pockets: Keys, wallet, handkerchief, comb, penknives, loose change. I tend to wear cargo trousers in the field and carry marker pens in the side pockets.

Rock Hammer: Faithful old 2.5 pound Whitehouse hammer I have had for nearly thirty years, since I was an undergraduate.

Hands: Map case. Maps, field guide, A3 paper for drawing explanatory diagrams and the A3 plywood mapping board I’ve also had since an undergraduate. If I’m using a large notebook this goes in here too.

Legs: Like Johannes and Silver Fox I don’t wear shorts in the field. Too much risk from thorn bushes, sunburn and biting things.

Pants: As with vests, in the UK pants are undergarments. My field trousers are typically cargos, the extra pockets on the legs are useful for marker pens and / or field notebook. I do have a pair where the bottom sections can be unzipped but I can’t see me using this facility.

Shoelaces: Sometimes knotted, and typically burnt at the ends with my lighter to stop the fraying.

Socks: Thin socks under thick walking socks. This prevents blistering as slippage is between sock layers rather than sock and foot.

Boots: Choice of three, heavy duty for winter, lightweight for spring, and ultra-lightweight fell-running boots for summer. The first two pairs have ankle support as have sprained my ankles too many times in the field.

Ironclad Bladders: Almost mandatory. I tend not to drink much in the field (the platypus water system in the photo is largely for sipping unless very hot. I also tend not to eat in the field. Cigars are an appetite suppressant. Students often have to remind me to stop for lunch as I don’t have any. If I do take sandwiches then they are eaten by 10am.

Brunton Compass: We tend to use Silva/Sunnitos rather than Bruntons this side of the pond.

Eyes: Sunglasses are rarely worn, but we do get sunshine sometimes in the UK. Obviously safety goggles when hammering.

Brain: Alert. The field is my favourite place to work. Might start to wander slightly after the pubs open.

Hat: Depending on the weather / time of year / country either go bare headed (but thinning hair leaves one susceptible to sunburn), favourite South African bush hat (above) when sunny, Irish flat cap when cold or baseball cap as last resort when windy.

Backpack: I usually start off a field course with a full backpack with first aid kit, waterproof jacket and trousers, gloves, camera equipment, platypus water pouch and what ever else I think might come in useful. By the end of the field course I just carry what ever I can fit in my pockets and mapcase (which is surprisingly quite a lot). I also now have a Lowenpro backpack just for my camera gear. The bottom section takes my Canon 5D & lenses, batteries and data cards, the top section takes my G10 plus gigapan robotic mount. The outside has strapping for a tripod and just enough room for a water bottle.

 

Ecton Copper Mine in Staffordshire was in its heyday in the late 18th Century, both the deepest mine in Europe but also the most productive copper mine. The brecciated pipe-like chalcopyrite body was mined out forming an irregular chamber up to 180m by 35m wide.

ecton mine section

The vast majority of the mine complex is now flooded but the upper part can be accessed via Salt’s Level which was driven as an adit from the dressing tables on the hillside to the main shaft below the Boulton & Watt steam engine driving winding gear on the top of the Ecton Hill.

ecton salt's level entrance

The host rock is Dinantian Carboniferous Limestone which generally is quite flat lying but in the vicinity of the orebody becomes tightly folded. Although the ore genesis is not well known, mineralisation here appears to be associated with localised folding.

ecton dipping limestone

Salt’s Level was driven by two brothers called Salt, driving a metal spike into the limestone with a sledgehammer to create shot holes and then blasting with black powder. Ecton was one of the first recorded mines to use black powder as a charge.

ecton salt's level

They drove the shaft at about 2m a week, straight to the main winding shaft with a quick detour when they crossed galena and chalcopyrite bearing veins.

ecton galena vein

ecton copper bearing vein

The main winding shaft.

ecton up winding shaft

ecton down winding shaft

Salt’s Level then connects to the top of the Ecton pipe orebody (the section shown on the mine plan above). This orebody had been worked downwards from an exposure on the top of the hill. (The metal in the centre of the image is an old tractor dumped by a farmer down the shaft).

ecton main ore pipe

Although the main orebody is well below this level, there is still evidence of copper mineralisation.

ecton exotic flowstone

ecton copper traces

The Salt’s Level can be accessed by contacting the Ecton Hill Field Studies Association who also run sessions for school children on the geology of Ecton and the chemistry of ore minerals (and black powder!).

Further Reading: Ford, T.D., 2000. Geology of the Ecton and other North-east Staffordshire Mines. The Bulletin of the Peak District Mines Historical Society, volume 14, number 4, 1-22.

 

tonga20090319
The earthquake in the Tonga region, March 19, 2009 18:17:40 GMT Magnitude 7.9 recorded at Keele University.

Although a tsunami alert was issued for this earthquake it was later withdrawn. Probably a bit too deep. Probably not associated with the Hunga Tonga Hunga Ha’apai eruption as too far away.

Recorded at Keele as part of the KAP-SEIS project, part of the UK Seismometers for Schools network.

 

farley quarry
Visited Wenlock and Ludlow, Shropshire with our first year geology students at the weekend. Both classic sites of British geology. Dusted of the gigapan robotic mount too.
Here is a gigapan of Silurian patch reefs. [Wordpress won't let me embed gigapans directly into the blog]

Ketophyllum

The above image is I believe Ketophyllum subturbinatum, a rugose coral. [Hey, I'm a seismologist OK, and I was just there as a driver].

Note that Farley Quarry is private land and access permission should be sought from the owner.

 

cccover

Yesterday saw the official launch of the Cannock Chase Geotrail, a 36km guided trail around the geology, geomorphology and geologically related industrial history of this part of South Staffordshire.

Nearly thirty hardy souls turned up for geological ramble around the southern part of the trail covering the Upper Carboniferous Coal Measures, Variscan unconformity and Lower Triassic conglomerates and sandstones. I really enjoy the public understanding of science part of my work and it was a great pleasure to guide such a group of enthusiastic people around the area – I hope they enjoyed the day as much as I did.

cvgcover

Indeed, I’ve had a great couple of summers scouting this trail and last year’s Churnet Valley Geotrail. Rather than just rambling semi-aimlessly (which I enjoy anyway) there is a real purpose to searching down rock exposures (a real challenge in this part of the world), devising a route between them and then compiling the trail leaflet.

The trail leaflets will be available free of charge from local tourist information centres by the end of the month and will be downloadable from the web as pdfs soon. [I'll update this post with the urls when they are uploaded].

I’d like to thank my colleagues for all their help and support in bringing this project together and the Staffordshire Aggregates Levy Grant Fund and Staffordshire County Council for making it all possible.

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