Top Tweets for #GeolyHoliday
Guess there'll be Shrewsbury #hydrogeologists who know the Shrewsbury Beekeepers Association (https://t.co/2aTVeMbGIN) #apiary at Conduit Head & the site's historical importance for #groundwater supply to the town from the 16th to 20th century #Geology #fieldtrip #GeolyHoliday
A step in time. An obvious angular unconformity between the Precambrian Ercoll Granophyre overlying Cambrian Wrekin Quartzite in Shropshire. Lots of discussion on the depositional environment of the (non-) Quartzite. #Geology #fieldtrip #GeolyHoliday
Morning on the beachβ±οΈπ€ Well, a 470 million year old Ordovician beach on the top of a wet & windy Stiperstones, Shropshire. #Geology #fieldtrip #GeolyHoliday
Old Red Sandstone cliffs on Noss, #Shetlands (spot cruise ship for indication of scale) where 400 million year old river & lake deposits provide nesting site for hundreds of gannets. Some very interested in our boat but the Great Skua is pretty relaxed #geology #GeolyHoliday
Amazing 400 million year old volcanic rocks on #Shetland. The Esha Ness pyroclastic breccias & through which there's a natural blowhole that needs to be approached with caution π΅βπ«#GeolyHoliday
"Whose fault is it?" Pondering normal fault zone in Kimmeridge Clay #GeolyHoliday along Dorset coast #Geology
Spring-fed stream flows down ~10 m high #tufa deposit continuing to form by #groundwater discharge from Devonian sandstone/mudstone perhaps influenced by Bishops Frome Limestone a ~420 million year old calcrete soil at Devonian/Silurian boundary in Teme valley #GeolyHoliday
Sun shining on the East Okement #River, reaching Okehampton after starting its journey on the #granite of Dartmoor. This #GeolyHoliday coming to an end......
Different perspectives on #water & the Carboniferous #geology of Cornwall from coast to moor. Having a #GeolyHoliday
Possible #ostracod #fossil found today in thin mudrock bed within Triassic St Bees Sandstone (braided river deposits) at Dufton. Anyone got a view on identification?
On #GeolyHoliday with Reading #Geological Society https://t.co/dhNJVmCa0r
Welton le Wold, Lincs.: Example of the Pleistocene tills (diamicton), about ~6m thick here & prevalent in this area #Geology #GeolyHoliday, but what about their hydrogeological significance......
Swallow, Lincs.: More Pleistocene!Planar bedded medium grained, moderately sorted sand, overlain by cross-bedded gravels of locally sourced, angular clasts of Chalk. Some discussion of potential aeolian origin of sands & subsequent fluvial reworking π€ #Geology #GeolyHoliday
Uffington, Lincs.: Pleistocene cross-bedded sandy gravels with locally derived & exotic clasts, likely formed in delta in meltwater lake. Evidence for decalcification rather than ice wedgesπ€ #Geology #GeolyHoliday
Just downstream, the impressive Pontcysyllte aqueduct crosses the #River Dee, with the northern end founded on Carboniferous Bowland Shale & the southern end on Silurian mudstones & sandstones #Geology #GeolyHoliday
#Water released from Llyn Brenig #reservoir joins the #River Dee, here seen at Llangollen where it flows across more Silurian mudstones & sandstones #Geology #GeolyHoliday
Standing on Ediacaran schists looking across the Menai Strait to Ordovician volcanics of Eryri #Geology #GeolyHoliday
Yet more Silurian. The Aberystwyth Grits on the beach. Folds & a fault in this sequence of turbidites #GeolyHoliday continues.....
More Silurian rocks, the Caerau Mudstone Formation, with another, more well known river flowing across it. The River #Severn/Afon #Hafren at Llanidloes, which would have powered this old flannel mill #GeolyHoliday
Unplanned lunch stop today on the #River Ennig (Talgarth, Powys). Surprised to discover it flows across the Silurian Raglan Formation; red colour & thought it was Old Red Sandstone π€¨ #Geology & #Water must be a #GeolyHoliday
But mostly the Birdlip Limestone, here at Cleeve Hill, is lovely cross-bedded oolitic limestone, formed as dunes in tropical seas ~175 milion years ago #Geology #GeolyHoliday
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