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A very popular choice on the Student Association jukebox (remember those?), back in the early 70s at Dundee.
Unfortunately I can't find my copy of the "Best of Mountain" LP, but I remember it being a favourite of mine.

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Pete Bowden @peterlbowden1.bsky.social · Aug 8

The Lewisian, (part of the Pre-Cambrian), is named after the Isle of Lewis in the Outer Hebrides and the Caledonian mountain chain is named after the Latin name for Scottish Highlands.

Pete Bowden @peterlbowden1.bsky.social · Aug 7

🤣

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Pete Bowden @peterlbowden1.bsky.social · Jul 27

I saw my first rhyolite in Glen Coe😃⚒️

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Reposted by Pete Bowden

Rhyolite_Prof @edithrojas.bsky.social · Jul 26

Geology people who do we you know in Edinburgh so that we can connect and go to Siccar point together. Do your thing social media!!!

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Pete Bowden @peterlbowden1.bsky.social · Jul 15

One of my favourite Scottish mountains with fantastic Dalradian geology on the northern flanks.

The snow covered triangular peak of Schiehallion on a bright spring day.

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Pete Bowden @peterlbowden1.bsky.social · Jul 12

I moved to the Isle of Lewis to get away from the heatwaves😅🤦‍♂️

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Pete Bowden @peterlbowden1.bsky.social · Jul 12

Yes😀

Taken there, in the mid 70s, as an interesting historical diversion whilst on a geological field trip around Ben Lawers and Glen Lyon.

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Pete Bowden @peterlbowden1.bsky.social · Jul 11

I knew if I kept watching your posts for long enough I would get an identification for these beautiful flowers spotted near Mealasta slipway😀

Bright yellow flowers amongst the grass on the headland north of Mealasta slipway, west coast of the Isle of Lewis.
Look like the Bog Asphodel, (Blioch in Gaelic), in a recent post by Frank Rennie.

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Pete Bowden @peterlbowden1.bsky.social · Jul 10

Lewisian meta basic/ultrabasics showing similar shear zone fabrics can be seen on the west coast of the Isle of Lewis.
The contrasting colours of the feldspars and mafic minerals really emphasise the strain variations🤓.
I haven't seen any of the thin discreet shear zones yet, but I live in hope😉

A grey meta gabbro shows speckled appearance towards top of the photo. The minerals become elongate and to define a curved tectonic fabric which becomes smeared out in a shear zone seen in the lower part of the photo.
Seen on the west coast of the Isle of Lewis.

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Pete Bowden @peterlbowden1.bsky.social · Jun 16

Some would call it a gift😉

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Pete Bowden @peterlbowden1.bsky.social · Jun 10

I always think of sheeted dykes with single chilled margins as the key feature of oceanic crust, (ophiolite), but that view may be out of date now🤷‍♂️

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Pete Bowden @peterlbowden1.bsky.social · Jun 6

In a land of "Undifferentiated grey gneiss" the occasional dun coloured outcrop is much appreciated😉⚒️.
@earlyearthtim.bsky.social for scale, at Maraig, Isle of Harris.

Brown and dun coloured outcrop of meta-ultrabasic, Maraig, Isle of Harris.

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Pete Bowden @peterlbowden1.bsky.social · May 30

When viewed from this, (opposite), side the large #FridayFold resembles a rock formation seen in the #MonsterHunterWilds computer game. ⚒️🧪

Large open fold in grey and brown Lewisian gneiss contorts the foliation. The outcrop resembles a rock formation seen in the "Monster Hunter Wilds" computer game

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Pete Bowden @peterlbowden1.bsky.social · May 30

Thin sections - absolutely the way to go🤓. I miss my microscope and the increased certainty that it brought to petrographic studies.
In the pale grey "vein" and just to right of centre there is a porphyroclast with a blue tinge and sort of granular texture - do you think this might be protolith?

Pete Bowden @peterlbowden1.bsky.social · May 30

A worthy GigaPan candidate? So many interesting features that are not quite in focus.
Might the sub horizontal band of pale grey v. fine grained material be pseudotachylite (possibly reworked)? or is it ultramylonite/cataclasite?
Have you seen similar rocks in situ nearby or is this sample exotic?

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Pete Bowden @peterlbowden1.bsky.social · May 13

Not really my field, but can't resist taking photos of sedimentary processes, especially where there are sufficient heavy minerals to emphasise the features.
This is also about a metre across.

Small tributary stream building a delta into larger brown, (peat stained) stream. The sedimentary features observed in the yellow sand are emphasised by black heavy mineral concentrations.

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