Pete Bowden
@peterlbowden1.bsky.social
Mylonites, migmatites & metamorphism. With some pseudotachylite thrown in for light relief.
Chlorite, biotite, muscovite
October 7, 2025 at 11:01 AM
Chlorite, biotite, muscovite
I used to just varnish the cut surface on the best looking "half".
September 21, 2025 at 7:36 AM
I used to just varnish the cut surface on the best looking "half".
We haven't established enough windbreaks yet and our fruit trees are still young.
Storm Floris stripped our outdoor beans and spuds😱
Storm Floris stripped our outdoor beans and spuds😱
August 25, 2025 at 5:16 PM
We haven't established enough windbreaks yet and our fruit trees are still young.
Storm Floris stripped our outdoor beans and spuds😱
Storm Floris stripped our outdoor beans and spuds😱
The plum harvest😋 is one of the few things I miss, having moved from Enderby to the Outer Hebrides.
August 25, 2025 at 11:37 AM
The plum harvest😋 is one of the few things I miss, having moved from Enderby to the Outer Hebrides.
In the skiing season they take their arguments to Slovenia, which provides endless entertainment in the queues for the ski tows.
August 18, 2025 at 9:01 AM
In the skiing season they take their arguments to Slovenia, which provides endless entertainment in the queues for the ski tows.
Yup, finishing off my son's Slovenian horse burger was an unexpected highlight of our holiday 🤣
August 12, 2025 at 11:57 AM
Yup, finishing off my son's Slovenian horse burger was an unexpected highlight of our holiday 🤣
The city built upon Slovenian oak?
August 9, 2025 at 5:46 PM
The city built upon Slovenian oak?
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.
Unfortunately I can't find my copy of the "Best of Mountain" LP, but I remember it being a favourite of mine.
August 9, 2025 at 8:35 AM
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.
Unfortunately I can't find my copy of the "Best of Mountain" LP, but I remember it being a favourite of mine.
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.
August 8, 2025 at 12:29 PM
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.
I saw my first rhyolite in Glen Coe😃⚒️
July 27, 2025 at 3:12 PM
I saw my first rhyolite in Glen Coe😃⚒️
One of my favourite Scottish mountains with fantastic Dalradian geology on the northern flanks.
July 15, 2025 at 5:17 PM
One of my favourite Scottish mountains with fantastic Dalradian geology on the northern flanks.
I moved to the Isle of Lewis to get away from the heatwaves😅🤦♂️
July 12, 2025 at 10:44 PM
I moved to the Isle of Lewis to get away from the heatwaves😅🤦♂️
Yes😀
Taken there, in the mid 70s, as an interesting historical diversion whilst on a geological field trip around Ben Lawers and Glen Lyon.
Taken there, in the mid 70s, as an interesting historical diversion whilst on a geological field trip around Ben Lawers and Glen Lyon.
July 12, 2025 at 9:00 AM
Yes😀
Taken there, in the mid 70s, as an interesting historical diversion whilst on a geological field trip around Ben Lawers and Glen Lyon.
Taken there, in the mid 70s, as an interesting historical diversion whilst on a geological field trip around Ben Lawers and Glen Lyon.
I knew if I kept watching your posts for long enough I would get an identification for these beautiful flowers spotted near Mealasta slipway😀
July 11, 2025 at 5:46 PM
I knew if I kept watching your posts for long enough I would get an identification for these beautiful flowers spotted near Mealasta slipway😀
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😉
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😉
July 10, 2025 at 2:29 PM
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😉
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😉
Some would call it a gift😉
June 16, 2025 at 2:05 PM
Some would call it a gift😉
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🤷♂️
June 10, 2025 at 8:59 AM
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🤷♂️
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.
@earlyearthtim.bsky.social for scale, at Maraig, Isle of Harris.
June 6, 2025 at 4:43 PM
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.
@earlyearthtim.bsky.social for scale, at Maraig, Isle of Harris.
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?
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?
May 30, 2025 at 11:52 AM
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?
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?
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?
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?
May 30, 2025 at 9:17 AM
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?
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?
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.
This is also about a metre across.
May 13, 2025 at 4:34 PM
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.
This is also about a metre across.