Where is this

[Chris_Robb]

?

 

[Rum_Pirate]

When posting or replying get the photo's address eg

http://i225.photobucket.com/albums/dd80/Rum_Pirate/Skyhawk.jpg

once you have copied this you click on the little yellow envelope thingy (icon) which is 'Insert image ' above [among the icons to change fonts, spacing ]

A little box will open up. Paste the photo's address into it and click 'OK'

OR you can type

Well it works on my computer.

 

[Chris_Robb]

Thanks - I read the manual (RTFM!) and it worked Simple really once you know!

 

[AIDY]

ploumanach.... or however you spell it..... lovely place....

 

[Chris_Robb]

I suppose a bit obvious - but a really wonderful destination!

I would love to know how those massive boulders werer formed

 

[Chris_Robb]

Is it Ticonderoda? - er - or Skyhawk (I cheated)

 

[achwilan]

Not exactly... Costaérès castle and island, in Ploumanach entrance

 

[misterg]

I would love to know how those massive boulders werer formed

I would make a guess (un-educated) that they're glacial erratics - chunks of rock worn away from a mountain somewhere during an ice-age (they're the bits between the global warmings ) and carried a considerable distance (possibly 100s of miles??) before being dropped as the glacier retreated. Hence well rounded, and probably unrelated to the rock they're sitting on.

Just a guess, though.

Andy

 

[Chris_Robb]

I would make a guess (un-educated) that they're glacial erratics - chunks of rock worn away from a mountain somewhere during an ice-age (they're the bits between the global warmings ) and carried a considerable distance (possibly 100s of miles??) before being dropped as the glacier retreated. Hence well rounded, and probably unrelated to the rock they're sitting on.

Just a guess, though.

Andy

Except that the area is gereally granite. I wish I had become a geologist rather than an accountant - bloody sight more interesting!

 

[MarkJohnson12345]

Douanenez

 

[misterg]

Except that the area is gereally granite. I wish I had become a geologist rather than an accountant - bloody sight more interesting!

Agreed & I was wrong:

The coarse-grained granite, estimated to be 5-6 kilometres deep, was intruded 300 million years ago as part of the Variscan Orogeny into much older gneiss which is about 2000 million years old. [...] Erosion has worn away the covering gneiss and rainwater has circulated in minute cracks to alter the granite, dividing it up into the boulders we see today. Erosion by wind, salt and waves has continued the process cutting channels and forming washbasins which sometimes eventually become holes. Vertical channels called draperies have been carved by sea spray running down the rocks. Fissures and cracks cut deep in the rocks form all sorts of crosses, St George, St Andrew and the Maltese Cross. Several apparently separate boulders are piled on top of each other but the aplites running continuously through the pile betray their origin from one solid block of granite. There are also fractures through which fresh water has percolated which have now been filled to form long quartz veins, a few inches wide, running straight out to sea

From the Open University Geology Society (here).

Fascinating...

Andy

 

[Chris_Robb]

Indeed - thanks for looking that up.

 

[Chris_Robb]

Douanenez

No - but this is