Hutton's Rock
This odd looking lump of rock (rather dark as my attempts with flash
were awful) demonstrates a vein of iron ore running through the
teschenite rock of Salisbury Crags. The vein formed when the molten
ore permeated through fissures in the rock.
In James Hutton's time (he was born in 1726), the Earth was not
considered to be very old at all (a mere 75 000 years) and popular
theories at the time had it that rock formations had occured either
through fire (Plutonism) or by water (Neptunism)but either way, it
had all happened rather quickly.
Hutton's many careful observations, not just of Holyrood park but in
many other places, suggested that the formations had taken much
much longer and that not only this but some rock formations had
occured so long ago that others had had the time to form on top and
for the land to tilt and break underneath them. In fact the earth must
be many millions of years old.
This enormous time leap must have come as quite a shock to his
contemporaries. Needless to say it caused great argument at the time
but nowadays Hutton is considered to be the father of modern Geology.
(The Earth's birthday has now been put back to about 4.5 billion years.)
This piece of rock stands alone as Hutton is reputed to have asked for
it to be preserved from quarrying which is why it still stands to this
day as a little place of pilgrimage for rock fanciers.
Hutton is buried in Edinburgh but his plaque is in a normally locked
part of Greyfriars cemetary and difficult to get to. I may manage to
blip it some day!
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- Fujifilm FinePix Z33WP
- 1/25
- f/3.7
- 6mm
- 800
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