| Inishowen is an old
place. With the exception of the area around Londonderry,
and the north-western border of Lough Foyle, it is made
up of a very ancient series of rocks, known as the ‘Dalradian
Series’.
These rocks stretch across the peninsula
in broad bands, each one extending from the south-west to
the north-east, sometimes as much as two to three miles
in width.
Consisting essentially of quartzites,
schists and limestones, they represent a series of marine
sediments - muds, sands and banks of shells - which have
been compressed, and much altered in appearance, through
the long and sustained action of immense heat and pressure.
Added to this mix of ancient rocks
are newer rocks poured in the form of hot liquid which later
cooled. Examples of this are found in the strangely shaped
granites along the coast south of Dunaff Head. The more
weather resistant tougher quartzites have been responsible
for shaping Slieve Snaght, Slieve Main and Crocknamaddy
- the peaks of the highest mountains on the peninsula.
If you look at all of these rocks
up close, or mountains from afar, you literally step back
in time. You are witness to the effects of time over vast
periods.
Take the first photograph presented
above, 'Inishowen Cove'.
As I stood struggling to find foothold
amongst the many coloured pebbles, in awe of the shapes
and colours, I realised that the continual tidal actions
and subsequent wash of pebbles had weathered out the shape
of the dark green granite.
I watched the tide creep slowly
up into the cove and wondered how long this smoothing action
must have been going on. It struck me as a long time whatever
way you look at it.
Out to the west sits the Atlantic
Ocean and the Fanad peninsula. A view likely unchanged in
thousands of years, certainly at least since the end of
the last Ice Age.
I’m reliably informed that
the curved stones in this particular photograph are hard
dark green varieties of well exposed granite known as ‘epidiorites’.
Their shapes are an otherworldly
addition to the dramatic coastline of western Inishowen.
These close-up ‘relics of memory’
along with wider landscapes such as this one in Urris hold
a fascination for me.
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