Showing posts with label Gwithian Beach. Show all posts
Showing posts with label Gwithian Beach. Show all posts

Monday, 18 June 2018

Godrevy (April 2018)

A car issue curtailed some of the intended photography whilst in Cornwall. It is sods law that makes rare mechanical breakdowns happen when you least expect them and when you are not at home!

Despite this we did manage to get to Godrevy on Cornwall’s north coast for a day out. It was quite breezy but warm enough to walk comfortably and to sit and enjoy the views across St Ives Bay. This photograph of Godrevy Lighthouse tries captures theses conditions with the wind whipping back the top of the waves. I also processed a black and white version of the same image which provides additional emphasises the white water and the lighthouse:



Walking along the beach at low tide I took some detailed shots of the cliff face. What interested me was the seemingly abrupt transition from slates to mineral veined mudstone which shows on iGeology as a boundary between the Mylor Slate Formation and Porthtowan Formation.

As I understand it, slate is a metamorphic rock formed from mustone and shales sediments that been subjected to heat and pressure. There is certainly evidence of intense folding in the cliffs at Gwithian Towans which suggests that the Mylor Slate Formation sits above the mudstone layers of the Porthtowan Formation, although I find it hard to visualise this process when simply looking at the cliffs.













Another feature that caught my eye was sand patterns at low tide. I partcularly like the dark streaks that are formed by the retreating sea water:






Then there are patterns that can be viewed from the top of the cliff:




Finally, a couple of shots of the marram grass, an adder spotted near to the car park and the seals in Mutton Cove:




 

Wednesday, 17 August 2016

Beach Walk - Photographic Week 29 (2016)

Whilst my son enjoyed a surfing lesson, I had a couple of hours to walk along the beach from Gwithian towards Hayle. 

Summer photography is often characterised by deep shadows and bright highlights but if the sun is high and diffused, the tones can cluster together. Increasing the exposure pushes this clustering to the right of the histogram producing images that are dominated by light tones. The results can been seen as either lacking contrast or, preferably, having a painterly finish:





A black and white conversion is often the first port of call for wispy clouds in blue skies:



At several places on the beach there is water run off from the cliffs leaving mottled and streaky ash coloured patterns in the sand:










In other places branching patterns are created:





In the dunes above the beach I spotted patches of Restharrow (Ononis reperis):



The cliff face shows evidence of intense geological folding:




This area is characterised by Devonian mudstones and sandstones of the Porthtowan formation and the slates and siltstones of the Mylor State formation (ref: iGeology app). These are some of the patterns and colours close up:











Having finished on the beach we stopped off at Hell's Mouth: a cliff top view which demonstrates how potentially unstable the rock formations are in this area:




This is an amazing YouTube clip of a rock fall at Hell's Mouth recorded four years ago.