To view on black flickr2.netbits.co.uk/large/photo/3791820022
I met up with Matt Harper at the weekend. He was kind enough to give me a guided tour of Selwick Bay and Thornwick Bay and point out where some of the less obvious spots are to set up the camera.
Matt has an encyclopedic knowledge of this coastline, so it was a pleasure to spend a couple of hours in his company getting to know a bit more about this part of Yorkshire.
Selwick Bay is Yorkshire's most easterly point and the cliffs are pricipally made up of chalk formed some 100 million-years-ago, give or take a year or two.
Chalk has been used in the foreground on this photo, and while it doesn't have the interestingly coloured minerals that some other sedimentary rocks contain around this coastline I still find chalk fascinating beacuse of how it was formed.
The formation of sandstone and shale are relatively easy to comprehend - eroded material from rivers deposited layer upon layer on the seabed. But chalk is formed from the accumulation of dead algea shells. It is estimated that it takes 30 years of algea shells to produce 1mm of chalk. The chalk layers can be up to 1000 metres thick! That makes it 30 million years (give or take a year) of continual accumulation to produce what we see today. I find this much harder to conceive because rather than the rock being compacted and eroded volcanic sediment, chalk is essentially the result of organic activity on the grandest scale imaginable.
It looks nice and smooth on photos too :-)
Oh - if you look in the top right hand corner you can just about see Matt setting up a fine array of Lee filters on his 5D.