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Posted: 17 May 2012

Taken: 17 Sep 2011

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1/100 • f/8.0 • 17.0 mm • ISO 100 •

Canon EOS 350D DIGITAL

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Geology Geology

Keywords

beach •
mudstone •
sedimentary structures •
siltstone •
upper Carboniferous •
Hercynian •
Variscan •
Bude Formation •
Crooklets •
turbidite •
geo:lat=50.83411075657326 •
Bude •
Cornwall •
England •
rocks •
geotagged •
coast •
sandstone •
cliff •
geology •
shale •
way up •
fold •
anticline •
geo:lon=-4.554290543308298 •

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Anticline, Crooklets, near Bude, Cornwall

Anticline, Crooklets, near Bude, Cornwall
An anticline in the Bude Formation (upper Carboniferous) at Crooklets, near Bude, Cornwall. The Bude Formation here consists of alternating thin beds of turbidite sandstones (pale grey/brown) and fine-grained shaly siltstones/mudstones (darker grey).

Minor crumpling on the south (right-hand) limb of the fold has resulted in near vertical or slightly overturned bedding. The sandstones display sedimentary structures which can be used to determine the 'way up' of the bedding. Here, the sedimentary structures are mostly rippled upper surfaces and small-scale slump or load structures on the basal surfaces. The latter can be seen in detail in the next two photos:

www.ipernity.com/doc/earthwatcher/39024212

www.ipernity.com/doc/earthwatcher/39024210

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