NM4434 : Fossil mud cracks in Triassic cornstone, Gribun

taken 3 years ago, near to Balnahard, Argyll And Bute, Great Britain

Fossil mud cracks in Triassic cornstone, Gribun
Fossil mud cracks in Triassic cornstone, Gribun
The foreshore at Gribun exposes sandstones, cornstones and conglomerates of Triassic age with some quite good outcrops between the seaweed-covered zone and the grassy meadows above a line of (very) low cliffs. As the bedding is almost level, single beds like this cornstone have been planed off by the sea. The rock was deposited in tropical lagoon conditions, which periodically dried out, forming polygonal cracked mud surfaces which were then filled in by the next inundation. The infilling was with a darker sediment which formed a slightly harder rock, and these filled cracks now resist erosion a little better than the main mass of rock and stand proud.

Beyond the foreshore lies Loch-na-Keal and the island of Inch Kenneth.
Creative Commons Licence [Some Rights Reserved]   © Copyright Andy Waddington and licensed for reuse under this Creative Commons Licence.
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
+
+
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
TIP: Click the map for Large scale mapping
Change to interactive Map >
Grid Square
NM4434, 7 images   (more nearby )
Photographer
  (find more nearby)
Date Taken
Thursday, 29 May, 2014   (more nearby)
Submitted
Tuesday, 3 June, 2014
Geographical Context
Coastal  Geological interest  Estuary, Marine  Rocks, Scree, Cliffs 
Subject Location
OSGB36: geotagged! NM 4491 3488 [10m precision]
WGS84: 56:26.2149N 6:8.3856W
Camera Location
OSGB36: geotagged! NM 44929 34879
View Direction
West-northwest (about 292 degrees)
Looking for a postcode? Try this pageExternal link
Clickable map
+

Other Tags
Fossil Landscape  Mudcracks  Triassic  Cornstone  Foreshore 

Click a tag, to view other nearby images.

Image classification(about): Geograph (Fourth Visitor for NM4434)
This page has been viewed about 119 times.
View this location: KML (Google Earth) · Google MapsExternal link · Bing MapsExternal link · OS Map Checksheet · Geograph Map · geotagged! More Links for this image
NW N NE
W Go E
SW S SE
[Mark
You are not logged in login | register