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Hi there. Thanks f.. by paulocon   (Show all posts)
Hi Paulocon I see .. by Derry259   (Show all posts)
Mountain Views is .. by ahendroff   (Show all posts)
mcrtchly
2010-05-07 13:45:31
"Caninophyllum" from mcrtchly Expand pics
Caninophyllum (Expand pics)
Coral fossils
Following on from Kerrnowclimber's description of the fossils that we found on Ben Bulben I have attached a photograph of one of the common species (Caninophyllum) that can be found in the Dartry Limestone (which forms the cap to the Ben Bulben plateau). The Dartry Limestone was deposited in shallow equatorial seas above a shelf of rock. Coral reefs fringed the shelf much like the present-day barrier reefs and coral atols. There were a wide variety of corals living on the reef. Some coral species evolved little over millions of years whilst other species were short lived. Geologists can identify the different species from their fossils and this helps to date the rocks and to correlate rocks across different exposures (eg between Ben Bulben and the Burren). The idenitification of the species requires careful measurement and observation of features in the coral fossil such a sub-divisions, central core and septa (which are the radial 'spokes' of the creature).
Simon has suggeste.. by kernowclimber   (Show all posts)
Dessie, here's a c.. by paulocon   (Show all posts)
I found a small bl.. by kili or bust   (Show all posts)
...jackill got me .. by wicklore   (Show all posts)
Long ago and far a.. by jackill   (Show all posts)
For those of us no.. by Bleck Cra   (Show all posts)


RECENT CONTRIBUTIONS 1 2 3 .. 25 Next page >>
Track
Sheep's Head Ramble...
Onzy an hour ago.
walk, Len: 8.4km, Climb: 237m, Area: Cork Islands (Ireland)

  
Summit Comment
Croghan Hill: In the Steps of Old Croghan Man
ladyhawke1003 4 hours ago.
Croghan Hill is one of the main reasons I came to Ireland. I am researching Old Croghan Man for a book. Even with Mel's precise directions we had a little trouble finding the community centre. It ...

  
Track
Near Knockshanahullion, Knockmealdown Mountains (Ireland)
jackill 9 hours ago.
walk, Len: 13.6km, Climb: 518m, Area: Knockshanahullion, Knockmealdown Mountain...

Track
Fermoy Scouts night hike
jackill 9 hours ago.
walk, Len: 19.5km, Climb: 928m, Area: Shannon (Ireland)

  
Track
The Sturrall
Peter Walker a day ago.
walk, Len: 9.1km, Climb: 268m, Area: Donegal Islands (Ireland)

  
Summit Comment
Great Saltee Island: Bird's Glare
simon3 a day ago.
. .

Summit Comment
Curra Hill: Cloudy Climb
andreos97 5 days ago.
Fantastic walk, personally feel it's best starting your approach from Glenbeigh village and heading up through the forest as it's quite well signposted. Once leaving the cover of the trees, we wer...

  
Track
Croaghavehy
Peter Walker a day ago.
As prescribed by Mr Sandman. Parked at the Glengesh viewpoint (where I got to admire some quite astonishing car positi... walk, Len: 3.0km, Climb: 114m, Area: Croaghavehy, Donegal SW (Ireland) Croagh

  
Summit Comment
Cnoc Lios Uachtair: Connemara in the round
fieldoptic 6 days ago.
An easy to access and navigate hill, well worth it for its central position and views in every direction. Park as previously suggested at L8530 4820 and head north east before swinging north. The ...

Track
Awkward access to a small but rugged summit
madfrankie 2 days ago.
Despite it's modest 405m height, Croaghacullin is not the easiest hill to climb, or indeed to find. There may be other... walk, Len: 3.9km, Climb: 255m, Area: Croaghacullin, Donegal SW (Ireland) Croa

  
Summit Comment
Cnoc Mordáin: Long Connemara Summer Evening
fieldoptic 6 days ago.
Though the road near L88003920 appears unfenced you will encounter a fence very soon after leaving the road. This fence extends along this back road, Bothar na Scrathóg and keeps cattle in typical...

  
Track
Table Mountain Loop including the Air Crash Site from 1957
Tobi 2 days ago.
A beautiful loop walk taking in Sugarloaf, Lobawn, Table Mountain West Top and Table Mountain. From Table Mountain, in... walk, Len: 17.5km, Climb: 672m, Area: Sugarloaf, Dublin/Wicklow (Ireland) Sug


RECENT CONTRIBUTIONS 1 2 3 .. 25 Next page >>