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A squillion years .. by Bleck Cra   (Show all posts)
Thanks mccrtchly f.. by slemish   (Show all posts)
mcrtchly
2011-01-18 10:41:57
Irish Volcanoes
Of course there are no active volcanoes in Ireland - yet (but maybe in 50 million years time when Africa collides with Europe or in 150Ma time when the Atlantic Ocean starts to close). However there are the remains of old volcanoes throughout the geological record in Ireland. The youngest are found in NE Ireland and are related to the opening of the Atlantic Ocean about 60Ma ago. Slieve Gullion is the core of a volcano from this time (see: http://www.louthcoco.ie/en/Publications/General/A_Geological_Field_Guide_to_Cooley,_Gullion,_Mourne_Slieve_Croob_.pdf). Slemish in Antrim is the core of another volcano from this period. During the Carboniferous period (350Ma) occasional small volcanoes disturbed the warm tropical seas. The remnants of these can be seen today as several small hills in the Irish Midlands such as Croghan Hill in Offaly. The Lough Guitane (Mangerton) volcanic complex in Kerry is slightly earlier (about 390Ma) but is related to the same tectonic events (the closing of an ocean to the south of Ireland at this time). Going back further in time Ireland was split in two by a precursor to the Atlantic Ocean known as the Iapetus Ocean (SE Ireland was split many 1000'skm from NW Ireland by the ocean). When the Iapetus closed around 450Ma there were many volcanoes in Ireland. An example (now eroded to sea level) can be seen on the Copper Coast in Waterford (see: http://homepage.eircom.net/~ccgeopark/Geology.htm). There are also numerous ancient volcanic cores in Connemara and Mayo.
...I remember one .. by Conor74   (Show all posts)
hbowman, just ask .. by Bleck Cra   (Show all posts)
....well a mystery.. by bryanmccabe   (Show all posts)
Just out of curios.. by hbowman1   (Show all posts)
The Devil’s Coach .. by dhmiriam   (Show all posts)
New Camera; stupid.. by Bleck Cra   (Show all posts)
Just a note to inf.. by ahendroff   (Show all posts)


RECENT CONTRIBUTIONS 1 2 3 .. 18 Next page >>
Forum: General
Carol Morgan wins the women's Spine Race agai
IainT 10 hours ago.
Carol Morgan from Dublin has come in as first woman in the Spine Race for the 2nd time after crossing the Cheviots in some of the toughest conditions in the race for years. She is over a day ahead...

  
Forum: General
When hill-walking meets (pre)history
David-Guenot a day ago.
Amazing discovery by a hill-walker. It seems the Irish hills still have many a secret to hide... http://www.thejournal.ie/ancient-human-remains-mayo-3805783-Jan2018/?utm_source=shortlinkAnd an art...

  
Summit Comment
Banagher Hill: Better road surface - easier access now
Pepe 3 days ago.
Followed the Bluestack Way sign mentioned by Aidy. The road is well surfaced now, though narrow. Drove a couple of kilometres NW (ignoring lower-down parking areas) to a small plantation on the le...

Summit Comment
Knockastia: Hunting and shooting forbidden
ceadeile 3 days ago.
The path described by FergalH is now, January 2018, very overgrown. There are many thorn bushes in particular which make it a somewhat dangerous for your eyes. A simpler approach is to park at the...

  
Bibliography
Exploring Ireland's Wild Atlantic Way by David Flanagan & Richard Creagh
aidand 3 days ago.
This book is definitely a keeper, a book I’ll hang on to knowing I’ll return to it again and again.I don’t know who the genius is who came up with the concept of the Wild Atlantic Way (WAW) but th...

  
Forum: General
"Werewolf? There wolf."
BleckCra 2 days ago.
Lycanthropus lycanthropus. Inverted pawprint. Slieve Commedagh. The Snow.None of which should be fecked with.

Summit Comment
The Ravens Rock: Crispy Morning Rock Hopping
Pepe 3 days ago.
Climbed this via the ascent up the Fox's Rock from the Long Woman's Grave. Took the direct route up (steep and slippy!) on a crunchy January morning. The light and the views were magnificent. If y...

  
Track
Nire Valley 22km loop walk through the Gap and to Crotty's and up to Fauscoum
Ulsterpooka a week ago.
walk, Len: 20.4km, Climb: 1140m, Area: Fauscoum, Comeragh Mountains (Ireland) F...

  
Summit Comment
Slieve Bawn: Now home to a Windfarm and Recreation Area
melohara 4 days ago.
Slieve Bawn is now home to the Sliabh Bawn Windfarm and Recreation Area, a joint development between Coillte and Bord na Móna. Car parks have been provided and a number of walking trails developed...

Forum: General
Re Adding markers to descriptions
simon3 2 days ago.
If you put in a grid reference into a place comment eg comment for a mountain, then the system notes this and gives it a letter like "A" which appears on the map However it only appears on the map...

  
Track
Drumnalifferney North East Top
Aidy a week ago.
I did this route in winter conditions, and the views to be had around the Derryveagh Mountains, over Dunlewey, and ac... walk, Len: 8.7km, Climb: 577m, Area: Drumnalifferny North-East Top, Donegal NW

  
Summit Comment
Carrauntoohil: Many routes to the top...
donalhunt 5 days ago.
Posting purely to share the photo which was taken from Cruach Mhór on 21 June 2014.Another source with additional routes indicated (e.g. via The Bone and Cruach Mhór) is available from http://www....


RECENT CONTRIBUTIONS 1 2 3 .. 18 Next page >>