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you forgot the cur.. by maclimber   (Show all posts)
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 Devilís Coach .. by dhmiriam   (Show all posts)
New Camera; stupid.. by Bleck Cra   (Show all posts)


RECENT CONTRIBUTIONS 1 2 3 .. 14 Next page >>
Summit Comment
Camaderry Mountain: Great views from Camaderry
jasonmac a day ago.
Parked at the Glendalough upper lake and paid the 4 euro, glad i did as this hike took me over 4 hours and the carpark was past closing by the time I got back. headed along the left side of lake a...

  
Track
Near Carrignagower, Comeragh Mountains (Ireland)
DenisMc a day ago.
walk, Len: 14.3km, Climb: 730m, Area: Carrignagower, Comeragh Mountains (Irelan...

  
Summit Comment
Croaghskearda: Views
Strikeen a day ago.
Some more views

Summit Comment
Croaghskearda: Views from atop
Strikeen a day ago.
Some spectacular views from this mountain

  
Summit Comment
Slievecoiltia: Will explore next time.
Corkonian 3 days ago.
There is a drive to the top. Busy place. Good views from the top.

  
Track
A Long Walk to Conigar
CaptainVertigo 2 days ago.
walk, Len: 27.1km, Climb: 1095m, Area: Coomataggart, Shehy/Knockboy (Ireland) C...

Summit Comment
Lacken Hill: Great views. Good spot.
Corkonian 3 days ago.
Good spot and a good place to walk. Final part of the climb to the top is a bit of a challenge. Spectacular wide ranging views from the hill top. Also historical monuments on the hill top. Underst...

  
Forum: General
GPS Device Found
GSheehy 2 weeks ago.
GPS Unit found in the Maumturks . Contact 086/8449239 for details.

  
Track
Cycle around Ballinastoe etc.
simon3 2 days ago.
A cycling track. run, Len: 29.5km, Climb: 399m, Area: Robber's Pass Hill, Dublin/Wicklow (Irelan...

Summit Comment
Maumfin: Cattle might be a problem
eamonoc 4 days ago.
On 20/4/2017, at 07.4am drove to L 65405 59318, at area noted as Tievegariff on OS sheet 37. Parked opposite old abandoned cottage, went through gate and onto a well made farm tack uphill to two o...

  
Summit Comment
Cnoc na SleŠ: Sunset At The Murder Hole
Aidy 6 days ago.
In my main summit comment I mentioned the steep northern sides of both Crocknasleigh and Gortnalughuge that I had descended to get to the Murder Hole at Boyeeghter Bay for sunset. This photo shows...

  
Forum: Suggestions
Website is failing periodically
simon3 2 months ago.
For the last few days the website has been crashing or going slow.Bear with us while we attempt to resolve this.


RECENT CONTRIBUTIONS 1 2 3 .. 14 Next page >>