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Possibly a male He.. by milokane   (Show all posts)
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 Devil’s Coach .. by dhmiriam   (Show all posts)


RECENT CONTRIBUTIONS 1 2 3 .. 21 Next page >>
Summit Comment
An Bhinn Bhuí: Benwee Loop walk towards Portacloy.
ucampbell 17 hours ago.
The Loop walks here are well signposted, it's a great idea to go out onto each headland.

  
Summit Comment
Doonvinalla N Top: Coastal Hill
sandman 21 hours ago.
On 26/4/2014 i spent a very enjoyable afternoon walking this area visiting the army observation hut and the stone constructed EIRE marking as part of an addition to the Benwee Head Loop walk but i...

  
Summit Comment
Doonvinalla N Top: Flat topped but hard to get to.
simon3 21 hours ago.
View from the west.

Track
Circuit of Dirkbeg Lough - easier ascent
simon3 2 days ago.
The purpose of this walk is to reach the Maumtrasna plateau and Maumtrasna NE top (MNET). The lattter is quite possib... walk, Len: 11.6km, Climb: 564m, Area: Maumtrasna North-East Top, Partry/Joyce

  
Track
Near Galtybeg, Galty Mountains (Ireland)
caiomhin 2 days ago.
walk, Len: 11.3km, Climb: 663m, Area: Galtybeg, Galty Mountains (Ireland) Galty...

  
Track
Benwee Coastal Walk
simon3 2 days ago.
The walk starts at a small carpark and Wild Atlantic Way sign just west of Benwee. In fact some of the local rock has ... walk, Len: 8.1km, Climb: 245m, Area: An Bhinn Bhu?, North Mayo (Ireland) An B

Summit Comment
Benwee NE Head: Jagged summit
simon3 21 hours ago.
View from the east.

  
Forum: General
Riddle of the Spinc
BleckCra 2 days ago.
I was at Glendalough yesterday and on the Spinc for the first time. I cannot imagine there haven't already been a thousand hours debate on the boardwalk and and that there won't be a thousand hour...

  
Summit Comment
Benwee NE Head: Jagged summit
simon3 21 hours ago.
Picture from the west.

Summit Summary
Kid Island: Steepwalled island.
Collaborative entry Last edit by: simon3 23 hours ago.
Kid Island is very visible from Benwee Head.

  
Track
Lenadoon Coastal Walk
simon3 3 days ago.
walk, Len: 2.5km, Climb: 8m, Area: Mayo Coastal Hill (Ireland)

  
Summit Comment
Buckaun East: Cliffy north edge.
simon3 23 hours ago.
This is a picture of Buckaun East taken from the valley below.. Obviously the safest way to go up and down this is to the left or south of the ridge.


RECENT CONTRIBUTIONS 1 2 3 .. 21 Next page >>