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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 .. 20 Next page >>
Summit Comment
Aughinish: Clare Island
sandman 4 days ago.
This island is located in County Clare but can only be accessed via County Galway. Originally connected to Clare but the connection was lost in 1755 as a result of an earthquake The British built ...

  
Summit Comment
Lackabane: NE Spur
simon3 2 days ago.
The NE spur off Lackabane is something of a knife edge, descending steeply and with even steeper sides. Watch it on a poor day.

  
Summit Comment
Binn Mhairg: A well worthwhile but neglected scramble
IainT 4 days ago.
The quartzite slabs on the NE flank of Binn Mhairg make a good scramble, one of the best in the Maum Turks. They are reachable by traversing round from the Mam Ean track, pathless but largely gras...

Track
Clogrennan Hill is an easy walk.
simon3 4 days ago.
Clogrennan Hill. walk, Len: 0.9km, Climb: 11m, Area: Clogrennan Hill, South Midlands (Ireland) C...

  
Summit Comment
Scanlan's Island: Clare Island
sandman 4 days ago.
Access to the Island is via the gravel road/track located at M2575111537 .During low tide you have no problem driving on to the island and following the track to the left over concrete to within m...

  
Track
Cullenagh route.
simon3 4 days ago.
Apparently the road up Tinoran is owned or at least used by Coillte walk, Len: 6.6km, Climb: 113m, Area: Cullenagh Mountain, South Midlands (Irelan...

Track
Tinoran Hill.
simon3 3 days ago.
Visiting this hill is pretty straightforward. walk, Len: 2.6km, Climb: 126m, Area: Tinoran Hill, Dublin/Wicklow (Ireland) Tin...

  
Summit Comment
Munnia Top: Coastal Hill
sandman 4 days ago.
Best to access this hill via the farm gate located on the the coastal side at M2929112163 in order to avoid the houses on the opposite side. Just a quick up and down over grazing land to begin and...

  
Track
The Elevated Tour of Glenmalure
GSheehy a week ago.
This was the longer (challenge) option on our second club walk with Na Sl

Forum: General
Local 100
wwwalker 3 weeks ago.
I just wanted to say well done on the change to the local 100 conditions. I was nearly there but the last 2 or 3 would have involved almost going through peoples gardens etc. so I abandoned trying...

  
Forum: Suggestions
Splitting a track into more than one.
simon3 4 days ago.
jgfitz has pointed out that track/1779 had wildly inaccurate figures and probably represented a corrupted file.This .gpx file was originally uploaded by me in Jun 2012, the early days of MV's trac...

  
Forum: General
"Deaded"
BleckCra 5 days ago.
Never would have thought it but it turns out mountains can can be named after insects. Despite all my decrying this site for its translation of Meelmore as Hill of the Ants, I find right on the do...


RECENT CONTRIBUTIONS 1 2 3 .. 20 Next page >>