The Republic of Ireland possesses no active volcanoes. Volcanic activity in the country occurred primarily between 480–430 mya (million years ago), during the
Ordovician
The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya.
T ...
geological age.
List
{, class="wikitable"
! rowspan="2", Name !!colspan ="2", Elevation !! Location !!rowspan="2", Last eruption
, -
! metres!!feet!!
Coordinates
, - align="right"
, align="left" ,
Bennaunmore , , 454, , 1490 , , , , +358 mya
, - align="right"
, align="left" , Bohaun
, , - , , - , , , , -
, - align="right"
, align="left" ,
Cnoc An Duin , , 67 , , 220 , , , , +58 mya
, - align="right"
, align="left" ,
Croghan Hill
Croghan Hill ( or ''Brí Éile'') is a hill with a height of in County Offaly, Ireland. The remains of an extinct volcano, it rises from the Bog of Allen and dominates the surrounding plains. Historically known as ''Brí Éile'', it is menti ...
, , 234, , 768, , , , ±350 mya
, - align="right"
, align="left" ,
Horses Glen , , - , , - , , , , +358 mya
, - align="right"
, align="left" ,
Killeen , , - , , - , , , , +358 mya
, - align="right"
, align="left" ,
Lambay Island
Lambay Island ( ga, Reachrainn), often simply Lambay, is an island in the Irish Sea off the coast of north County Dublin, Ireland. The largest island off the east coast of Ireland, it is offshore from the headland at Portrane, and is the eas ...
, , - , , - , , , , -
, - align="right"
, align="left" , Limerick volcanic basin
, , 220 , , 782 , , , , -
, - align="right"
, align="left" ,
Loch Na Fooey , , 25 , , 82 , , , , ±490 mya
, - align="right"
, align="left" ,
Vinegar Hill
Vinegar is an aqueous solution of acetic acid and trace compounds that may include flavorings. Vinegar typically contains 5–8% acetic acid by volume. Usually, the acetic acid is produced by a double fermentation, converting simple sugars to ...
, , 122 , , 400 , , , , -
, - align="right"
, align="left" , Westmeath-Offaly volcano
, , - , , - , , {{coord, 53.416, -7.296, dim:100000_region:IE, format=dms, display=inline, , ±330 mya
, - align="right"
References
Republic of Ireland
Ireland ( ga, Éire ), also known as the Republic of Ireland (), is a country in north-western Europe consisting of 26 of the 32 Counties of Ireland, counties of the island of Ireland. The capital and largest city is Dublin, on the eastern ...