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Slieve Mish Mountains
Slieve Mish Mountains (Irish: Sliabh Mis, meaning '[possibly] mountains of Mis'), is a predominantly sandstone mountain range at the eastern end of the Dingle Peninsula in County Kerry, Ireland. Stretching 19 kilometres (12 miles), from the first major peak of Barnanageehy outside of Tralee in the east, to Cnoc na Stuaice in near Central Dingle in the west, the range has over 17 material peaks (e.g. height above 100 m), with the core of the mountain range based around the massif of its highest peak, Baurtregaum, and its deep glacial valleys of Derrymore Glen and Curraheen Glen.
The Irish language term "Sliabh" denotes a mountain, however, the precise meaning of "Mis" has not been validated. Irish academic Paul Tempan notes that it could be related to Slemish mountain in County Antrim, where the term "Mis" is from a female name, and thus translates as "the mountains of Mis".
Like many of the mountain ranges in County Kerry, such as the MacGillycuddy Reeks in the Iveragh Peninsula, the Slieve Mish Mountains are composed predominantly of Devonian period Old Red Sandstone, with a band of Ordovician period metasediments on the western slopes of the range.
The rocks of the Slieve Mish Mountains and the Brandon Group in the Dingle Peninsula are Ordovician to Late Carboniferous in age, 485 to 330 millions years ago (Ma).
At the time Ireland was in a hot equatorial setting. During a 60 million year period, Ireland was the site of a major basin, known as the Munster basin, and Cork and Kerry were effectively a large alluvial floodplain.
The rocks in the Dinge Peninsula have an earlier, Silurian, shallow marine facies and a later, Devonian, continental red-bed facies. The transition between the two is unconformable or faulted. The island of Inishnabro just off the peninsula is an exception in the area in that the contact between the two facies is conformable.
The rocks are purple–red due to the oxidation of iron-rich sediments which accumulated in semi-arid climate. In places they are green from chlorination. These colours are still visible today. There are virtually no fossils in Old Red Sandstone. The composition of Old Red Sandstone is variable. Largely fluvial sandstones and conglomerates dominate and there are mudstones, siltstones. Boulders containing quartz pebbles are visible throughout the range.
The Palaeozoic rocks of the Dinge Peninsula have been affected by deformations caused by three orogenies (mountain building events) the Early Caledonian (c. 470 Ma) Acadian (c. 400 Ma) and Variscan (c. 318–297 Ma) orogenies. The Variscan orogeny uplifted and deformed the Devonian and Early Carboniferous rocks, tightened the folds of the Caledonian and Acadian orogenies and reactivated many of the older major faults. Very large NE-SE trending (in the west) and E-W trending (in the east) open upright folds were created in the Dinge Peninsula. The Slieve Mish Anticline in the east provides evidence of this. The erosional products of this were deposited in the Munster Basin.
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Slieve Mish Mountains
Slieve Mish Mountains (Irish: Sliabh Mis, meaning '[possibly] mountains of Mis'), is a predominantly sandstone mountain range at the eastern end of the Dingle Peninsula in County Kerry, Ireland. Stretching 19 kilometres (12 miles), from the first major peak of Barnanageehy outside of Tralee in the east, to Cnoc na Stuaice in near Central Dingle in the west, the range has over 17 material peaks (e.g. height above 100 m), with the core of the mountain range based around the massif of its highest peak, Baurtregaum, and its deep glacial valleys of Derrymore Glen and Curraheen Glen.
The Irish language term "Sliabh" denotes a mountain, however, the precise meaning of "Mis" has not been validated. Irish academic Paul Tempan notes that it could be related to Slemish mountain in County Antrim, where the term "Mis" is from a female name, and thus translates as "the mountains of Mis".
Like many of the mountain ranges in County Kerry, such as the MacGillycuddy Reeks in the Iveragh Peninsula, the Slieve Mish Mountains are composed predominantly of Devonian period Old Red Sandstone, with a band of Ordovician period metasediments on the western slopes of the range.
The rocks of the Slieve Mish Mountains and the Brandon Group in the Dingle Peninsula are Ordovician to Late Carboniferous in age, 485 to 330 millions years ago (Ma).
At the time Ireland was in a hot equatorial setting. During a 60 million year period, Ireland was the site of a major basin, known as the Munster basin, and Cork and Kerry were effectively a large alluvial floodplain.
The rocks in the Dinge Peninsula have an earlier, Silurian, shallow marine facies and a later, Devonian, continental red-bed facies. The transition between the two is unconformable or faulted. The island of Inishnabro just off the peninsula is an exception in the area in that the contact between the two facies is conformable.
The rocks are purple–red due to the oxidation of iron-rich sediments which accumulated in semi-arid climate. In places they are green from chlorination. These colours are still visible today. There are virtually no fossils in Old Red Sandstone. The composition of Old Red Sandstone is variable. Largely fluvial sandstones and conglomerates dominate and there are mudstones, siltstones. Boulders containing quartz pebbles are visible throughout the range.
The Palaeozoic rocks of the Dinge Peninsula have been affected by deformations caused by three orogenies (mountain building events) the Early Caledonian (c. 470 Ma) Acadian (c. 400 Ma) and Variscan (c. 318–297 Ma) orogenies. The Variscan orogeny uplifted and deformed the Devonian and Early Carboniferous rocks, tightened the folds of the Caledonian and Acadian orogenies and reactivated many of the older major faults. Very large NE-SE trending (in the west) and E-W trending (in the east) open upright folds were created in the Dinge Peninsula. The Slieve Mish Anticline in the east provides evidence of this. The erosional products of this were deposited in the Munster Basin.