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The oldest rock of Ireland has 1,700 million
years of antiquity and was found in Inishtrahull, a small barren
island of the coasts of the county of Donegal. In other parts of
Donegal, the geologists have found rocks that began to form like
glacial deposits during the age of ice, which verifies the fact that
Ireland was covered completely by a mass of ice during the period at
issue. At the end of the Precámbrico, he does near 600 million
years, the mass of earth that later would have evolved to the island
of Ireland, would have been divided in two, being a part in the west
of the Iapetus ocean and the other to the east, both more or less to
the latitude in which today is South Africa. Almost with all
certainty, they were underneath the level of the sea, as they
demonstrate many found marine fossils in Bray Head, in the county of
Wicklow. During the 50 million following years, these two masses of
earth entered collision, soon to be united makes approximately 440
million years. This is demonstrated by the fossil existence numerous
of coastal forms of life of both masses, found near Clogher Head, in
the county of Louth. The mountains of the northwest of Ireland are
fruit of this collision, as well as the formation granite-like of
Donegal and Wicklow |
Irish Rivers: The main river of Ireland is the Shannon River,
of 386 km (240 miles), that is longest as much of Ireland as of Great Britain
and separates the muddy central region of Ireland of the west of the country.
Along river the three form Lagos, the Lough Allen, the Lough Ree and the Lough
Derg. The Lough Derg is greatest of the three. The Shannon River ends at the
Atlantic Ocean near the city of Limerick in the Shannon estuary. Among others
important rivers are the Liffey River, the Lee River, the Blackwater River, the
Nore River, the Suir River, the Barrow River and the Boyne River. The greatest
lake of Ireland is the Lough Neagh, in the Ulster. The legend tells that a
giant, Fionn mac Cumhail, infuriated while it fought with another one of
Scotland, took a piece of earth it threw and it. This one fell in the Irish Sea
and created the Isle of Man, whereas the Earth hollow filled of water and formed
the Lough Neagh. Another Lagos important is the Lough Erne and the Lough Corrib