Geological Heritage

Most of Louth is underlain by sandy and shaley rocks deposited in the Silurian period (shown in greenish-grey on the geological map below). These are part of the low-lying, long-eroded Longford-Down massif and explain some of the similarities in soil type and landscape between Louth and adjoining counties to the north (the brighter green rocks are of similar age and character). Some favoured parts of the county are underlain by the Carboniferous limestone (light blue below) that floors much of the midlands.

For a geological map of Louth and surrounding areas click on the link below:
www.cushycms.com/temporary_uploads/92776/Louth_geology_GIS.pdf