Geology of Galway-Offaly - Sheet 15

      1:100,000 series index

Area covered by the Map and Booklet



Booklet Contents

  • INTRODUCTION
    • The evolution of the Galway-Offaly landscape
    • "The present is the key to the past"
    • "Missing Rocks"
        • READING THE GEOLOGICAL MAP OF GALWAY-OFFALY
          • The Rock Units
          • How rock units come to lie side by side
          • Boundries between rock units
          • What the map does and does not show
          • Viewing the rocks
                  • AN INTORDUCTION TO THE GEOLOGY AND ROCK TYPES OF GALWAY OFFALY
                    • Silurian - The closure of the Iapetus Ocean
                    • Devonian - The Caledonian Orogeny and The Old Red Sandstone
                    • Lower Carboniferous Limestones
                    • Upper Carboniferous - Silesian
                    • Carboniferous (Dinantian) volcanic rocks
                    • Post Carboniferous and the Variscan Orogeny
                    • Quaternary Period
                            • THE BEDROCK GEOLOGY OF GALWAY-OFFLY
                              • Lower Palaeozoic Rocks - The Silurian
                              • Devonian - The Old Red Sandstone
                              • The Lower Carboniferous - Dinantian
                              • The Upper Carboniferous - Silesian
                              • Carboniferous (Dinantian) volcanic rocks
                              • Sedimentology and Palaeogrography of Devonian and Carboniferous rocks
                              • Basin development in the Carboniferous
                              • Structural geology of the Devonian and Carboniferous
                                      • MINERAL RESOURCES
                                        • Metallic Mineral Deposits
                                        • Industrial Deposits
                                                • HYDROGEOLOGY
                                                  • Introduction
                                                  • Groundwater Resources
                                                          • REFERENCES AND ADDITIONAL READING LIST



                                                            • Trough cross-bedding in alluvial sandstones of the Cadamstown Formation (Old Red Sandstone) along the upper River Barrow in Glenbarrow, Slieve Bloom.

                                                              Photo by S. Gatley

                                                              Limestone of the Ballysteen Formation being worked for aggregate in Knockacoller Quarry, Castletown.



                                                              Photo by A.G. Sleeman