The Irish Geological Association Posts

Abstract: Volcanic ash (tephra) produced by explosive eruptions may be transported by wind and deposited thousands of kilometers from its source to form marker layers in time. These tephra layers may be used to link and to date geological, palaeoecological, palaeoclimatic, and archaeological sequences and events, including whether the transition from Neanderthals to anatomically modern human populations in Europe was…

Read More LECTURE on December 12th: ““Tephra! Linking Neanderthals to Magma Chambers” by Dr. Emma Tomlinson (TCD)

Abstract: Tsunamis can be caused by movements of large portions of submerged slopes, and geologists are now realising that underwater landslides are more common than once thought. Until now, we have been studying slope failures from research ships at the sea surface, several hundreds of metres above the landslide scarps themselves. Wouldn’t it be better if we were able to walk…

Read More Lecture on November 7th: “Walking” Among Underwater Landslide Scars by Dr. Aggeliki ‘Aggie’ Georgiopoulou (UCD)

Abstract: Sediment erosion, transport and deposition by rivers and turbidity currents are key processes responsible for shaping large areas of Earth’s natural landscape and seascape. Similar resurfacing of other planetary surfaces by liquids associated with a volatile cycle is also inferred for other planetary bodies in the solar system, including Mars and Titan. This talk will examine suspended-load-dominated flows in…

Read More Lecture on October 24th 2018: Dr. Lawrence Amy (UCD) on “Sediment Transport Processes on Earth, Mars and Titan”