The rocks of Bay of Skaill represent sediments of the Old Red Sandstone which were deposited in the Devonian geological time period, about 380 million years ago.
“Our new results suggest that for most of Earth’s history, convection in the mantle was stratified into two distinct layers, namely upper and lower mantle regions that were isolated from each other.” Zhengbin Deng, former assistant professor at the University of Copenhagen
Researchers from Norway and France have found a way of coordinating and recalibrating two conflicting systems of dating the surface of the Moon.
The layers of red and honey-coloured sandstone that make up the cliffs are between 380 and 370 million years old and date from the Devonian Period, when Scotland lay south of the equator and was part of a huge desert continent. – Scottish Geology Trust
“By being able to ‘perform’ what would otherwise be viewed on a graph, we’re able to bring the power of nature to life and help more people experience the natural wonders of Yellowstone. ” Dr Vicinanza
Known as the Rhynie Chert, the exquisitely detailed plants, spiders, fungi and other life were preserved by hot springs about 410 million years ago.
Tickets will go on sale in a week’s time, on Thursday 21 July at 6 pm, for The Orkney International Science Festival.
A central feature of the Earth’s climate system is the way that carbon bound in two gases – carbon dioxide (CO2) and methane (CH4) – controls the amount of incoming solar energy that is retained by the atmosphere.
“Approaching the Broch of Borwick, looking along the line of cliffs”
Sedimentary evidence for global climates 320 Ma ago. As well as the large tracts of glaciogenic sediments, smaller occurrences and examples of polished rock surfaces over which ice had passed show the probable full extent (blue line) of ice sheets across the southern, Gondwana sector of Pangaea (Credit: after Fig 7.3, S104, Earth and Space, ©Open University 2007)