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The Old Red Sandstone was long thought to have been deposited mostly in freshwater, but more recent studies have discovered marine fossils (such as brachiopods) [5] in some locations, its vertebrate fauna also occurs in typically marine environments, [6] and an isotopic study also found significant marine influence in mineralised tissues of its ...
The Munster Basin is a late Middle to Upper Devonian age extensional (rift) sedimentary basin in the south-west of Ireland. [2] [3] The basin fill comprises fluvial Old Red Sandstone (ORS) magnafacies [4] [5] [6] with minor silicic volcanic [7] and mafic sub-volcanic [8] centres.
The Dwarfie Stane is a megalithic chambered tomb carved out of a titanic block of Devonian Old Red Sandstone located in a steep-sided glaciated valley between the settlements of Quoys and Rackwick on Hoy, an island in Orkney, Scotland. [1] The stone is a glacial erratic located in desolate peatland. [2] The site is managed by Historic ...
MacGillycuddy's Reeks are composed of sandstone particles of various sizes, which are collectively known as the Old Red Sandstone.The rocks date from the Upper Devonian period (310–450 million years ago) when Ireland was in a hot equatorial setting. [2]
This thick sequence of sandstones, siltstones, mudstones and conglomerates is divided into three units; the Lower Old Red Sandstone is represented by rocks assigned to the Arbuthnott-Garvock and Strathmore groups. They are in turn made up of a variety of individual formations characterized by sandstones and to a lesser extent conglomerates and ...
Sandstone: Location; Region: Wales: Country ... "Senni Beds of the Devonian Old Red Sandstone, Dyfed, Wales: anatomy of a semi-arid floodplain". Sedimentary Geology.
A new study challenges the origins of Stonehenge.. In a new study published on Wednesday, Aug. 14, a group of researchers claim that the giant "Altar Stone" of the famed structure in Wiltshire ...
Moll's Gap is on the Ring of Kerry route, [2] and offers views of the MacGillycuddy's Reeks mountains, and is a popular tourist location. [3] The rocks at Moll's gap are formed of Old Red Sandstone , which are small quartz grains laid down over 350 million years ago; unlike most of the Old Red Sandstone around Killarney which is stained red by ...