Dalradian, in geology, a series of metamorphic rocks, typically developed in the high ground which lies southeast of the Great Glen of Scotland. This was the old Celtic region of Dál Riata (Dalriada), and in 1891 Sir A. Geikie proposed the name Dalradian as a convenient provisional designation for the complicated set of rocks to which it is difficult to assign a definite position in the stratigraphical sequence. In Sir A. Geikie's words, "they consist in large proportion of altered sedimentary strata, now found in the form of mica-schist, graphite-schist, andalusite-schist, phyllite, schistose grit, greywacke and conglomerate, quartzite, limestone and other rocks, together with epidiorites, chlorite-schists, hornblende schists and other allied varieties, which probably mark sills, sava-sheets or beds of tuff, intercalated among the sediments. The total thickness of this assemblage of rocks must be many thousand feet." The Dalradian series includes the "Eastern or Younger schists" of eastern Sutherland, Ross-shire and Inverness-shire, the Moine gneiss, as well as the metamorphosed igneous and sedimentary rocks of the central, eastern and southwestern Scottish Highlands. The series has been traced into the northwestern counties of Ireland. The whole of the Dalradian complex has suffered intense crushing and thrusting. Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history and the processes that shape it. ... Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means change in form (from the Greek prefix meta, after, and the noun morphe, form). The protolith is subjected to heat (greater than 150 degrees Celsius) and extreme... The Great Glen, also known as Glen Albyn or Glen Mor is a series of valleys in Scotland running 100 kilometers from Inverness on the Moray Firth to Fort William at the head of Loch Linnhe. ... Motto: Nemo me impune lacessit (English: No one provokes me with impunity) Scotlands location within Europe Scotlands location within the United Kingdom Languages English, Gaelic, Scots Capital Edinburgh Largest city Glasgow First Minister Jack McConnell Area - Total - % water Ranked 2nd UK 78,782 km² 1. ... A Celtic cross. ... Dalriada or Dál Riata was the kingdom of the Scotti, who spread from the Kingdom of Oriel to Argyll and eventually gave their name to Scotland. ... 1891 (MDCCCXCI) was a common year starting on Thursday (see link for calendar). ... Two types of sedimentary rock: limey shale overlaid by limestone. ... rock with mica Mica sheet mica flakes The mica group of minerals includes several closely related materials having highly perfect basal cleavage. ... Schist The schists form a group of medium-grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. ... Graphite (named by Abraham Gottlob Werner in 1789, from the Greek γραφειν: to draw/write, for its use in pencils) is one of the allotropes of carbon. ... Andalusite-cordierite schist (Large brown crystals are Andalusite Andalusite is an aluminium nesosilicate mineral with the chemical formula Al2SiO5. ... Phyllite Phyllite is a type of metamorphic rock primarily composed of quartz, sericite mica, and chlorite; the rock is intermediate in grade between slate and mica schist. ... Schist The schists form a group of medium-grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. ... Greywacke (German grauwacke, signifying a grey, earthy rock) is a variety of sandstone generally characterized by its hardness, dark color, and poorly-sorted, angular grains of quartz, feldspar, and small rock fragments set in a compact, clay-fine matrix. ... A conglomerate with iron oxide cementing material A conglomerate is a rock consisting of other stones that have been cemented together. ... Quartzite Quartzite is a hard, metamorphic rock which was originally sandstone. ... Limey shale overlaid by limestone. ... Epidiorite is a family of rocks consisting of metamorphosed forms of gabbro or diabase in which the original clinopyroxene (most often augite) has been replaced by the fibrous amphibole uralite. ... This discusses some chlorine compounds. ... Amphibole (Hornblende) Hornblende is a complex inosilicate series of minerals. ... In geology, a sill is a tabular, often horizontal mass of igneous rock that has been intruded laterally between older layers of sedimentary rock, beds of volcanic lava or tuff, or even along the direction of foliation in metamorphic rock. ... Sava also Save (in German: Save; in Hungarian: Száva) is a river in Slovenia, Croatia, Bosnia and Herzegovina and Serbia, a right side tributary of Danube at Belgrade. ... Welded tuff at Golden Gate in Yellowstone National Park Tuff (from the Italian tufo and pronounced tuf) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. ... Sutherland (Cataibh in Gaelic) is a traditional county which is now within the Highland local government area of Scotland. ... Ross-shire (Siorrachd Rois in Gaelic), or simply Ross, is a traditional county of Scotland bordering on Sutherland, Cromartyshire (of which it contains many enclaves), Inverness-shire and on an exclave of Nairnshire. ... Inverness-shire (Siorrachd Inbhir Nis in Gaelic) is one of the traditional counties of Scotland. ... Gneiss Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from preexisting formations that were originally either igneous or sedimentary rocks. ... Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. ... Two types of sedimentary rock: limey shale overlaid by limestone. ... The Scottish Highlands are the mountainous regions of Scotland north and west of the Highland Boundary Fault. ...

This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain. Encyclopædia Britannica, the 11th edition The Encyclopædia Britannica Eleventh Edition (1910–1911) is perhaps the most famous edition of the Encyclopædia Britannica. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...