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The Caledonians (/ ˌ k æ l ɪ ˈ d oʊ n i ən z /; Latin: Caledones or Caledonii; Ancient Greek: Καληδῶνες, Kalēdōnes) or the Caledonian Confederacy were a Brittonic-speaking tribal confederacy in what is now Scotland during the Iron Age and Roman eras.
Two parts of Avalonia have been distinguished, a western and an eastern one. The term Western Avalonia refers to the westernmost part of the microcontinent which amalgamated the east coast of the main part of the Laurentia tectonic plate (what is now North America) to the west in the area of the northern Appalachians and the Maritimes.
The following is a list of subranges within the Appalachian Mountains, a mountain range stretching ~2,050 miles from Newfoundland and Labrador, Canada to Alabama, US. The Appalachians, at their initial formation, were a part of the larger Central Pangean Mountains along with the Scottish Highlands , the Ouachita Mountains , and the Anti-Atlas ...
The Appalachian Mountains, [b] often called the Appalachians, are a mountain range in eastern to northeastern North America. The term "Appalachian" refers to several ...
The Alleghanian orogeny, a result of three separate continental collisions. USGS. The immense region involved in the continental collision, the vast temporal length of the orogeny, and the thickness of the pile of sediments and igneous rocks known to have been involved are evidence that at the peak of the mountain-building process, the Appalachians likely once reached elevations similar to ...
The orogeny is an early phase of the Caledonian orogeny and overlapped in time with the orogenies that formed the Appalachian Mountains. It was the only orogeny in Laurentia at that time which resulted in deformation, folding and metamorphism. The Fleur de Lys rocks in Newfoundland may have been affected by the Grampian orogeny as well. [1]
Paleogeographic reconstruction showing the Appalachian Basin area during the Middle Devonian period. [9] The "Pennsylvania Salient" in the Appalachians appears to have been formed by a large, dense block of mafic volcanic rocks that became a barrier and forced the mountains to push up around it. 2012 image from NASA's Aqua satellite.
The Appalachian leptoceratopsian that was unearthed in the Tar Heel Formation, which grew to the size of a large dog, had a more slender jaw that teeth that curved downward and outward in its beak. This would imply a specialized feeding strategy for feeding on the foliage that was native to Appalachia during the Campanian. [103]