CONTINENTAL DISPLACEMENT — SCHUCHERT 



271 



Table II. — Geological relations belween N ewfoundland and Ireland — Continued 



Upper Ordovician (Richmond) Is. with 

 rich fauna in St. Lawrence geosyn- 

 cline. 



Lower-middle Silurian, probably well 

 developed in near-shore facies, re- 

 stricted to St. Lawrence geosyncline, 

 butfaunally little known. Anticosti 

 farther west shows limited Swedish 

 and English faunal connections. 



Upper Silurian unknown. 



No orogenic movements or volcanic 



activity. 

 Devonian absent. Land. Volcanic 



activitv in Lower Devonian. 



Making of Acadian Mountains through- 

 out northeast North America in late 

 Devonian. 



Absent. Land. 



Late lower Carboniferous (Windsor) 

 detritals, dolomites, gypsum, and 

 limited marine faunas which connect 

 with southern England and Belgium. 



Absent. 



Coal Measures series of continental 

 type well developed in Acadian 

 trough. Orogeny periodic. 



Absent. Land. 



Marked orogeny of early Permian 

 time but only in southern Appa- 

 lachians. 



Land and erosion. 



Latest Cretaceous with epeirogenic 



elevation. 

 Absent. 



Pliocene epeirogenic elevation. 

 Pleistocene ice sheets. 



May be in Bala series, but if so faunas 

 are wholly unrelated to those of 

 America. 



Entire Silurian appears to be present, 

 thick, in near-shore facies, becoming 

 more and more normally marine, and 

 connects directly with Silurian of 

 Great Britain faunally and strati- 

 graphically. Volcanics present. 

 Faunas not closely related to those 

 of Newfoundland. 



Great orogenic movement, making of 

 Caledonides at close of Silurian. 



Devonian in marked Old Red Sand- 

 stone facies with possibly some 

 marine, 3,000-10,000 feet and pos- 

 sibly 20,000 feet, with volcanic 

 materials. 



No orogeny. 



Lower Carboniferous (Avonian) in 

 massive Is., the chief strata of Ire- 

 land. Rich in fossils with slight 

 American similarities. 



Late lower Carboniferous with vol- 

 canics. Faunas almost unknown, 

 but well known in southwest Eng- 

 land and Belgium. 



Early upper Carboniferous, marine. 



Coal Measures series of continental 

 type once widely present. Orogeny 

 periodic. 



Marine and continental Permian but 

 little developed in Ulster. Widely 

 present in Great Britain and Ger- 

 many. 



Great Permian orogeny but apparently 

 much later than in America. 



Early (red continental) and late Trias- 

 sic (mostly continental) and marine 

 Lias and Upper Cretaceous, all 

 limited to northeast. 



(?) 



Eocene plateau lavas. 



(?) 



Pleistocene ice sheets. 



