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单词 eugeosynclinal
释义

eugeosynclinaladj.

/ˌjuːdʒiːəʊsɪŋˈklʌɪnəl/
Etymology: < German eugeosynklinal (H. Stille Einführung in den Bau Amerikas (1941) i. 15): compare eu- comb. form, geosynclinal adj.
Geology.
Of or pertaining to a eugeosyncline.
ΘΚΠ
the world > the earth > structure of the earth > structural features > fold or dip > [adjective] > geosyncline
geosynclinal1873
orthogeosynclinal1941
eugeosynclinal1942
miogeosynclinal1942
parageosynclinal1951
miogeoclinal1971
eugeoclinal1972
1942 Bull. Geol. Soc. Amer. 53 1644 The great thrusting in the Virginian–Pushmataha belt may be limited to the area in which it lies on eugeosynclinal facies.
1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles iv. 72 The Welsh Caledonian or Lower Palaeozoic Geosyncline..has something in common with the theoretical eugeosynclinal concept.
1977 A. Hallam Planet Earth 196/1 The scale and intensity of deformation may have been such as to force slices of the eugeosynclinal facies along shallow-dipping thrust planes into the miogeosynclinal or even the kratonic regions.
1984 D. L. Dineley Aspects Stratigr. Syst.: Devonian ix. 163/1 Eugeosynclinal rocks of Devonian age are widespread and include thick black shales, limestone lenses, thick cherts and greywackes, some conglomeratic spreads and enormously thick andesitic and basaltic volcanics.

Derivatives

eugeoˈsyncline n. a geosyncline in which material of volcanic origin predominates.
ΘΚΠ
the world > the earth > structure of the earth > structural features > fold or dip > [noun] > geosyncline
geosynclinal1873
geosyncline1883
parageosyncline1923
orthogeosyncline1936
eugeosyncline1942
miogeosyncline1942
miogeocline1966
eugeocline1972
1942 Bull. Geol. Soc. Amer. 53 1642 In contrast to the Magog eugeosyncline, the Champlain belt contains dominant carbonates of shallow-water origin, unaffected by subsequent volcanism.
1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles iv. 71 The standard type of geosyncline, or Eugeosyncline, typically includes sediments which are chiefly dark shales and greywackes.
1980 Nature 29 May 289/1 The western, volcanosedimentary ‘eugeosyncline’ of the North American Cordillera is a collage of terrains of varied origins that apparently became attached to the western continental margin of the continent at different times.
This entry has not yet been fully updated (first published 1993; most recently modified version published online June 2018).
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adj.1942
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