Scourianadj.

/ˈskʊrɪən/

/ˈskaʊrɪən/

Etymology: < Scourie, name of a crofting village on the west coast of Sutherland + -an suffix.

Geology.

Of, pertaining to, or designating the earlier metamorphism undergone by the Lewisian rocks of the Pre-Cambrian in NW Scotland, the rocks formed by this metamorphism, and the structures to which they belong. Also absol., these rocks and structures.

ΘΚΠ

the world > the earth > structure of the earth > formation of features > metamorphism > [adjective]

metamorphic1833

thermo-metamorphic1889

post-metamorphic1900

potassic1902

sodic1902

katamorphic1904

symphrattic1904

retrogressive1930

retrograde1932

Scourian1950

1950 Sutton & Watson in Q. Jrnl. Geol. Soc. CVI. 243 In the following pages the Lewisian is..regarded as belonging to two metamorphic complexes, the first, or Scourian, being older and the second, or Laxfordian, younger than the dolerite dykes. These names are taken from localities in Sutherland where the relations of the two complexes are particularly clearly displayed.

1959 Nature 5 Dec. 1793/1 Three samples came from the Outer Hebrides, three from the Laxfordian, and two from the Scourian.

1961 Q. Jrnl. Geol. Soc. 117 241 The Scourian metamorphic rocks in the vicinity of Scourie are primarily hornblende- or pyroxene-bearing gneisses containing very little mica or potassium-feldspar.

1961 Q. Jrnl. Geol. Soc. 117 242 The Scourian metamorphism occurred at least 2460 m.y. ago.

1965 A. Holmes Princ. Physical Geol. (rev. ed.) xiii. 370 (caption) The peaks are of Torridonian Sandstone, resting unconformably on Lewisian Gneiss (Scourian division).

1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles iii. 42 The trend of the Scourian is not known since no really large structures have been found associated with the granulites.

1979 Nature 22 Feb. 643/1 The ∼2,400 Myr age for the emplacement of the Scourie dyke swarm indicates that the Scourian tectonic episode had ceased by the beginning of the Proterozoic.

This entry has not yet been fully updated (first published 1982; most recently modified version published online June 2018).

单词	scourian
释义	Scourianadj. /ˈskʊrɪən//ˈskaʊrɪən/ Etymology: < Scourie, name of a crofting village on the west coast of Sutherland + -an suffix. Geology. Of, pertaining to, or designating the earlier metamorphism undergone by the Lewisian rocks of the Pre-Cambrian in NW Scotland, the rocks formed by this metamorphism, and the structures to which they belong. Also absol., these rocks and structures. ΘΚΠ the world > the earth > structure of the earth > formation of features > metamorphism > [adjective] metamorphic1833 thermo-metamorphic1889 post-metamorphic1900 potassic1902 sodic1902 katamorphic1904 symphrattic1904 retrogressive1930 retrograde1932 Scourian1950 1950 Sutton & Watson in Q. Jrnl. Geol. Soc. CVI. 243 In the following pages the Lewisian is..regarded as belonging to two metamorphic complexes, the first, or Scourian, being older and the second, or Laxfordian, younger than the dolerite dykes. These names are taken from localities in Sutherland where the relations of the two complexes are particularly clearly displayed. 1959 Nature 5 Dec. 1793/1 Three samples came from the Outer Hebrides, three from the Laxfordian, and two from the Scourian. 1961 Q. Jrnl. Geol. Soc. 117 241 The Scourian metamorphic rocks in the vicinity of Scourie are primarily hornblende- or pyroxene-bearing gneisses containing very little mica or potassium-feldspar. 1961 Q. Jrnl. Geol. Soc. 117 242 The Scourian metamorphism occurred at least 2460 m.y. ago. 1965 A. Holmes Princ. Physical Geol. (rev. ed.) xiii. 370 (caption) The peaks are of Torridonian Sandstone, resting unconformably on Lewisian Gneiss (Scourian division). 1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles iii. 42 The trend of the Scourian is not known since no really large structures have been found associated with the granulites. 1979 Nature 22 Feb. 643/1 The ∼2,400 Myr age for the emplacement of the Scourie dyke swarm indicates that the Scourian tectonic episode had ceased by the beginning of the Proterozoic. This entry has not yet been fully updated (first published 1982; most recently modified version published online June 2018). < adj.1950
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