augenn.

Brit.

/ˈaʊɡ(ə)n/, U.S.

/ˈaʊɡən/

Origin: A borrowing from German. Etymons: German Augen, Auge.

Etymology: < German Augen, specific use of the plural of Auge eye n.¹ (compare eye n.¹ 10d). With augen-schist compare German Augenschiefer (1876 or earlier, now rare). Compare earlier augen-gneiss n. and the German form cited at that entry.Compare the following example of the German word cited in an English context, in the translation of an influential work:1866 P. H. Lawrence tr. B. von Cotta Rocks Classified ii. ii. 233 Usually it [sc. orthoclase] occurs only in small grains, sometimes larger crystals or lentil-shaped masses so called, swellings or eyes (Schwielen, Augen), with the regular twin growth peculiar to orthoclase (porphyritic gneiss, augen-gneiss).

Geology.

Flattened oval or lens-shaped mineral grains present in some metamorphic rocks, notably augen-gneiss (see augen-gneiss n.). Chiefly attributive, indicating the presence of such grains, as augen-schist, augen structure, etc.Cf. eye n.¹ 10d.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [adjective] > gneiss > varieties of

augen1885

1885 Nature 8 Oct. 559/1 In some of these crystalline schists (the augen-schists) the larger crystals of the original rock from which the schist was formed, are still individually recognisable.

1890 Proc. Geologists' Assoc. 1889–90 11 186 There are three definite steps—flaser-gabbro, augen-gabbro, and schistose-gabbro—before we lose sight of that rock.

1894 Proc. Geologists' Assoc. 1893–4 13 48 The crushed granite of Ben Vuroch in which the recrystallized flaser material forms with the remnants of the felspar crystals (augen) a true augen-gneiss or schist.

1910 Encycl. Brit. XII. 149/2 When large felspars, of rounded or elliptical form, are visible in the gneiss, it is said to have augen structure.

1925 N. E. Odell in E. F. Norton et al. Fight for Everest: 1924 iii. iii. 297 It would certainly appear that the augen variety [of gneisses] were the younger and intrusive facies.

1958 J. W. Clarke Bedrock Geol. Danbury Quadrangle (State Geol. & Nat. Hist. Surv. of Connecticut, Quadrangle Rep. No. 7) 12 The Danbury region augen granite is a porphyritic gneissic granite.

1972 P. S. Saklani in A. G. Jhingran et al. Himalayan Geol. II. 353 The gneiss also develops streaks and augen of felspar.

2008 S. Singh & A. K. Jain in Pan-African Event, India & Antarctica 73/1 Both the margins of this body are sheared, hence the granite is metamorphosed to augen mylonite, mylonite and augen schist.

This entry has been updated (OED Third Edition, September 2017; most recently modified version published online December 2021).

单词	augen
释义	augenn. Brit. /ˈaʊɡ(ə)n/, U.S. /ˈaʊɡən/ Origin: A borrowing from German. Etymons: German Augen, Auge. Etymology: < German Augen, specific use of the plural of Auge eye n.¹ (compare eye n.¹ 10d). With augen-schist compare German Augenschiefer (1876 or earlier, now rare). Compare earlier augen-gneiss n. and the German form cited at that entry.Compare the following example of the German word cited in an English context, in the translation of an influential work:1866 P. H. Lawrence tr. B. von Cotta Rocks Classified ii. ii. 233 Usually it [sc. orthoclase] occurs only in small grains, sometimes larger crystals or lentil-shaped masses so called, swellings or eyes (Schwielen, Augen), with the regular twin growth peculiar to orthoclase (porphyritic gneiss, augen-gneiss). Geology. Flattened oval or lens-shaped mineral grains present in some metamorphic rocks, notably augen-gneiss (see augen-gneiss n.). Chiefly attributive, indicating the presence of such grains, as augen-schist, augen structure, etc.Cf. eye n.¹ 10d. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [adjective] > gneiss > varieties of augen1885 1885 Nature 8 Oct. 559/1 In some of these crystalline schists (the augen-schists) the larger crystals of the original rock from which the schist was formed, are still individually recognisable. 1890 Proc. Geologists' Assoc. 1889–90 11 186 There are three definite steps—flaser-gabbro, augen-gabbro, and schistose-gabbro—before we lose sight of that rock. 1894 Proc. Geologists' Assoc. 1893–4 13 48 The crushed granite of Ben Vuroch in which the recrystallized flaser material forms with the remnants of the felspar crystals (augen) a true augen-gneiss or schist. 1910 Encycl. Brit. XII. 149/2 When large felspars, of rounded or elliptical form, are visible in the gneiss, it is said to have augen structure. 1925 N. E. Odell in E. F. Norton et al. Fight for Everest: 1924 iii. iii. 297 It would certainly appear that the augen variety [of gneisses] were the younger and intrusive facies. 1958 J. W. Clarke Bedrock Geol. Danbury Quadrangle (State Geol. & Nat. Hist. Surv. of Connecticut, Quadrangle Rep. No. 7) 12 The Danbury region augen granite is a porphyritic gneissic granite. 1972 P. S. Saklani in A. G. Jhingran et al. Himalayan Geol. II. 353 The gneiss also develops streaks and augen of felspar. 2008 S. Singh & A. K. Jain in Pan-African Event, India & Antarctica 73/1 Both the margins of this body are sheared, hence the granite is metamorphosed to augen mylonite, mylonite and augen schist. This entry has been updated (OED Third Edition, September 2017; most recently modified version published online December 2021). < n.1885
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