paragneissn.

Brit.

/ˈparənʌɪs/, U.S.

/ˈpɛrəˌnaɪs/

Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: para- prefix¹, gneiss n.

Etymology: < para- prefix¹ + gneiss n., after German Paragneiss (H. Rosenbusch Elem. d. Gesteinlehre (1898) 467; now Paragneis).

Geology.

A form of gneiss derived by metamorphism from sedimentary rocks. Cf. orthogneiss n.

ΘΚΠ

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

ferberite1811

hälleflinta1878

orthogneiss1902

paragneiss1902

1902 A. Harker Petrol. (ed. 3) xxii. 331 All these have the chemical composition of sedimentary rocks; Rosenbusch styles them ‘paragneisses’, in contra-distinction to ‘orthogneisses’, which have the composition of..igneous rocks.

1935 Geogr. Jrnl. 86 269 This is a region of huge Paragneiss massifs, bordered towards the east by less resistant mica schists.

1990 Jrnl. Petrol. 31 565 The assemblage orthopyroxene+magnetite+quartz is common in Adirondack charnockites and other orthogneisses or paragneisses.

This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).

单词	paragneiss
释义	paragneissn. Brit. /ˈparənʌɪs/, U.S. /ˈpɛrəˌnaɪs/ Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: para- prefix¹, gneiss n. Etymology: < para- prefix¹ + gneiss n., after German Paragneiss (H. Rosenbusch Elem. d. Gesteinlehre (1898) 467; now Paragneis). Geology. A form of gneiss derived by metamorphism from sedimentary rocks. Cf. orthogneiss n. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > gneiss > varieties of ferberite1811 hälleflinta1878 orthogneiss1902 paragneiss1902 1902 A. Harker Petrol. (ed. 3) xxii. 331 All these have the chemical composition of sedimentary rocks; Rosenbusch styles them ‘paragneisses’, in contra-distinction to ‘orthogneisses’, which have the composition of..igneous rocks. 1935 Geogr. Jrnl. 86 269 This is a region of huge Paragneiss massifs, bordered towards the east by less resistant mica schists. 1990 Jrnl. Petrol. 31 565 The assemblage orthopyroxene+magnetite+quartz is common in Adirondack charnockites and other orthogneisses or paragneisses. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < n.1902
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