orthophyren.

Brit.

/ˈɔːθə(ʊ)fʌɪə/, U.S.

/ˈɔrθoʊˌfaɪ(ə)r/

Origin: A borrowing from French. Etymon: French orthophyre.

Etymology: < French orthophyre (H. Coquand 1856, in Mém. de la Soc. d'Émulation du Dép. du Doubs 1 64) < ortho- ortho- comb. form + -phyre (in porphyre porphyry n.).

Geology. Now rare.

A porphyritic rock containing phenocrysts chiefly of orthoclase in a feldspathic groundmass.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > porphyrite rock > subdivision

melaphyre1824

orthophyre1869

granophyre1882

vitrophyre1882

granite-porphyry1885

1869 Amer. Naturalist 3 442 To the lower division, viz.: (2) the Mispeck division, belong, in the lower subdivision, conglomerates and diorites, Cordaite, fine-grained slate and orthophyre.

1895 A. Harker Petrol. viii. 102 The most usual type of orthoclase-porphyry (orthophyre of Rosenbusch) is exemplified by dykes and sills in the Carboniferous of Thuringia.

1930 B. N. Peach & J. Horne Chapters Geol. Scotl. iv. 108 Examples of dykes of orthophyre occur on Sgonnan Mòr.

1954 C. E. Tilley et al. Harker's Petrol. (ed. 8) ix. 109 A few orthophyres are found among the tertiary intrusions of the west of Scotland.

2000 Jrnl. Geodynamics 29 143 The veinlet-like glass in the xenoliths does not extend beyond the xenoliths and the host rock (aegrinite-augite orthophyre).

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).

单词	orthophyre
释义	orthophyren. Brit. /ˈɔːθə(ʊ)fʌɪə/, U.S. /ˈɔrθoʊˌfaɪ(ə)r/ Origin: A borrowing from French. Etymon: French orthophyre. Etymology: < French orthophyre (H. Coquand 1856, in Mém. de la Soc. d'Émulation du Dép. du Doubs 1 64) < ortho- ortho- comb. form + -phyre (in porphyre porphyry n.). Geology. Now rare. A porphyritic rock containing phenocrysts chiefly of orthoclase in a feldspathic groundmass. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > porphyrite rock > subdivision melaphyre1824 orthophyre1869 granophyre1882 vitrophyre1882 granite-porphyry1885 1869 Amer. Naturalist 3 442 To the lower division, viz.: (2) the Mispeck division, belong, in the lower subdivision, conglomerates and diorites, Cordaite, fine-grained slate and orthophyre. 1895 A. Harker Petrol. viii. 102 The most usual type of orthoclase-porphyry (orthophyre of Rosenbusch) is exemplified by dykes and sills in the Carboniferous of Thuringia. 1930 B. N. Peach & J. Horne Chapters Geol. Scotl. iv. 108 Examples of dykes of orthophyre occur on Sgonnan Mòr. 1954 C. E. Tilley et al. Harker's Petrol. (ed. 8) ix. 109 A few orthophyres are found among the tertiary intrusions of the west of Scotland. 2000 Jrnl. Geodynamics 29 143 The veinlet-like glass in the xenoliths does not extend beyond the xenoliths and the host rock (aegrinite-augite orthophyre). This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < n.1869
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