protolithn.

Brit.

/ˈprəʊtə(ʊ)lɪθ/, U.S.

/ˈproʊdoʊˌlɪθ/,

/ˈproʊdəˌlɪθ/

Origin: Formed within English, by compounding. Etymons: proto- comb. form, -lith comb. form.

Etymology: < proto- comb. form + -lith comb. form. Compare earlier protolithic adj.

Geology.

The parent rock from which a given metamorphic rock developed.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > source material

protolith1960

1960 Bull. Geol. Soc. Amer. 71 531 Two contrasting intergradational lithic assemblages..characterize the protolith of the bedded rocks.

1974 Nature 15 Mar. 199/1 This investigation attempts to decipher the premetamorphic age of the protolith of a recrystallised breccia from Apollo 16.

1990 Jrnl. Petrol. 31 719 The data that we present suggest that the protoliths of these rocks were plagioclase-rich, low-pressure fractionation products.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	protolith
释义	protolithn. Brit. /ˈprəʊtə(ʊ)lɪθ/, U.S. /ˈproʊdoʊˌlɪθ/, /ˈproʊdəˌlɪθ/ Origin: Formed within English, by compounding. Etymons: proto- comb. form, -lith comb. form. Etymology: < proto- comb. form + -lith comb. form. Compare earlier protolithic adj. Geology. The parent rock from which a given metamorphic rock developed. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > source material protolith1960 1960 Bull. Geol. Soc. Amer. 71 531 Two contrasting intergradational lithic assemblages..characterize the protolith of the bedded rocks. 1974 Nature 15 Mar. 199/1 This investigation attempts to decipher the premetamorphic age of the protolith of a recrystallised breccia from Apollo 16. 1990 Jrnl. Petrol. 31 719 The data that we present suggest that the protoliths of these rocks were plagioclase-rich, low-pressure fractionation products. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1960
随便看	little perisher little person little pickle little piecer little piked whale little pitchers have big ears little pox little purpose little ray of sunshine little red book little review little rhody little ringed plover little russian little science little screech owl little screen little season little shilling little sister little slam little son little stranger little summer of st luke little sunflower