释义 |
Definition of pelite in English: pelitenoun ˈpiːlʌɪtˈpēlīt Geology A sediment or sedimentary rock composed of very fine clay or mud particles. the Eastern Cordillera comprises pelites of pre-Ordovician age Example sentencesExamples - In most successions of metamorphic rocks, those with reactive lithologies, such as mature pelites, make up only a small proportion of the rock mass.
- There is no evidence for the superimposition of two entirely separate high-grade metamorphic regimes either in the calc-silicate rocks or in the associated pelites.
- A variety of sedimentary lithologies have been metamorphosed including pelites, psammites, quartzites and carbonates.
- Foliations vary from grain-shape fabrics in quartzites and psammites, to a dominant crenulation cleavage in pelites, with intermediate rocks showing folded cleavage within a bed, and sometimes two cross-cutting cleavages.
- The latter sediments are covered by pelites and sandstones carrying marine invertebrate fossils and deltaic facies with a Glossopteris flora, which indicates an Early Permian age.
Origin Late 19th century: from Greek pēlos 'clay, mud' + -ite1. Definition of pelite in US English: pelitenounˈpēlīt Geology A very fine-grained sediment or sedimentary rock composed of clay or mud particles. the Eastern Cordillera comprises pelites of pre-Ordovician age Example sentencesExamples - Foliations vary from grain-shape fabrics in quartzites and psammites, to a dominant crenulation cleavage in pelites, with intermediate rocks showing folded cleavage within a bed, and sometimes two cross-cutting cleavages.
- There is no evidence for the superimposition of two entirely separate high-grade metamorphic regimes either in the calc-silicate rocks or in the associated pelites.
- In most successions of metamorphic rocks, those with reactive lithologies, such as mature pelites, make up only a small proportion of the rock mass.
- A variety of sedimentary lithologies have been metamorphosed including pelites, psammites, quartzites and carbonates.
- The latter sediments are covered by pelites and sandstones carrying marine invertebrate fossils and deltaic facies with a Glossopteris flora, which indicates an Early Permian age.
Origin Late 19th century: from Greek pēlos ‘clay, mud’ + -ite. |