| 释义 |
peloid|ˈpiːlɔɪd|
[f. Gr. πηλ-ός clay, mud + -oid.]
1. (See quots.)
1933S. J. Lewis in Arch. Med. Hydrol. XI. 181 (heading) Semi-solid bath media or ‘peloids’. Ibid. 265/1 The word Peloid (Greek, πηλος) should be used as a generic name for all forms of muds, moors, etc... Artificial preparations might be described as artificial peloids. 1953W. Kosmath Brit. Pat. 695,916 This invention relates to a method for the manufacture of therapeutically effective agents for peloids, which term is here intended to mean bog peat, organic slimes, muds, clays formed by weathering, marl and the like.
2. Geol. A particle of microcrystalline or cryptocrystalline carbonate.
1963E. McKee Prof. Papers U.S. Geol. Survey No. 475-c. 21/2 Grains within the limestone range in size from fine to very coarse and consist of both bioclasts and peloids (intraformational clastic particles), commonly in an aphanitic calcite matrix. 1969― & Gutschick in Mem. Geol. Soc. Amer. CXIV. 24 Peloids are defined as ovoid particles of microcrystalline or cryptocrystalline material. Ibid. 555 Beds of peloids that seem to be the result of lime-mud deposits having been disturbed and broken up into particles are common. 1972Nature 25 Feb. p. ix/1 (Advt.), Petrography of carbonate grains: oöids, pisolites, peloids and other micritic fabrics. 1976R. C. Selley Introd. Sedimentology v. 117 Studies of modern carbonate sediments show that peloids form by a variety of processes. Ibid., In..lagoons and sheltered embayments, peloids are sufficiently abundant to be a dominant rock builder.
Hence peˈloidal a.
1933S. J. Lewis in Arch. Med. Hydrol. XI. 182/1 Peloid..is applicable in all languages in the same way as colloid or alkaloid, giving plurals and adjectives (e.g. ‘peloidal’) to the same models. 1969McKee & Gutschick in Mem. Geol. Soc. Amer. CXIV. 555 Peloidal limestone is defined as rock composed dominantly of particles of cryptocrystalline or microcrystalline material, commonly ovoid in shape. 1976Nature 20 May 221/2 A thin oncolitic iron formation is interbedded with peloidal and oolitic ferruginous chert. |