英文岩性描述规范.doc

LITHOLOGICAL DESCRIPTION 1. Claystone Color: white, off white, grayish white, light gray, gray, dark gray, greenish gray, light brown, dark brown, dusky brown e.g.; Hardness: soft, firm, friable, slightly hard, moderately hard e.g.; Cutting shape: blocky, subblocky, subplaty, platy, flaky, subflaky, e.g.; Accessory: silty, sandy, calcareous, pyrite, e.g.; Example: CLYST: lt gy-med gy, occ dk gy, sbblky-blky, mod hd, mic mica, sl calc. 2. Siltstone: Color: white, off white, grayish white, light gray, gray, dark gray, greenish gray, light brown, dark brown, dusky brown e.g.; Hardness: soft, firm, friable, slightly hard, moderately hard e.g.; Cutting shape: blocky, subblocky, subplaty, platy, flaky, subflaky, e.g.; Accessory: argillaceous, sandy, calcareous, pyrite, e.g.; 2. Clasolite 2.1 Sandstone: Percentage: 1-100%; Color: colorless, translucent, transparent, white, off white, grayish white, light gray, gray, dark gray, greenish gray, light brown, dark brown, dusky brown e.g.; Hardness: unconsolidated, poor consolidated, fair consolidated, good consolidated, e.g.; Grain size: pebble, coarse, medium, fine, very fine, e.g.; Grain shape: angular, subangular, subrounded, rounded; Sorted: poor, fair, well, e.g.; Composition: quartz, feldspar, e.g.; Matrix: clay. e.g.; Cement: calcareous, kaolinitic, siliceous, e.g.; Fossils and Accessories: carbonaceous material, pyrite, e.g.; Porosity: poor, fair, good, no visible porosity; Shows (description). Examples: Sst: lithic, lt gy, off wh, vf-f gr, occ med gr, sbang-sbrd, mod w srtd, fri, arg, mica, glau, p-fr vis por, tr-5% blu wh fluor, slow strmg bl wh cut, no cut color, no res, p oil show. 2.2 conglomerate Description example: variegated, gray to dark gray, black, green, brown, milky yellow, loose multiple colored granule and small pebble, sandy and argillaceous matrix, subangular to subrounded, good intergranular porosity, no visible cement, no shows. Carbonate: Percentage; Color: white, off white, grayi