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1、Page: 1 of 4 LITHOLOGICAL DESCRIPTION 1. Claystone 1. Color: white, off white, grayish white, light gray, gray, dark gray, greenish gray, light brown, dark brown, dusky brown e.g.; 2. Hardness: soft, firm, friable, slightly hard, moderately hard e.g.; 3. Cutting shape: blocky, subblocky, subplaty, p
2、laty, flaky, subflaky, e.g.; 4. 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:2.1Color: white, off white, grayish white, light gray, gray, dark gray, greenish gray, light brown, dark brown, dusky brown
3、e.g.; 2.2Hardness: soft, firm, friable, slightly hard, moderately hard e.g.; 2.3Cutting shape: blocky, subblocky, subplaty, platy, flaky, subflaky, e.g.; 2.4Accessory: argillaceous, sandy, calcareous, pyrite, e.g.;2. Clasolite 2.1 Sandstone: 1. Percentage: 1-100%; 2. Color: colorless, translucent, t
4、ransparent, white, off white, grayish 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 1 页，共 4 页 - - - - - - - - - Page: 2 of 4 white, light gray, gray, dark gray, greenish gray, light brown, dark brown, dusky brown e.g.; 3. Hardness: unconsolidated, poor consolidated,
5、 fair consolidated, good consolidated, e.g.; 4. Grain size: pebble, coarse, medium, fine, very fine, e.g.; 5. Grain shape: angular, subangular, subrounded, rounded; 6. Sorted: poor, fair, well, e.g.; 7. Composition: quartz, feldspar, e.g.; 8. Matrix: clay. e.g.; 9. Cement: calcareous, kaolinitic, si
6、liceous, e.g.; 10. Fossils and Accessories: carbonaceous material, pyrite, e.g.; 11. Porosity: poor, fair, good, no visible porosity; 12. 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, sl
7、ow 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 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 2 页，共 4 页 - - - - - -
8、 - - - Page: 3 of 4 pebble, sandy and argillaceous matrix, subangular to subrounded, good intergranular porosity, no visible cement, no shows. Carbonate: 1. Percentage; 2. Color: white, off white, grayish white, light gray, gray, dark gray, greenish gray; 3. Crystal: cryptocrystalline, microcrystall
9、ine, crystalline, e.g.; 4. Texture: mudstone texture, e.g.; 5. Accessory: clay, carbonaceous materials, e.g.; 6. Porosity: poor, fair, good, visible porosity; 7. Shows (description). Shows: 1. Hydrocarbon odor: none (faint, moderate, strong) + hydrocarbon odor; 2. Oil stain: percentage + distributio
10、n (spotty, patchy, even) + color (yellow, light brown, brown) + oil stains (no visible oil stains); 3. Direct fluorescence: percentage + degree (spotty, patchy, even) +intensity (dull, faint, bright) + color (yellow, golden) + direct fluorescence; 4. Cut fluorescence: percentage + speed (slow, fair,
11、 fast) + 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 3 页，共 4 页 - - - - - - - - - Page: 4 of 4 reaction type (blooming, streaming, instant) + color (white, light yellow, yellow, milky) + cut fluorescence; 5. Residual oil: color (yellow, light brown, brown) + residual oil (no visible residual oil). PERCENTAGE WORDS: Trace: 3%, occasional: 3-10%, minor: 10-25%, common 25-50%, abundant: 50-75%, predominant: 75%名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 4 页，共 4 页 - - - - - - - - -