Color contrast classes
degree of color distinction (color contrast) between colors within a soil are categorized asfaint,distinctandprominent.
Committee
Trace Materials
Date Added to Lexicon
Standard Source (Designation Number Title of Standard. Publisher, Place, Year.)
ANSI/ASTM E3254-23 Standard Practice for Use of Color in the Visual Examination and Forensic Comparison of Soil Samples. ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428, 2023.
Source link
Reprinted, with permission, from ASTM, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be purchased from ASTM International, https://www.astm.org