Option 2 Methodology Sample Clauses

Option 2 Methodology. The source geological data may be divided into bedrock and superficial; if so the initial step is to discard the bedrock data. If however the source data is not separated into bedrock and superficial run the query on the combined geology layer (see Error! Reference source not found.). Building on the ‘Select by attributes’ query created in Option 1 all formations containing sand and gravel as any part of their description can be identified. A second query shown below can then be run on the extracted sand and gravel results to identify and allow removal of formations whose descriptions include clay, silts and silt (see Figure 6).