Description
thickness = bottomDepth-topDepth; residual = suppliedThickness-thickness.
Geological records use depth datums, age-before-present coordinates and recovery definitions. A signed difference or recovered-length ratio can expose a supplied inconsistency without reconstructing geological history or correcting sample loss.
thickness = bottomDepth-topDepth; residual = suppliedThickness-thickness.
When to use this tool
Use Stratigraphic Layer Thickness Gap when checking an explicit geological coordinate, interval or recovery convention.
How to use the tool and how it works
- Enter topDepth, bottomDepth, suppliedThickness. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read thickness, residual. Use the output convention below.
Require bottomDepth >= topDepth and nonnegative suppliedThickness. thickness = bottomDepth-topDepth; residual = suppliedThickness-thickness.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| topDepth | Top Depth | Required. Finite number. |
| bottomDepth | Bottom Depth | Required. Finite number. |
| suppliedThickness | Supplied Thickness | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| thickness | Thickness | Required. Finite number. |
| residual | Residual | Required. Finite number. |
{
"input": {
"topDepth": 10,
"bottomDepth": 15,
"suppliedThickness": 4
},
"output": {
"thickness": 5,
"residual": -1
}
}Limitations and assumptions
- Depths share a positive-down coordinate and length basis. The residual is supplied-minus-coordinate thickness, not a dip correction, compaction model or geological consistency verdict.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use verified datums, original logs and appropriate geological interpretation when correlating units or reconstructing missing intervals.
References
Similar or alternative tools
- Stratigraphic Depth Interval Thickness
signedThickness = (bottomDepth-topDepth)*scale, negated when positiveDown is false; absoluteThickness = abs(bottomDepth-topDepth)*scale.
- Lithology Log Interval Share
overlapThickness is the nonnegative intersection of the two depth intervals; logShare divides it by logBase-logTop.