Geological stratigraphic column scale calculator

Calculate layer display heights and scale denominator with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use layer display heights and scale denominator to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Stratigraphic thicknesses (m)
10,5,20
Usable page height (mm)
250
Total annotation gaps (mm)
20
Layer display heights (mm)
[65.7142857143,32.8571428571,131.428571429]
Scale denominator
152.173913

Try another scenario

Stratigraphic thicknesses (m)
[10, 5, 20]
Usable page height (mm)
300
Total annotation gaps (mm)
20
Layer display heights (mm)
[80,40,160]
Scale denominator
125
Calculation method

Calculation method

Layer display heights (mm)

Distribute page height minus annotation gaps proportional to layer thickness.

Scale denominator

Total real thickness in millimeters / drawable height.

Symbols and units
a
Stratigraphic thicknesses (m)
b
Usable page height (mm)
c
Total annotation gaps (mm)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Unit thicknesses, page height, annotations. Returns Scaled layer heights. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Stratigraphic thicknesses (m): minimum 1e-12, maximum 1000000000000.0. Usable page height (mm): minimum 1e-12, maximum 1000000000000.0. Total annotation gaps (mm): minimum 0, maximum 1000000000000.0.
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