KSU Sedimentology: Kansas State University and other geosciences departments often maintain mirrors of the .xls file for student use. How to Use GRADISTAT v9.1

: Works directly within Microsoft Excel for a familiar, powerful workflow. Where to Download:

Official distribution is handled by . While older versions (v4 to v8) are commonly available, "v9.1" often refers to internal or specific site-modified versions, as the main public sequence progressed from v8.0 directly toward GRADISTAT-PRO .

Suitable for analyzing data from various techniques, including sieve analyses and laser granulometer results. Key Features of GRADISTAT v9.1

The official distribution point for GRADISTAT is through . Official Software Page : GRADISTAT Software - KPAL Software Overview

Cumulative frequency curves (linear and probability scales).

Entering the percentage (or weight) of sediment retained on each sieve size in the designated spreadsheet, or pasting raw laser granulometer results.

: For the most accurate Folk and Ward calculations, use sieve intervals of at least whole phi ( GRADISTAT software - Kenneth Pye Associates Ltd

Automatically populated ternary diagrams (Sand-Silt-Clay or Gravel-Sand-Mud). Step-by-Step: How to Use GRADISTAT v 9.1

GRADISTAT presents your calculations using multiple frameworks. Selecting the right data presentation depends on your specific reporting standards: Statistical Metric Method of Moments (Metric/Phi) Folk & Ward Graphical Method Utilizes the entire population data distribution. Relies on specific percentiles ( D10cap D sub 10 D50cap D sub 50 D90cap D sub 90 Outlier Sensitivity Highly sensitive to coarse or fine tail-end outliers. Robust and less skewed by extreme, anomalous single grains. Primary Use Case Advanced mathematical modeling of distribution curves.

You should also include the version number used. For example: "Grain size statistics were calculated using GRADISTAT v9.1 software (Blott & Pye, 2001) based on the geometric graphical method (Folk and Ward, 1957)".