Due to compatibility challenges with newer versions of Excel, some researchers utilize the
Originally developed by geoscientists Simon J. Blott and Kenneth Pye, this macro-enabled spreadsheet automates the laborious mathematical equations required to analyze unconsolidated sediments.
This article serves three purposes:
Open the GRADISTAT file and navigate to the data entry sheet. Input your sieve mesh sizes or laser size boundaries in the designated columns.
While the fundamental formulas date back to the historic and mathematical Method of Moments , ongoing user updates—culminating in specific field-utilized scripts like GRADISTAT v 9.1—ensure it remains highly relevant for laser diffraction and sieve datasets. What is GRADISTAT and Why is it Essential? gradistat v 91 link
The software automatically produces a "Summary Statistics" sheet. This includes:
Dr. Simon Blott and various sedimentology research groups frequently maintain project pages on ResearchGate where the original .xls or .xlsm files are uploaded as supplementary resources to their foundational papers. Due to compatibility challenges with newer versions of
in unconsolidated sediments. Developed by Simon J. Blott and Kenneth Pye, it streamlines the complex calculations required to classify sedimentary environments from data collected via sieving, laser granulometry, or other measuring techniques. Wiley Online Library Software Access and Version 9.1
Because Gradistat v 9.1 is freeware that is no longer officially hosted on the primary CCAP website (which now redirects to a contact page for their commercial software), many third-party sites have hosted the .xla and .xlam files. Downloading Excel macros from untrusted sources can expose you to malware (viruses hidden in VBA code). Input your sieve mesh sizes or laser size
While designed for older Excel versions, it generally works on modern 32-bit and 64-bit systems, though it may require troubleshooting if you experience issues with active-x components.
If you are searching for “gradistat v 91 link,” you are likely looking for version of this software. A search of academic databases and repositories shows that GRADISTAT v9.1 is widely cited in peer‑reviewed literature . For example, researchers have used it to analyze grain size characteristics of beach cusps, reef island sediments, and riverine deposits. In these studies, v9.1 is consistently referenced back to the original 2001 paper by Blott and Pye, indicating that v9.1 is a later version of the same foundational tool.