A free and open-source web application for field geological and sedimentological core logging. Create sedimentary logs in the field using any device with a browser.
- Create and manage multiple sedimentary log profiles with GPS metadata
- Record detailed bed data: lithology (up to 3 components), grain size, sedimentary structures, bioturbation, boundaries, paleocurrents, and facies
- Profile and bed photo uploads, bed audio recordings
- Drag-and-drop bed reordering
- CSV export compatible with SedLog, plus bulk export (ZIP)
- Customizable reference data with standard sedimentological schemes pre-loaded
- Database backup and restore (JSON or full ZIP with photos and audio), read-only JSON API
- SQLite database, no external services required
📖 Full documentation at gneisswork.app/docs
 Home |
 Reference Data |
 Settings |
 New Log |
 Edit Log |
 New Bed |
⚠️ Known Issue: The Android APK is currently crashing on startup. This is being actively investigated. The web app (desktop/browser) works fine in the meantime.
Download the latest APK from the Releases page. Install it, and the app runs completely offline — Python, Flask, and SQLite are all bundled in.
git clone https://github.com/stark1tty/Gneisswork.git
cd Gneisswork
python run.pyrun.py automatically installs dependencies from sedmob/requirements.txt on startup. No virtual environment setup needed for a quick start, though one is recommended for development (see Getting Started).
Open http://localhost:5000.
git clone https://github.com/stark1tty/Gneisswork.git
cd Gneisswork
docker compose up -d📖 Getting Started guide for full details including configuration and testing.
| Topic | Description |
|---|---|
| Getting Started | Installation, configuration, Docker, testing |
| Web UI Guide | Using the web interface |
| API Reference | Read-only REST API at /api |
| Data Models | Database schema |
| CSV Export | Export format and SedLog compatibility |
| Reference Data | Customizing lithologies and structures |
| Architecture | Technical overview |
| Contributing | Development workflow |
| Roadmap | Planned features and progress |
Originally developed as a Cordova mobile app by Pawel Wolniewicz, described in:
Wolniewicz, P. (2014). SedMob: A mobile application for creating sedimentary logs in the field. Computers & Geosciences, 66, 211-218. doi:10.1016/j.cageo.2014.02.004
This version is a Python/Flask rewrite designed to run on any device with a browser.
📖 Citing Gneisswork — BibTeX entries for academic use.
GNU General Public License v2.0 (or later), the same license as the original SedMob project.