Geoloweb. ch is the personal website of Julien M. Allaz, bringing together his interests and work in geology, photography, and web application development.

The site features resources connected to two long-running projects in chemical analysis using electron probe microanalysis and scanning electron microscopy: De-MA, a database for electron and X-ray microanalysis, and FIGMAS, a focused interest group for microanalytical standards. Visitors can also explore extensive photography from regions Allaz has visited for geological fieldwork, hiking, and tourism, including locations in Switzerland, France, Italy, Germany, and the United States. The photographs are presented as work created without the use of AI.

Another section showcases samples from his private collection, including minerals, fossils, veins, and sedimentary, plutonic, volcanic, and metamorphic rocks; the specimens are not for sale. Geoloweb also provides older publications and research materials related to Allaz’s studies of Alpine geology, including his PhD research on the age of Alpine metamorphism in northern Ticino and a diploma project on metamorphism and structural geology at Alpe Larecc