AbstractChemical weathering trends were detected within the silt/clay fractions of material taken from the 1750, 1852, and 1928 moraines, of Storbreen, Jotunheimen Mountains, southern Norway. In addition to being compared to each other, moraine samples were also compared to material from the 1975 terminal position of the glacier, a glacial milk sample, and nearby eolian deposits. Results from this reconnaissance study indicate that chemical weathering over∼240 years is not sufficient to be detected by changes in clay/silt ratios. However, x-ray diffraction of the<6μm fraction indicates that pyroxene is absent from materials in the top 20 cm of moraine soils, despite the local parent material being a pyroxene-granulite gneiss. Mica (a primary mineral) decreases with age while vermiculite and interstratified minerals (both secondary minerals) increase. A secondary trend, reflecting a distinction between moraine crest and moraine proximal-side base positions, emerged: in it more mica weathers directly to vermiculite on moraine crests, while at the base of moraines on the proximal side interstratified minerals are more abundant.