Geology and Soils in Timor-Leste is a short desk-study report by Steve Thompson on the connection between the geology of the half-island country and the currently known distribution of soil types.

The report shows how basic information on Timorese soil was collected and published around 1961 in the Carta Dos Solos de Timor (Soil Map of Timor).

These maps were digitized in 2004 and the information was re-interpreted and upgraded according to the 1990 soil classification of the United States Department of Agriculture (USDA).

According to Thompson a simplified soil classification, with reference to local soils based on the relative proportions of silt, sand and clay, and providing information on soil conditions and soil fertility across the country would be a valuable input for location-specific agricultural development.

The full report can be read here.