Description of Duchene subcatchment database: measured properties along sediment and soil cores and associated metadata

From the perspective of open science, this dataset includes data and medata of four sediment cores and five soil cores collected in the Duchene subcatchment (Martinique, France) in February 2023. These data were collected in order to study the impact of soil erosion on chlordecone transfers (an organochlorine insecticide) along a cultivated hillslope and, ultimately in a reservoir. To this end, a set of different properties were measured : radionuclide activities, carbon and nitrogen isotopes, elemental geochemistry, visible colorimetry, chlordecone and its degradation products concentrations.