Dominican amber deposits research data
Description
Mineralogical and geochemical data of amber-bearing sediments from the Dominican Republic. The analytical material come from the Siete Cañadas area (SC-02 borehole) in Eastern Mining Districts of the Dominican Republic, where layers hosting amber reach up to 1.61 m of the thickness. The amber-bearing rock samples were taken from the cores repository in the Yanigua site, by the co-authors of this paper. They were collected from a depth of 19.5 m (SC1), 19.85 m (SC2), 20.25 m (SC3) and 20.5 m (SC4) below the ground level. The aim of the study was to elucidate depositional environment of the amberiferous rocks based on host rocks mineralogy and geochemistry of associated organic matter. Novel data from scanning electron-microscopy (SEM-EDS), Fourier Transform-Raman spectroscopy (FT-RS), Powder X-ray diffraction (PXRD), Gas Chromatography–Mass Spectrometry (GC-MS) and Rock-Eval analysis were integrated into palaeogeographic chronology of depositional events and modelled burial history. Additional data on organic geochemistry of amber-bearing rocks from La Cumbre deposit (LC1-LC3) in Northern Mining District was obtained in order to complete the petrogenetic characterization reported previously by Stach et al. (2020).