Heavy mineral variations in mid-Carboniferous deltaic sandstones: Records of a pre-depositional sediment history?

ABSTRACT: Sandstone composition is influenced by multiple factors, including acidic weathering, occurring during storage in the hinterland, prior to deposition. This study aims to better understand and constrain how the nature and duration of such pre-depositional factors might impact the final sediment composition. Mid-Carboniferous deltaic sandstones from the Clare Basin, western Ireland, for which depositional environments and provenance are well constrained, are the target of this study. Conventional heavy mineral analysis and specific heavy mineral ratios, such as the apatite-tourmaline index are utilised to examine these phenomena. Relatively high apatite-tourmaline index values observed in channelised sandstones contrast with lower values seen in sandstones associated with mouth bar and inter

SUBMITTER: Nauton-Fourteu M 

PROVIDER: S-EPMC7986101 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature