Fluctuating sea-level and reversing Monsoon winds drive Holocene lagoon infill in Southeast Asia.

ABSTRACT: Many lagoons surrounded by reefs are partially or completely infilled with reef-derived detrital carbonate sediment. Sediment deposits in such restricted environments are archives of prevailing environmental conditions during lagoon infill. For Indonesia, no paleoenvironmental reconstructions based on Holocene lagoon sediments exist. Here we analyze the sedimentary record obtained from five percussion cores penetrating 10 m into the unconsolidated subsurface of a reef island in the Spermonde Archipelago, Indonesia. The combined compositional, textural and chronostratigraphic analyses reveal that the sedimentary infill of the lagoon underlying the island, starting 6900 years cal BP, was interrupted between 5800 and 4400 years cal BP, when sea level was ~ 0.5 m higher than at present, and mo

SUBMITTER: Kappelmann Y 

PROVIDER: S-EPMC10050433 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature