Document Type

Conference Proceeding

Publication Date

2024

Publication Title

Current Challenges of Science and Education, Proceedings of the 10th International Scientific and Practical Conference

Abstract

Concentrations of large mollusc shells in coastal deposits provide important information about the local malacofauna and potential transport agents, including extreme events [1-4]. Such accumulations are common in the rock record [5,6], with Quaternary examples serving as good time-averaged examples by combining aspects of both the modern biocoenoses and the fossil record. Death assemblages of local organisms (thanatocoenosis) and their preserved record (taphocoenosis) in carbonate settings, where granulometric spectrum may be very limited (e.g., ooilitic sand), can serve as important paleo-environmental indicators, especially when considered in combination with primary sedimentary structures (in outcrops or geophysical images) and in situ biogenic structures (trace fossils)[7]. Along prograded beach/dune ridge complexes (strandplains) [8], extensive accumulations of large nearshore mollusc shells are likely related to extreme events, such as intense storms [1]. This study reports on an anomalous accumulation of mostly juvenile conch shells (Aliger sp.) along one of the oldest (landwardmost) paleoshorelines of the Plum Creek Beach in Freetown, southern Eleuthera Island, The Bahamas (Fig. 1). Shell preservation is assessed using semi-quantitative taphonomic grades.

First Page

243

Last Page

248

Comments

Current Challenges of Science and Education, Proceedings of the 10th International Scientific and Practical Conference. MDPC Publishing, Berlin, Germany.

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