Archaic-style shell concentrations in brackish-water settings: Lower Cretaceous (Wealden) examples from southern England

Research output: Contribution to journalArticle

Authors

  • Jonathan Radley

Colleges, School and Institutes

Abstract

Shell pavements, Shelly gutter and scour fills, and coquinas are described from brackish-water mudrock facies of the southern English Lower Cretaceous (Wealden) successions. These shell concentrations are consistently thin, reflecting small shell sizes, conservative molluscan life-modes, high net deposition and low levels of bioturbation in lacustrine and lagoonal environments. In biostratinomic terms the shell concentrations are of archaic aspect and similar to other occurrences within Mesozoic mudrock formations ascribed to 'stressed', brackish-water settings. As such, Wealden mud-dominated brackish-water settings are identified as a biostratinomic 'window' for generation and preservation of archaicstyle shell concentrations. (C) 2009 Elsevier Ltd. All rights reserved.

Details

Original languageEnglish
Pages (from-to)710-716
Number of pages7
JournalCretaceous Research
Volume30
Publication statusPublished - 1 Jan 2009