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Beachrock variability and sea level implications from a subtropical coastal setting: a preliminary study

Kelly, Chris, Green, Andy, Cooper, Andrew and Wiles, Errol (2014) Beachrock variability and sea level implications from a subtropical coastal setting: a preliminary study. Journal of Coastal Research, S.I. 7 . pp. 736-742. [Journal article]

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Abstract

In spite of the worldwide abundance of beachrocks and their acknowledged utility as an indicator of former sea level position, some studies have expressed doubt as to their position of cementation on paleo shorelines. These criticisms are not, however, coupled with nuanced sedimentological studies of beachrocks. Instead, few beachrock studies acknowledge any facies and therefore disregard important signatures of the depositional environment and, consequently, utility as paleo sea level indicators. This study presents detailed sedimentological descriptions and interpretations from two beachrock localities along the subtropical, microtidal, wave-dominated eastern coastline near Durban, South Africa. The outcrops record the migration of a paleo inlet and deposition in sub, inter, and supra tidal environments. Understanding the inferred depositional environment, and observed stratigraphic relationships between various beachrock facies is critical to teasing out the local evolution of shoreline and relative sea level. The outcrops studied here record multiple episodes of Holocene sea level rise and fall.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences > School of Geography and Environmental Sciences
Faculty of Life and Health Sciences
Research Institutes and Groups:Environmental Sciences Research Institute > Coastal Systems
Environmental Sciences Research Institute
ID Code:29470
Deposited By: Professor Andrew Cooper
Deposited On:13 May 2014 08:35
Last Modified:13 May 2014 08:35

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