Sedimentological and morphological characteristics of gypseous coastal nabkhas on Bubiyan Island, Kuwait, Arabian Gulf

Autor:	F.I. Khalaf, Jasem M. Al-Awadhi
Rok vydání:	2012
Předmět:	Mineral Gypsum Ecology Berm Geochemistry Authigenic engineering.material Diagenesis engineering Aeolian processes Aeolian landform Geomorphology Quartz Ecology Evolution Behavior and Systematics Geology Earth-Surface Processes
Zdroj:	Journal of Arid Environments. 82:31-43
ISSN:	0140-1963
DOI:	10.1016/j.jaridenv.2012.02.017
Popis:	Gypseous nabkhas of peculiar morphology occur on the beach berm and backshore slope along the southern coast of Bubiyan Island in northeast Kuwait. Their sediments are muddy sands and are mainly composed of gypsum with small amounts of shells, shell fragments, quartz and feldspars. Two types of gypsum are recognised: detrital grains and authigenic crystals. The authigenesis of gypsum within the nabkha detrital sediments is responsible for the significant increase in the volume of the nabkhas as well as considerable change in their morphology from a standard aerodynamic form to a whaleback shape. The genesis and diagenesis of the nabkha sediments are discussed, and future studies are recommended. The study concluded that mineral authigenesis within aeolian nabkha sediments should be seriously considered during the interpretation of their granulometrical characteristics and morphometric parameters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de25581dd85ca47d2ad87c6e08446c4c https://doi.org/10.1016/j.jaridenv.2012.02.017 Zobrazit plný text záznamu Full Text from ScienceDirect