Unusually well preserved casts of halite crystals: A case from the Upper Frasnian of northern Lithuania

Autor:	Julius Vainorius, Alfred Uchman, Piotr Jaglarz, Tomasz Rychliński
Rok vydání:	2014
Předmět:	Stipinai Formation Main Devonian Field Bedding Evaporite Stratigraphy Arenite deformation structures Geochemistry halite casts Mineralogy Sediment haloturbation Geology evaporites engineering.material Diagenesis Lamination (geology) engineering Halite Dissolution
Zdroj:	Sedimentary Geology. 308:44-52
ISSN:	0037-0738
DOI:	10.1016/j.sedgeo.2014.05.005
Popis:	Upper Frasnian carbonate-siliciclastics of the Stipinai Formation (northern Lithuania) comprise a bed of calcareous silty arenite with casts of halite crystals, including hopper crystals. Unusually well-preserved casts occur on the lower surface of the bed, while poorly-preserved casts are present on the upper bedding surface. The casts originated as the result of the dissolution of halite crystals which grew in the sediment. The dissolution took place during early stages of diagenesis, when host sediment was soft. Unstable cavities after crystal dissolution were filled by overlying sediment forming their casts. The collapsing sediment form sink-hole deformation structures which disturb wave–ripple cross lamination from the upper part of the bed. Dewatering pipe structures are also present. The casts and accompanying sink-hole and dewatering pipes are classified as the postdepositional deformation structures caused by haloturbation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2efe8ca14162ccfde7476eee0b878844 https://doi.org/10.1016/j.sedgeo.2014.05.005 Zobrazit plný text záznamu Full Text from ScienceDirect