Skip navigation

Volcanogenic clays in Jurassic and Cretaceous strata of England and the North Sea basin

Volcanogenic clays in Jurassic and Cretaceous strata of England and the North Sea basin

Jeans, C.V., Wray, D.S. ORCID: 0000-0002-0799-2730, Merriman, R.J. and Fisher, M.J. (2000) Volcanogenic clays in Jurassic and Cretaceous strata of England and the North Sea basin. Clay Minerals, 35 (1). pp. 25-55. ISSN 0009-8558 (Print), 1471-8030 (Online) (doi:10.1180/000985500546710)

Full text not available from this repository.

Abstract

The nature and origin of authigenic clay minerals and silicate cements in the Jurassic and Cretaceous sediments of England and the North Sea are discussed in relation to penecontemporaneous volcanism in and around the North Sea Basin. Evidence, including new REE data, suggests that the authigenic clay minerals represent the argillization of volcanic ash under varying diagenetic conditions, and that volcanic ash is a likely source for at least the early silicate cements ill many sandstones. The nature and origin of smectite-rich, glauconite-rich, berthierine-rich and kaolin-rich volcanogenic clay mineral deposits are discussed. Two patterns of volcanogenic clay minerals facies are described. Pattern A is related to ash argillization in the non-marine and marine environments. Pattern B is developed by the argillization of ash concentrated in the sand and slit Facies belts in the seas bordering ash-covered islands and massifs. It is associated with regression/transgression cycles which may he related tu thermal doming and associated volcanism, including the submarine release of hydrothermal fluids rich in Fe. The apparent paucity of volcanogenic clay deposits in the Jurasssic and Early Cretaceous sediments of the North Sea is discussed.

Item Type: Article
Additional Information: [1] Published in Clay Minerals, Volume 35, Issue 1, March 2000 - Special Issue.
Uncontrolled Keywords: volcanogenic clays, Jurassic, Cretaceous, argillization, North Sea
Subjects: Q Science > QE Geology
Faculty / Department / Research Group: Faculty of Engineering & Science
Related URLs:
Last Modified: 14 Oct 2016 09:11
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/4249

Actions (login required)

View Item View Item