Murphy, P and Hodgson, DH (2017) Revisiting the "reefs" of Black Reef Cave, Ribblehead, North Yorkshire, UK with some observations on cave divers "chert". Cave and Karst Science, 44 (1). pp. 43-45. ISSN 1356-191X
Abstract
A re-study of black materials encountered in Black Reef Cave as sheets cutting across the main passage has shown that they have influenced the passage morphology. Upstream of the reefs the passages have a typical phreatic tube-like cross-section, whereas downstream the passage cross-section is that of a vadose canyon, suggesting that the reefs have ponded water, resulting in the development of small, perched, phreatic loops. The reefs consist of a core of crystalline calcite surrounded by black manganese/iron material. It is proposed that calcite vein-mineralization along joints caused the ponding of water and the manganese/iron material is secondary, and either deposited preferentially on, or preserved on, the calcite veins. Other similar occurrences and possible occurrences in the region are discussed.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2017, Author (s). This is an author produced version of a paper published in Cave and Karst Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Keywords: Black Reef Cave; phreatic tube; vadose canyon; calcite; manganese; iron |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst of Geophysics and Tectonics (IGT) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 Jun 2017 09:23 |
Last Modified: | 18 Jul 2017 11:08 |
Status: | Published |
Publisher: | British Cave Research Association |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:118133 |