Modelling size constraints on carbonate platform formation in groundwater upwelling zones

Mark N. Keppel; Vincent E.A. Post; Andrew J. Love; Adrian D. Werner; Jonathan D.A. Clarke; Todd Halihan

doi:10.1038/s41598-018-35771-z

Modelling size constraints on carbonate platform formation in groundwater upwelling zones

Mark N. Keppel, Vincent E.A. Post, Andrew J. Love, Adrian D. Werner, Jonathan D.A. Clarke, Todd Halihan

College of Science and Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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Abstract

Carbonate depositional systems related to groundwater upwelling are ubiquitous around the world and form ecologically and culturally important features of many landscapes. Spring carbonate deposits record past climatic and hydrological conditions. The reconstruction of past processes using spring carbonate proxies requires fundamental understanding of the factors that control their geometry. In this work, we show that the spatial extent of spring carbonate platforms is amenable to quantitative prediction by simulating the early growth stage of their formation for the iconic mound springs in the central Australian outback. We exploit their well-defined, circular geometry to demonstrate the existence of two size-limiting regimes: one controlled by the spring flow rate and the other by the concentration of lattice ions. Deviations between modelled and observed size metrics are attributable to diminishing spring flow rates since formation, enabling assessment of the relative vulnerability of springs to further hydrological change.

Original language	English
Article number	17460 (2018)
Number of pages	11
Journal	Scientific Reports
Volume	8
DOIs	https://doi.org/10.1038/s41598-018-35771-z
Publication status	Published - 29 Nov 2018

Bibliographical note

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

Keywords

carbonate depositional systems
groundwater upwelling
spring flow rate
lattice ions

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Modelling size constraints on carbonate platform formation in groundwater upwelling zones

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Keywords

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