Aphanitic buildup from the onset of the Mulde Event (Homerian, middle Silurian) at Whitman's Hill, Herefordshire, UK: ultrastructural insights into proposed microbial fabrics

Päßler JF, Jarochowska E, Ray DC, Munnecke A, Worton GJ (2014)


Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2014

Journal

Book Volume: 63

Pages Range: 287-292

Journal Issue: 4

URI: http://www.kirj.ee/24990/?tpl=1061&c_tpl=1064

DOI: 10.3176/earth.2014.32

Open Access Link: http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2014/issue_4/earth-2014-4-287-292.pdf

Abstract

A microbial origin has been proposed for matrix-supported, low-diversity buildups reported from different palaeocontinents during the onset of the Mulde positive carbon isotope excursion. We have investigated a small aphanitic buildup from the Lower Quarried Limestone Member of the Much Wenlock Limestone Formation, exposed at Whitman’s Hill (Herefordshire), corresponding to the central part of the Midland Platform (UK). Up to 50% of the rock volume in this buildup consists of mottled micrite. The SEM studies revealed that the micrite is largely detrital and does not show features characteristic of calcareous cyanobacteria or leiolites. The aphanitic character of the buildup is suggested to be controlled by the depositional rate, and the widespread occurrence of matrix-supported reefs in this interval to be driven by a mid-Homerian rapid eustatic transgression.

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APA:

Päßler, J.-F., Jarochowska, E., Ray, D.C., Munnecke, A., & Worton, G.J. (2014). Aphanitic buildup from the onset of the Mulde Event (Homerian, middle Silurian) at Whitman's Hill, Herefordshire, UK: ultrastructural insights into proposed microbial fabrics. Estonian Journal of Earth Sciences, 63(4), 287-292. https://dx.doi.org/10.3176/earth.2014.32

MLA:

Päßler, Jan-Filip, et al. "Aphanitic buildup from the onset of the Mulde Event (Homerian, middle Silurian) at Whitman's Hill, Herefordshire, UK: ultrastructural insights into proposed microbial fabrics." Estonian Journal of Earth Sciences 63.4 (2014): 287-292.

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