aphanitic buildup from the onset of the mulde event (homerian, middle silurian) at whitman's hill, herefordshire, uk: ultrastructural insights into proposed microbial fabrics

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ID: 245191
2014
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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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pler2014estonianaphanitic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Jan-Filip Päßler;Emilia Jarochowska;David C. Ray;Axel Munnecke;Graham Worton
Journal acta pharmaceutica
Year 2014
DOI
10.3176/earth.2014.32
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