Encyclopedia of Geobiology

2011 Edition
| Editors: Joachim Reitner, Volker Thiel

Mud Mounds

  • Marta Rodríguez-Martínez
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-9212-1_153


Biodetrital mound; Carbonate mounds; Carbonate mud mound; Lime mud mound; Microbial mound; Mudbank; Reef mound; Stromatactis mounds


Mud mounds are biosedimentary buildups, part of the reef system and are dominated by fine-grained carbonates (up and more than 50% of rock volume), which form heterogeneous polygenetic matrix-supported fabrics (stromatolitic, thrombolitic, leiolitic, fenestral, laminar, reticulate, stromatactoid, etc.). These fabrics are composed of both allomicrites and automicrites (abiogenetic, biogenetically induced, and biogenetically controlled). Production and accretion mechanisms in mud mounds are varied and not always clear, but are associated with the activity of microbial benthic communities (in different degrees of participation). Metazoans, being important colonizers, can or cannot occur but never produce a primary skeletal framework. Mud mounds colonized the oceans from the Proterozoic times, and they grow up from deep aphotic basinal...


Extracellular Polymeric Substance Benthic Foraminifera Marine Cementation Skeletal Framework Peloidal Micrites 
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© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Marta Rodríguez-Martínez
    • 1
  1. 1.Departamento de Geología Facultad de BiologíaUniversidad de AlcaláAlcalá de HenaresSpain