Universidad Complutense de Madrid
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Diagenesis of Late Miocene micritic lacustrine carbonates, Madrid Basin, Spain

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Wright, V.P. y Alonso-Zarza, Ana María y Sanz Montero, Esther y Calvo Sorando, José Pedro (1997) Diagenesis of Late Miocene micritic lacustrine carbonates, Madrid Basin, Spain. Sedimentary Geology, 114 . pp. 81-95. ISSN 0037-0738

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URL Oficial: http://www.journals.elsevier.com/sedimentary-geology



Resumen

Mud-grade lacustrine limestones of Miocene age from the Madrid Basin, Spain, reveal varied and complex diagenetic
histories. Microporous micrites occur as well as micrites with anhedral mosaics. The micrites have recrystallized from
a metastable precursor, in part under sub-oxic meteoric diagenetic conditions probably before extensive karstification in
the Pliocene. The absence of aragonite relics, their mainly micritic microfabric, low Sr content and covariant trend of Sr
and Mg suggest that the micrites formed from mainly high-magnesian calcite muds. Lacustrine micrites can be compared
to marine forms and criteria used to assess the composition of the marine precursor muds can be applied to lacustrine
limestones to complement other techniques to identify original lake water compositions.


Tipo de documento:Artículo
Palabras clave:Diagenesis; Lacustrine; Micrite; Microporosity; Miocene
Materias:Ciencias > Geología > Petrología
Código ID:25319
Depositado:08 May 2014 09:58
Última Modificación:27 Abr 2015 12:14

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