Exceptionally well-preserved vegetal remains from the Upper Cretaceous of "Lo Hueco", Cuenca, Spain

Cambra-Moo, Oscar and Barroso-Barcenilla, Fernando and Coruña, Francisco and Postigo Mijarra, Jose Maria (2013). Exceptionally well-preserved vegetal remains from the Upper Cretaceous of "Lo Hueco", Cuenca, Spain. "Lethaia" (n. 46); ISSN 0024-1164.

Description

Title: Exceptionally well-preserved vegetal remains from the Upper Cretaceous of "Lo Hueco", Cuenca, Spain
Author/s:
  • Cambra-Moo, Oscar
  • Barroso-Barcenilla, Fernando
  • Coruña, Francisco
  • Postigo Mijarra, Jose Maria
Item Type: Article
Título de Revista/Publicación: Lethaia
Date: 2013
ISSN: 0024-1164
Subjects:
Faculty: E.T.S.I. Montes (UPM)
Department: Silvopascicultura [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Vegetal remains are considered labile structures that quickly become decayed in ecosystems. However, certain lignified tissues (woody plants) can largely resist decomposition, becoming sometimes exceptionally well preserved. At the Upper Cretaceous site of ?Lo Hueco? (Cuenca, Spain), those woody remains (trunks and branches) with resinous material in the inner tracheids and parenchyma cells that were buried rapidly under anoxic conditions experienced a low degree of maturation, becoming exceptionally well preserved. Those woody remains deposited under oxic conditions (subaerial or sub-aquatic exposure) were more intensely biodegraded and subsequently carbonified, partially or completely mineralized in gypsum and covered by a ferruginous crust. These two modes of preservation are scarce, with silicification or carbonification processes much more common, and both can be considered as ?exceptional preservation?. Other vegetal remains, such as carbonified leaves, stems and roots, were collected in the site. The different modes of preservation depend directly on: depositional micro-environment (sandy distributary channel, muddy flood plain); and type (trunk, branch, stem, leave, root) and state (presence or absence of resinous material) of the material. The great abundance and diversity of fossils in ?Lo Hueco? identify it as Konzentrat-Lagersta¿tten, sequentially formed by alternated events of flooding and drying depositional events, but the exceptional quality and rarity of determinate vegetal macroremains preservation suggest that certain deposits of this site can be considered as conservation deposits.

More information

Item ID: 19040
DC Identifier: http://oa.upm.es/19040/
OAI Identifier: oai:oa.upm.es:19040
Deposited by: Memoria Investigacion
Deposited on: 27 Feb 2014 12:01
Last Modified: 21 Apr 2016 17:16
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