Taphonomy and palaeoenvironmental interpretation of a new amber-bearing outcrop from the mid-Cretaceous of the Maestrazgo Basin (E Iberian Peninsula)

  1. Álvarez-Parra, Sergio 1
  2. Bueno-Cebollada, Carlos A. 2
  3. Barrón, Eduardo 2
  4. Pérez-Cano, Jordi 3
  5. Paredes-Aliaga, María Victoria 1
  6. Rubio, Cristóbal 4
  7. Rodrigo, Ana 2
  8. Meléndez, Nieves 5
  9. Delclòs, Xavier 6
  10. Peñalver, Enrique 2
  1. 1 Universitat de València
    info

    Universitat de València

    Valencia, España

    ROR https://ror.org/043nxc105

  2. 2 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

  3. 3 Institut Català de Paleontologia Miquel Crusafont
  4. 4 PALEOYMAS
  5. 5 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

  6. 6 Universitat de Barcelona
    info

    Universitat de Barcelona

    Barcelona, España

    ROR https://ror.org/021018s57

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Revista:
Spanish journal of palaeontology

ISSN: 2255-0550

Año de publicación: 2024

Título del ejemplar: SPANISH JOURNAL OF PALAEONTOLOGY

Volumen: 39

Número: 1

Páginas: 32-69

Tipo: Artículo

DOI: 10.7203/SJP.28426 DIALNET GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Spanish journal of palaeontology

Resumen

Cretaceous amber-bearing outcrops are numerous and mainly distributed along the Northern Hemisphere. They have been related to extensive resin mass production occurring from the Barremian to the Campanian presumably due to interrelated abiotic and biotic factors. Amber outcrops are also abundant in the Iberian Peninsula, and they are mostly dated as Albian. Here, we present a new amber-bearing outcrop from the Cretaceous of the Maestrazgo Basin called La Dehesa (Estercuel, Aragón, Spain). This locality is assigned to the Boundary Marls Unit and is known for its rich and diverse palaeobotanical record. The dating of the amber-bearing bed is late Albian–early Cenomanian, based on palynomorphs and ostracods. Amber characteristics are compatible with a medium to long-distance transport before resin deposition, i.e., allochthonous origin. Organism-resin interactions have been identified, such as hyphae of resinicolous fungus in the cortex of the amber, a pholadid boring determined as Teredolites clavatus, and an oyster shell that grew on the solidified resin surface. No bioinclusions have been found so far. The study of the microfossils, some of them containing pyrite aggregates or crystals, found in the amber-bearing bed (palynomorphs, plant remains, foraminifers, echinoid spines, ostracods, and vertebrate remains) points to a coastal to inner mixed platform environment.

Fuente de los datos: Dialnet