Palustrine sedimentation on a Pliocene-Pleistocene distal floodplain (Guadix Basin, Betic Cordillera, S. Spain). / Pla Pueyo, Sila; Yébenes, Alfonso; Soria, Jesús M.; Viseras, César; Arribas, Alfonso.
2007. 140 Abstract from 25th IAS Meeting of Sedimentology, Patras, Greece.Research output: Contribution to conference › Abstract
Palustrine sedimentation on a Pliocene-Pleistocene distal floodplain (Guadix Basin, Betic Cordillera, S. Spain). / Pla Pueyo, Sila; Yébenes, Alfonso; Soria, Jesús M.; Viseras, César; Arribas, Alfonso.
2007. 140 Abstract from 25th IAS Meeting of Sedimentology, Patras, Greece.Research output: Contribution to conference › Abstract
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TY - CONF
T1 - Palustrine sedimentation on a Pliocene-Pleistocene distal floodplain (Guadix Basin, Betic Cordillera, S. Spain)
AU - Pla Pueyo, Sila
AU - Yébenes, Alfonso
AU - Soria, Jesús M.
AU - Viseras, César
AU - Arribas, Alfonso
N1 - Complete reference: Pla-Pueyo, S., Yébenes, A., Soria, J.M., Viseras and Arribas, A. 2007. Palustrine sedimentation on a Pliocene-Pleistocene distal floodplain (Guadix Basin, Betic Cordillera, S. Spain). 25th IAS Meeting of Sedimentology, Patras, Greece. Book of Abstracts, 140.
PY - 2007
Y1 - 2007
N2 - The Guadix Basin is located on the ancient contact between the two main structural realms of the Betic Cordillera (S. Spain): the Internal Zone (or Alboran Block) and the External Zone (corresponding to the folded and faulted South Iberian paleomargin). During the continental stage of infilling (Late Tortonian-Late Pleistocene) the basin was an endorheic depression, with a large shallow lake, acting as local base level in the eastern sector, and three well developed main alluvial systems (one axial and two transverse) in the western part. The interplay between subsidence and sediment supply from the transverse alluvial fans gave way temporarily to the blocking of the master drainage towards the east resulting in shallow ephemeral lakes occupying the axial valley. Next to the connection with the ephemeral lakes, the floodplain deposits of the Axial valley, formed by detritical and carbonate sediments, host a number of important macromammal fossil sites characterizing the transition between the Pliocene and the Pleistocene and evidencing an important faunistical dispersion. We advance here the results of the characterization of those carbonate sediments, showing that most of them were deposited in palustrine environments. Several facies have been established according to their exposure index, as inferred by the degree of pedological modifications affecting the original sediments, and by its content in detrital components. Some other carbonate bodies, that are exposed also in the studied area, have been interpreted as tufas and as calcretes.
AB - The Guadix Basin is located on the ancient contact between the two main structural realms of the Betic Cordillera (S. Spain): the Internal Zone (or Alboran Block) and the External Zone (corresponding to the folded and faulted South Iberian paleomargin). During the continental stage of infilling (Late Tortonian-Late Pleistocene) the basin was an endorheic depression, with a large shallow lake, acting as local base level in the eastern sector, and three well developed main alluvial systems (one axial and two transverse) in the western part. The interplay between subsidence and sediment supply from the transverse alluvial fans gave way temporarily to the blocking of the master drainage towards the east resulting in shallow ephemeral lakes occupying the axial valley. Next to the connection with the ephemeral lakes, the floodplain deposits of the Axial valley, formed by detritical and carbonate sediments, host a number of important macromammal fossil sites characterizing the transition between the Pliocene and the Pleistocene and evidencing an important faunistical dispersion. We advance here the results of the characterization of those carbonate sediments, showing that most of them were deposited in palustrine environments. Several facies have been established according to their exposure index, as inferred by the degree of pedological modifications affecting the original sediments, and by its content in detrital components. Some other carbonate bodies, that are exposed also in the studied area, have been interpreted as tufas and as calcretes.
KW - Palustrine
KW - Continental carbonates
KW - Guadix Basin
KW - Quaternary
KW - Pliocene
KW - Pleistocene
M3 - Abstract
SP - 140
T2 - 25th IAS Meeting of Sedimentology
Y2 - 4 September 2007 through 7 September 2007
ER -