2024-03-28T18:04:59Zhttps://gredos.usal.es/oai/requestoai:gredos.usal.es:10366/1324682022-02-07T14:46:31Zcom_10366_4128com_10366_4055com_10366_3946com_10366_3823col_10366_4129
3-D modelling of a fossil tufa outcrop. The example of La Peña del Manto (Soria, Spain)
Huerta Hurtado, Pedro
Armenteros Armenteros, Ildefonso
Merino-Tomé, Óscar
Rodríguez-Gonzálvez, Pablo
Silva, Pablo G.
González Aguilera, Diego
Carrasco-García, Pedro
Tufa
Pleistocene
Spain
Non-marine
Fluvial
Cascade
[EN]Classical studies of tufas lack quantitative outcrop descriptions and facies models, and normally do not
integrate data from subsurface in the stratigraphic and evolutive analysis. This paper describes themethodology
followed to construct one of the first digital outcrop models of fossil tufas. This model incorporates
3-D lines and surfaces obtained from a terrestrial laser scanner, electric resistivity tomography
(ERT) profiles, and stratigraphic and sedimentologic data from 18 measured sections. This study has
identified seven sedimentary units (from SU-1 to SU-7) which are composed of tufa carbonates (SU-1;
3; 5; 6) and clastics (SU-2; 4; 7). Facies identified occur in different proportions: phytoherm limestones
of bryophytes represent 43% of tufa volume, bioclastic limestones 20%, phytoherm limestones of stems
12%, oncolitic limestones 8%, and clastics 15%. Three main architectural elements have been identified:
1) Steeply dipping strata dominated by phytoherm limestones of bryophytes; 2) gently dipping strata
dominated by phytoherm limestones of stems; and 3) horizontal strata dominated by bioclastic and
oncoid limestones. The alternation of tufa growth and clastic input stages is interpreted as the result of
climatic changes during Mid–Late Pleistocene.
2017-02-08T09:18:05Z
2017-02-08T09:18:05Z
2017-02-08T09:18:05Z
2016-01-01
info:eu-repo/semantics/article
http://hdl.handle.net/10366/132468
http://dx.doi.org/10.1016/j.sedgeo.2015.12.013
eng
CGL2014-54818-P
18.KA4A-463 A.C.01
https://creativecommons.org/licenses/by-nc-nd/3.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivs 3.0 Unported