Calcrete and palustrine assemblages on a distal alluvial-floodplain: A response to local subsidence (Miocene of the Duero basin, Spain)

Huerta, Pedro; Armenteros, Ildefonso Armenteros

doi:10.1016/j.sedgeo.2005.03.007

Cited by 69 publications

(49 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the grain size distribution is determined by the location of the main sediment source areas, the Qinling Mountains to the south and the Huanjialing Mountains to the north, with carbonate deposition occurring in inner areas. This trend is consistent with that commonly observed in continental basins such as the Eocene Guarga Formation of the Pyrenees (Nickel, 1982) and the Miocene of the Duero (Huerta and Armenteros, 2005; Armen teros and Huerta, 2006) or Madrid Basin (Alonso-Zarza et al, 1992). 4) Land snails thrived during the dry (dominant) periods within the mud flats, which are also subaerial environments where the calcretes formed.…”

Section: ) Correlative Stratigraphy Does Not Inform Of the Depositiosupporting

confidence: 90%

Reply to the comment on “Mudflat/distal fan and shallow lake sedimentation (upper Vallesian–Turolian) in the Tianshui Basin, Central China: Evidence against the late Miocene eolian loess” by A.M. Alonso-Zarza, Z. Zhao, C.H. Song, J.J. Li, J. Zhang, A. Martín-Pérez, R. Martín-García, X.X. Wang, Y. Zhang and M.H. Zhang [Sedimentary Geology 222 (2009) 42–51]

Alonso-Zarza

Zhao

Song

et al. 2010

Sedimentary Geology

View full text Add to dashboard Cite

Section: ) Correlative Stratigraphy Does Not Inform Of the Depositiosupporting

confidence: 90%

Reply to the comment on “Mudflat/distal fan and shallow lake sedimentation (upper Vallesian–Turolian) in the Tianshui Basin, Central China: Evidence against the late Miocene eolian loess” by A.M. Alonso-Zarza, Z. Zhao, C.H. Song, J.J. Li, J. Zhang, A. Martín-Pérez, R. Martín-García, X.X. Wang, Y. Zhang and M.H. Zhang [Sedimentary Geology 222 (2009) 42–51]

Alonso-Zarza

Zhao

Song

et al. 2010

Sedimentary Geology

View full text Add to dashboard Cite

“…The deposits are interpreted as a low gradient lake margin that exposed/inundated large areas with slight changes in water level. Similar examples have been described in the Cenozoic deposits of the Duero and Tajo basins (Alonso-Zarza, 2003;Alonso-Zarza et al, 1992;Huerta and Armenteros, 2005;Huerta et al, 2011).…”

Section: Geographical and Geological Settingsupporting

confidence: 75%

“…In these shallow lakes, slight changes in water level associated with seasonal oscillations resulted in exposure or flooding of wide areas. During the dry season the lake water would fall to lower levels, exposing wide plains of carbonate mud affected by typical palustrine weathering (Platt, 1989;Alonso-Zarza, 2003;Huerta and Armenteros, 2005). Substrate conditions allowed the impression and preservation of tracks on these lake margins.…”

Section: Trackway Ls7cmentioning

confidence: 99%

Unusual sauropod tracks in the Jurassic-Cretaceous transition. Cameros Basin (Burgos, Spain)

Fernández-Baldor¹,

Díaz-Martínez

Contreras³

et al. 2015

Journal of Iberian Geology

View full text Add to dashboard Cite

The Las Sereas site includes at least 14 ichnological outcrops along 5.6 km, in the Lara area, southwest Burgos Province. 67 ichnites of dinosaurs are documented at Las Sereas 7, identified as theropod and sauropod trackways occurring in shallow carbonates of lacustrine environment. Sauropod trackways have intermediate-gauge and low heteropody, and show different anatomical features to other tracks found in the ichnological record, especially in the disposition and orientation of pes digits. They are similar to Polyonyx from the Middle Jurassic of Portugal. However, since they do not preserve reliable manus data they are classified as aff. Polyonyx. The three sauropod trackways are related to the same kind of trackmaker. They differ from each other only in size, and gregarious behavior has not been detected. Analysis of these trackways reveals changes in travel direction even when there are few tracks in each sequence. At the Las Sereas 7 tracksite, the pace length (PL), width of the angulation pattern (WAP) and the WAP/PL ratio and depth analysis via photogrammetry show a direction change in two sauropod trackways. This tracksite and that at La Pedraja are unique in the Tithonian-Berriasian interval of the Iberian Peninsula that occur in a lacustrine environment, and could be indicate of the relationship between the diversity of Iberian, Tithonian-Berriasian sauropod tracks and sedimentary environments.Keywords: Dinosaurs, Sauropod tracks, Tithonian, Berriasian, Cameros Basin, Iberia Resumen El yacimiento de Las Sereas se compone de al menos 14 afloramientos icníticos que se localizan a lo largo de 5,6 Km de longitud en la comarca de Lara, en el sureste de la provincia de Burgos. En el afloramiento de Las Sereas 7 se han documentado 67 icnitas de dinosaurios, identificadas como terópodas y saurópodas, producidas en un ambiente lacustre carbonatado somero. Las rastros saurópodos son de anchura intermedia y heteropodia baja mostrando caracteres anatómicos diferentes a los encontrados en el registro icnológico conocido, en especial en lo referente a la disposición y orientación de los dedos del pie. La mayor semejanza de estas icnitas saurópodas se establece con Polyonyx del Jurásico Medio de Portugal, pero al carecer de datos fiables sobre la anatomía de las manos en Las Sereas, clasificamos estas icnitas de Burgos como aff. Polyonyx. Los tres rastros saurópodos de Burgos se atribuyen a un mismo icnopoyeta, diferenciándose entre sí sólo por el tamaño, y sin que se haya detectado un comportamiento gregario. En el estudio de estos rastros pueden recogerse datos que informen sobre trayectos con cambio de dirección, incluso cuando lo que se conserva es una serie relativamente corta de pasos. En Las Sereas 7 la combinación de los valores de varios parámetros -longitud de paso (PL), pauta de anchura de angulación (WAP) y relación WAP/PL -y el estudio de la profundidad de las icnitas por fotogrametría permiten interpretar un cambio de dirección en dos de los rastros saurópodos. Este yacimiento y el de La Pedraja...

show abstract

“…The calcrete is grey, or greenish, 10-50 cm thick, and shows rhizo-molds, nodular or massive structure, often delineates abrupt boundary with the overlying mudstone, but gradual transition to the underlying beds. They were deposited under strong evaporation at distal floodplain to palustrine environment, where topography gradient is low, the clastic supply is limited, and groundwater is high [6,31,32] .…”

Section: Floodplain Depositsmentioning

confidence: 99%

Miocene Bahean stratigraphy in the Longzhong Basin, northern central China and its implications in environmental change

Zhang

Song

et al. 2006

SCI CHINA SER D

View full text Add to dashboard Cite

Fossil mammal-riched Neogene strata are widely distributed in the southeast corner of the huge Longzhong Basin at Tianshui, Gansu Province, northern central China. Hipparion weihoense, a typical member of late Middle Miocene Bahean stage, was recently excavated at Yaodian along a well-exposed outcrop. Owing to the importance of the Bahean stage in the mammalian evolution and its potential for environmental change, we suggested a name of Yaodian Formation for the stratigraphy, which is correlated to the Bahe Formation at Lantian, Shaanxi. High resolution paleomagnetic dating of the section shows that the Yaodian Formation covers the period between 11.67 Ma and 7.43 Ma, with the site bearing Hipparion weihoense being estimated at about 10.54-10.30 Ma, providing first magnetostratigraphic chronology for the Bahean Stage. The Yaodian Formation consists of fluvial channel deposits (11.67-10.40 Ma) at the bottom, floodplain deposits in the middle (10.40-9.23 Ma) and shallow lake sediments at the top (9.23-7.43 Ma). This upward fining sequence suggests that the relief in nearby mountain ranges such as West Qinling to the south and Huajia Ling to the north was greatly reduced after long-term denudation, fluvial transport capacity was low, and finally the drainage system was disintegrated, replaced with broad-shallow lakes in which only fine sediments like mud and marlite were deposited, indicating an old stage of development of a planation surface. A remarkable shift in ecology and climatic environment was found at 7.4-7.7 Ma when paleoclimate changed from early warm humid to late dry as indicated by sedimentary facies changed from early shallow lake sequence to late eolian red clays and a former coniferous-deciduous mixed forest was replaced by grassland, leading to great growth of Hipparion Fauna of Baodean stage in the region. Therefore, it is estimated that the present high relief of Qinling and drainage pattern did not come into being until Late Pliocene in response to intensive neotectonism and climate change.

show abstract

Calcrete and palustrine assemblages on a distal alluvial-floodplain: A response to local subsidence (Miocene of the Duero basin, Spain)

Cited by 69 publications

References 24 publications

Unusual sauropod tracks in the Jurassic-Cretaceous transition. Cameros Basin (Burgos, Spain)

Miocene Bahean stratigraphy in the Longzhong Basin, northern central China and its implications in environmental change

Contact Info

Product

Resources

About