Person: Santisteban Navarro, Juan Ignacio
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First Name
Juan Ignacio
Last Name
Santisteban Navarro
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Geológicas
Department
Geodinámica, Estratigrafía y Paleontología
Area
Estratigrafía
Identifiers
10 results
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Item Los factores determinantes en la secuencia edáfica de la evolución morfodinámica del tramo medio del río Guadalquivir (Jaén)(Revista de la Sociedad Geológica de España, 1998) Carral González, M. P.; Martín Serrano, Ángel; Santisteban Navarro, Juan Ignacio; Guerra, A.; Jiménez Ballesta, R.El sistema de terrazas del río Guadalquivir, en su primera aproximación al borde de la Meseta, ocupa un segmento de planta rectangular alargada según una de sus principales directrices estructurales. Se identifican tres grupos principales de niveles encajados a ambos lados del actual cauce. La agrupación más moderna se ubica en el centro del valle. Las terrazas septentrionales están constituidas por cuatro escalones fundamentales. La asociación meridional esta formada por los replanos mas altos y peor conservados cuyo nivel superior esta situado a 130 m sobre el cauce. En ningún caso existen referencias cronológicas fiables. La secuencia edáfica desarrollada sobre estas terrazas se ha determinado mediante el estudio de 10 perfiles de suelos, que muestran una evolución progresiva en su desarrollo por la distinta naturaleza de los procesos edáficos. Los fenómenos de descarbonatación-carbonatación secundaria, argilización y rubefacción son función de su posición topográfica y están relacionados con la evolución morfodinámica del valle. Su comparación con las secuencias de otros ríos del entorno mediterraneo ibérico indica una fuerte dependencia del área fuente y del tiempo.Item Alpine tectonic framework of south-western Duero basin(Tertiary basins of Spain : the stratigraphic record of crustal kinematics / edited by Peter F. Friend and Cristino J. Dabrio, 1996) Santisteban Navarro, Juan Ignacio; Mediavilla López, Rosa María; Martín Serrano, Ángel; Friend, Peter F.; Dabrio, Cristino J.The tectonic activity in the south-western area of the Spanish Northern Meseta (Ciudad Rodrigo and Duero basins) during most of the Tertiary was determined by u transpressive regime that reactivated Hercynian to Late-Hercynian faults. The record of the Alpine Orogeny is complex because the sedimentary record indicates a compresive regime in the sour e areas coeval with the extensionall to transpresive regime indicated by normal or strike-slip faults. This duality is due 10 the geotectonics position of this area between two compressive areas, the Cantabrian Range and the Central System, and the extensional Atlantic margin.Item Introducción a la estratigrafía del Terciario del SO de la Cuenca del Duero(Alteraciones y paleoalteraciones en la morfología del oeste peninsular : (Zócalo Hercínico y Cuencas Terciarias) : curso monográfico Salamanca, 25-27 junio 1991, 1991) Santisteban Navarro, Juan Ignacio; Martín Serrano, Ángel; Mediavilla López, Rosa María; Molina, Eloy; Blanco, José Antonio; Molina, Eloy; Martín Serrano, ÁngelItem North-western Cainozoic record: present knowledge and the correlation problem(Tertiary basins of Spain : the stratigraphic record of crustal kinematics, 1996) Martín Serrano, Ángel; Mediavilla López, Rosa María; Santisteban Navarro, Juan Ignacio; Friend, Peter F.; Dabrio, Cristino J.Tertiary deposits of the north-western Iberian Peninsula are heterogeneous because they occur in several morpho-structural positions as isolated and dispersed basins and outerops. The quality of the palaeontological record is usually very poor and there are scarce data. Correlation depends on a wide range of criteria which arc not always equivalent: palaeontology, mineralogy and petrology, geomorphology, tectonics and comparison with better-known and better-dated facies in regions nearby. The results lack homogeneity and there arc notable discrepancie.Item Tertiary of Central System basins(Tertiary basins of Spain : the stratigraphic record of crustal kinematics, 1996) Martín Serrano, Ángel; Santisteban Navarro, Juan Ignacio; Friend, Peter F.; Dabrio, Cristino J.The rise of the Central System due to reactivation of late Hercynian fault systems during the Alpine Orogeny directly affected the strcture and stratigraphic framework of the basins nearby that were being filled al the same time. The sedimentary record is the essential key to understanding the tectonic and palaeo-morphological history, of the Central Range, and vice-versa. Relating the filling of the basins with the definition of the mountain range, pre-arkosic, arkosic and post-arkosic stages have been proposed. However, it is difficult to support the previous idea that the arkosic stage continued throughout the Late Tertiary to finish in Middle Pliocene.: times withe the deposition of the Paramos(limestone). The arkoscs of the Central System arc of Eocene-Oligocce age and the highest alluvial fan deposits may be of Aragonian age. There is only a poor record of the remaining Tertiary and Quaternary sediments. boeause of active river incision during this lime in the hasins, the ranges and elsewhere in the Spanish Meseta.Item El Paleógeno del sector suroccidental de la Cuenca del Duero: nueva división estratigráfica y controles sobre su sedimentación.(Acta geologica hispanica, 1991) Santisteban Navarro, Juan Ignacio; Mediavilla López, Rosa María; Martín Serrano, ÁngelComo resultado de un detallado trabajo cartográfico, estratigráfico y sedimentológico, se propone la división del Paleógeno del sector suroccidental de la Cuenca del Duero en cuatro U.T.S. limitadas por discordancias. Estas D.T.S., que abarcan desde el tránsito Cretácico superior-Paleoceno hasta el Oligoceno, incluyen distintas unidades litoestratigráficas que sonreordenadas, modificando la sucesión estratigrática propuesta por los autores anteriores. Se asigna a la U.T.S. Me una edad Cretácico superior-Paleoceno. Se individualiza el Eoceno inferior (U.T.S. PI) en la zona de Salamanca. Se reinterpreta la relación existente entre los materiales del Eoceno mediosuperior y los del Eoceno superior-Oligoceno considerándolos en tránsito por lo que se asignan a una única U.T.S. (UT.S. P2, Eoceno medio Oligoceno inferior). Se incluyen en la U.T.S. P3 (Oligoceno superior) los sedimentos arcósicos anterionnente considerados como Vatlesienses. Así mismo, se considera que gran parte de los materiales asignados al mioceno inferior son sedimentos paleógenos afectados por un proceso de alteración de edad Miocena, lo que implica una variación en la extensión y límites de la cuenca neógena en su extremo SO. Se analiza la evolución de las distintas U.T.S. deduciendo un carácter tectónico para las megasecuencias propuestas relacionado con el progresivo levantamiento de las áreas fuente. El clima muestra un tránsito desde condiciones tropicales sin estaciones contrastadas (U,T.S. MC) hasta un clima mediterráneo árido (U.T.S. P3) con una estación seca muy marcada y una corta estación húmeda caracterizada por violentas avenidas. [ABSTRACT] A Paleogene four-fold stratigraphical division is proposed here as result fram the detailed studies carried out during the elaboration of 22 sheets of the Geological Map of Spain (E. 1 :50.000). This units (T.S.U.) are limited by regional discordances and they have a Upper Cretaceous to Oligocene ages. The previous stratigraphical schemes are rearranged due to the different stratigraphical relations observed between the lithostratigraphical units proposed by other workers (Jiménez, 1970; Corrochano, 1977; Alonso, 1981...). An Upper Cretaceous-Paleocene age is assumed to T.S.U. MC which is mainly composed by siliciclastic sediments strongly silicified forming a FU megasequence. It is intcrpretated as braided streams that flowed downslope filling paleovalleys erodcd onto Paleozoic materiaIs. Mineralogical features point to a tropical climate. Lower Eocene (T.S.U. P I ) is identified in the Salamanca area, where ir was considered as lacking. It is composed by arkosic sediments forming a CU megasequence. Fossil faunas of this T.S.U. record a subtropical clima te. It is observed a transition from high sinuosity streams to braided ones. T.S.U. P2 (Middle Eocene-Lower Oligocene) is composed of two lithostratigraphical units previously considered as bounded by a discordance (Alonso, 1981).It has a subarkosic to lithic nature and forms a CU megasequence. This unit records a subtropical climate with short arid periods and is interpretated as braided streams showing an increasing stability and enviromental energy to the topo T.S. U. P3 (Upper Oligocene) is composed by arkosic sediments previously considered of Vallesian (Middle to Upper Miocene) age. They form a CU megasequence that records braided streams prograding basinwardfrom higher arcas. Palinological associations and pedological features indicate an arid mediterranean climate with long arid periods and a short rainy season with strong floods. We consider that most of Lower Miocene sediments are of Paleogene age. They are afected by a widespread alteration profile developed along Lower Miocene that masked its more significative features. Sedimentological analysis of T.S.U. shows that its megasequentiality is related to the rates of tectonical uplift of source arcas whereas a distensive regime developed in the sedimentation basin.Item Cenozoic lacustrine deposits in the Duero Basin (Spain)(Global geological record of lake basins, 1994) Mediavilla López, Rosa María; Martín Serrano, Ángel; Dabrio González, Cristino José; Santisteban Navarro, Juan Ignacio; Gierlowski-Kordesch , E.; Kelts, K.Item South-western Duero and Ciudad Rodrigo basins: infill and dissection of a Tertiary basin(Tertiary basins of Spain : the stratigraphic record of crustal kinematics, 1996) Santisteban Navarro, Juan Ignacio; Martín Serrano, Ángel; Mediavilla López, Rosa María; Dabrio González, Cristino José; Friend, Peter F.; Dabrio, Cristino J.In the soult western sector of the intracontinetal Duero basin, the post-Hercynian sedimentary record consist of Upper Cretaceous to Quaternary terrestrial sediments. Climates shifted from tropical, with poorly defined seansos (end of Cretaceous), to Mediterranean (Neogene). Tertiary deposits are divided into three tectonographic completes. The Late Cretaceous-Paleocene, related to the end of the Mesozoic cycle, is caractericed by a well developed weathering profile that eroded later. The Eocene Oligocene, formed during the morpho-structural definition of the actual basin boundaries, consists of three unconformity-bounded units related to successive tectonic events of the Alpine Orogeny by the cnd of this cycle, progressive incision of the Atlantic nuvial network led to capture of the fluvial systems of the southern Duero basin and degradation (emptying) began. The Miocene-Phocene, related to and extensional tectonic regime represents the spreading of exorheik conditions to the whole basin that marked a complete hydrugraphic reorganisation. Deposition and aggradation continued in more central areas of the basin until the end of the Neogene, coeval with degradation of the south-western corner of the Duero Basin. The coexistence resulted from differential subsidence, hinge lines (uplift zones) separated sub-basins, and the dynamics of capture processes.Item The Duero Basin: a general overview(Tertiary basins of Spain : the stratigraphic record of crustal kinematics / edited by Peter F. Friend and Cristino J. Dabrio, 1996) Santisteban Navarro, Juan Ignacio; Mediavilla López, Rosa María; Martín Serrano, Ángel; Dabrio González, Cristino José; Freend, Peter F.; Dabrio, Cristino J.The Duero basin occupies a large area in the north-west of the Iberian Península. It has ao approximately quadrangular shape, and three of its four corners are the sites of distinctive sub-basins that extend outwards from the main basic. The different margins of lhe sub-basins and the main basic tend to have distinctive histories of tectonic and sedimentary evolution.Item Lacustrine Neogene systems of the Duero Basin: evolution and controls(Tertiary basins of Spain : the stratigraphic record of crustal kinematics, 1996) Mediavilla López, Rosa María; Dabrio González, Cristino José; Martín Serrano, Ángel; Santisteban Navarro, Juan Ignacio; Friend, Peter F.; Dabrio, Cristino J.Vertical aggradation of Neogene fluvial and lacustrine deposits occurred until the Late Neogene in central and northem areas of the Duero Basin, coeval with river incision in the southwestern corner of the basin. The whole basin became exorheic in the Latest Neogene. We have differentiated five tectonosedimentary units (TSUs) of basinal extent, bounded by unconfonnities or breaks in the sedimentary record. Deposits in each TSU consist of alluvial-fan deposits in areas close to the active northern and eastern margins, and fluvial deposits along the western margin. These systems converged in the lower, subsiding areas of the basin occupied by carbonate-evaporite lacustrine systems. Tectonics and climate controlled sedimentation. The main faults active from the Neogene to the Present reflect Late Hercynian basement fractures that were re-activated during the Alpine Orogeny, both fracturing blocks and modifying landscapes, and creating or modifying the areas of subsidence. Analysis of climatic variations during the Miocene shows that deposition of saline materials occurred in dry TSUs (1, 2) and, particularly, in humid TSUs (3,4). Climate does not seem to have been a determining factor for the formation of evaporites. However, it was a very important factor in determining both the amount of water that reached the basin and, eventually, also the extent of the lacustrine systems.