Journal of iberian geology: an international publication of earth sciences最新文献

{"title":"Neogene and Quatemary fan-delta deposits in southeastem Spain. Field Guide","authors":"J. Goy, C. Z. Cardeña, T. Bardají, Cristino José Dabrio González, L. Somoza, C. D. S. Bové","doi":"10.5209/REV_CGIB.1991.V15.2631","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1991.V15.2631","url":null,"abstract":"A guided field-trip through tha basins of Fortuna, Carrascoy-Murcia, \u0000Lower Segura and Cope, with detailed sections, interpretation of rock bodies and sedimentary models. \u0000 \u0000[RESUMEN] \u0000Excursion guiada a las cuencas de Fortuna, Carrascoy-Murcia, Bajo \u0000Segura y Cope, con secciones detalladas, interpretacion de los cuerpos \u0000rocosos y modelos sedimentarios.","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124646715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sistemas aluviales pérmicos del área de PeñaLabra-PeñaSagra (Cantabria y Palencia)","authors":"V. Pujalte, S. Robles, J. G. Mondéjar","doi":"10.5209/REV_CGIB.1987.V11.2677","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1987.V11.2677","url":null,"abstract":"En la zona de Pena Labra-Pena Sagra (borde oriental del Macizo Asturiano) se desarro]]o durante el Permico un surco sedimentario subsidente, en el que se acumularon hasta mas de 1.000 m. de depositos aluviales. Estos depositos se han dividido en dos macrosecuencias deposicionales. La inferior esta constituida por abanicos aluviales que se expandian hacia el N-NO y que se nutrian de los relieves volcanicos permicos aflorantes mas al sur (zona de] Pico Tres MaresBranosera). La macrosecuencia superior es expansiva y esta formada por depositos aluviales de sistemas que fluian hacia el NO y que tenian un area fuente mas lejana y de naturaleza fundamentalmente sedimentaria. Con el transcurso del tiempo y hacia las pafles centrales de la cuenca (zona de La Cohilla) se deduce que estos sistemas fueron quedando representados por facies mas distales del complejo aluvial.","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129030154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ecology of siliceous sponges - Application to the environmental interpretation of the Upper Jurassic sponge facies (Oxfodian) from Spain.","authors":"M. Krautter","doi":"10.5209/REV_CGIB.1998.V24.2477","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1998.V24.2477","url":null,"abstract":"the major factors controtling [he morphological and taxonomie composition of siliceous sponge faunas are sedimentation rate and nutrient supply. In seawater bacteria are most abundant in the upper par[ of [he water column. Towards greater depths bacteria disappear gradually. The bathymetric distribution of filter-feeding sponges (demosponges mcl. lithistid demosponges) is consequently linked to the distribution of bacteria, their food. Sponge associa[ions consisting exclusively of hexactinosan sponges clearly demonstrate [he absence of sufficient free bacteria. The tissue organisation of hexactinellids allows [bern to absorb coloidal organic mauer or dissolved amino acids, which represents [heir predorninant feeding strategy. If [bis type of food is scarce, hexactinellid.s tend lo reduce wafl thickness which improves [heir overail contad with sea water. Moreover, morphovariable taxa enlarge their surface by developing thin plate- or dish-shaped forms. Arnong morphostable taxa dish-shaped forms have an adaptional advantage in [hese settings and will outcornpete other forms. Reduced sedimentation rate is a general precondition for [he establishrnent of sponge communities, aLthough sorne sponges can adapt [o a certain degree of sedimentation. Slighdy elevated rates of sedimentation favour tube-shaped sponges, since a narrowed osculum produces a bundied exhalant water current whicb shelters [be animal from [he settlement of sediment particles. Sin 223 Eeologv of siliccoas spon ges - Applnation te the environmental. Manfred Kraatter ce changes in sedimentation are accompanied by changes in tbe influx of nutrients, the sedimentation rate directly or indireetly influences the sponges. Sedimentation therefore represents a prime factor controlling morphological as well as taxonomie dominanee and diversity of siliceous sponge faunas. TEe siliceous sponge fauna of the Yatova Formation of eastem Spain ciearly demonstrates thai the shape of morphovariable sponges as well as the taxonomic composition of rnorphostable sponges mirror external environmental factors. The reduced sediment intiux is inierpreted to bave resulted in a very 10w nutrient level, whieh is reflected by a strong reduction in filter-feeding organisms frequent in other Late Jurassic sponge settings. The sponge fauna itself is characterized by the almost exclusive oceurrence of a uniform, low-diversity but abundant fauna of bexactinosan dish-sbaped sponges, uncommon in most other Late Jurassic sponge faunas. Llihistid demosponges only play a minor role.","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123468601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Día 2: El Pérmico y el Triásico de la región de Molina de Aragón (Cordillera Ibérica).","authors":"J. Doubinger, M. C. Adloff, A. Ramos","doi":"10.5209/REV_CGIB.1977.V4.2921","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1977.V4.2921","url":null,"abstract":"","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123608518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"What taphonomy can and cannot tell us = Qué puede y qué no puede aportarnos la Tafonomía","authors":"P. Andrews","doi":"10.5209/REV_CGIB.1997.V23.2487","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1997.V23.2487","url":null,"abstract":"","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121197303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"El borde de la zona de transición entre las Sierras de Gredos y Guadarrama (Sistema Central Ibérico); evolución morfotectónica reciente.","authors":"J. D. P. Gilsanz","doi":"10.5209/REV_CGIB.1981.V7.2847","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1981.V7.2847","url":null,"abstract":"","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114231497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sandstone-body structure and river process in the Ebro Basin of Aragón, Spain.","authors":"P. F. Friend, J. Hirst, G. Nichols","doi":"10.5209/REV_CGIB.1986.V10.2723","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1986.V10.2723","url":null,"abstract":"The Miocene fluvial sediments of the Aragon part of the Ebro basin, northern Spain, provide remarkable exposuresof sandstone bodies.Three different types of sandstonebodies can be distinguished in terms of the form of their externalmorphology: ribbons, sheetsand amalgamatedcomplexes.Ihe internal structuresof the ribbon sandstonebodiesshow that theyresultedfrom at leastonechannelincision event, followed by the plugging of the channel, sometimesachieved only after a whole seriesof incísion and plugging cycles. In contrast, the sheetsandstonebodies may haveresultedfrom eitherchannelisedor unchannejisedf]ow. Wherechanneiswere involved, they slrnw evidence of migration by lateral bank erosion, either involving a single phase of progressivemigration, or involving complexreworking of íhe earlier phasesof channel deposits.Amalgamationoccurredwhen the erosion that precededribbon or sheetsandstonedepositioncut into an earlier sandstonebody. Whenthis createda complexgeometry,we distinguish a separatetype. Ribbon bodies will tend to result from eptemeral river f]ow or periodic uplift of the alluvial surface.Amalgamationwill tend to result from changesof hydrology, local alluvial uplift or tectonic tilting,","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114529117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Megaflora hallada en el Trías de Facies Germánica del sector central de la Cordillera Bética.","authors":"C. Ramis, A. Pérez-lópez","doi":"10.5209/REV_CGIB.1996.V20.2548","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1996.V20.2548","url":null,"abstract":"En este trabajo se da a conocer y se discute la posicion sistematica y otros aspectos de los dispersos y deteriorados restos de magaflora hallados en facies Keuper de cuatro yacimientos situados en la Zona Subbetica de la Cordillera Betica. Existen restos de plantas autoctonas (Equisetites arenaceus y Squizoneura paradoxa) en las areniscas del Keuper, relacionadas con medios sedimentarios costeros; tambien aparecen restos de cycadophytes, asociado a veces con helechos, posiblemente desarrollados en una llanura esteparia cercana al litoral; y restos de coniferas (Voltzia liebeana y Araucarites fsp) que han sufrido un largo transporte en relacion con un sistema fluvial de caracter efimero. Los paleorestos encontrados aportan datos paleoecologicos de interes que son corroborados por el analisis de las facies sedimentarias.","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124090958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metallogenie triasique au Nord et au Sud des Pyrenees.","authors":"Jacques Thibiéroz","doi":"10.5209/REV_CGIB.1987.V11.2715","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1987.V11.2715","url":null,"abstract":"","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127622641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"La sedimentación en una rampa carbonatada dominada por tempestades, ensayos de correlación de ciclos y eventos de la ritmita margo-calcárea del Jurásico de Asturias","authors":"C. Centi, M. Valenzuela, J. Ramos","doi":"10.5209/REV_CGIB.1989.V13.2654","DOIUrl":"https://doi.org/10.5209/REV_CGIB.1989.V13.2654","url":null,"abstract":"","PeriodicalId":110220,"journal":{"name":"Journal of iberian geology: an international publication of earth sciences","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126296992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}