Person:
Martín Chivelet, Javier

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First Name
Javier
Last Name
Martín Chivelet
URI
https://hdl.handle.net/20.500.14352/75277
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Geológicas
Department
Geodinámica, Estratigrafía y Paleontología
Area
Estratigrafía
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UCM identifierORCIDScopus Author IDWeb of Science ResearcherIDDialnet IDGoogle Scholar ID

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2007 - 200922010 - 20163
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Item Type: Publication × Subject: 550.4 ×

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Now showing 1 - 5 of 5
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    Trace Elements in Speleothems as Indicators of Past Climate and Karst Hydrochemistry: A Case Study from Kaite Cave (N Spain
    (Hydrogeological and Environmental Investigations in Karst Systems, 2014) Cruz, Juncal.A.; Martín Chivelet, Javier; Marín Roldán, A.; Turrero, M.J.; Edwards, R.L; Ortega Martínez, Ana Isabel; Cáceres, J.O.
    A stalagmite that grew during the Holocene (between 4.9 and 0.9 ka BP) in Kaite Cave (Ojo Guareña Karst Complex, Burgos, N Spain) has been analyzed by Laser-Induced Breakdown Spectroscopy (LIBS) with the aim of reconstructing secular variations in the hydrochemistry of the karst system, in turn related to changes in the environment outside the cave. LIBS analyses yield significant changes in Mg/Ca and Sr/Ca intensity ratios through the stalagmite, which reveal consistent trends and patterns at decadal to centennial scales. The origin of the observed changes in Mg/Ca and Sr/Ca ratios is discussed in the framework of the cave system and the regional climatic variability, particularly the changes in precipitation.
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    Caracterización y evolución de los fluidos diagenéticos que afectaron a los carbonatos del Aptiense superior del noroeste de la cuenca Vasco-Cantábrica (Fm. Reocín)
    (Geotemas, 2016) López-Cilla, I.; Rosales, Idoia; Gasparrini, Marta; Martín Chivelet, Javier
    El estudio combinado de microtermometría de inclusiones fluidas, geoquímica isotópica y petrología de las múltiples fases de dolomitización y cementación de calcita y dolomita que afectan a la Formación Reocín (Aptiense superior, noroeste de la cuenca Vasco-Cantábrica), ha permitido reconstruir la evolución de los fluidos durante la diagénesis de enterramiento y posterior exhumación orogénica de la cuenca. Durante la diagénesis temprana tuvo lugar la primera fase de dolomita (D1) y de cementos de calcita (C1, C2), a partir de fluidos meteóricos evolucionados o mezcla de fluidos. El segundo evento importante de flujo de fluidos durante el enterramiento dio lugar a la formación de dolomía de reemplazamiento (D2) y de recristalización (D3) y a cementos saddle de dolomita (D4, D5), que muestran un amplio rango de salinidades y temperaturas de nucleación relativamente bajas, lo que sugiere la interacción de fluidos que varían entre aguas marinas evolucionadas hasta salmueras altamente evaporadas. Este evento estuvo relacionado con la precipitación de sulfuros (mineralizaciones de Zn-Pb). El tercer evento de fluidos causó la precipitación de calcita (C3) que muestra muy bajas salinidades y las temperaturas de entrampamiento más altas, lo que sugiere precipitación a partir de la circulación de un fluido meteórico calentado en profundidad. La última fase diagenética está relacionada con un fluido frío, no-salino y oxidante, que causó la precipitación de calcita (C4), recristalización de la dolomita a calcita (dedolomita) y oxi-hidróxidos de Fe.
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    Geochemical evolution of drip-water and present-growing calcite at Kaite cave (N Spain)
    (2007) Turrero Jiménez, María Jesús; Garralón Lafuente, Antonio; Gómez González, Paloma; Sánchez Moreno, Lorenzo; Martín Chivelet, Javier; Ortega Martínez, Ana Isabel; Bullen, Thomas D.; Wang, Yanxin
    A range of parameters is analyzed from drip-waters and present-growing calcites at Kaite cave (Ojo Guareña complex, Burgos, N Spain) from mid-2002. The objective is establishing the linkage between the geochemical processes occurring in the drip-water/calcite system and the changes external to the cave. The selected site is Las Velas Hall, characterized by a stable cave climate and absence of significant air currents. Two seepage points (with “low” and “fast” drip-water rate) were chosen for the study, both with calcite growing at present time. The low drip-water point does not have a direct response to rainfall, as opposite to the fast drip-water point which respond rapidly to external precipitation. Intra- and inter- annual variations in the chemical and isotopic components are observed.
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    Modeling delta δ-18 in drip waters and recent speleothems: Implications for paleoclimate records in N Spain
    (Geochimica et cosmochimica acta, 2009) Martín Chivelet, Javier; Turrero Jiménez, María Jesús; Garralón, Antonio; Gómez González, Paloma; Muñoz García, María Belén; Sánchez Moreno, Lorenzo; Santisteban Navarro, Juan Ignacio
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    Determination of sea surface temperatures using oxygen isotope ratios from Phorcus lineatus (Da Costa, 1778) in northern Spain : Implications for paleoclimate and archaeological studies
    (The Holocene, 2015) Gutiérrez-Zugasti, Igor; García-Escárzaga, Asier; Martín Chivelet, Javier; González-Morales, Manuel R.
    Changes in oxygen isotope ratios from shell carbonates are mainly dependent on sea surface temperature, which enables the estimation of temperatures during periods of shell growth and helps to determine the season of the year when the mollusk died. The marine topshell Phorcus lineatus (Da Costa, 1778) is commonly found in Holocene archaeological deposits of Atlantic Europe and is one of the most abundant subsistence resources utilized during the Mesolithic in northern Spain. Before applying isotopic techniques to ancient samples, calibration of the past isotopic data and its variability must be performed through the study of modern specimens to test their potential as paleoclimate proxy and their suitability for determining the collection season. Although previous studies performed in the region highlighted the existing relationship between sea surface temperatures and isotopic signatures, no systematic works have been done so far. In this paper, calibration of modern P. lineatus shells from northern Spain was carried out using δ18O analysis. The results showed (1) the existence of a robust inverse correlation between instrumental temperatures (T meas) and δ18Oshell (R 2 > 0.9), accompanied by the lack of significant dependence from δ18Owater variations (R 2 = 0.06); (2) the existence of conditions of (or close to) isotopic equilibrium during the formation of the aragonite in the P. lineatus shells; and (3) that using mean annual δ18Owater values, past temperatures could be calculated with a maximum uncertainty of ±3°C. Moreover, results suggested that P. lineatus generally grew without substantial slow/cessation throughout the year, reflecting the four annual seasons. Therefore, our study not only confirms the potential of oxygen isotope analysis on P. lineatus for paleoclimate reconstruction and archaeological studies highlighted in previous studies but also shows for the first time that the aragonite of those shells grew under conditions of isotopic equilibrium, opening new avenues for future research.