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A Probabilistic Approach for Identifying Independent Remote Compressions in an Intraplate Region: The Iberian Chain (Spain)

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Abstract

The discrimination between distinct remote compressions and multiple local stress deviations within a single compressive stress field has been carried out in the central-eastern Iberian Chain, by using structural criteria, computing palaeostress directions, identifying and ‘filtering’ stress deviations, and analysing time relationships. A probabilistic analysis based on a systematic comparison of real and expected frequencies of coexistence of two compressions is applied by means of the χ 2 Test. This allows us to identify those tectonic compressions that behave as independent events from the probabilistic point of view. The results suggest that among five initially defined compression directions only three can be considered as representative of distinct (although partially superposed) externally applied intraplate stress fields: Iberian s.l. (NE-SW), Betic s.l. (NW-SE), and Pyrenean (N-S to NNE-SSW).

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Authors and Affiliations

  1. Departamento de Geología, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain

    Carlos L. Liesa & José L. Simón

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  1. Carlos L. Liesa
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  2. José L. Simón
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Correspondence to Carlos L. Liesa.

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Liesa, C.L., Simón, J.L. A Probabilistic Approach for Identifying Independent Remote Compressions in an Intraplate Region: The Iberian Chain (Spain). Math Geol 39, 337–348 (2007). https://doi.org/10.1007/s11004-007-9084-x

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  • DOI: https://doi.org/10.1007/s11004-007-9084-x

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