Journal
JOURNAL OF MAPS
Volume 17, Issue 2, Pages 891-900Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17445647.2021.2001386
Keywords
Bouguer anomalies; residual anomalies; Central Pyrenees; igneous rocks
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Funding
- MCIN/AEI [CGL2017-84901-C22-P, PID2020-114273GB-C22]
- ERDF A way of making Europe
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This work presents new Bouguer and residual Bouguer anomaly maps of the Central Pyrenees, based on data from 3590 stations, including 1141 new observations acquired between 2018 and 2019. These maps help characterize the Permo-Carboniferous batholiths of the Central Pyrenees, particularly the La Maladeta and Andorra Mont-Louis granites.
In this work, we present new Bouguer and residual Bouguer anomaly maps of the Central Pyrenees calculated from 3590 stations, of which 1141 are new observations acquired from surveys performed between 2018 and 2019. The most prominent feature of the Bouguer anomaly is the long wavelength elongated minimum in its central part that continues to the W and ends towards the E with a positive gradient that seems to envelope the minimum. Other short and medium wavelength minima are superimposed, some placed over the batholithic outcrops. In the residual Bouguer, the main relative minima are related with outcrops of batholiths or interpreted buried granites except for the prominent minimum South of La Maladeta Granite, associated with Triassic evaporitic accumulations. These maps (shown on the Main Map) will help characterizing the Permo-Carboniferous batholiths of the Central Pyrenees, in particular La Maladeta and Andorra Mont-Louis granites in order to add constraints to the mechanism of their emplacement.
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