Results 191 to 200 of about 2,907 (228)
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Interpretation of heat flow data in the french massif central
Tectonophysics, 1984Abstract We investigate in this paper the possible origin of the high heat flow anomaly observed in the Massif Central (100–110 mW m−2). A detailed study of crustal heat production shows that the radioactive component cannot account for the entire surface anomaly.
Francis Lucazeau +2 more
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Imaging a mantle plume beneath the French Massif Central
Earth and Planetary Science Letters, 1995Abstract Teleseismic tomography is now widely recognised as a very powerful tool for studying the velocity structure of the lithosphere-asthenosphere system on both local and regional scales. A prime objective is to identify velocity perturbations and to constrain their location and intensity. Here we use the arrival times of P-waves from teleseismic
Michel Granet +2 more
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Temperature and Dynamics of the Upper Mantle Beneath the French Massif Central
1997We introduce a new technique for the dynamic interpretation of high resolution tomographic image and apply it to the French Massif Central. Using petrological and mineral physics data, we convert an upper mantle tomographic model into a 3-D temperature distribution which is then used as input for the dynamic model.
Sobolev, S. +3 more
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Dendrogeomorphic reconstruction of debris-flow activity in Sancy Massif (French Massif Central)
2023Debris flows (DFs) are one of the main geomorphic processes occurring in mountain regions, where they may repeatedly cause economic losses and even fatalities. Usually, along the same track, DFs may recur with various frequencies and magnitudes. Generally, because of the short collective memory and the lack or uncomplete archival records, little is ...
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Studia Geophysica et Geodaetica, 2000
We present the first results of a comparison of deep lithosphere structure of three Variscan massifs - the Armorican Massif, French Massif Central and Bohemian Massif, as revealed by recent tomographic studies of seismic anisotropy. The data originate from several field measurements made in temporary arrays of stations equipped with both short-period ...
Jaroslava Plomerová +7 more
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We present the first results of a comparison of deep lithosphere structure of three Variscan massifs - the Armorican Massif, French Massif Central and Bohemian Massif, as revealed by recent tomographic studies of seismic anisotropy. The data originate from several field measurements made in temporary arrays of stations equipped with both short-period ...
Jaroslava Plomerová +7 more
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Seismogenic nodes defined with pattern recognition in the French Massif Central
Journal of Iberian Geology, 2018The goal of this work is to identify seismogenic nodes capable of generating I0 ≥ VI earthquakes in the French Massif Central, an intraplate region of low-to-moderate seismicity in the Mediterranean. For this purpose, we apply a phenomenological approach based on the pattern recognition.
A. Gorshkov, Y. Gaudemer
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Magnetic structural analysis of the montmarault granite (french massif central)
Journal of Structural Geology, 1987Abstract A magnetic fabric study has been made in the eastern branch of the Montmarault granite. Magnetic foliation (in accordance with the visible foliation of the country rocks) and magnetic lineation dip typically towards the SE in the eastern part of the massif (monzonitic granite) and towards the WNW in the western part (granodiorite), thus ...
M Sossa-Simawango, B Henry, L Daly
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Volcanism of the Monts Dore (French Massif Central)
2016Pavin volcano is located both in the southern part of Chaine des Puys and in the Monts Dore volcanic area. According to the very young age of Pavin volcano (about 7000 y BP), Pavin volcanic area is considered to belong to the Chaine des Puys, while the activity of the Monts Dore stratovolcano ended about 200 ka ago.
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Bryophyte flora and vegetation of serpentine sites in the French Massif Central
Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, 2018AbstractEight major serpentine sites in the French Massif Central have been bryofloristically surveyed and their specific assemblages studied by performing systematic releves. Seventy bryophyte taxa are reported from these serpentine areas. Archidium alternifolium, Bryum gemmilucens, Cephaloziella stellulifera, Grimmia dissimulata, Racomitrium ...
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Igneous Activity. Caledono-Hercynian Magmatism in the French Massif Central
1994This chapter presents Caledono-Hercynian magmatism under two main headings: magmatism, Sections 2–5 granitoid magmatism, Section ...
A. Ploquin +8 more
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