Imagery of crustal-scale As-Au-Sb hydrothermal palaeofields in the Variscan belt: vertical seismic reflection (GeoFrance 3D: French Massif Central)
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- 作者：Bitri ; Adnand ; Truffert ; Catherine ; Bellot ; Jean-Philippe ; Bouchot ; Vincent ; Ledru ; Patrick ; et. al.
- 关键词：metallogeny ; vertical seismic reflection ; Variscan belt ; Limousin ; France ; mé ; tallogé ; nie ; sismique ré ; flexion verticale ; chaî ; ne varisque ; Limousin ; France
- 刊名：Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science
- 出版年：1999
- 出版时间：December 15, 1999
- 年：1999
- 卷：329
- 期：11
- 页码：771-777
- 全文大小：1.14 M
文摘
Two new deep seismic profiles have investigated crustal-scale hydrothermal paleofields emplaced during the W-Au-Sb metallogenic epoch between 300 and 320 Ma in Limousin (French Massif Central). The first cuts across the Argentat Fault, a major channel-way, and the second runs through the Meuzac antiform, the main goldfield in the area. Particular features observed on each profile (transparent seismic zone, crustal scale discontinuities) confirm the different behaviors of structures and geological formation during this mineralizing period.