| Abstract: | A three-point Sm-Nd isotope isochron on fluorite from the very large Montroc fluorite vein deposit (southern Massif Central, France) defines an age of 111??13 Ma. Initial ??Nd of -8.6 and initial 87Sr/86Sr of ???0.71245 suggest an upper crustal source of the hydrothermal system, in agreement with earlier work on fluid inclusions which indicated a basinal brine origin. The mid-Cretaceous age of ???111 Ma suggests the Albian/Aptian transition as the most likely period for large-scale fluid circulation during a regional extensional tectonic event, related to the opening of the North Atlantic ocean. ?? Springer-Verlag 2004. |
| Genre: | Article |
| ProdID: | 70029059 |
| Citation Author: | Munoz, M.; Premo, W. R.; Courjault-Rade, P. |
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| Citation End Page: | 975 |
| Citation Issue: | 8 |
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| Citation Language: | English |
| Citation Larger Work Title: | Mineralium Deposita |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | Sm-Nd dating of fluorite from the worldclass Montroc fluorite deposit, southern Massif Central, France; 2005; Article; Journal; Mineralium Deposita; Munoz, M.; Premo, W. R.; Courjault-Rade, P. |
| Citation Start Page: | 970 |
| Citation Volume: | 39 |
| Citation Year: | 2005 |
| Type: | citation/reference |
| Text: | Sm-Nd dating of fluorite from the worldclass Montroc fluorite deposit, southern Massif Central, France; 2005; Article; Journal; Mineralium Deposita; Munoz, M.; Premo, W. R.; Courjault-Rade, P. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1007/s00126-004-0453-9 |
| Date Other: | Sat, 1 Jan 2005 00:00 -0600 |
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