Sm-Nd dating of fluorite from the worldclass Montroc fluorite deposit, southern Massif Central, France
Mineralium Deposita
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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.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Sm-Nd dating of fluorite from the worldclass Montroc fluorite deposit, southern Massif Central, France |
| Series title | Mineralium Deposita |
| DOI | 10.1007/s00126-004-0453-9 |
| Volume | 39 |
| Issue | 8 |
| Year Published | 2005 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Mineralium Deposita |
| First page | 970 |
| Last page | 975 |
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