Abstract
The isotopic composition of lead from a total of 53 samples of galena from 18 VHMS deposits shows a range between 17.437 and 18.111 for Pb-206/Pb-204; 15.484 and 15.630 for Pb-207/Pb-204 and 37.201 - 38.027 for Pb-208/204. The results show a systematic trend with the leads of the Sibay, Barsuchiy Log and Djusa deposits being most radiogenic by comparison with those of Bakr-Tau and Oktiabrskoe which are the least radiogenic deposits. The Bakr-Tau and Oktiabrskoe deposits occur within most primitive fore-arc rocks at the lower part of the Baymak-Buribay formation, which contain lavas of boninitic affinity. The Sibay, Barsuchiy Log and Djusa deposits are found in intra- and back-arc setting and are hosted by a sequence of bimodal tholeiites. The deposits in "arc" settings such as the Balta-Tau, Gai and Alexandrinka deposits occupy an intermediate position. This trend is explained in term of mixing between mantle wedge and continental blocks.
| Original language | English |
|---|---|
| Title of host publication | Mineral Deposit Research: Meeting the Global Challenge |
| Editors | J Mao, FP Bierlein |
| Place of Publication | Berlin; Heidelberg |
| Publisher | Springer, Springer Nature |
| Pages | 667-670 |
| Number of pages | 4 |
| ISBN (Electronic) | 9783540279464 |
| ISBN (Print) | 9783540279457 |
| DOIs | |
| Publication status | Published - 2005 |
| Externally published | Yes |
| Event | 8th Biennial SGA Meeting - Beijing, China Duration: 18 Aug 2005 → 21 Aug 2005 |
Conference
| Conference | 8th Biennial SGA Meeting |
|---|---|
| Country/Territory | China |
| City | Beijing |
| Period | 18/08/05 → 21/08/05 |
Keywords
- lead isotopes
- Urals
- massive sulphide deposits
- SOUTH URALS
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