| dc.creator |
Maboko, Makenya A. H. |
|
| dc.creator |
Mcdougall, Ian |
|
| dc.creator |
Zeitler, P. K. |
|
| dc.date |
2016-05-12T15:25:54Z |
|
| dc.date |
2016-05-12T15:25:54Z |
|
| dc.date |
1989 |
|
| dc.date.accessioned |
2018-03-27T08:57:01Z |
|
| dc.date.available |
2018-03-27T08:57:01Z |
|
| dc.identifier |
Maboko, M.A.H., McDougall, I. and Zeitler, P.K., 1989. Dating late Pan-African cooling in the Uluguru granulite complex of Eastern Tanzania using the 40 Ar 39 Ar technique. Journal of African Earth Sciences (and the Middle East), 9(1), pp.159-167. |
|
| dc.identifier |
http://hdl.handle.net/20.500.11810/2006 |
|
| dc.identifier |
10.1016/0899-5362(89)90017-1 |
|
| dc.identifier.uri |
http://hdl.handle.net/20.500.11810/2006 |
|
| dc.description |
Full text can be accessed at
http://www.sciencedirect.com/science/article/pii/0899536289900171 |
|
| dc.description |
Age spectra measured by the 40Ar39Ar technique on hornblende, muscovite and K-feldspar from the Uluguru granulite complex of Eastern Tanzania indicate that following granulite facies metamorphism at ∼ 715 Ma the terrane cooled slowly, reaching a temperature of ∼475°C about 630 Ma ago. Subsequent cooling was even slower, reaching temperatures of ∼170°C about 420 Ma ago. Assuming a simple relationship between cooling rate and thermal gradient, the cooling history translates into an uplift path characterized by a phase of rapid uplift soon after granulite facies metamorphism followed by a period of slow uplift which began about 630 Ma ago. Such a history is consistent with model thermal histories of crustal segments undergoing thermal relaxation and isostatically-driven uplift following tectonic thickening events. |
|
| dc.language |
en |
|
| dc.publisher |
Elsevier |
|
| dc.title |
Dating Late Pan-African Cooling in the Uluguru Granulite Complex Of Eastern Tanzania Using the 40Ar_39Ar Technique |
|
| dc.type |
Journal Article |
|