| Reference Type | Journal (article/letter/editorial) |
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| Title | Excess argon in amphiboles linked to greenschist facies alteration in the Kamila Amphibolite Belt, Kohistan island arc system, northern Pakistan: insights from 40Ar/39Ar step-heating and acid leaching experiments |
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| Journal | Geological Magazine |
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| Authors | Wartho, Jo Anne | Author |
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| Rex, David C. | Author |
| Guise, Philip G. | Author |
| Year | 1996 (September) | Volume | 133 |
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| Issue | 5 |
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| Publisher | Cambridge University Press (CUP) |
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| DOI | doi:10.1017/s0016756800007871Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 257092 | Long-form Identifier | mindat:1:5:257092:5 |
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| GUID | 0 |
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| Full Reference | Wartho, Jo Anne, Rex, David C., Guise, Philip G. (1996) Excess argon in amphiboles linked to greenschist facies alteration in the Kamila Amphibolite Belt, Kohistan island arc system, northern Pakistan: insights from 40Ar/39Ar step-heating and acid leaching experiments. Geological Magazine, 133 (5) 595-609 doi:10.1017/s0016756800007871 |
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| Plain Text | Wartho, Jo Anne, Rex, David C., Guise, Philip G. (1996) Excess argon in amphiboles linked to greenschist facies alteration in the Kamila Amphibolite Belt, Kohistan island arc system, northern Pakistan: insights from 40Ar/39Ar step-heating and acid leaching experiments. Geological Magazine, 133 (5) 595-609 doi:10.1017/s0016756800007871 |
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| In | (1996, September) Geological Magazine Vol. 133 (5) Cambridge University Press (CUP) |
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| Abstract/Notes | AbstractA mineralogical and 4OAr/39Ar study of 13 amphibole samples in the Kamila Amphibolite Belt and Kamila Shear Zone in northern Pakistan has found a correlation between the degree of greenschist facies alteration and quantity of excess 40Ar. Additionally, there is a north–south divide with amphibole samples from the northern region showing larger degrees of gree schist facies alteration, brittle deformation, and excess 40Ar incorporation compared to the predominantly plastically deformed, less altered, amphibole samples from the Kamila Shear Zone in the south. Acid leaching of two amphiboles from the Kamila Amphibolite Belt indicates that a large proportion of the excess 40Ar is correlated with later greenschist facies alteration hases, and can be easily removed by acid etching, thus revealing acceptable regional 40Ar/39Ar plateau ages. |
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