Abstract
Metaigneous rocks from Gampola and Nuwara Eliya belong to the Highland Complex of Sri Lanka. Rb-Sr and Sm-Nd age data and initial Sr and Nd isotopic ratios document several geological events. (1) Separation of crustal material began in the late Archean. (2) Partial melting of crust took place on a large scale at ca. 2400 Ma, leaving metaigneous rocks as restite after extraction of felsic magmas. (3) High-grade metamorphism related to the Pan-African orogeny occurred at 520 Ma. (4) Partial melting of crustal material proceeded on a local scale at 490 Ma-480 Ma, producing slight disturbance to the Rb-Sr whole-rock system.
| Original language | English |
|---|---|
| Pages (from-to) | 139-144 |
| Number of pages | 6 |
| Journal | Proceedings of the Japan Academy Series B: Physical and Biological Sciences |
| Volume | 71 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Jan 1 1995 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Agricultural and Biological Sciences(all)
- Physics and Astronomy(all)
Cite this
Rb-Sr and Sm-Nd Ages from the Highland Complex of Sri Lanka. / Kagami, Hiroo; Owada, Masaaki; Osanai, Yasuhito; Shiraishi, Kazuyuki; Hiroi, Yoshikuni.
In: Proceedings of the Japan Academy Series B: Physical and Biological Sciences, Vol. 71, No. 5, 01.01.1995, p. 139-144.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Rb-Sr and Sm-Nd Ages from the Highland Complex of Sri Lanka
AU - Kagami, Hiroo
AU - Owada, Masaaki
AU - Osanai, Yasuhito
AU - Shiraishi, Kazuyuki
AU - Hiroi, Yoshikuni
PY - 1995/1/1
Y1 - 1995/1/1
N2 - Metaigneous rocks from Gampola and Nuwara Eliya belong to the Highland Complex of Sri Lanka. Rb-Sr and Sm-Nd age data and initial Sr and Nd isotopic ratios document several geological events. (1) Separation of crustal material began in the late Archean. (2) Partial melting of crust took place on a large scale at ca. 2400 Ma, leaving metaigneous rocks as restite after extraction of felsic magmas. (3) High-grade metamorphism related to the Pan-African orogeny occurred at 520 Ma. (4) Partial melting of crustal material proceeded on a local scale at 490 Ma-480 Ma, producing slight disturbance to the Rb-Sr whole-rock system.
AB - Metaigneous rocks from Gampola and Nuwara Eliya belong to the Highland Complex of Sri Lanka. Rb-Sr and Sm-Nd age data and initial Sr and Nd isotopic ratios document several geological events. (1) Separation of crustal material began in the late Archean. (2) Partial melting of crust took place on a large scale at ca. 2400 Ma, leaving metaigneous rocks as restite after extraction of felsic magmas. (3) High-grade metamorphism related to the Pan-African orogeny occurred at 520 Ma. (4) Partial melting of crustal material proceeded on a local scale at 490 Ma-480 Ma, producing slight disturbance to the Rb-Sr whole-rock system.
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U2 - 10.2183/pjab.71.139
DO - 10.2183/pjab.71.139
M3 - Article
AN - SCOPUS:21844484753
VL - 71
SP - 139
EP - 144
JO - Proceedings of the Japan Academy Series B: Physical and Biological Sciences
JF - Proceedings of the Japan Academy Series B: Physical and Biological Sciences
SN - 0386-2208
IS - 5
ER -