Generation of Palaeoproterozoic tonalites and associated high-K granites in southwestern Tanzania by partial melting of underplated mafic crust in an intracontinental setting: Constraints from geochemical and isotopic data
详细信息 查看全文
- 作者：Shukrani Manya ; shukrani73@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; Makenya A.H. Maboko
- 关键词：Usagaran Belt ; Makambako&ndash ; Njombe traverse ; Msusule tonalites ; High-K granites ; Palaeoproterozoic
- 刊名：Lithos
- 出版年：2016
- 出版时间：1 September 2016
- 年：2016
- 卷：260
- 期：Complete
- 页码：120-133
- 全文大小：2572 K
文摘
- •
The SW part of Tanzania is intruded by hbl-rich tonalites and high-K, I-type granites
- •
The tonalites are TTG-like melts albeit with different trace element compositions
- •
Both the tonalites and high-K granites represent the regional 1.8–1.9 Ga magmatic event in SW Tanzania
- •
The tonalites were generated by partial melting of a mantle derived mafic underplate
- •
The high-K granites are formed by partial melting of both the underplate and pre-existing old crust.