The evolution of Archean continental roots : An integrated study of crustal and mantle xenoliths and intracontinental high-pressure metamorphic belts of Tanzania

太古宙大陆根源的演化:坦桑尼亚地壳、地幔捕虏体和陆内高压变质带的综合研究

• 批准号: 21340148
• 负责人: TSUJIMORI Tatsuki
• 金额: $ 11.4万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21340148/
• 关键词: タンザニア地塊; 下部地殻; リソスフェアマントル; ざくろ石かんらん岩; グラニュライト; エクロジャイト

The lower crustal and lithospheric mantle xenolith suites of the Archean Tanzanian craton show lithological variation from kyanite-bearing high-pressure granulite(rare eclogite) to garnet-bearing peridotites. An integrated study of garnet peridotite xenoliths indicates strongly depleted zone in the lithosphere root at depths of~ 130-145 km ; a few samples suggest an initial stabilization at depths of~ 160 km. Moreover, the study revealed that the cratonic root is pervaded by episodic metasomatic melts, which have interacted with lithospheric mantle beneath the Archean Tanzanian craton. This indicates a physicochemical stratification of the lithospheric mantle beneath the Tanzanian craton.

太古代坦桑尼亚克拉通下地壳和岩石圈地幔捕虏体组合显示出从含蓝晶石高压麻粒岩（罕见榴辉岩）到含石榴子石橄榄岩的岩性变化。对石榴橄榄岩捕虏体的综合研究表明，岩石圈根部在~ 130-145 km深度处存在强烈的亏损带;少数样品表明在~ 160 km深度处存在初始稳定化。此外，研究表明，在太古代坦桑尼亚克拉通下的岩石圈地幔的幕式交代熔体，它已经渗透到地幔根。这表明坦桑尼亚克拉通下的岩石圈地幔的物理化学分层。

项目成果

Eclogites and related metamorphism in the North America-Caribbean plate boundary : An example from the Motagua fault zone, Guatemalas

北美-加勒比板块边界的榴辉岩和相关变质作用：以危地马拉莫塔瓜断层带为例

• 发表时间: 2009
• 作者: Tsujimori T.;Hernandez-Pineda G.A.
• 通讯作者: Hernandez-Pineda G.A.

Metamorphic P–T conditions and thermal structure of Chinese Continental Scientific Drilling main hole eclogites: Fe–Mg partitioning thermometer vs. Zr‐in‐rutile thermometer

• DOI: 10.1111/j.1525-1314.2009.00831.x
• 发表时间: 2009-12
• 期刊: Journal of Metamorphic Geology
• 影响因子: 3.4
• 作者: R. Zhang;Y. Iizuka;W. Ernst;J. G. Liou;Z.-Q. Xu;T. Tsujimori;C. Lo;B. Jahn

Rare Earth Element-SiO_2 systematics of island arc lower crust amphibolite migmatite from Yakuno Ophiolite, SW Japan : a field evaluation of some model predictions

日本西南部Yakuno蛇绿岩岛弧下地壳角闪岩混合岩的稀土元素-SiO_2系统学：对一些模型预测的现场评估

• 发表时间: 2011
• 作者: Pu X. F.;Brophy J. G.;Tsujimori T.
• 通讯作者: Tsujimori T.

Multiple origins of zircons in jadeitite

• DOI: 10.1007/s00410-009-0453-y
• 发表时间: 2010-06
• 期刊: Contributions to Mineralogy and Petrology
• 影响因子: 3.5
• 作者: B. Fu;J. Valley;N. Kita;M. Spicuzza;C. Paton;T. Tsujimori;M. Bröcker;G. Harlow

Introduction-Jadeitite : new occurrences, new data, new interpretatious-

简介-翡翠：新出现、新数据、新解释-

• DOI: 10.1127/0935-1221/2012/0024-2196
• 发表时间: 2012
• 期刊: European Journal of Mineralogy
• 影响因子: 2.1
• 作者: Harlow G.E.;Tsujimori T.;Sorensen S.S.
• 通讯作者: Sorensen S.S.