Development of the crust continental in the colision zone

碰撞带地壳大陆的发育

• 批准号: 05640530
• 负责人: HIRAJIMA Takao
• 金额: $ 1.47万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05640530/
• 关键词: ultra-high pressure rocks; Eclogite; Coesite; Su-Lu metamorphic belt; Dora Maira Massif; 超高圧変成作用; 変成花崗岩; 蘇魯地域; 中国; 超塩基性岩; 蘇魯帯

The indoor experiments for the ultra-high pressure (UHP) rocks from Dora Maira Massif, western Alps, and from Su-Lu region in the Shandong Peninsula, China, were carried out.Based on more than 600 thin section observation of the Dora Maira samples, a precise P-T-t path of the UHP rocks, especially P-T conditions of the climax UHP stage and a retrograde stage but under still higher pressure condition, were determined. A new amphibole group mineral, ferronyboeite was also identified as a retrograde phase of UHP rocks. The output of our geological and petrological studies were referred in two guide books of international meetings held in 1994 and 1995 in Italy.Our study in the Shandong Peninsular reveals following facts :1) The spatial distribution of the UHP rocks were determined in the Shandong Peninsular ; the area to the South of the Yantai-Qingdao-Wullian Fault.2) UHP evidence were found from various kind of lithotypes, e.g., garnet-lherzolite, marble and metagranite. The UHP metagranite in Shandong is the first example in the Asia, and the second in the world.3) Rb-Sr dating of the gneissose rocks indicates that the LP gneiss in the NW area of the Peninsular shows significantly older age (1800Ma) than the gneiss in the UHP area (700Ma). The latter age suggest the basement of the UHP area were correlated to the Yangtzi Craton.

对西阿尔卑斯山多拉迈拉地块和中国山东半岛苏鲁地区的超高压岩石进行了室内实验，基于对多拉迈拉地块600余张薄片观测通过对样品的分析，确定了超高压岩石的精确 P-T-t 路径，特别是超高压高潮阶段和逆行阶段但仍处于更高压力条件下的 P-T 条件。一种新的角闪石族矿物，铁尖石也被鉴定为超高压岩石的逆行相。我们的地质和岩石学研究成果被1994年和1995年在意大利举行的两本国际会议指南所引用。我们在山东半岛的研究揭示了以下事实：1）确定了山东半岛超高压岩石的空间分布;烟台-青岛-武连断裂带以南地区。2)在石榴石-二辉橄榄岩、大理岩、变花岗岩等多种岩型中发现了超高压证据。山东超高压变花岗岩属亚洲首例、世界第二例。 3)片麻岩Rb-Sr测年表明,半岛西北地区的LP片麻岩年龄(1800Ma)明显较超高压区（700Ma）片麻岩。后者的年龄表明超高压区域的基底与扬子克拉通相关。

项目成果

Compagnoni, R., Hirajima, T.,: "Chapter 7: Ultra-high-pressure metamorphic rocks in western Aips." In“Ultrahigh pressure metamorphism"eds,by Coleman, R. G. and Wnag. X.206-243 (1995)

Compagnoni, R., Hirajima, T.，：“第 7 章：西部 Aips 的超高压变质岩。”《超高压变质作用》，作者：Coleman, R. G. 和 Wnag X.206-243 (1995)。

Wang.Q.,他: "Coesite-bearing granulite retrograded from eclogite in Weihai eastern China:A preliminary study." European Jour.Mineralogy. 5. 141-152 (1993)

Wang.Q. 等人：“中国威海东部榴辉岩的含柯石英麻粒岩的退变：初步研究。欧洲矿物学杂志”5. 141-152 (1993)。

Compagnoni, R., Hirajima, T., and Chopin, C.,: "Chapter7: Ultra-high-pressure metamorphic rocks in the western Alps." Ultrahigh pressure metamorphism"eds. by Coleman, R. G., and Wnag, X.,. 206-243. (1995)

Compagnoni, R.、Hirajima, T. 和 Chopin, C.：“第七章：阿尔卑斯山西部的超高压变质岩。”

石渡 明・平島崇男他: "中国蘇魯変成帯調査報告-超高圧変成岩の温度圧力履歴と原岩の多様性について-" 月刊地球. 18. 146-152 (1995)

石渡彰、平岛隆雄等：“中国苏鲁变质带调查报告——关于超高压变质岩的温度、压力历史和烃源岩多样性——”地球月刊18。146-152（ 1995)

Hiramatsu, N., and Hirajima, T.,: "Petrology of the Hujialin garnet clinopyroxenite in the Su-Lu ultrahigh-pressure(UHP)province, eastern China.," lsland Arc,. 4,. 310-323 (1995)

Hiramatsu, N. 和 Hirajima, T.，“中国东部苏鲁超高压 (UHP) 省胡家林石榴石斜辉石岩的岩石学。”，岛弧，。