Studies on the uplift, denudation and cooling history of the Himalayan range and associated changes in monsoon

喜马拉雅山隆升、剥蚀、冷却历史及季风变化研究

• 批准号: 23340156
• 负责人: SAKAI Harutaka
• 金额: $ 13.15万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23340156/
• 关键词: ヒマラヤ; 変成帯; ナップ; モンスーン; テクトニクス; 大陸衝突; 造山帯; ヒマラヤ山脈; 変成岩ナップ; 大陸衝突型造山帯; 熱年代学; 高温延性剪断帯; 古気候; 古環境

Chronological and petrological studies on sillimanite-kyanite grade metamorphic rocks of the lower part of the Higher Himalayan Crystallines and the Main Central Thrust zone at the frontal part of nappe in Dhankuta area, eastern Nepal revealed that they were formed under condition of 11 kb/720 centigrade and 8 kb/580 centigrade, respectively. Their P/T condition are as same as those of the metamorphic rocks distributed 100 km to the north of nappe front. It suggests that the metamorphic belt was nearly horizontal and its northern end had constituted the middle crust of Tibet after delamination of subducted Indian upper crust.Heavy mineral analysis of the foreland basin sediments, Dumri Formation, clarified that preceding of the emplacement of higher-grade metamorphic nappe during 15-10 Ma, lower-grade metamorphic rocks of the Kathmandu nappe exhumed and eroded during 20-16 Ma.

对尼泊尔东部丹库塔地区高喜马拉雅结晶带下部和推覆体前缘主中央冲断带的硅线石-蓝晶石级变质岩的年代学和岩石学研究表明，它们分别形成于11 kb/720 ℃和8 kb/580 ℃的条件下。其P/T条件与推覆体前缘以北100 km处的变质岩相同。前陆盆地沉积物Dumri组的重矿物分析表明，在高级变质推覆体侵位之前的15-10 Ma，加德满都推覆体的低级变质岩石在20-16 Ma被剥蚀出露。

项目成果

Syn-metamorphic fluid infiltration and petrogenesis of leucogranites in the MCT zone in Eastern Nepal

尼泊尔东部MCT带同变质液渗透与淡色花岗岩岩石成因

• 发表时间: 2013
• 作者: Taguchi;B.;Kawakami,T
• 通讯作者: Kawakami,T

Guidebook for Excursion on Geology of Kathmandu Valley (Nepal Geological Society, Special Publication Series No.2)

加德满都谷地地质游览指南（尼泊尔地质学会，特刊系列第2号）

• 发表时间: 2012
• 作者: Komiya;T.;Han;J.;Nakao;T.;Uesugi;K. & Hoshino;M.;Harutaka Sakai
• 通讯作者: Harutaka Sakai

Emplacement of hot Lesser Himalayan nappes from 15 to10 Ma in the Jumla-Surkhet region, western Nepal, and their thermal imprint on the underlying Early Miocene fluvial Dumri Formation

尼泊尔西部 Jumla-Surkhet 地区 15 Ma 至 10 Ma 的小喜马拉雅热推覆体就位，及其对底层早中新世河流杜姆里地层的热印记

• 发表时间: 2013
• 期刊: Island Arc
• 影响因子: 1.5
• 作者: Harutaka Sakai;Hideki Iwano;Tohru Danhara;Takafumi Hirata;Yutaka Takigami
• 通讯作者: Yutaka Takigami

ネパールヒマラヤの Ampipal閃長岩は,白亜紀のインド亜大陸の分裂に伴う深成岩体である : U-Pb 年代学からのアプローチ

尼泊尔喜马拉雅山的 Ampipal 正长岩是与白垩纪印度次大陆分裂有关的深成岩体：U-Pb 年代学的方法

• 发表时间: 2013
• 作者: Tsukasa Ohba;Sho Komatsu;Shintaro Hayashi;Masao Ban;Kohei Takayama;Iwan Setiawan;岩野英樹
• 通讯作者: 岩野英樹

LA-ICPMS 法によるウラン定量と第四紀ジルコン FT 測定

LA-ICPMS 法和第四纪锆石 FT 测量测定铀

• 发表时间: 2013
• 作者: Ishikawa;Tomoko;岩野英樹
• 通讯作者: 岩野英樹