Vibroseis Seismic Reflection Profiling, Crustal Strructure and Tectonics of Hidaka Collion Zone, Hokkaido, Japan

日本北海道日高碰撞带的可控震源地震反射剖面、地壳结构和构造

基本信息

  • 批准号:
    06402018
  • 负责人:
  • 金额:
    $ 21.63万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (A)
  • 财政年份:
    1994
  • 资助国家:
    日本
  • 起止时间:
    1994 至 1995
  • 项目状态:
    已结题

项目摘要

We tried to image the crustal structure of the Hidaka collision zone (Hidaka metamorphic belt : HMB) along a 20km-long measurement line on Route 236 across the zone by using Vibroseis seismic reflection method (Hidaka vibroseis 94), gravity survey and magnetotelluric observations. The following conclusions are rearched :(1) The Hidaka Main Thrust (HMT) which shows steep dip at the surface dips NNE at 45゚ beneath the HMB,and dips more gently at about 7-km depth beneath the eastern part of the HMB.The HMT is a listric fault. This suggests the HMB to cut the lithology boundary and schistosity of the HMB(2) Although the Hidaka Western Thrust (HWT) separating the Poroshiri ophiolite belt from the Idon'nappu melange belt is not seen at the upper part, a reflectior is detected 1km below the HMT reflector. The part between these two reflectors is inferred to be the Poroshiri ophiolite.(3) The shallow portion of the don'nappu melange belt at front of the collision zone has a number of NNE-dipping reflections, indicative of a fold-and-thrust structure.(4) There is a subhorizontal reflector at 13-km depth only in the NNE part of the seismic profile. This reflector may correspond to the velocity boundary (5.9-6.6 km/s) obtained from seismic refraction profiling in the northern HMB.(5) The gravity data in the area including profiling line show large positive Buoguer anomalies along the Hidaka Mountains, suggesting an existance of high-density material at shallow part of the HMB.(6) Based on magnetotelluric data a high resistivity (10,000 ohm-m) layr of the Hidaka metamorphic rocks reaches about 8km in thickness. Below the layr there is a 2-km thick relatively conductive (100 ohm-m) layr which is underlan by a very high resistivity (150,000 ohm-m) layr.
我们试图用可控震源地震反射法(Hidaka Vibroseis 94)、重力测量和大地电磁观测,沿236号公路上一条长达20公里的测线,对东高碰撞带(Hidaka变质带:HMB)的地壳结构进行成像。结果表明:(1)东高主冲断带在地表呈陡峭倾角,在45゚处向北北东倾斜,在东侧约7公里深度处倾角较缓,为一条板状断裂。这表明HMB切割了HMB的岩性边界和片理。(2)虽然在上部看不到将波罗什里蛇绿岩带与Idon‘nappu混杂岩带分开的东达卡西冲断(HWT),但在HMT反射层下方1公里处发现了反射体。这两个反射体之间的部分被推测为波罗什里蛇绿岩。(3)碰撞带前面的东纳普混杂岩带的浅部有多个NNE向倾斜的反射,指示了褶皱逆冲构造。(4)仅在地震剖面的NNE向部分存在13公里深的近水平反射层。该反射体可能对应于HMB北部地震折射剖面得到的速度边界(5.9-6.6公里/S)。(5)包括剖面线在内的该地区的重力数据显示沿日达卡山脉有较大的布格尔正异常,表明HMB浅层存在高密度物质。(6)根据大地电磁资料,日达卡变质岩层的高电阻率(10,000欧姆-米)厚约8公里。在层下面有一个2公里厚的相对导电层(100欧姆-米),它的下面是一个非常高的电阻率(150,000欧姆-米)层。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

ARITA Kazunori其他文献

ARITA Kazunori的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('ARITA Kazunori', 18)}}的其他基金

Investigation of pathogenic mechanisms for central post-stroke pain and its accompanying emotional disorder - evaluation of microglial activation hypothesis
中枢性中风后疼痛及其伴随情绪障碍发病机制的研究——小胶质细胞激活假说的评估
  • 批准号:
    15K10311
  • 财政年份:
    2015
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Analysis of CD133 positive cells in pituitary adenoma
垂体腺瘤CD133阳性细胞分析
  • 批准号:
    21591875
  • 财政年份:
    2009
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Formation mechanism and uplift process of the Kathmandu nappe in the Nepal Himalaya : a geochronological approach
尼泊尔喜马拉雅山加德满都推覆体的形成机制和隆起过程:地质年代学方法
  • 批准号:
    18540447
  • 财政年份:
    2006
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Integrated studies on Himalayan uplift and climatic changes - A case of Kathmandu Nappe
喜马拉雅隆升与气候变化的综合研究——以加德满都推覆体为例
  • 批准号:
    11691112
  • 财政年份:
    1999
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Reconstruction of Impaired CNS Pathway using Adenovirus Vector
使用腺病毒载体重建受损的中枢神经系统通路
  • 批准号:
    10470293
  • 财政年份:
    1998
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Thrust tectonics of Hidaka Collion Zone and formation of Hidaka Mountains, Hokkaido, Japan
日本北海道日高碰撞带逆冲构造与日高山脉的形成
  • 批准号:
    08640564
  • 财政年份:
    1996
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Petrological and isotope geochronological study on the uplift of the Hidaka Mountains, Hokkaido, Japan
日本北海道日高山脉隆起的岩石学和同位素年代学研究
  • 批准号:
    02640590
  • 财政年份:
    1990
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Himalayan uplift by means of mineral dating and petrological study.
通过矿物测年和岩石学研究进行喜马拉雅隆起。
  • 批准号:
    61540550
  • 财政年份:
    1986
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

相似海外基金

Geotectonic analyses of the Hidaka Collision Zone, northern Japan, based on zircon U-Pb ages
基于锆石 U-Pb 年龄的日本北部日高碰撞带大地构造分析
  • 批准号:
    16K05585
  • 财政年份:
    2016
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Super-deep seismic reflection study in growth of continental crust beneath the Hidaka Collision Zone, Hokkaido
北海道日高碰撞带下方大陆地壳生长的超深地震反射研究
  • 批准号:
    12304027
  • 财政年份:
    2000
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Evolution and deformation process of the Hidaka Collision Zone, Central Hokkaido, Japan.
日本北海道中部日高碰撞带的演化与变形过程。
  • 批准号:
    10304033
  • 财政年份:
    1998
  • 资助金额:
    $ 21.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了