课题基金 / 基金详情

Origin of MORB deduced from the deep-seated rocks from the ocean floor

Origin of MORB deduced from the deep-seated rocks from the ocean floor
MORB 的起源由海底深层岩石推断
批准号:
10440152
负责人:
ARAI Shoji
金额:
$8.64万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B).
财政年份:
1998
资助国家:
日本
项目状态:
已结题
起止时间:
1998 至 2000

项目摘要

项目成果

ARAI Shoji的其他基金

相似基金

相关文献

中文摘要
翻译
1. 对从 EPR 的 Hess Deep 和加勒比海的中开曼海槽获得的超镁铁质岩石进行了岩石学检查,以了解它们的差异(如果有的话),具体取决于扩散率。地幔橄榄岩为方辉橄榄岩(Hess Deep)或二辉橄榄岩(MCT),但两者之间的纯橄榄岩仅略有不同。这种差异与原始 MORB 成分变化一致,该变化仅略微依赖于铺展率。因此,纯橄榄石-方棉岩可能与原生MORB处于平衡状态。纯橄榄岩-方棉岩和MORB都是高压MORB与最上地幔橄榄岩反应的产物。2.将阿曼蛇绿岩中的地幔橄榄岩(可能形成于快速扩张的山脊)和蜥蜴橄榄岩(可能形成于缓慢扩张的山脊)与海底橄榄岩进行了比较。阿曼蛇绿岩的地幔部分以方辉橄榄岩为主,与赫斯深渊相似。在地幔剖面的较深处发现了含 Cpx 的方辉橄榄岩和二辉橄榄岩,并且可以详细讨论快速扩张的山脊下方的熔融过程。蜥蜴橄榄岩主要为二辉橄榄岩至方辉橄榄岩,其中含有铬#为0.3.3的尖晶石。对来自亚特兰蒂斯浅滩的地幔橄榄岩(SWIR)进行了检查,以了解超慢扩张脊下方的熔化过程。在亚特兰蒂斯二号自由区的斜坡上,证实了从二辉橄榄岩到方辉橄榄岩的向上岩性变化,这可以给我们对洋脊下方地幔熔化的空间和温度规律带来限制。
英文摘要
1. Ultramafic rocks obtained from Hess Deep, EPR, and from Mid-Cayman Trough, the Caribbean, were petrologically examined to their difference, if any, depending on the spreading rate. The mantle peridotite is harzburgite (Hess Deep) or lherzolite (MCT), but the dunite-troctolite are only slightly different between the two. This difference is concordant with the primitive MORB compositional variation that is only slightly dependent on spreading rate. The dunite-troctolite are, thus, possibly in equilibrium with the primary MORB.Both the dunite-troctolite and MORB are the product of reaction between high-pressure MORB and peridotite at the uppermost mantle.2. The mantle peridoitites in the Oman ophiolite, possibly formed at a fast-spreading ridge, and the Lizard peridotite, possibly formed at a slow-spreading ridge were compared with the ocean-floor peridotites. The mantle section of the Oman ophiolite is dominated by harzburgite similar to that from Hess Deep. Cpx-bearing harzburgite and lherzolite were found in deeper parts of the mantle section, and the melting process beneath a fast-spreading ridge can be discussed in detail. The Lizard peridotite is dominantly lherzolite to harzburgite with concordant dunite which has spinel with Cr# of 0.3.3. The mantle peridotite from the Atlantis Bank, SWIR, was examined to know the melting process beneath a ultra-slow spreading ridge. An upward lithological variation from lherzolite to harzburgite on a slope of the Atlantis II FZ was confirmed, which can give us constraints on the space and temperature legime of mantle melting beneath the ridge.
期刊论文(66)
专著(0)
科研奖励(0)
会议论文
田村明弘,牧田宗明,荒井章司: "北海道、神居古潭のがんらん者の成因"地質学論集. 52. 53-68 (1999)
Akihiro Tamura、Muneaki Makita、Shoji Arai:“北海道 Kamuikotan 顽固人民的起源”地质评论 52. 53-68 (1999)。
DOI: --
发表时间:
期刊:
影响因子: --
作者: []
通讯作者:
Arai, S., Prichard, H.M., Matsumoto, I., and Fisher, P.C: "Potarite (Pd-Hg) in thermally metamosphosed dunite from the Inazumi-yama ultramafic complex, southwestern Japan : an implication for the behavior of mercury in PGE mineralization in peridotite."Mi
Arai, S.、Prichard, H.M.、Matsumoto, I. 和 Fisher, P.C:“日本西南部 Inazumi-yama 超镁铁杂岩热变质纯铜岩中的钾长石 (Pd-Hg):对 PGE 中汞行为的暗示
DOI: --
发表时间:
期刊:
影响因子: --
作者: []
通讯作者:
33
    Petrological processes of Moho formation
    • 批准号:
      20244085
    • 项目类别:
      Grant-in-Aid for Scientific Research (A)
    • 资助金额:
      $30.12万
    • 财政年份:
      2008
    • 负责人:
      ARAI Shoji
    • 依托单位:
    Oversea Research on the Bou-Azzer Ophiolite (Morocco) of Proterozoic Age
    • 批准号:
      16403010
    • 项目类别:
      Grant-in-Aid for Scientific Research (B)
    • 资助金额:
      $8.32万
    • 财政年份:
      2004
    • 负责人:
      ARAI Shoji
    • 依托单位:
    An integrated genefical model and exploration/evaluation system for chromittite and platinum-group element ores
    • 批准号:
      13554017
    • 项目类别:
      Grant-in-Aid for Scientific Research (B)
    • 资助金额:
      $3.52万
    • 财政年份:
      2001
    • 负责人:
      ARAI Shoji
    • 依托单位:
    Formation and modification of the mantle wedge : from the ocean to the confinent
    • 批准号:
      13440161
    • 项目类别:
      Grant-in-Aid for Scientific Research (B)
    • 资助金额:
      $5.18万
    • 财政年份:
      2001
    • 负责人:
      ARAI Shoji
    • 依托单位:
    海外基金