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Seismic Structure of Ultramafics at Shallow Crustal levels from On-Bottom Refraction at the Mid-Atlantic Ridge

Seismic Structure of Ultramafics at Shallow Crustal levels from On-Bottom Refraction at the Mid-Atlantic Ridge
从大西洋中脊底部折射得到的浅地壳层超镁铁质地震结构
批准号:
9819297
负责人:
John Collins
金额:
$17.21万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-03-01 至 2004-02-29

项目摘要

项目成果

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中文摘要
翻译
在中大西洋海脊广泛露出地幔橄榄岩的位置,进行了一系列使用底炮和接收器的海底地震折射实验,以及使用气枪和海底接收器的地震折射剖面。该项目的目标是:(1)确定在这三个地点发现的超镁铁矿体的深度范围;(2)将这些已知橄榄岩露头的速度结构与在Fas扩张山脊形成的典型喷发-岩脉-辉长岩火成岩剖面中发现的速度结构进行对比;(3)利用这些橄榄岩露头的精细速度结构来识别钻探条件良好的块状、未破裂的露头。
英文摘要
A series of both on-bottom seismic refraction experiments using bottom shots and receivers, and seismic refraction profiles using airgun shots and seafloor receivers was conducted on the Mid-Atlantic Ridge in locations where there are extensive outcrops of mantle peridotites. The objectives of this project are to: (1) determine the depth extend of ultramafic bodies found in the three locations, (2) contrast the velocity structure at these known peridotite outcrops with that found in a typical extrusive-dike-gabbro igneous section formed at a fas spreading ridge, and (3) use the fine-scale velocity structure of these peridotite exposures to identify massive, unfractured outcrops where drilling conditions are good.
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Renewal of the Ocean Bottom Seismic Instrument Center at Woods Hole Oceanographic Institution
  • 批准号:
    2316001
  • 项目类别:
    Cooperative Agreement
  • 资助金额:
    $999.94万
  • 财政年份:
    2023
  • 负责人:
    John Collins
  • 依托单位:
Doctoral Dissertation Research: Blockchain and the Frontiers of Provenance and Risk in the Cattle Ranching Industry
Mid-scale RI-1 (M1:DP): Design and Construction of a New Generation of Ocean-Bottom Seismographs for the U.S. Academic Community
  • 批准号:
    2131932
  • 项目类别:
    Standard Grant
  • 资助金额:
    $649.61万
  • 财政年份:
    2021
  • 负责人:
    John Collins
  • 依托单位:
Collaborative Research: Mapping and Understanding Seismic Anisotropy in the Northeast Pacific Ocean
  • 批准号:
    1830991
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $17.88万
  • 财政年份:
    2020
  • 负责人:
    John Collins
  • 依托单位:
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