Magmatic history of the BAT region of Venus: new constraints from the dyke swarm record

金星 BAT 区域的岩浆历史:岩墙群记录的新限制

基本信息

  • 批准号:
    RGPIN-2014-04258
  • 负责人:
  • 金额:
    $ 2.19万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2018
  • 资助国家:
    加拿大
  • 起止时间:
    2018-01-01 至 2019-12-31
  • 项目状态:
    已结题

项目摘要

On Venus all basaltic magmatism is intraplate and I propose to provide new insights into the magmatic record of the BAT (Beta Atla Themis) region of Venus by applying concepts being developed for the class of terrestrial intraplate events known as Large Igneous Provinces (LIPs). The BAT is the most significant region on Venus in terms of the abundance of its magmatic features (plume-scale volcanic edifices), scale of rifting and relatively young age. *With huge volumes (up to millions of cubic kilometres) and short duration (often emplaced in less than a million years), terrestrial LIPs and their regional dyke swarms are linked to plumes arising from the deep mantle, and associated with the breakup of supercontinents. I propose to apply several key concepts from the terrestrial LIP record to intraplate magmatism on Venus: 1) Regional Stratigraphic Marker. Given their regional extent (up to >3000 km in radius) and short duration of emplacement, major dyke swarms on both Earth and Venus are an efficient regional stratigraphic marker, providing relative ages with respect to the units they cut and are crosscut by. 2) Unit Correlation. On Earth, erosion and plate tectonics have fragmented LIPs into widely separated units (dykes, sills, layered intrusions, remnant flood basalts, and associated carbonatites and kimberlites) that can be correlated using U-Pb geochronology. On Venus, it is predicted that units (volcanic edifices, canali, shield fields, dyke swarms, plains units) can similarly be grouped into discrete large-extent intraplate events (of LIP scale)-through detailed mapping of dyke swarms and their interactions with other units. 3) Hotspot tracks. As magmatic centres are identified and their relative ages are assessed it should be possible to identify any regional trends marking hotspot trails. 4) LIPs and rifting. Comparison of crosscutting relationships between dyke swarms and rifts provide insight into the timing and duration of rifting. This is particularly important given scale of rifts, up to 10,000 km long. * The methodology is to use remote sensing data (from the Magellan radar spacecraft and the current multi-sensor Venus Express spacecraft) and apply image processing methodologies used by the planetary science community as well as new approaches with a focus on the Beta-Atla-Themis (BAT) region.* The plan is to have one PhD and two MSc students, with the overall goal to produce a comprehensive assessment of magmatic history in the BAT region that integrates the dyke swarm (graben-fissure system) record with mapping of rifts and volcanic features in the region (volcanic edifices, large lava flow fields, large corona, shield plains, and canali).
在金星上,所有的玄武岩岩浆活动都是板内的,我建议通过应用为大火成岩省(LIP)这类陆地板内事件而开发的概念,为金星的BAT(Beta Atla Themis)地区的岩浆记录提供新的见解。蝙蝠是金星上最重要的区域,因为它的岩浆特征(羽状火山建筑物)的丰富性,裂谷的规模和相对年轻的年龄。*由于体积巨大(高达数百万立方千米)和持续时间短(通常不到一百万年),陆地嘴唇及其区域岩墙群与地幔深处产生的羽流联系在一起,并与超级大陆的解体有关。我建议将陆地LIP记录中的几个关键概念应用于金星上的板内岩浆作用:1)区域地层标志。考虑到它们的区域范围(半径可达3000公里)和侵位持续时间短,地球和金星上的主要岩墙群都是一个有效的区域地层标志,提供了它们切割和横切的单位的相对年龄。2)单元相关性。在地球上,侵蚀和板块构造将嘴唇碎裂成广泛分离的单元(岩墙、岩床、层状侵入体、残留的洪泛玄武岩以及相关的碳酸盐岩和金伯利岩),可以用U-Pb年代学进行对比。据预测,在金星上,通过绘制岩墙群及其与其他单元的相互作用的详细地图,可以类似地将单元(火山建筑物、运河、盾牌、岩墙群、平原单元)归类为离散的大范围板内事件(嘴唇规模)。3)热点跟踪。随着岩浆中心的确定和它们的相对年龄的评估,应该有可能确定标有热点踪迹的任何区域趋势。4)嘴唇和裂痕。对比岩墙群和裂谷之间的横切关系,可以洞察裂谷形成的时间和持续时间。鉴于裂谷的规模,这一点尤其重要,长达10,000公里。*方法是使用遥感数据(来自麦哲伦雷达航天器和目前的多传感器金星快车航天器),并应用行星科学界使用的图像处理方法以及新的方法,重点是Beta-Atla-Themis(BAT)地区。*计划有一名博士和两名理科学生,总体目标是对BAT地区的岩浆史进行全面评估,将堤坝群(地块-裂隙系统)记录与该地区的裂谷和火山地貌(火山大厦、大型熔岩流场、大日冕、盾牌平原和运河)的测绘结合起来。

项目成果

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Ernst, Richard其他文献

Periodicities in the emplacement of large igneous provinces through the Phanerozoic: Relations to ocean chemistry and marine biodiversity evolution
  • DOI:
    10.1016/j.gsf.2012.08.001
  • 发表时间:
    2013-05-01
  • 期刊:
  • 影响因子:
    8.9
  • 作者:
    Prokoph, Andreas;El Bilali, Hafida;Ernst, Richard
  • 通讯作者:
    Ernst, Richard
Large igneous provinces (LIPs), giant dyke swarms, and mantle plumes: significance for breakup events within Canada and adjacent regions from 2.5 Ga to the Present
  • DOI:
    10.1139/e10-025
  • 发表时间:
    2010-05-01
  • 期刊:
  • 影响因子:
    1.4
  • 作者:
    Ernst, Richard;Bleeker, Wouter
  • 通讯作者:
    Bleeker, Wouter
Indirect costs and cost-effectiveness analysis
  • DOI:
    10.1111/j.1524-4733.2006.00114.x
  • 发表时间:
    2006-07-01
  • 期刊:
  • 影响因子:
    4.5
  • 作者:
    Ernst, Richard
  • 通讯作者:
    Ernst, Richard

Ernst, Richard的其他文献

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{{ truncateString('Ernst, Richard', 18)}}的其他基金

Geological Testing of Global Warming Models on Venus
金星上全球变暖模型的地质测试
  • 批准号:
    RGPIN-2020-06408
  • 财政年份:
    2022
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Discovery Grants Program - Individual
Developing the full potential of the large igneous province (LIP) record for multi-commodity, multi-scale exploration targeting
充分发挥大型火成岩省 (LIP) 记录的多商品、多规模勘探目标的潜力
  • 批准号:
    523131-2017
  • 财政年份:
    2021
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Collaborative Research and Development Grants
Characterizing enigmatic tube-shaped igneous intrusions, called chonoliths, that host the majority of known magmatic sulfide deposits: contribution to exploration targeting
描述神秘的管状火成岩侵入体(称为岩棉岩)的特征,该岩体蕴藏着大多数已知的岩浆硫化物矿床:对勘探目标的贡献
  • 批准号:
    548618-2019
  • 财政年份:
    2021
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Alliance Grants
Targeted U-Pb dating of mafic-ultramafic intrusions, particularly those of economic interest, and characterizing their links with Large Igneous Provinces
对镁铁质-超镁铁质侵入体进行有针对性的 U-Pb 定年,特别是那些具有经济利益的侵入体,并描述它们与大型火成岩省的联系
  • 批准号:
    557056-2020
  • 财政年份:
    2021
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Alliance Grants
Geological Testing of Global Warming Models on Venus
金星上全球变暖模型的地质测试
  • 批准号:
    RGPIN-2020-06408
  • 财政年份:
    2021
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Discovery Grants Program - Individual
Developing the full potential of the large igneous province (LIP) record for multi-commodity, multi-scale exploration targeting
充分发挥大型火成岩省 (LIP) 记录的多商品、多规模勘探目标的潜力
  • 批准号:
    523131-2017
  • 财政年份:
    2020
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Collaborative Research and Development Grants
Characterizing enigmatic tube-shaped igneous intrusions, called chonoliths, that host the majority of known magmatic sulfide deposits: contribution to exploration targeting
描述神秘的管状火成岩侵入体(称为岩棉岩)的特征,该岩体蕴藏着大多数已知的岩浆硫化物矿床:对勘探目标的贡献
  • 批准号:
    548618-2019
  • 财政年份:
    2020
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Alliance Grants
Geological Testing of Global Warming Models on Venus
金星上全球变暖模型的地质测试
  • 批准号:
    RGPIN-2020-06408
  • 财政年份:
    2020
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Discovery Grants Program - Individual
Targeted U-Pb dating of mafic-ultramafic intrusions, particularly those of economic interest, and characterizing their links with Large Igneous Provinces
对镁铁质-超镁铁质侵入体进行有针对性的 U-Pb 定年,特别是那些具有经济利益的侵入体,并描述它们与大型火成岩省的联系
  • 批准号:
    557056-2020
  • 财政年份:
    2020
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Alliance Grants
Developing the full potential of the large igneous province (LIP) record for multi-commodity, multi-scale exploration targeting
充分发挥大型火成岩省 (LIP) 记录的多商品、多规模勘探目标的潜力
  • 批准号:
    523131-2017
  • 财政年份:
    2019
  • 资助金额:
    $ 2.19万
  • 项目类别:
    Collaborative Research and Development Grants

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