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Distribution of Eruptive Centers on Top of Large Shield Volcanoes in the Inner Solar System: General Classification and Glimpses of Their Subvolcanic Structure
Journal of Geophysical Research: Planets ( IF 4.8 ) Pub Date : 2020-11-11 , DOI: 10.1029/2020je006431
Rocío Jacobo‐Bojórquez 1 , Edgardo Cañón‐Tapia 1
Affiliation  

Processes that occur beneath a planetary surface control the spatial distribution of volcanic features in a volcanic zone. Volcanic vents frequently form clusters and alignments controlled by the lithospheric structure and the stress field. Previous works have determined the influence of stress at different scales in a volcanic area. In this work, we analyze the distribution of volcanic vents on top of shield volcanoes on four different bodies of the Solar System: Pinacate (Earth), Mauna Kea (Earth), Marius Hills (Moon), Mons Rümker (Moon), Olympus Mons (Mars), Kunapipi Mons (Venus), and Var Mons (Venus), to identify characteristics of the volcanic systems and compare their spatial distribution patterns in order to determinate similarities and differences. The Gaussian kernel is the base of the analysis; this method is an exploration tool that generates a sequence of probability density functions (PDFs). Thus, we have constrained the predominant orientations of dikes and the shape, orientation, and location at depth of the magmatic source. Based on our results, we extend the classification of shield volcanoes divided into two main groups: (a) those that grow only under the influence of magmatic stress fields (Marius Hills, Olympus Mons, and Mons Rümker) and (b) those that grow under the influence of external stress fields (Pinacate), to other bodies of the Solar System. Some shield volcanoes present characteristics from both groups (Mauna Kea, Kunapipi Mons, and Var Mons).

中文翻译:

太阳系内大型盾构火山顶部喷发中心的分布:亚火山结构的一般分类和瞥见

发生在行星表面之下的过程控制着火山区内火山特征的空间分布。火山喷口经常形成由岩石圈结构和应力场控制的团簇和排列。先前的工作已经确定了应力对火山区不同尺度的影响。在这项工作中,我们分析了太阳系的四个不同物体上的盾构火山顶部的火山喷口分布:皮纳卡特(地球),莫纳克亚(地球),马里乌斯山(月亮),蒙斯·吕克(月亮),奥林巴斯·蒙斯(火星),库纳皮皮·蒙斯(维纳斯)和瓦尔·蒙斯(维纳斯),以识别火山系统的特征并比较其空间分布格局,以便确定相似点和不同点。高斯核是分析的基础;此方法是一种探索工具,可生成一系列概率密度函数(PDF)。因此,我们限制了堤防的主要方向以及岩浆源深度的形状,方向和位置。根据我们的结果,我们将盾构火山的分类扩展为两个主要类别:(a)仅在岩浆应力场(Marius Hills,Olympus Mons和MonsRümker)的影响下生长的那些,以及(b)生长的那些在外部应力场(Pinacate)的影响下,对太阳系的其他物体产生影响。一些盾构火山呈现出两组的特征(冒纳凯阿火山,库纳皮皮蒙斯和瓦尔蒙斯)。和岩浆源深处的位置。根据我们的结果,我们将盾构火山的分类扩展为两个主要类别:(a)仅在岩浆应力场(Marius Hills,Olympus Mons和MonsRümker)的影响下生长的那些,以及(b)生长的那些在外部应力场(Pinacate)的影响下,对太阳系的其他物体产生影响。一些盾构火山呈现出两组的特征(冒纳凯阿火山,库纳皮皮蒙斯和瓦尔蒙斯)。和岩浆源深处的位置。根据我们的结果,我们将盾构火山的分类扩展为两个主要类别:(a)仅在岩浆应力场(Marius Hills,Olympus Mons和MonsRümker)的影响下生长的那些,以及(b)生长的那些在外部应力场(Pinacate)的影响下,对太阳系的其他物体产生影响。一些盾构火山呈现出两组的特征(冒纳凯阿火山,库纳皮皮蒙斯和瓦尔蒙斯)。
更新日期:2020-12-15
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