Spatial distribution of cones and satellite-detected lineaments in the Pali Aike Volcanic Field (southernmost Patagonia): insights into the tectonic setting of a Neogene rift system
作者: Francesco MazzariniMassimo D’Orazio
作者单位: 1Istituto di Geoscienze e Georisorse, C.N.R., Via S. Maria, 53, 56126 Pisa, Italy
2Dipartimento di Scienze della Terra, Università di Pisa, Via S. Maria, 53, 56126 Pisa, Italy
刊名: Journal of Volcanology and Geothermal Research, 2003, Vol.125 (3), pp.291-305
来源数据库: Elsevier Journal
DOI: 10.1016/S0377-0273(03)00120-3
关键词: monogenetic conessatellite lineamentsself-similar clusteringtectonicsNeogenePatagonia
原始语种摘要: Abstract(#br)The relationships between the distribution and morphometric features of eruptive structures (scoria and spatter cones, maar, tuff rings) and the fracture network were investigated in the Pliocene–Quaternary Pali Aike Volcanic Field (southernmost Patagonia, Argentina–Chile). The alkali basaltic/basanitic magmas which erupted in this area have nearly primary magma compositions and often bear mantle xenoliths; hence magma ascent from deep-seated reservoirs was probably very fast, with no significant stagnation at crustal levels. Field surveys and satellite image analysis led to the identification of up to 467 eruptive structures and four main NW–SE, NE–SW, E–W and N–S fracture systems. The spatial distribution of eruptive cones and fractures was investigated through the...
全文获取路径: Elsevier  (合作)

  • clustering 聚类
  • distribution 分布
  • Neogene 晚第三纪
  • tectonic 构造的
  • eruptive 火成的
  • fracture 断口
  • significant 有效的
  • similarity 相似性
  • monogenetic 单成的
  • system