Gravity and magnetic anomalies of ecuadorian margin: Implications in the deep structure of the subduction of Nazca Plate and Andes Cordillera
作者: J. TamayJ. Galindo-ZaldívarY.M. MartosJ. Soto
作者单位: 1Departamento de Geología y Minas e Ingeniería Civil, Universidad Técnica Particular de Loja, San Cayetano Alto, Apartado postal 11-01-608. Ecuador
2Departamento de Geodinámica. Facultad de Ciencias. Universidad de Granada. 18071. Granada, Spain
3Instituto Andaluz de Ciencias de la Tierra (CSIC - Univ. de Granada). 18071. Granada, Spain
4Department of Astronomy, University of Maryland College Park, College Park, MD 20742, USA
5Planetary Magnetospheres Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
刊名: Journal of South American Earth Sciences, 2018, Vol.85 , pp.68-80
来源数据库: Elsevier Journal
DOI: 10.1016/j.jsames.2018.04.020
关键词: Satellite gravity and magnetic anomaliesField gravity surveysSeismicityEcuadorian marginAndes cordilleraCrustal tectonic structure and architecture
英文摘要: Abstract(#br)To improve our knowledge of the deep structure of the Ecuadorian continental margin we combined satellite gravity and magnetic anomalies with the gravity field data obtained in land surveys, integrated as well as with seismicity and geological data. Satellite Bouguer anomalies are elongated, arched and parallel to the continental margin. The lows are related to the Andes Cordillera, while relative westward parallel highs correspond to the Cordillera Costanera and the Talara-Tumbes Cordilleras. Smooth and irregular positive anomalies characterize Oriente Basin. The oceanic Nazca Plate shows negative relative to the sounding normal oceanic crust, ENE-WSW gravity anomalies highlighting the Carnegie Ridge, surrounded by highs corresponding to standard oceanic lithosphere. New...
全文获取路径: Elsevier  (合作)
影响因子:1.533 (2012)

  • subduction 俯冲
  • Andes 安第斯山脉
  • margin 边限
  • structure 构造
  • magnetic 磁的