page_title: Rubielos de la Cérida impact structure
hierarchical_section_title: Rubielos de la Cérida impact structure
caption_attribution_description: English: Impact feature: Shock metamorphism in the Rubielos de la Cérida impact structure - diaplectic glass and three sets of planar deformation features (PDF) in quartz. Thin section micrograph {field is 280 µm wide}.
context_page_description: The c. 80 km x 40 km sized Rubielos de la Cérida impact structure is located in Aragon, northeast Spain, north of Teruel and is considered a companion of the Azuara impact structure and part of a large multiple impact event, the Azuara impact event, that from stratigraphic considerations and paleontological dating happened in the Upper Eocene or Oligocene. The name is attributed to the village of Rubielos de la Cérida located in the central uplift of the most northerly part of the structure.
  Originally the Rubielos de la Cérida structure was limited to and described as a 40 km-diameter circular impact crater with a prominent central uplift but is now considered to comprise a whole crater chain forming an impact basin accompanied by a central uplift chain. In the eastern part, the morphology of the original basin is in parts buried beneath post-impact Neogene sediments.
  Conventionally, the impact basin is considered to represent tectonic structures, the Jiloca-Calatayud graben and the Alfambra-Teruel graben.
context_section_description: The c. 80 km x 40 km sized Rubielos de la Cérida impact structure (impact basin, resp.) is located in Aragon, northeast Spain, north of Teruel and is considered a companion of the Azuara impact structure and part of a large multiple impact event, the Azuara impact event, that from stratigraphic considerations and paleontological dating happened in the Upper Eocene or Oligocene (roughly 30 - 40 Mill. years ago). The name is attributed to the village of Rubielos de la Cérida located in the central uplift of the most northerly part of the structure.
  Originally the Rubielos de la Cérida structure was limited to and described as a 40 km-diameter circular impact crater with a prominent central uplift but is now considered to comprise a whole crater chain forming an impact basin accompanied by a central uplift chain. In the eastern part, the morphology of the original basin is in parts buried beneath post-impact Neogene sediments.
  Conventionally, the impact basin is considered to represent tectonic structures, the Jiloca-Calatayud graben and the Alfambra-Teruel graben. Since a tectonic graben is typically characterized by tensional features, the common interpretation meets basic difficulties with the structurally dominant compressive style that was observed.
caption: Impact feature: Shock metamorphism in the Rubielos de la Cérida impact structure - diaplectic glass and three sets of planar deformation features (PDF) in quartz. Thin section micrograph {field is 280 µm wide}.
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