page_title: Purico complex
hierarchical_section_title: Purico complex
caption_attribution_description: English: The Cerro Negro dome and the Cerros de Macón stratovolcano are the western most part of the Purico Volcanic complex, a pyroclastic shield made up by several stratovolcanoes, lava domes and a maar.
context_page_description: The Purico complex is a Pleistocene volcanic complex in Chile close to Bolivia, formed by an ignimbrite, several lava domes and stratovolcanoes and one maar. It is one of the Chilean volcanoes of the Andes, and more specifically the Chilean segment of the Central Volcanic Zone, one of the four volcanic belts which make up the Andean Volcanic Belt. The Central Volcanic Zone spans Peru, Bolivia, Chile and Argentina and includes 44 active volcanoes as well as the Altiplano-Puna volcanic complex, a system of large calderas and ignimbrites of which Purico is a member of. Licancabur to the north, La Pacana southeast and Guayaques to the east are separate volcanic systems.
  The Purico complex consists of a shield shaped volcanic structure consisting of the Purico ignimbrite and a number of secondary volcanoes that are emplaced on this volcanic shield. During the ice ages, the shield was in part covered by glaciers which have left moraines. Purico is the source of the Purico ignimbrite, a moderately large ignimbrite with a volume of about 80–100 cubic kilometres. After the emplacement of the Purico ignimbrite, a number of lava domes and stratovolcanoes developed on the ignimbrite shield.
context_section_description: The Purico complex is a Pleistocene volcanic complex in Chile close to Bolivia, formed by an ignimbrite, several lava domes and stratovolcanoes and one maar. It is one of the Chilean volcanoes of the Andes, and more specifically the Chilean segment of the Central Volcanic Zone, one of the four volcanic belts which make up the Andean Volcanic Belt. The Central Volcanic Zone spans Peru, Bolivia, Chile and Argentina and includes 44 active volcanoes as well as the Altiplano-Puna volcanic complex, a system of large calderas and ignimbrites of which Purico is a member of. Licancabur to the north, La Pacana southeast and Guayaques to the east are separate volcanic systems.
  The Purico complex consists of a shield shaped volcanic structure consisting of the Purico ignimbrite and a number of secondary volcanoes that are emplaced on this volcanic shield. During the ice ages, the shield was in part covered by glaciers which have left moraines. Purico is the source of the Purico ignimbrite, a moderately large ignimbrite with a volume of about 80–100 cubic kilometres (19–24 cu mi). After the emplacement of the Purico ignimbrite, a number of lava domes and stratovolcanoes developed on the ignimbrite shield. The maar of Alitar is still fumarolically active. In historical times, sulfur was mined on Purico, and presently the Llano de Chajnantor Observatory lies on the ignimbrite shield.
caption: The southwest part of the complex is formed by the cinder cone Cerro Negro and the stratovolcano Cerros de Macón.
exif: {"Image ImageDescription": "[#Beginning of Shooting Data Section]\nNikon D40\nFocal Length: 35mm\nOptimize Image: Custom\nColor Mode: Mode IIIa (sRGB)\nLong Exposure NR: Off\nHigh ISO NR: Off\n2008/02/21 17:26:17.5\nExposure Mode: Aperture Priority\nWhite Balance: Auto\nTone Comp.: Auto\nCompressed RAW (12-bit)\nMetering Mode: Multi-Pattern\nAF Mode: AF-S\nHue Adjustment: 0\u00b0\n1/100 sec - F/16\nFlash Sync Mode: Not Attached\nSaturation: Auto\nColor\nExposure Comp.: -0.3 EV\nSharpening: Medium high\nLens: 17-35mm F/2.8 D\nSensitivity: ISO 200\nImage Comment: (c) gerardprins.com (562) 7587209   \n[#End of Shooting Data Section]", "Image Make": "NIKON CORPORATION", "Image Model": "NIKON D40", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS3 Windows", "Image DateTime": "2010:03:27 01:09:59", "Image Artist": "Gerard Prins", "Image Copyright": "\u00a9 gerard prins", "Image ExifOffset": "864", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1562", "Thumbnail JPEGInterchangeFormatLength": "5230", "EXIF ExposureTime": "1/100", "EXIF FNumber": "16", "EXIF ExposureProgram": "Aperture Priority", "EXIF ISOSpeedRatings": "200", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2008:02:21 17:26:17", "EXIF DateTimeDigitized": "2008:02:21 17:26:17", "EXIF ShutterSpeedValue": "415241/62500", "EXIF ApertureValue": "8", "EXIF ExposureBiasValue": "-1/3", "EXIF MaxApertureValue": "3", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire", "EXIF FocalLength": "35", "EXIF SubSecTime": "50", "EXIF SubSecTimeOriginal": "50", "EXIF SubSecTimeDigitized": "50", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "900", "EXIF ExifImageLength": "489", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CVAPattern": "[2, 0, 2, 0, 2, 1, 1, 0]", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF FocalLengthIn35mmFilm": "52", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "None", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Hard", "EXIF SubjectDistanceRange": "0"}