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The monogenetic Huambo volcanic field lies SSE of the Andahua-Orcocampo volcanic field, west of Sabancaya volcano. The Huambo volcanic field is divided into two segments. The southern area contains several cinder cones and associated lava flows, some of which are inferred to be of early to late-Holocene age on the basis of morphological criteria. The northern part contains a single vent, the Cerro Keyocc cinder cone, which produced an extensive lava field that blanketed a plateau to the west during an eruption radiocarbon dated at about 2650 years ago.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|0700 BCE ± 50 years||Unknown||Confirmed||Radiocarbon (uncorrected)||Cerro Keyocc|
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Keyocc, Cerro||Pyroclastic cone|
|Marbas Chico||Pyroclastic cone|
|Marbas Grande, Cerro||Pyroclastic cone|
|The dark-brown area just north of the elongated black lake at the center of this NASA Landsat image is a lava flow from the northern segment of the Huambo volcanic field. The flows were erupted from the Cerro Keyocc cinder cone about 2650 years ago. The southern part of the volcanic field, the dark-brown area at the SW part of this image, contains several cinder cones and associated lava flows, some of which are inferred to be of early to late-Holocene age. The large glacier-covered massif to the east is the Sabancaya volcanic complex.
NASA Landsat7 image (worldwind.arc.nasa.gov).
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.
Delacor A, Gerbe M-C, Thouret J-C, Worner G, Paquereau-Lebti P, 2007. Magma evolution of Quaternary minor volcanic centres in southern Peru, Central Andes. Bull Volc, 69: 581-608.