El Pórfido de Cobre Molibdeno Sayta está ubicado dentro del complejo Batolito Andahuaylas Yauri que intruye a las areniscas y cuarcitas de la Formación Huintuyo permitiendo la depositación de minerales con contenidos metálicos de importancia como cobre, molibdeno, oro y otros.
Durante la investigación del pórfido de Cu-Mo Sayta, se ha reconocido varias fases de intrusión magmática, siendo las fases tempranas las que conforman los sulfuros primarios con leyes relativamente altas, mientras que las fases posteriores son estériles o presentan leyes bajas.
El rasgo característico importante para la identificación de este pórfido ha sido básicamente la alteración mineral en superficie, (zona de óxidos) reconocidas durante el muestreo geoquímico y las fotografías aéreas como herramientas que han ayudado a comprender la forma del depósito.
El trabajo de investigación describe la génesis del yacimiento y su emplazamiento en las arenisca y cuarcitas, sus implicancias geológicas y su relación con los demás pórfidos existentes en el Batolito Yauri-Andahuaylas.
Las cuarcitas de la formación Huintuyo, no presentan permeabilidad ni porosidad primaria salvo las areniscas, por lo que se atribuye la presencia del mineral al relleno en micro-fracturas producidas por efectos tectónicos, sin embargo la presencia de niveles arcillosos y lutáceos permitió de entrampe de mineral durante la migración de las soluciones mineralizantes, razón por lo que, se asume que la mineralización de cobre, se ha depositado debajo de estos niveles y algunos tramos con óxidos de cobre, prácticamente han migrado aprovechando fallas y fracturas.
De acuerdo a los resultados de la investigación realizada se conoce que el emplazamiento del pórfido Cu-Mo Sayta enriquecido en cuarcitas, es una evidencia de los nuevos criterios de exploración en cuarcitas asociados al Batolito Yauri Andahuaylas. También hay depósitos de pórfidos de cobre molibdeno reconocido en Cotabambas, Tintaya, Los Chancas, Morasayhuas, Antilla, Yanque, Sayta y otros que confirman el potencial del Batolito Andahuaylas-Yauri convirtiéndolo en un metalotecto de importancia. / --- The Copper Molybdenum Porphyry Sayta is emplaced within the complex Andahuaylas Yauri Batholith, intrudes the sandstone and quartzite of Huintuyo Formation allowing the deposition of metallic mineral content of economic importance as copper, molybdenum, gold et al.
During the investigation of Cu-Mo porphyry Sayta has been recognized several phases of magmatic intrusion, in the early stages of primary sulphide comprising relatively high grade, while in later phases are sterile or have low grade.
The important feature of this identification has been mostly porphyry alteration mineral surface (oxide zone) recognized during the geochemical sampling and aerial photographs as tools that have helped to understand how the deposit. The research paper describes the genesis of the deposit and its location in the quartzite, its geological implications and their relationship with others existing in the Batholith porphyries Yauri-Andahuaylas.
The quartzite Murco formation, have no porosity or permeability which is attributed to the presence of mineral fillers in micro-fractures caused by tectonic effects, however the presence of clay and siltstone permitted levels of mineral trapping during migration mineralizing solutions, and therefore it is assumed that the copper mineralization has been placed below these levels and some sections with copper oxides, have almost migrated advantage faults and fractures.
According to the results of research carried out is known that the location of porphyry Cu-Mo enriched sandstone and quartzite Sayta is evidence of new exploration criteria associated Andahuaylas Yauri Batholith.
According to fieldwork and previous studies by different companies confirm that the Andahuaylas-Yauri batholith is emplaced during the middle Eocene to early Oligocene (~ 48-32 Ma, with a surface area of ~ 130 km 300x placed on clastic rocks and carbonate (Example: Murco Group, Yura Group, Ferrobamba Formation) whose age spans the Jurassic to Cretaceous.
It is also known that all porphyry Cu-Mo-Au are generated from calcic alkaline and alkaline magmas (R. Sillitoe 2009, SEG), therefore Sayta porphyry is located in the batholith Yauri - Andahuaylas, in 2nd and 3rd phase of its evolution or magmatic pulse events belonging to the Inca orogenic.
In relation to the evolution of sedimentary basins, magmatic pulsations and tectonic events in orogenic cycle, describe metal deposits and polemics its genesis.
The discussion is primarily genetic in field research, data collected from studies of fluid inclusions and radiometric dates for defining the mineralized trachi-andesite porphyry deposit associated with the quartzite of the Lower Cretaceous Mesozoic, origin, composition and temperature mineralizing fluids. Porphyry copper molybdenum deposits recognized in Cotabambas, Tintaya, Chancas, Morasayhuas, Antilla, Yanque, Sayta and others confirm the potential of Andahuaylas-Yauri Batholith.
| Identifer | oai:union.ndltd.org:Cybertesis/oai:cybertesis.unmsm.edu.pe:cybertesis/3287 |
| Date | January 2012 |
| Creators | Castro Medrano, Eugenio |
| Contributors | Lau L., María |
| Publisher | Universidad Nacional Mayor de San Marcos |
| Source Sets | Universidad Nacional Mayor de San Marcos - SISBIB PERU |
| Language | Spanish |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Source | Universidad Nacional Mayor de San Marcos, Repositorio de Tesis - UNMSM |
| Rights | info:eu-repo/semantics/openAccess |
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