The constituents of superunits Yarabamba and Challaviento in southern Peru, according to its composition of major elements, minor and trace and graphing various intrusive rocks geochemical diagrams show that both superunits have a degree of evolution by fractional crystallization They are sub-alkaline nature and high K calc-alkaline seriesThe rocks are both superunits metaluminous nature. The contents of Sr and Rb indicate a strong assimilation and differentiation of magmas. The enrichment of LILE (<100) elements and an impoverishment of less HFSE elements 10, negative anomalies of Nb and positive anomalies of Th, Ce, indicate that both groups are related to intrusive tectonic plate subduction context. The chemical content of the SuperDrive Yarabamba and Challaviento Ce / and Ga / Al and Y, Y + Nb and Rb and Nb are due to contamination during crustal thickening during the Cretaceous-N...

Los batolitos Cordillera Blanca (BCB) y Ambo-Oxapampa (BAO) consisten de granitos, tonalita, granodiorita y monzonita; son de naturaleza subalcalina, de las series calcoalcalinas de alto potasio, de carácter peraluminoso, con excepción del BCB que varía a metaluminoso. La relación SiO2 vs. Sm/Yb permite determinar que el BAO es más antiguo, seguido por el BCB. Los diagramas de variación tipo Harker presentan correlaciones negativas de la sílice con la mayoría de los óxidos, con excepción del Na y K que tienen correlaciones positivas. Geoquímicamente, se pueden clasificar provenientes de magmas félsicos. Los diagramas tectomagmáticos muestran que el BCB cae en el campo de granitos de arco volcánico, las rocas del BAO están en el límite de los campos de granito de arco volcánico e intraplaca y ambos caen en el campo de los granitos de arco continental.Los elementos traza y...

Las variedades litológicas predominantes de los dos batolitos son tonalita y granodiorita, provenientes de magmas félsicos. La relación SiO2 vs. Sm/Yb permite determinar que ambos son de la misma edad. Las rocas son de naturaleza subalcalina de las series calcoalcalinas de medio y alto potasio, con un carácter metaluminoso. Los diagramas de discriminación tectonomagmática indican que son granitos de arco volcánico. Los elementos traza y tierras raras también muestran características típicas de rocas asociadas a subducción. La profundidad de la fuente magmática es menor de 20 km y la ausencia de granate indica que no hay contaminación mantélica. Ambos provienen de magmas húmedos, el batolito Las Lomas es del tipo “I” y de la serie de la magnetita, asociado a elementos calcófilos y a la mineralización de Cu-Mo, el batolito Noque del tipo “S” y de la serie de la Ilm...

Los batolitos Cordillera Blanca (BCB) y Ambo-Oxapampa (BAO) consisten de granitos, tonalita, granodiorita y monzonita. Sonde naturaleza subalcalinas, de las series calcoalcalinas de alto potasio, de carácter peraluminoso, con excepción del BCB, quevaría a metaluminoso. La relación SiO2 vs Sm/Yb permite determinar que el BAO es más antiguo, seguido por el BCB. Losdiagramas de variación tipo Harker presentan correlaciones negativas de la sílice con la mayoría de los óxidos, con excepcióndel Na y K, que tienen correlaciones positivas. Geoquímicamente, se pueden clasificar provenientes de magmas félsicos. En losdiagramas tectomagmáticos, el BCB cae en el campo de granitos de arco volcánico y las rocas del BAO caen en el límite de loscampos de granito de arco volcánico e intraplaca y ambos caen en el campo de los granitos de arco continental. Los elementostraza y tierras raras...

The objective of the present investigation is to expand the geological knowledge and understanding of the geochemical composition of magmatism in the northern Peruvian Andes and to contribute geochemical knowledge in the different geotectonic environments in which igneous rocks are located. The San Lorenzo Formation is made up of mafic rocks and the Bocana of felsic rocks, both of which are sub-alkaline and of the low to medium K-alkaline series, representing a bimodal composition. Likewise, both are metaluminous and have a positive correlation with Na2O and K2O and a negative correlation with the rest of the other oxides. Positive Ce and Th anomalies can be seen in both formations that indicate a relationship to the plate subduction tectonic framework, to the field of Arco de Islas granitoids, to type “I” granitoids and to the field of Volcanic Arc. The depth of the magmatic source ...

This study presents the geochemical-statistical analysis of fourteen heavy metals in active sedimentary of the rivers Supe and Pativilca in which ones prevails the Calipuy and Casma Volcanic lithologies, and in a lower percentage the intrusive lithology of the Cost Batholith. Also the metals that have a normal distribution are Fe in the Pativilca River and Fe-Cr-As-Cu-Hg-Ni-Pb-V-Zn in Supe River. The average abundance shows that Zn and V are the most abundant metals, and Mo, Cd and Hg are showed in small quantities. In the correlation analysis for the Pativilca River, it is showed that the metals that are best correlated are Cd with Mo, Ni, Pb, Zn, which indicates that they all can have the same origin, while in the Supe River the metals have poor correlation which indicates that they do not have the same origin, with the exeption of the Cu with Mo and Fe with V and W. The Principal Comp...

The constituents of Toquepala and Barroso Groups in southern Peru, according to its composition of major, minor and trace and graphing various geochemical diagrams volcanic rocks show that both groups have a degree of evolution by fractional crystallization, are the series of high-K calc-alkaline, subalkaline and nature. The contents of Sr and Rb indicate a strong assimilation and differentiation of magmas. The enrichment of LILE (<100) and a depletion of elements smaller than 10 elements HFSE negative anomalies of Nb and positive anomalies of Th, Ce, indicate that both groups are related to volcanic tectonic setting of subduction. The chemical contents of Toquepala Group are due to contamination during crustal thickening during the Cretaceous. Volcanic Group of Toquepala are peraluminous nature, and shows a differentiation that mostly covers the area of ​​rhyolite, dacite / andes...

The present study includes the geochemical-statistical analysis of fourteen heavy metals in active sediments of the Huaura and Chancay rivers, in which the intrusive lithologies of the Batolito de la Costa predominate, and to a lesser extent the lithologies of the Calipuy and Volcánico Casma groups. Likewise, the metals that have a normal distribution are Fe and Cr and the lognormal distribution As-Cu-Cd-Hg-Mo-Ni-Pb-Sb-Sn-V-W-Zn. The average abundance shows that Zn, V, Cr, Pb, Cu are the most abundant metals and Mo, Cd and Hg occurs in small amounts. Pearson's correlation analysis in the Huaura River, the metals that best correlate are As with Cd, Cu, Pb, W, Zn and Cd with Cu and Zn, which indicate that it could have the same origin, while in the Río Chancay the metals do not have a good correlation, which would indicate that they do not have a common origin, except for the Cd with Zn ...

The current geochemnical-statistical study involves thirty-seven chemistry elements involving fourteen of these called heavy metals such As, Cd, Cr, Cu, Fe, Hg, Mo, Ni, Pb, Sb, Sn, V, W, Zn collected in active stream sediments from Chilca, Mala and Omas rivers located in the department of Lima, Peru. The filonean mineralization ocurrences of Cu, Pb, Zn, the abundance of trace elements and the correlation multivariable of the elements in the three rivers reflects the prevailing economic mineralization, in the Chilca river Zn, Cd, Pb in Mala river Cu, Co, Cr and in the Omas river Cu, Pb, Zn. The other elements are not pathfinder of this mineralizations because of the absence of good correlation between them, suggesting different source, at the morfology of the deposit and the erosion level of the surface. It has been determined that Chilca River has exceeded permissible levels in As and ta...

The geochemistry-statistical study involve fourteen heavy metals/metalloids As-Cd-Cr-Cu-Fe-Hg-Mo-Ni-Pb-Sb-Sn-V-W-Zn in stream sediments from Chillon, Rímac and Lurin rivers of Lima City. These are potentially toxic metals at health in a human populations and the biota had to be research on the solution and suspension fractions, but not the behaviour from the detritic material. Have found in the Rimac river high levels of abundance Zn, Pb, As, W, Sn, Fe, Sb, Mo, Cd; in Chillón River V, Cu, Ni, Hg and in Lurin river, only Cr. At compare with the levels established in te Table Holland , the Rimac River is contamined in As, Cu, Hg, Zn, y Sb, in Chillon river V, Cu, Ni, Hg and the Lurin river only As, Sb. According to the secondary dispersion of metales determined that lower and medium course of Chillon and Rimac rivers is concentrate lot of metals, but is not the same in Lurin river, becau...

El presente estudio comprende el análisis geoquímico-estadístico de catorce metales pesados en sedimentos activos de los ríos Huaura y Chancay en los cuales predominan las litologías intrusivas del Batolito de la Costa y en menor porcentaje las litologías del Grupo Calipuy y Volcánico Casma. Asimismo los metales que tienen una distribución normal son Fe y Cr y distribución lognormal As-Cu-Cd-Hg-Mo-Ni-Pb-Sb-Sn-V-W-Zn. La abundancia media muestra que el Zn, V, Cr, Pb, Cu son los metales más abundante y el Mo, Cd y Hg se presenta en pequeñas cantidades. El análisis de correlación de Pearson en el Río Huaura los metales que mejor se correlacionan son el As con Cd, Cu, Pb, W, Zn y Cd con Cu y Zn, que nos indican que podría tener el mismo origen, mientras que en el Río Chancay los metales no tienen buena correlación lo que indicarían que no tienen un origen común, salvo el C...

The current geochemnical-statistical study involves thirty-seven chemistry elements involving fourteen of these called heavy metals such As, Cd, Cr, Cu, Fe, Hg, Mo, Ni, Pb, Sb, Sn, V, W, Zn collected in active stream sediments from Chilca, Mala and Omas rivers located in the department of Lima, Peru. The filonean mineralization ocurrences of Cu, Pb, Zn, the abundance of trace elements and the correlation multivariable of the elements in the three rivers reflects the prevailing economic mineralization, in the Chilca river Zn, Cd, Pb in Mala river Cu, Co, Cr and in the Omas river Cu, Pb, Zn. The other elements are not pathfinder of this mineralizations because of the absence of good correlation between them, suggesting different source, at the morfology of the deposit and the erosion level of the surface. It has been determined that Chilca River has exceeded permissible levels in As and ta...

The geochemistry-statistical study involve fourteen heavy metals/metalloids As-Cd-Cr-Cu-Fe-Hg-Mo-Ni-Pb-Sb-Sn-V-W-Zn in stream sediments from Chillon, Rímac and Lurin rivers of Lima City. These are potentially toxic metals at health in a human populations and the biota had to be research on the solution and suspension fractions, but not the behaviour from the detritic material. Have found in the Rimac river high levels of abundance Zn, Pb, As, W, Sn, Fe, Sb, Mo, Cd; in Chillón River V, Cu, Ni, Hg and in Lurin river, only Cr. At compare with the levels established in te Table Holland , the Rimac River is contamined in As, Cu, Hg, Zn, y Sb, in Chillon river V, Cu, Ni, Hg and the Lurin river only As, Sb. According to the secondary dispersion of metales determined that lower and medium course of Chillon and Rimac rivers is concentrate lot of metals, but is not the same in Lurin river, becau...

This study presents the geochemical-statistical analysis of fourteen heavy metals in active sedimentary of the rivers Supe and Pativilca in which ones prevails the Calipuy and Casma Volcanic lithologies, and in a lower percentage the intrusive lithology of the Cost Batholith. Also the metals that have a normal distribution are Fe in the Pativilca River and Fe-Cr-As-Cu-Hg-Ni-Pb-V-Zn in Supe River. The average abundance shows that Zn and V are the most abundant metals, and Mo, Cd and Hg are showed in small quantities. In the correlation analysis for the Pativilca River, it is showed that the metals that are best correlated are Cd with Mo, Ni, Pb, Zn, which indicates that they all can have the same origin, while in the Supe River the metals have poor correlation which indicates that they do not have the same origin, with the exeption of the Cu with Mo and Fe with V and W. The Principal Comp...

The constituents of Toquepala and Barroso Groups in southern Peru, according to its composition of major, minor and trace and graphing various geochemical diagrams volcanic rocks show that both groups have a degree of evolution by fractional crystallization, are the series of high-K calc-alkaline, subalkaline and nature. The contents of Sr and Rb indicate a strong assimilation and differentiation of magmas. The enrichment of LILE (<100) and a depletion of elements smaller than 10 elements HFSE negative anomalies of Nb and positive anomalies of Th, Ce, indicate that both groups are related to volcanic tectonic setting of subduction. The chemical contents of Toquepala Group are due to contamination during crustal thickening during the Cretaceous. Volcanic Group of Toquepala are peraluminous nature, and shows a differentiation that mostly covers the area of ​​rhyolite, dacite / andes...

The constituents of superunits Yarabamba and Challaviento in southern Peru, according to its composition of major elements, minor and trace and graphing various intrusive rocks geochemical diagrams show that both superunits have a degree of evolution by fractional crystallization They are sub-alkaline nature and high K calc-alkaline seriesThe rocks are both superunits metaluminous nature. The contents of Sr and Rb indicate a strong assimilation and differentiation of magmas. The enrichment of LILE (<100) elements and an impoverishment of less HFSE elements 10, negative anomalies of Nb and positive anomalies of Th, Ce, indicate that both groups are related to intrusive tectonic plate subduction context. The chemical content of the SuperDrive Yarabamba and Challaviento Ce / and Ga / Al and Y, Y + Nb and Rb and Nb are due to contamination during crustal thickening during the Cretaceous-N...

Los batolitos Cordillera Blanca (BCB) y Ambo-Oxapampa (BAO) consisten de granitos, tonalita, granodiorita y monzonita; son de naturaleza subalcalina, de las series calcoalcalinas de alto potasio, de carácter peraluminoso, con excepción del BCB que varía a metaluminoso. La relación SiO2 vs. Sm/Yb permite determinar que el BAO es más antiguo, seguido por el BCB. Los diagramas de variación tipo Harker presentan correlaciones negativas de la sílice con la mayoría de los óxidos, con excepción del Na y K que tienen correlaciones positivas. Geoquímicamente, se pueden clasificar provenientes de magmas félsicos. Los diagramas tectomagmáticos muestran que el BCB cae en el campo de granitos de arco volcánico, las rocas del BAO están en el límite de los campos de granito de arco volcánico e intraplaca y ambos caen en el campo de los granitos de arco continental.Los elementos traza y...

Las variedades litológicas predominantes de los dos batolitos son tonalita y granodiorita, provenientes de magmas félsicos. La relación SiO2 vs. Sm/Yb permite determinar que ambos son de la misma edad. Las rocas son de naturaleza subalcalina de las series calcoalcalinas de medio y alto potasio, con un carácter metaluminoso. Los diagramas de discriminación tectonomagmática indican que son granitos de arco volcánico. Los elementos traza y tierras raras también muestran características típicas de rocas asociadas a subducción. La profundidad de la fuente magmática es menor de 20 km y la ausencia de granate indica que no hay contaminación mantélica. Ambos provienen de magmas húmedos, el batolito Las Lomas es del tipo “I” y de la serie de la magnetita, asociado a elementos calcófilos y a la mineralización de Cu-Mo, el batolito Noque del tipo “S” y de la serie de la Ilm...

Los batolitos Cordillera Blanca (BCB) y Ambo-Oxapampa (BAO) consisten de granitos, tonalita, granodiorita y monzonita. Sonde naturaleza subalcalinas, de las series calcoalcalinas de alto potasio, de carácter peraluminoso, con excepción del BCB, quevaría a metaluminoso. La relación SiO2 vs Sm/Yb permite determinar que el BAO es más antiguo, seguido por el BCB. Losdiagramas de variación tipo Harker presentan correlaciones negativas de la sílice con la mayoría de los óxidos, con excepcióndel Na y K, que tienen correlaciones positivas. Geoquímicamente, se pueden clasificar provenientes de magmas félsicos. En losdiagramas tectomagmáticos, el BCB cae en el campo de granitos de arco volcánico y las rocas del BAO caen en el límite de loscampos de granito de arco volcánico e intraplaca y ambos caen en el campo de los granitos de arco continental. Los elementostraza y tierras raras...

The objective of the present investigation is to expand the geological knowledge and understanding of the geochemical composition of magmatism in the northern Peruvian Andes and to contribute geochemical knowledge in the different geotectonic environments in which igneous rocks are located. The San Lorenzo Formation is made up of mafic rocks and the Bocana of felsic rocks, both of which are sub-alkaline and of the low to medium K-alkaline series, representing a bimodal composition. Likewise, both are metaluminous and have a positive correlation with Na2O and K2O and a negative correlation with the rest of the other oxides. Positive Ce and Th anomalies can be seen in both formations that indicate a relationship to the plate subduction tectonic framework, to the field of Arco de Islas granitoids, to type “I” granitoids and to the field of Volcanic Arc. The depth of the magmatic source ...