Geochemistry and Geochronology of Southern Norilsk Intrusions, SW Siberian Traps

geology, alteration, mineralization, petrogenesis, geochronology, geochemistry and airborne geophysics of kuh shah prospecting area, sw birjand

the kuh shah prospecting area is located in tertiary volcano-plutonic belt of the lut block. more than seventeen subvolcanic intermediate to acidic intrusive rocks, diorite to syenite in composition, were identified in the study area. the intrusions are related to hydrothermal alteration zones and contain argillic, propylitic, advanced argillic, silicified, quartz-sericite-pyrite, gossan and hy...

Geochemistry of Mesozoic Intrusions, Quesnel and Stikine Terranes

The re cord of arc magmatism is wide spread in the Ca na dian Cor dil lera (e.g., Armstrong, 1988; Woodsworth et al., 1991), par tic u larly in the Quesnel and Stikine ter ranes, where plutonic rocks re lated to Me so zoic arcs host most of the por phyry-style min eral de pos its in the Cor dil lera (An der son, 1985; Woodsworth et al., 1991; McMillan et al., 1995; Fig 1). Iso to pic char ac te...

Siberian Pine Decline and Mortality in Southern Siberian

Concentrations and History of Heavy Metals in Sediment Cores: Geochemistry and Geochronology Using 210Pb

This paper aims at assessing the concentrations of heavy metals and the isotopic composition of lead 210Pb in different fractions of sediment produced in the watershed that makes up the Mãe d'água dam and thus characterizing the distribution of metals along the sedimentary column and inferencing in the urbanization of the same process. Sample collection was carried out in June 2014; eight sedim...

petrology and geochemistry of khar-bash (western shahrood) and its relation ship to iron mineralization

منطقه مورد مطالعه در 23 کیلومتری جنوب غرب شهرستاشاهرود قرار دارد که در نقشه 100000/1 شاهرود قرار گرفته است.ناحیه مورد مطالعه در تقسیمات ساختاری ایران بخشی از زون البرز شرقی است . در طی سنوزوئیک این زون به شدت تحت تأثیر فازهای کوهزایی آلپی قرار گرفته و فعالیت های آتشفشانی انوسن در قسمت های غربی آن دیده می شود . از نظر ترکیب سنگ شناسی منطقه مورد مطالعه متنوع و بیشتر شامل سنگ های رسوبی مانند : آ...