نتایج جستجو برای: sargaz granitic intrusion

تعداد نتایج: 19974  

2010
I. M. H. R. Antunes A. M. R. Neiva M. M. V. G. Silva

Five granitic rocks, concentrically disposed from core to rim, were distinguished in the Castelo Branco pluton. U-Pb-Th electron microprobe monazite ages from granitic rocks are similar and ranging between 297-303 Ma. The granitic rocks from Castelo Branco pluton are 310 ± 1 Ma old, obtained by U-Pb (ID-TIMS) in separated zircon and monazite crystals, indicating a similar emplacement age for al...

Journal: :Eksplorium: buletin pusat pengembangan bahan galian nuklir 2022

Granitic rocks are widely distributed in Sumatra and surrounding areas. These granitoids classified into several granite provinces of Southeast Asia with different intrusion processes specific characteristics. This paper aims to review the granitic describe opportunities associated it. Granite used manufacture cultural heritage, works art, ornaments because their weathering resistance, color di...

2003
Donald B. Dingwell D. B. DINGWELL

The physical behavior of silicate melts during the final stages of intrusion in the earth's crust are poorly understood. In particular, the low temperature limit of igneous petrogenesis is poorly constrained. The extreme differentiates of granitic magmatism that lead to pegmatite genesis span a very large range of composition not normally considered to be within the domain of igneous melt compo...

2004
XIAN-HUA LI DUNYI LIU MIN SUN YING LIU

The supergiant Shizhuyuan W–Sn–Bi–Mo deposit is hosted by the Qianlishan granite, a small, highly fractionated granitic pluton (∼ 10 km) with multiple phases of intrusions within the Early Yanshanian granitoid province of SE China. Strong alteration of skarn and greisen that formed in the contact zone between the first and second phases of granite intrusions and Devonian limestone is responsibl...

2012
Xue-Ming Yang

This contribution illustrates the procedures of calculating rare earth element (REE) patterns of magmatic fluids in equilibrium with granitic melts. These patterns can then be compared to those of altered and (or) mineralized rocks in order to investigate the source of the ore-fluids. This technique is applied to the Lake George Sb-Au-W-Mo mineral deposit, New Brunswick, Canada. The results sug...

2012
Adi Maulana Kotaro Yonezu

Petrology and geochemical characteristics of granitic rocks from South Sulawesi, especially from Polewaliand Masamba area are presented in order to elucidate their origin of magma and geodynamic setting. The granitic rocks in these areas are dominated by granodiorite and granite in composition. Quartz, K-feldspar and plagioclase occur as major phases with hornblende and biotite as major ferroma...

2012
Adi Maulana Akira Imai Kotaro Yonezu

Petrology and geochemical characteristics of granitic rocks from South Sulawesi, especially from Polewaliand Masamba area are presented in order to elucidate their origin of magma and geodynamic setting. The granitic rocks in these areas are dominated by granodiorite and granite in composition. Quartz, K-feldspar and plagioclase occur as major phases with hornblende and biotite as major ferroma...

Journal: :Remote Sensing 2013
Lei Liu Jun Zhou Dong Jiang Dafang Zhuang Lamin R. Mansaray Bing Zhang

The Xiemisitai area, West Junggar, Xinjiang, China, is situated at a potential copper mineralization zone in association with small granitic intrusions. In order to identify the alteration zones and mineralization characteristics of the intrusions, Landsat Enhanced Thematic Mapper (ETM+) and Quickbird data of the study area were evaluated in mapping lithological units, small intrusions, and alt...

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