نتایج جستجو برای: سنسنجی u pb shrimp

تعداد نتایج: 207206  

2013
Hisatoshi Ito Ryuji Yamada Akihiro Tamura Shoji Arai Kenji Horie Tomokazu Hokada

Although the quest for Earth's oldest rock is of great importance, identifying the youngest exposed pluton on Earth is also of interest. A pluton is a body of intrusive igneous rock that crystallized from slowly cooling magma at depths of several kilometers beneath the surface of the Earth. Therefore, the youngest exposed pluton represents the most recent tectonic uplift and highest exhumation....

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...

2002
Mei-Fu Zhou Allen K. Kennedy Min Sun John Malpas Michael Lesher

South China has been considered as part of the Rodinian supercontinent during Neoproterozoic time, although its paleogeographic position within this supercontinent is still a matter of debate. The Wangjiangshan and Bijigou complexes along the northern margin of South China are among the largest mafic intrusions in China. New SHRIMP zircon U-Pb results indicate that these two intrusions have cry...

Journal: :journal of sciences, islamic republic of iran 2013
m. moazzen

u-pb ages obtained on zircons from the investigated migmatites place new constraints on the evolution of the crustal rocks in the takab area. shrimp u-pb dating of inherited zircon in the melanosome parts of mafic migmatites from the takab complex gives a discordant age with an upper intercept of 2961±72 ma (mswd=0.5) and a lower intercept of 24.2±5.7 ma (mswd=1.7). in the concordia diagram, th...

ژورنال: پترولوژی 2015

سنگ‌های آذرین پساافیولیتی با ترکیب ریولیت/داسیت در داخل مجموعه افیولیتی پهنه سبزوار رخنمون دارند. ماهیت کالک‌آلکالن و آداکیتی پرسیلیس این سنگ‌ها پیش از این به اثبات رسیده است. این سنگ‌ها حاوی مقادیر نسبت‌های ایزوتوپی نخستین 87Sr/86Sr (70382/0 تا 70444/0) و Nd(t)ε (30/5+ تا 18/6+) مشابه با ترکیبات بازالت پشته میان اقیانوسی (MORB) هستند. این ویژگی‌های ایزوتوپی با ترکیبات آداکیتی حاصل از ذ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید