Origin and Episodic Emplacement of the Manaslu Intrusive Complex, Central Himalaya

نویسندگان

  • T. MARK HARRISON
  • MARTY GROVE
  • KEVIN D. McKEEGAN
  • C. D. COATH
  • OSCAR M. LOVERA
  • PATRICK LE FORT
چکیده

decompression to achieve the same result appear to require extreme The Manaslu granite is the most studied of the dozen or so plutons conditions not permitted by available geological constraints. that make up the High Himalayan leucogranite belt. The inferred relationship of the Manaslu granite with important Himalayan tectonic structures has inspired repeated attempts to determine its crystallization age, but several geochemical controls have hampered these geochronological investigations. These limitations are circumvented by Th–Pb ion microprobe dating of monazite. We have

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

دما و فشارسنجی و ژئوشیمی توده‌های باردار و عقیم در محور دهج-میدوک با استفاده از شیمی بیوتیت (شمال شهربابک)

Studied rocks are located in Dehaj-Meiduk area north of Shahrbabak.There are eight porphyry intrusive bodies in this region including Meiduk, Parkam, Iejoo, Segino, Narkoh, Ayoub ansar, Sara and Keder that Meiduk, Parkam, Iejoo nad Segino are productive and Narkoh, Ayoub ansar and Sara are barren. The intrusive bodies are composed of quartzdiorite and granodiorite. The intrusive bodies are main...

متن کامل

Thermal structure and exhumation history of the Lesser Himalaya in central Nepal

, J. Geogr., 106, 156–167.Arita, K., Y. Ohta, C. Akiba, and Y. Maruo (1973),Kathmandu region, in Geology of the Nepal Hima-layas, edited by S. Hashimoto, Y. Ohta, and C. Akiba, pp. 99–145, Saikon, Sapporo, Japan.Arita, K., R. D. Dallmeyer, and A. Takasu (1997),Tectonothermal evolution of the Lesser Himalaya, Nepal: Constraints fromAr/Ar ages from theKathmandu Nappe, ...

متن کامل

Mazeno Pass Pluton and Jutial Pluton, Pakistan Himalaya: age and implications for entrapment mechanisms of two granites in the Himalaya

Zircon and monazite U-(Th)-Pb ion microprobe analysis were performed on the Mazeno Pass pluton and the Jutial pluton, two leucogranite bodies within the Nanga Parbat-Haramosh massif (NPHM), Pakistan Himalaya. Zircon rim ages and monazite ages indicate the Mazeno Pass pluton in southwest NPHM intruded at 1.40 ‹ 0.05 Ma; the Jutial pluton, to the north, similarly yields concordant zircon and mona...

متن کامل

Geochemical and isotopic (Nd and Sr) constraints on elucidating the origin of intrusions from northwest Saveh, Central Iran

Three intrusive granitoid bodies from northwest Saveh, central Iran, are embedded in volcanic sedimentary rocks of the Eocene,forming isolated small outcrops: Khalkhab quartz monzodioritic units (SiO2: ~52-57 wt %) to the northwest, Neshveh granodioriticunits (SiO2: ~62-71 wt %) to the northeast, and Selijerd granodioritic units (SiO2: ~63-69 wt %) to the southeast. The Khalkhab unit iscomposed...

متن کامل

Using Magma Mixing/Mingling Evidence for Understanding Magmatic Evolution at Mount Bidkhan Stratovolcano (South-East Iran)

Mount Bidkhan stratovolcano is located in the central Iranian volcanic belt. It is composed of several types of pyroclastic deposits, lava flows and intrusive bodies. Textural and chemical characteristics of plagioclase phenocrysts from the eruptive products volcanic edifice, record complex magma mixing events over the lifetime of the volcano. Evidences such as xenocrystic high Al+Ti clinopyrox...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1999