Compositional Trends in Chondrules from Unequilibrated Enstatite Chondrite, Parsa

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Petrologic – Geochemical Study of Chondrules in Enstatite

Weisberg, D. S. Ebel, H. C. Connolly Jr., N. T. Kita and T. Ushikubo. Dept. Phys. Sci., Kingsborough College, City University New York, Bklyn, NY 11235 and Dept. Earth and Environmental Sci., The Graduate Center of CUNY 365 5 Ave., NY, NY. ([email protected]). Dept. Earth Planet. Sci., American Museum Natural History, NY, NY 10024. Dept. Geology and Geophys., University Wisconsin-Madison,...

متن کامل

Oxygen Isotopes of Al-rich Chondrules from Unequilibrated Ordinary Chondrites

Al-rich chondrules (ARCs) are a rare constituent of chondrites. They have relatively high bulk Al20 3 content(> 10 wt%), which is due to the presence of Al-rich phases, such as plagioclase, spinel, Al-rich glass etc. [1]. ARCs share some chemical and petrologic characteristics with Ca, Al-rich inclusions (CAis), and may represent a genetic link between ferromagnesian chondrules and CAis. Twelve...

متن کامل

Graphite and Organic Matter in Abee Enstatite Chondrite

The Ries Crater impact breccia deposits are accessible through a series of boreholes. In 2008, a further hole was cored near the village of Enkingen (SE Ries), accessing the crater breccias at the inner slope of the crystalline ring. The 100 m drill core comprises 21.2 m crater sediment above suevite to )86.24 m and a rather massive impact melt rock to endof-hole [1]. Downhole, the abundance an...

متن کامل

Cryptic Metamorphic Effects in Chondrules from Highly Unequilibrated Ordinary Chondrites: an Insidious Parent-body Process

Introduction: Type 3 ordinary chondrites display a wide variety of metamorphic grades, ranging from little metamorphosed type-3.0 chondrites up to nearly equilibrated type 3.9's. Researchers commonly assume that pristine-looking chondrules found in the lowest petrological subtypes have been unaffected by metamorphic processes, and can be used to constrain pre-accretionary processes. Last year, ...

متن کامل

Iron-60 in Troilites from an Unequilibrated Ordinary Chondrite and the Initial

Introduction: Short-lived radionuclides were synthesized either by irradiation with energetic particles or by stellar nucleosynthesis. The recent discovery in CAIs from carbonaceous chondrites of evidence for live 10 Be [1], which is only produced by energetic-particle irradiation , has led to suggestions that the major portion of many short-lived radionuclides (was produced by irradiation. How...

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

ژورنال

عنوان ژورنال: Symposium - International Astronomical Union

سال: 1987

ISSN: 0074-1809

DOI: 10.1017/s0074180900154531