Searching for the Evolved Crust of Oxidized Asteroids

نویسندگان

  • J. M. Sunshine
  • M. D. Day
  • R. D. Ash
  • T. J. McCoy
  • S. J. Bus
  • R. L. Klima
چکیده

([email protected]), J. M. D. Day, R. D. Ash., T. J. McCoy, S. J. Bus, R. L. Klima, and T. Hiroi. Dept. of Astronomy/Dept. of Geology, University of Maryland, College Park, MD, 20742, USA; Dept. of Mineral Sciences, Smithsonian Institution, Washington, DC, 20560, USA; Institute for Astronomy, University of Hawaii, Hilo, HI, 96720, USA; Dept. of Geological Sciences, Brown University, Providence, RI, 02912, USA.

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

The mafic rocks along the North Tabriz Fault, possible remnants of Neo-Tethys oceanic crust in NW Iran

The North Tabriz Fault is seismologically an active fault with current right lateral strike-slip movements. Restricted mafic to intermediate Late Cretaceous igneous rocks are exposed along the North Tabriz Fault. Whole rock samples and clinopyroxene phenocrysts geochemistry were studied in order to characterize the petrogenesis of these mafic rocks and their possible relation to an oceanic crus...

متن کامل

بررسی‌های سنگ‌نگاری، کانی شیمی و ژئوشیمی توده‌های لامپروفیری و گابروی قلیایی هوای (شمال‌شرقی هوراند، شمال‌غربی ایران)

The lamprophyric body of the Houway area at northeast of Hourand and northwest of Iran, is injected in the form of a laccolite within the core of a plunging anticline with WNW-ESE axial trend, which is composed of the Upper Cretaceous-Paleocene flysch deposits, and is cut by an alkaline gabbroic stock. The lithology composition of the lamprophyric body indicates camptonite to sanaite. Based on ...

متن کامل

OXYGEN FUGACITY OF THE MARTIAN BASALTS FROM ANALYSIS OF Fe-Ti OXIDES: IMPLICATIONS FOR MANTLE-CRUST INTERACTION ON MARS

Synopsis: The oxygen fugacity of the basaltic martian meteorites has been calculated from thermodynamic models involving spinel-ilmenite equilibria. The wide range of estimates, from near the IW buffer to near QFM, may be explained by mixing of mantlederived melts with oxidized material in the martian crust. Possible oxidized crustal end-members are considered. Analytical Method and Results: Sp...

متن کامل

The Comparison of Size-Frequency Distributions of Impact Craters and Asteroids and the Planetary Cratering Rate

The well-investigated size-frequency distributions (SFD) for lunar craters can be used to estimate the SFD for projectiles that formed craters both on terrestrial planets and on asteroids. Our results suggest these distributions may have been relative stable over the past 4 G.y. The derived projectile SFD is found to have a shape that is similar to the SFD of main-belt asteroids as compared wit...

متن کامل

Oxygen Isotope Compositions of Mineral Separates from Snc Meteorites: Constraints on the Petrogenesis of Martian Magmas

Introduction: Martian (SNC) meteorites are igneous rocks that range from a reduced, trace-element depleted end member to an oxidized, trace-element enriched end member [1-3] (Figure 1). One interpretation of this trend is that relatively reduced, depleted magmas are partial melts of a reduced peridotitic mantle, whereas more oxidized, enriched magmas are mantle-derived magmas contaminated by ox...

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 2009