Mn-Cr isotopic systematics of Chainpur chondrules and bulk ordinary chondrites

Bibcode
1994LPICo.844...28N
Nyquist, L.; Lindstrom, D.; Wiesmann, H.; Bansal, B.; Shih, C.-Y.; Mittlefehldt, D.; Martinez, R.; Wentworth, S.
Referencia bibliográfica

In Lunar and Planetary Inst., Papers Presented to the Conference on Chondrules and the Protoplanetary Disk p 28-30 (SEE N95-19289 05-90)

Fecha de publicación:
0
1994
Número de autores
8
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
We report on ongoing study of the Mn-Cr systematics of individual Chainpur (LL3.4) chondrules and compare the results to those for bulk ordinary chondrites. Twenty-eight chondrules were surveyed for abundances of Mn, Cr, Na, Fe, Sc, Hf, Ir, and Zn by INAA. Twelve were chosen for SEM/EDX and high-precision Cr-isotopic studies on the basis of LL-chondrite-normalized Mn(LL), Sc(LL), (Mn/Fe)(LL), and (Sc/Fe)(LL) as well as their Mn/Cr ratios. Classification into textural types follows from SEM/EDX examination of interior surfaces.
Tipo
Sin árbitro
Condritas

Te puede interesar

  • Sin árbitro
    ANDES, the high resolution spectrograph for the ELT: science goals, project overview, and future developments
    The first generation of ELT instruments includes an optical-infrared high resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). ANDES consists of three fibre-fed spectrographs ([U]BV, RIZ, YJH) providing a spectral resolution of ∼100,000 with a minimum simultaneous wavelength
    Marconi, A. et al.

    Fecha de publicación:

    7
    2024
    Bibcode
    2024SPIE13096E..13M
    Número de citas
    1
  • Sin árbitro
    An overview of the preliminary optical design of the European Solar Telescope (EST)
    The European Solar Telescope (EST) is a 4-m class-solar telescope that will become part of the next generation of groundbased facilities. Located at the "Observatorio del Roque de los Muchachos" in La Palma (Spain), it will be aimed to study the magnetic connectivity of the solar atmosphere with high spatial and temporal resolution. The EST optical
    Belío-Asin, Marta et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13094E..2GB
    Número de citas
    0
  • Sin árbitro
    ANDES, the high-resolution spectrograph for the ELT: UBV spectrograph preliminary design
    We present the design of the ANDES UBV module, the bluest spectrograph of the ANDES instrument. It is a fiber-fed high resolution, high stability spectrograph, which will be installed on the ELT-Nasmyth platform to minimize blue fibre losses from the focal plane to the spectrograph. In this paper we present the status of development of the
    Weber, Michael et al.

    Fecha de publicación:

    7
    2024
    Bibcode
    2024SPIE13096E..4AW
    Número de citas
    0