Skip to main content

Chondritic micrometeorites from the Transantarctic Mountains

van Ginneken, Matthias, Folco, Luigi, Cordier, Carole, Rochette, Pierre (2012) Chondritic micrometeorites from the Transantarctic Mountains. Meteoritics & Planetary Science, 47 (2). pp. 228-247. ISSN 1086-9379. E-ISSN 1945-5100. (doi:10.1111/j.1945-5100.2011.01322.x) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:88125)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
https://doi.org/10.1111/j.1945-5100.2011.01322.x

Abstract

On the basis of morphological and petrographic characteristics, eight “giant” unmelted micrometeorites in the 300–1100 μm size range were selected from the Transantarctic Mountain micrometeorite collection, Victoria Land, Antarctica. Mineralogical and geochemical data obtained by means of scanning electron microscopy, electron probe microanalyses, and synchrotron X‐ray diffraction allow their classification as chondritic micrometeorites. The large size of the micrometeorites increases considerably the amount of mineralogical and geochemical information compared to micrometeorites in smaller size fractions, therefore allowing a better definition of their parent material. A large variety of material is observed: five micrometeorites are related to unequilibrated and equilibrated ordinary chondrite, one to CV chondrite, one to CM chondrite, and one to CI chondrite parent materials. Besides reporting the first occurrence of a CV‐like micrometeorite, our study shows that the abundance of chondritic material supports observations from recent studies on cosmic spherules that a large part of the micrometeorite flux in this size range is of asteroidal origin.

Item Type: Article
DOI/Identification number: 10.1111/j.1945-5100.2011.01322.x
Subjects: Q Science > QB Astronomy > QB651 Planets, Minor
Q Science > QE Geology > QE515 Geochemistry
Divisions: Divisions > Division of Natural Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Matthias van Ginneken
Date Deposited: 14 May 2021 10:09 UTC
Last Modified: 17 May 2021 09:41 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/88125 (The current URI for this page, for reference purposes)
van Ginneken, Matthias: https://orcid.org/0000-0002-2508-7021
  • Depositors only (login required):