Skip to main content

Oxygen isotope and petrological study of silicate inclusions in IIE iron meteorites and their relationship with H chondrites

McDermott, K. H., Greenwood, Richard C., Scott, Edward R.D., Franchi, Ian A., Anand, Mahesh (2016) Oxygen isotope and petrological study of silicate inclusions in IIE iron meteorites and their relationship with H chondrites. Geochimica et Cosmochimica Acta, 173 . pp. 97-113. ISSN 0016-7037. (doi:10.1016/j.gca.2015.10.014) (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:55426)

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
http://doi.org/10.1016/j.gca.2015.10.014

Abstract

The origin of silicate-bearing irons, especially those in groups IAB, IIICD, and IIE, is poorly understood as silicate should

inclusions in eleven group IIE meteorites and a petrological study of silicate inclusions in ten IIE irons including those in Garhi

chondrites to investigate their possible relationship with the IIE irons.

types according to the nature of their silicate inclusions: (1) primitive chondritic, (2) evolved chondritic, (3) differentiated with

type. While inclusions in an individual IIE meteorite tend to show relatively limited D17O variation, a wide range of values

of mean D17O values that is essentially identical to those of the H4-6 chondrites: 0.60–0.77‰ and 0.61–0.76‰, respectively.

?2r away from the next nearest IIE iron. However, in view of the textural similarities to other IIE inclusions, a separate

and Techado, have relatively low mean D17O values of 0.56–0.57‰ as well as relatively reduced silicates with Fa15–17 olivine,

between IIE irons and H chondrites is supported by our new data. However, derivation of both groups from one parent

location.

initial stages of differentiation in response to radiogenic heating. However, prior to full differentiation the IIE parent body

a phase of rapid cooling that prevented unmixing of metal and silicates. Reassembly of the IIE parent body produced a large

less catastrophic collisions. The development of alkali glass textures in some differentiated inclusions is probably the result of

one of these later events.

Item Type: Article
DOI/Identification number: 10.1016/j.gca.2015.10.014
Subjects: Q Science > QE Geology > QE515 Geochemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Kathryn Harriss
Date Deposited: 13 May 2016 12:10 UTC
Last Modified: 29 May 2019 17:20 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/55426 (The current URI for this page, for reference purposes)
  • Depositors only (login required):