Citation:

S0967-0645(01)00141-2

Name: Results of analyses of unmelted meteoritic debris collected from Eltanin ejecta in three sediment core from POLARSTERN cruise ANT-XII/4
Creator: Frank T Kyte
Published: 2002
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

A total of 1.7 g of unmelted meteorite particles have been recovered from FS Polarstern piston cores collected on expedition ANT XII/4 that contain ejecta from the Eltanin impact event. Most of the mass (1.2 g) is a large, single specimen that is a polymict breccia, similar in mineralogy and chemistry to howardites or the silicate fraction of mesosiderites. Most of the remaining mass is in several large individual pieces (20-75mg each) that are polymict breccias, fragments dominated by pyroxene, and an igneous rock fragment. The latter has highly fractionated REE, similar to those reported in mafic clasts from mesosiderites. Other types of specimens identified include fragments dominated by maskelynite or olivine. These pieces of the projectile probably survived impact by being blown off the back surface of the Eltanin asteroid during its impact into the Bellingshausen Sea.

Coverage:

Median Latitude: -57.528044 * Median Longitude: -90.983211 * South-bound Latitude: -57.779000 * West-bound Longitude: -91.220000 * North-bound Latitude: -57.390000 * East-bound Longitude: -90.807000

Date/Time Start: 1995-05-01T18:52:00 * Date/Time End: 1995-05-06T17:02:00

Event(s):

PS2704-1 (PS35/196) * Latitude: -57.390000 * Longitude: -90.807000 * Date/Time: 1995-05-01T18:52:00 * Elevation: -4961.0 m * Penetration: 19.4 m * Recovery: 18.04 m * Location: Southeast Pacific * Campaign: (PS35 06AQANTXII_4) * Basis: * Method/Device: Piston corer (BGR type) (KL) * Comment: 19 core sections: 0-0.92, 0.92-1.92, 1.92-2.92, 2.92-3.92, 3.92-4.92, 4.92-5.92, 5.92-6.92, 6.92-7.92, 7.92-8.94, 8.94-9.94, 9.94-10.94, 10.94-11.94, 11.94-12.94, 12.94-13.94, 13.94-14.94, 14.94-15.94, 15.94-16.94, 16.94-17.94, 17.94-18.04 m

PS2708-1 (PS35/201) * Latitude: -57.779000 * Longitude: -90.998000 * Date/Time: 1995-05-06T11:20:00 * Elevation: -3965.0 m * Penetration: 16 m * Recovery: 14.39 m * Location: Southeast Pacific * Campaign: (PS35 06AQANTXII_4) * Basis: * Method/Device: Piston corer (BGR type) (KL) * Comment: 15 core sections: 0-0.5, 0.5-1.5, 1.5-2.5, 2.5-3.5, 3.5-4.5, 4.5-5.5, 5.5-6.5, 6.5-7.5, 7.5-8.5, 8.5-9.5, 9.5-10.51, 10.51-11.51, 11.51-12.51, 12.51-13.51, 13.51-14.39 m, Core includes Eltanin meteorite impact sediments.

PS2709-1 (PS35/202) * Latitude: -57.590000 * Longitude: -91.220000 * Date/Time: 1995-05-06T17:02:00 * Elevation: -2707.0 m * Penetration: 21 m * Recovery: 18.68 m * Location: Southeast Pacific * Campaign: (PS35 06AQANTXII_4) * Basis: * Method/Device: Piston corer (BGR type) (KL) * Comment: 19 core sections: 0-0.71, 0.71-1.71, 1.71-2.72, 2.72-3.72, 3.72-4.72, 4.72-5.72, 5.72-6.72, 6.72-7.72, 7.72-8.68, 8.68-9.68, 9.68-10.68, 10.68-11.68, 11.68-12.68, 12.68-13.68, 13.68-14.68, 14.68-15.68, 15.68-16.68, 16.68-17.68, 17.68-18.68 m, Core includes Eltanin meteorite impact sediments.

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

3 datasets

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Datasets listed in this publication series

Kyte, FT (2011): Table 1. Mass and estimated composition of Eltanin meteorite particles >1 mg in size that were collected from three Polarstern cores. https://doi.org/10.1594/PANGAEA.772037
Kyte, FT (2011): Table 2. Selected electron microprobe analyses of mineral phases in the Eltanin meteorite. https://doi.org/10.1594/PANGAEA.772038
Kyte, FT (2011): Table 3. Rare-earth element concentrations measured in six specimens of the Eltanin meteorite. https://doi.org/10.1594/PANGAEA.772039