Meteoritics & Planetary Science 41, Nr 9, 1331–1345 (2006) Abstract available online at http://meteoritics.org Geological and geochemical data from the proposed Sirente crater field: New age dating and evidence for heating of target Jens ORMÖ1*, Christian KOEBERL2, Angelo Pio ROSSI3, 4, and Goro KOMATSU3 1Centro de Astrobiología (CSIC/INTA), Instituto Nacional de Técnica Aeroespacial, Ctra de Torrejón a Ajalvir, km 4, 28850 Torrejón de Ardoz, Madrid, Spain 2Department of Geological Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria 3International Research School of Planetary Sciences, Universita d’Annunzio, Viale Pindaro 42, 65127 Pescara, Italy 4ESA Research and Scientific Support Department, Keplerlaan 1, Postbus 299, ESTEC/SCI-SB, 2200 AG Noordwijk, The Netherlands *Corresponding author. E-mail:
[email protected] (Received 23 February 2006; revision accepted 05 July 2006) Abstract–The proposed Sirente crater field consists of a slightly oblong main structure (main crater) 120 m in width and about 30 smaller structures (satellite craters), all in unconsolidated but stiff carbonate mud. Here we focus on the subsurface structure of the satellite craters and compare the Sirente field with known meteorite crater fields. We present a more complete outline of the crater field than previously reported, information on the subsurface morphology of a satellite crater (C8) 8 m in width, radiocarbon and thermoluminescence (TL) ages of material from this crater, and evidence for heated material in both crater C8 and the rim of the main crater. Crater C8 has a funnel shape terminating downwards, and evidence for soil injection from the surface to a depth of 9 m.