Archaeomagnetic Study of Limeplasters from Pre-hispanic Sites from Central Mexico
Abstract
In this work, we report the new archeomagnetic data from limeplasters of the archeological sites Teopancazco, Teotihuacan, Xochicalco and Templo Mayor, which correspond to Classical, Epi-Classical and Post-Classical periods of Mesoamerica, respectively. The results obtained allowed us to improve the existing paleosecular variation reference curve for Mesoamerica. The previously reported results, we used for our database belongs to Latham et al., 1986, (stalagmite with a time span from 750 A.D. to 1941 A.D.), and from Urrutia-Fucugauchi, 1996, (historic eruptions). We also incorporated some declination data from explorers and mexican scientists during 1587 to 1869. The observatory data used in this study come from the Teoloyucan magnetic observatory, run by UNAM in central Mexico since 1923. Results of unburned limeplasters permit date the time of elaboration of the limeplasters. Moreover, we were able to discriminate between different construction steps for studied archaeological sites. From the study of burned samples it is possible to date the re-occupation of Teotihuacan culture by the Aztecs.
- Publication:
-
AGU Spring Meeting Abstracts
- Pub Date:
- May 2001
- Bibcode:
- 2001AGUSM..GP51A03H
- Keywords:
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- 1500 GEOMAGNETISM AND PALEOMAGNETISM;
- 1503 Archeomagnetism;
- 1521 Paleointensity;
- 1522 Paleomagnetic secular variation;
- 1540 Rock and mineral magnetism