Abstract

POMEDIO, Chloé Marie et al. Archeomagnetic study of the burnt floor in La Palma, Cuzalapa valley, Sierra de Manantlán (Jalisco). Bol. Soc. Geol. Mex [online]. 2022, vol.74, n.1, e010721.  Epub May 02, 2023. ISSN 1405-3322.  https://doi.org/10.18268/bsgm2022v74n1a010721.

The first explorations carried out by the Archaeology of the Sierra de Manantlán Project, in the Cuzalapa valley (south of Jalisco), show unambiguous evidence for the pre-Hispanic occupation of this still archeologically unknown region. The discovery of several architectural sites and rock-graphic manifestations raises the question of the absolute chronology of these remains. Under unfavorable fieldwork conditions and in absence of associated charcoal and other diagnostic artifacts, archaeomagnetic investigation of a well-preserved burned floor at la Palma site may largely contribute to the absolute chronology. The present work is part of the frontier investigations between archeology and geophysics (paleomagnetism and archeomagnetism), to archaeomagnetically date a burned floor from la Palma site. This may also allow to tentatively locate the occupation of the Cuzalapa valley in the Early Postclassic period (900-1200 d.C.) and to outline a first interpretation of the possible cultural dynamics in the extra-regional context of the development of the Aztatlán network..

Keywords : applied geophysics; archaeomagnetism; archaeology; Manantlán Mountains; Cuzalapa; Early Postclassic.