The Mexico City Basin has had exceptional plant and animal diversity since ancient times due to its varied orography and benign climate. This environment attracted diverse human groups, from hunter-gatherers to one of the most influential pre-Hispanic cultures of Mesoamerica: the Mexica, also known as the Aztec. The subsoil of Mexico City hides a rich and varied cultural heritage. The Archaeological Rescue Department works to preserve cultural heritage, review archaeological studies, and expand archaeological information with new findings. We report on archaeological rescue works carried out at two sites in the Mexico City Basin prior to the beginning of new construction projects. The first one is the Reforma Hidalgo Complex Office in Teocaltitlán, one of the neighborhoods of ancient Mexica City, Mexico-Tenochtitlan. Some wooden post samples were selected for accelerator mass spectrometry radiocarbon (AMS 14C) dating, believed to have been used as chinampa supports. We seek to determine their temporality and possible reuse by Hispanic builders. The second one, the La Otra Banda Site, is part of the human settlements that were founded around Cuicuilco, one of the main ancient urban centers of the highlands of Central Mexico. Some human bones and coal samples were selected to be dated, aiming to establish the site’s occupation time.

中文翻译：

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从墨西哥盆地发现的考古材料的放射性碳年代测定

墨西哥城盆地自古以来就因其多变的地形和温和的气候而拥有非凡的植物和动物多样性。这种环境吸引了不同的人类群体，从狩猎采集者到中美洲最有影响力的前西班牙文化之一：墨西哥人，也被称为阿兹特克人。墨西哥城的底土隐藏着丰富多样的文化遗产。考古救援部门致力于保护文化遗产、审查考古研究并利用新发现扩展考古信息。我们报告了在新建设项目开始之前在墨西哥城盆地的两个地点进行的考古救援工作。第一个是位于 Teocaltitlán 的 Reforma Hidalgo 综合办公室，这是墨西哥-特诺奇蒂特兰古墨西卡城的街区之一。14C) 约会，据信已被用作 chinampa 支持。我们试图确定西班牙裔建筑商的临时性和可能的​​再利用。第二个，拉奥特拉班达遗址，是在墨西哥中部高地主要古代城市中心之一的奎奎尔科周围建立的人类住区的一部分。选择了一些人骨和煤样进行年代测定，旨在确定该遗址的占领时间。