当前位置: X-MOL 学术Geoarchaeology › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The significance of aragonite in the interpretation of the microscopic archaeological record
Geoarchaeology ( IF 1.7 ) Pub Date : 2020-08-08 , DOI: 10.1002/gea.21816
Michael B. Toffolo 1
Affiliation  

Aragonite is one of the metastable polymorphs of calcium carbonate and is commonly found at archaeological sites in the form of mollusk shells and speleothems. Other occurrences include corals, fish otoliths, seed endocarps, wood ash, and lime plaster. These materials contain microscopic embedded information of fundamental importance for the assessment of the state of preservation of the archaeological record, the reconstruction of paleoenvironments, the identification of pyrotechnological processes, and the establishment of absolute chronologies. However, this information can be used only if the aragonite found at archaeological sites preserves its pristine structure and chemistry. Aragonite is metastable at ambient conditions and tends to dissolve and recrystallize into secondary aragonite or calcite, a process that entails the loss of its original elemental and isotopic signature. Therefore, well‐grounded archaeological interpretations depend on the correct identification of aragonite and the careful characterization of its basic properties. This article reviews the dissolution processes of different types of aragonite, the methods used for their identification, and the archaeological information that can be extracted. Particular emphasis is given to the discussion of key issues regarding absolute dating and postdepositional processes of archaeological sediments, and to a detailed overview of the recently observed pyrogenic aragonite.

中文翻译:

文石在微观考古记录解释中的意义

文石是碳酸钙的亚稳多晶型物之一,通常在考古现场以软体动物壳和鞘脂类形式发现。其他事件包括珊瑚,鱼耳石,种子果皮,木灰和石灰灰泥。这些材料包含微观嵌入式信息,这些信息对于评估考古记录的保存状态,古环境的重建,热技术过程的识别以及绝对年代的建立至关重要。但是,仅当在考古现场发现的文石保留其原始结构和化学性质时,才能使用此信息。文石在环境条件下是亚稳态的,并且易于溶解并重结晶为次生文石或方解石,导致其原始元素和同位素特征丧失的过程。因此,有充分根据的考古学解释取决于文石的正确识别及其基本特性的仔细表征。本文介绍了不同类型文石的溶解过程,用于鉴定它们的方法以及可以提取的考古信息。特别强调有关考古沉积物绝对年代和沉积后过程的关键问题的讨论,以及最近观察到的热解文石的详细概述。本文介绍了不同类型文石的溶解过程,用于鉴定它们的方法以及可以提取的考古信息。特别强调有关考古沉积物绝对年代和沉积后过程的关键问题的讨论,以及最近观察到的热解文石的详细概述。本文介绍了不同类型文石的溶解过程,用于鉴定它们的方法以及可以提取的考古信息。特别强调有关考古沉积物绝对年代和沉积后过程的关键问题的讨论,以及最近观察到的热解文石的详细概述。
更新日期:2020-08-08
down
wechat
bug