乌尔第三王朝时期的尼普尔银贷业商人档案研究(下):档案重建

古代两河流域文明的银贷业十分发达。本文根据4本汇集了全部出土于宗教中心尼普尔城的乌尔第三王朝时期经济档案文件的原文集,以出土借据中的落款日期和商人的名字为序列,对7个主要商人的文件进行了档案重建,进而为理解古代两河经济领域中货币形式、银贷利率、商人职能等金融和商业规律提供第一手史料。     

荥阳官庄遗址两周时期制陶原料的来源及加工工艺分析

为探讨官庄遗址两周之际制陶原料的选取与陶泥料加工工艺的差异,本研究以官庄遗址泥料坑出土夹砂陶泥料、泥质陶泥料及泥制陶坯、夹砂陶坯,和遗址所在自然沉积地层中的全新世古土壤、马兰黄土、附近枯河河道河砂为主要研究对象,采用粒度、磁化率、X射线荧光光谱(XRF)分析方法对样品进行分析实验。研究结果表明:1)官庄制陶原料来自于遗址所处地点的晚更新世、全新世以来的沉积地层,其中夹砂陶泥料和陶坯中的羼合料主要取自于枯河河道中的河砂;2)遗址使用期间,早晚不同时期的陶泥料选取和加工工艺有所不同——早期以马兰黄土或全新世古土壤为原料,经严格的淘洗工序后,选用优势组分为1～11 μm的部分添加河砂制备成夹砂陶泥料,粗粒河砂与细粒黏土比例为1∶4;而晚期出现了以全新世古土壤为原料,直接或只经过简单淘洗工序后制备成泥质陶泥料。     

The Hemerdon China Clay Works,Devon: A History and Description of the Site and Working Methods

This article presents an overview of the Hemerdon China Clay Works, 6 miles north-east of Plymouth (Devon), active from c.1860 to 1942. Based on research commissioned in advance of an extension to Headon West Quarry, it describes the development of the clay works and the methods of clay extraction and processing. Archaeological survey recorded a broad range of structures, features, earthworks and artefacts. They included the remains of an engine house of c.1907, two large masonry bases (probably associated with the flat rod system that transferred power from the engine) and a rocker beam. The article also describes a group of mica drags and settling tanks built c.1907. Combining this evidence with that gleaned from documentary sources, notably the large-scale Ordnance Survey mapping, an exceptionally detailed narrative has been constructed of the work's development through time. It has a relevance beyond the particular, and will help the future interpretation and management of the china clay extraction sites that are so characteristic of the region.     

Diatoms as indicators of provenance in Finnish sub-neolithic pottery

The clays of Finland originated from glacial deposits formed during the deglaciation of the Weichselian ice-sheet and during the different stages of the Baltic Sea. The analysis of the fossil diatom flora is of central importance in the study of its developmental history. The diatoms in the clay indicate its sedimentary environment, which can be linked to the stages of the Baltic Sea. The siliceous valves of diatoms tolerate heating up to 1400°C and can consequently be identified in ceramics fired at lower temperatures. Several diatom analyses have been made in Finnish Sub-Neolithic comb ware pottery in order to determinate the origin of their clay materials. According to the results of these studies, prehistoric potteries used clays deposited during the Yoldia and the Ancylus stages. The criteria used in selecting raw materials were identical to those of modern ceramic industries. Further details as to provenance of clay materials have been illustrated in connection with research on pottery from the Aland Islands. In the example from Kymi, South-eastern Finland, changes in the composition of the diatom flora have been found to correlate with changes in pottery decoration styles.     

湖南七星墩遗址中红烧土建筑材料的科学分析

新石器时代中期,中国先民将制陶技术运用于房屋建筑中,发展了一系列强度与耐水性能显著提升的烧土建筑材料,极大地改善了居住环境。长江中下游地区新石器时代房屋建筑发展脉络清晰,广泛利用红烧土材料。采用XRD法、XRF法、磁化率法和色度法从物相组成、元素成分、磁化率、色度等方面对湖南七星墩遗址出土的不同文化时期的烧土样品进行综合分析。结果表明,6件红烧土样品应均为就地取土,并在泥料中加入了稻壳和稻草等植物残骸作为羼和料,经人工烘烤而成的建筑材料,等效烧成温度区间为550～700℃。研究结果可丰富史前建筑史的研究,磁化率测温法为未烧制黏土考古材料的烧成温度研究提供了一种科学有效的方法,进一步可尝试应用于早期陶器(尤其低温陶器)的烧成温度研究。