摘要:

About 100 Phoenician copper alloy artefacts from Morro de Mezquitilla (Spain) have been analysed by inductively coupled plasma spectrometry and atomic unpublished analyses of contemporary material from Nimrud and with small finds of the same period from several Mediterranean areas. There are no published large‐scale analyses of Phonenician metalwork and few analyses of the copper‐based, very minor objects of the sort typically recovered from excavation and the comparisons show both similarities and differences in techniques and alloys of the various civilizations and classes of obje

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1992.tb00480.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

The carbon‐13 nuclear magnetic resonance spectra of jet samples from England and Spain resemble those of carbonaceous materials from lignitic and sub‐bituminous ranks. This characterization is based on the aromatic/aliphatic ratio of resonances and on the pattern of fine structure. Particularly characteristic of jet is the well‐defined fine structure in the aromatic region that may be attributed to phenolic functionalities. This fine structure is found in all English and Spanish samples. Resonances from rapidly moving methyl groups are found in English but not in Spanish samples and may provide a means of distinguishing prove

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1992.tb00481.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Analysis of fatty material from barrels in a submerged wreck of a whaler in Labrador water showed it to contain free fatty acids, including some higher fatty acid, consistent with whale oil and certainly of marine origin. Conversion to adipocere was extensive but not complete.

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1992.tb00482.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Separate sublayers of the ‘layer 10’calcite from the Mausoleum of Petralona Cave, Greece, have been re‐analysed by Uranium‐series and palaeomagnetic methods. The results confirm earlier findings that the whole of layer 10 represents a long time span, from about 160 ka to more than 350 ka, the latter being the dating limit of the U‐series method using alpha‐spectrometry. The minimum age refers to the upper brown sublayer that is now believed to correspond directly to the brown calcite that cemented the hominid skull to the adjacent cave wall; there was too little of the skull calcite to date directly by alpha‐spectrometry. The age shifts caused by making corrections for the amount of detritus in the sublayer are effectively insensitive to assumed initial values of the amount of common230Th present. Consequently, the minimum age estimate for the skull is about 160 ka, in approximate agreement with several earlier estimates. Palaeomagnetic analyses of ‘layer 10’and underlying sedimentary layers showed that the magnetization is unstable and cannot be used as a basis for age control

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1992.tb00483.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1992.tb00484.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1992.tb00469.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY