scholarly journals Provenance of Zhou Dynasty bronze vessels unearthed from Zongyang County, Anhui Province, China: determined by lead isotopes and trace elements

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Yanjie Wang ◽  
Guofeng Wei ◽  
Qiang Li ◽  
Xiaoping Zheng ◽  
Danchun Wang
Keyword(s):  
Lead Isotopes ◽  
Isotope Analysis ◽  
Trace Element Analysis ◽  
Element Analysis ◽  
The North ◽  
Material Sources ◽  
Zhou Dynasty ◽  
Bronze Vessels ◽  
Spring And Autumn Period ◽  
North Bank

AbstractThirteen Zhou Dynasty bronze vessels and two slags from Zongyang County along the north bank of the Yangtze River in Anhui were analyzed by LA-MC-ICP-MS and EDXRF. The results of lead isotope analysis showed that there were two kinds of lead materials in the Zongyang bronzes. Vessels in Class I, thought to have originated from the Wannan region were primarily used during the Western Zhou and the following Spring and Autumn period; while those in Class II, possibly from the local mines in Zongyang County, were mainly present during the Warring States period. Such a shift in the ore material sources is also revealed by the trace element analysis of the Zongyang bronzes. With reference to the relevant historical documents, we suggest that the transformation of the bronze material sources might have been associated with the changes of the political situation during the Zhou Dynasty.

scholarly journals Provenance of the Zhou Dynasty Bronze Vessels Unearthed from Zongyang County, Anhui Province, China: Determined by Lead Isotopes and Trace Elements

2021 ◽  
Author(s):  
Yanjie Wang ◽  
Guofeng Wei ◽  
Qiang Li ◽  
Xiaoping Zheng ◽  
Danchun Wang
Keyword(s):  
Trace Elements ◽  
Lead Isotopes ◽  
Isotope Analysis ◽  
Warring States Period ◽  
Warring States ◽  
The North ◽  
Material Sources ◽  
Zhou Dynasty ◽  
Bronze Vessels ◽  
North Bank

Abstract Thirteen Zhou Dynasty bronze vessels and two slags from Zongyang County along the north bank of the Yangtze River in Anhui were analyzed by LA-MC-ICP-MS and EDXRF. The results of the lead isotope analysis showed that there were two kinds of lead materials in the Zongyang bronzes. Class Ⅰ which could have originated from the Wannan region were mainly used in the Western Zhou and the following Spring and Autumn periods; while Class Ⅱ, possibly from the local mines in Zongyang County, were mainly present in the Warring States period. Such a shift in the ore material sources is also revealed by the analysis of the trace elements of the Zongyang bronzes. With reference to relevant historical documents, it can be inferred that the transformation of the bronze material sources could be related to the changes of the political situation during the Zhou Dynasty.

scholarly journals Mud Tank Zircon: Long‐Term Evaluation of a Reference Material for U‐Pb Dating, Hf‐Isotope Analysis and Trace Element Analysis

2019 ◽  
Vol 43 (3) ◽  
pp. 339-354 ◽  
Author(s):  
Sarah E. M. Gain ◽  
Yoann Gréau ◽  
Hadrien Henry ◽  
Elena Belousova ◽  
Ivars Dainis ◽  
...  
Keyword(s):  
Reference Material ◽  
Trace Element ◽  
Isotope Analysis ◽  
Trace Element Analysis ◽  
Hf Isotope ◽  
Element Analysis ◽  
Term Evaluation

New Insights Into the Control of Visible Gold Fineness and Deposition: A Case Study of the Sanshandao Gold Deposit, Jiaodong, China

2021 ◽  
Vol 106 (1) ◽  
pp. 135-149
Author(s):  
Hong-Wei Peng ◽  
Hong-Rui Fan ◽  
Xuan Liu ◽  
Bo-Jie Wen ◽  
Yong-Wen Zhang ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Inductively Coupled Plasma ◽  
Gold Mineralization ◽  
Isotope Analysis ◽  
Trace Element Analysis ◽  
Sulfide Minerals ◽  
Element Analysis ◽  
Rock Interaction ◽  
Inductively Coupled ◽  
Icp Ms

Abstract Mineralogical distribution, textures, electron probe microanalysis of visible gold, laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) trace element analysis of pyrite, and LA-multicollector (MC-)ICP-MS sulfur isotope analysis of sulfide minerals are examined in an ore zone extending obliquely to –4 km depth in the Sanshandao gold deposit Jiaodong, China. We relate these results to the temporal and spatial ore-forming processes in the deposit to further elucidate the controls on the deposition of visible Au and fineness variation. Two generations of Au mineralization are identified. The early generation is represented by beresitization and quartz-pyrite veins in which visible Au grains are associated with pyrite (Py1 and Py2) and are characterized by high fineness [729–961; fineness = 1000×Au/(Au+Ag)]. Py1 and Py2 are both enriched in Co, Ni, and Bi and depleted in As and Au. Texturally, gold and pyrite are pristine crystals, homogeneous in composition. These features are attributed to the sulfidation of the granitic wallrock (fluid/rock interaction) that effectively destabilizes Au in the ore-forming fluids during pyrite deposition. Fineness decreases continuously from 870 at –2650 m depth to 752 at –420 m depth. The Co and Ni contents of Py1 and Py2 decrease significantly from –4000 m to –420 m depth, whereas the As contents increase. The mean δ34S values of Py1 increase from 10.5 to 11.8‰. The spatial variations are interpreted to be related to gradual cooling, decompression, and an enhanced degree of fluid/rock interaction with decreasing depth, which facilitated the initiation of visible gold mineralization at ca. –2700 m depth. The late generation of Au mineralization is represented by quartz-polysulfide veins in which visible Au grains are associated with multiple sulfide minerals (Py3, galena, chalcopyrite, arsenopyrite, and sphalerite). It is characterized by low fineness (549–719), and heterogeneous textures with Ag-rich parts (218–421). Py3, occurring as the rim of pyrite grain, is interpreted to form by replacement via a dissolution-reprecipitation reaction. Py3 is distinctly enriched in As (median of 10 000 ppm) and Au (2.2 ppm), but depleted in Co, Ni, and Bi. The δ34S values of the polysulfide minerals decrease sharply by 4 to 5‰ at depths from –1909 to –1450 m. These features are interpreted to be generated by significant decompression and phase separation of fluid, where most ore elements (e.g., Au, Ag, As, and base metal elements) are destabilized. Our study suggests that remobilization did not affect the generation of visible Au mineralization at Sanshandao.

scholarly journals Historical overview and new directions in bioarchaeological trace element analysis: a review

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Rachel Simpson ◽  
David M. L. Cooper ◽  
Treena Swanston ◽  
Ian Coulthard ◽  
Tamara L. Varney
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Isotope Analysis ◽  
Trace Element Analysis ◽  
Historical Overview ◽  
Element Analysis ◽  
Strong Affinity ◽  
Current State ◽  
Complex Element ◽  
The 1960S

AbstractGiven their strong affinity for the skeleton, trace elements are often stored in bones and teeth long term. Diet, geography, health, disease, social status, activity, and occupation are some factors which may cause differential exposure to, and uptake of, trace elements, theoretically introducing variability in their concentrations and/or ratios in the skeleton. Trace element analysis of bioarchaeological remains has the potential, therefore, to provide rich insights into past human lifeways. This review provides a historical overview of bioarchaeological trace element analysis and comments on the current state of the discipline by highlighting approaches with growing momentum. Popularity for the discipline surged following preliminary studies in the 1960s to 1970s that demonstrated the utility of strontium (Sr) as a dietary indicator. During the 1980s, Sr/Ca ratio and multi-element studies were commonplace in bioarchaeology, linking trace elements with dietary phenomena. Interest in using trace elements for bioarchaeological inferences waned following a period of critiques in the late 1980s to 1990s that argued the discipline failed to account for diagenesis, simplified complex element uptake and regulation processes, and used several unsuitable elements for palaeodietary reconstruction (e.g. those under homeostatic regulation, those without a strong affinity for the skeleton). In the twenty-first century, trace element analyses have been primarily restricted to Sr and lead (Pb) isotope analysis and the study of toxic trace elements, though small pockets of bioarchaeology have continued to analyse multiple elements. Techniques such as micro-sampling, element mapping, and non-traditional stable isotope analysis have provided novel insights which hold the promise of helping to overcome limitations faced by the discipline.

scholarly journals LA-ICP-MS Trace-Element Analysis of Pyrite from the Huanxiangwa Gold Deposit, Xiong’ershan District, China: Implications for Ore Genesis

Minerals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 157
Author(s):  
Fuping Gao ◽  
Yangsong Du ◽  
Zhenshan Pang ◽  
Yilun Du ◽  
Fengpei Xin ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Inductively Coupled Plasma ◽  
Trace Element Analysis ◽  
Hydrothermal Activity ◽  
Coarse Grained ◽  
First Episode ◽  
Yangtze Craton ◽  
Element Analysis ◽  
The North ◽  
Icp Ms

The Huanxiangwa deposit is a major gold deposit in the Xiong’ershan district, which is the third-largest gold-producing district in China. Pyrites from the Huanxiangwa deposit were investigated using ore microscopy and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Pyrite is the dominant Au-bearing mineral in the Huanxiangwa deposit and can be divided into two types: medium- to fine-grained subhedral-anhedral pyrite (Py1) disseminated in altered rocks and coarse-grained subhedral-euhedral pyrite (Py2) hosted in auriferous quartz veins. LA-ICP-MS time-resolved depth profiles show that invisible gold occurs primarily as solid solution or as homogeneously distributed nanoparticles of native gold, electrum, or Au-Ag-Te minerals in Py1, whereas it is present mainly as nano- to submicron-sized inclusions of complex Au-Ag-Cu-Pb-Zn domains in Py2. The presented data indicate that the Huanxiangwa deposit resulted from two episodes of hydrothermal mineralization associated with two distinct source reservoirs. The first episode of mineralization was linked to the dehydration of deep-seated mafic-ultramafic metamorphic rock during the Triassic collision of the North China Craton with the Yangtze Craton. The second episode of mineralization was related to hydrothermal activity resulting from Early Cretaceous I-type granitic magmatism.

Early Miocene calc-alkaline felsic tuffs within deep-marine turbidites in the Kyrenia Range, north Cyprus, with a possible post-collisional eruptive centre in western Anatolia

2021 ◽  
pp. 1-13
Author(s):  
Guohui Chen ◽  
Alastair H. F. Robertson
Keyword(s):  
Volcanic Rocks ◽  
Trace Element Analysis ◽  
Western Mediterranean ◽  
Early Miocene ◽  
Western Anatolia ◽  
Terrigenous Material ◽  
Element Analysis ◽  
The North ◽  
North Cyprus ◽  
Felsic Volcanic

Abstract Felsic tuff as a direct fallout deposit is known from one small area in the Kyrenia Range, north Cyprus, within deep-sea terrigenous turbidites. Nearby tuffaceous siltstones contain compositionally similar felsic volcanic rocks (c. 5–10%), mixed with terrigenous material. Sedimentary evidence indicates that the fallout tuff was variable reworked locally, whereas the tuffaceous siltstones are interpreted as turbidites mixed with terrigenous material derived from Anatolia. U–Pb dating of zircons that were extracted from a sample of relatively homogeneous tuff yielded a dominant age of 16.64 ± 0.12 Ma (Burdigalian). Zircon trace-element analysis indicates predominant derivation from within-plate-type felsic magma. Whole-rock chemical analysis of the tuffaceous sediments as a whole is compatible with a felsic arc source, similar to the post-collisional magmatism within Anatolia. Regional comparisons suggest that the nearest volcanism of similar age and composition is located c. 500 km away, within the Kırka area (Eskişehir region) of the Western Anatolia Volcanic Province. Evidence of tephra dispersal in the western Mediterranean region and climatic modelling suggests E-wards prevailing winds and therefore tephra transport over southern Anatolia and adjacent areas during early Miocene time. The north Cyprus tuffs could represent powerful Minoan (Plinian)-type eruptions in western Anatolia, coupled with SE-wards tephra transport during and soon after the onset of post-collisional magmatism.

An improved interference correction for trace element analysis

1992 ◽  
Vol 50 (2) ◽  
pp. 1646-1647
Author(s):  
John J. Donovan ◽  
Donald A. Snyder ◽  
Mark L. Rivers
Keyword(s):  
Trace Element Analysis ◽  
Accurate Estimate ◽  
Simple Expression ◽  
Standard Reference Materials ◽  
Characteristic Line ◽  
Analytical Line ◽  
Element Analysis ◽  
Electron Probe Analysis ◽  
Calculated Concentration ◽  
X Ray

We present a simple expression for the quantitative treatment of interference corrections in x-ray analysis. WDS electron probe analysis of standard reference materials illustrate the success of the technique.For the analytical line of wavelength λ of any element A which lies near or on any characteristic line of another element B, the observed x-ray counts at We use to denote x-ray counts excited by element i in matrix j (u=unknown; s=analytical standard; ŝ=interference standard) at the wavelength of the analytical line of A, λA (Fig. 1). Quantitative analysis of A requires an accurate estimate of These counts can be estimated from the ZAF calculated concentration of B in the unknown C,Bu measured counts at λA in an interference standard of known concentration of B (and containing no A), and ZAF correction parameters for the matrices of both the unknown and the interference standard at It can be shown that:

Reconstructing sea turtle ontogenetic habitat shifts through trace element analysis of bone tissue

2019 ◽  
Vol 608 ◽  
pp. 247-262 ◽  
Author(s):  
MD Ramirez ◽  
JA Miller ◽  
E Parks ◽  
L Avens ◽  
LR Goshe ◽  
...  
Keyword(s):  
Trace Element ◽  
Bone Tissue ◽  
Trace Element Analysis ◽  
Sea Turtle ◽  
Element Analysis ◽  
Ontogenetic Habitat Shifts

Method of Detecting Trace Metal Contamination in Thick-Film SOI Device

2005 ◽  
Author(s):  
Yasunori Goto ◽  
Hiroomi Eguchi ◽  
Masaru Iida
Keyword(s):  
Trace Metal ◽  
Thick Film ◽  
Metal Contamination ◽  
Semiconductor Device ◽  
Trace Element Analysis ◽  
Silicon On Insulator ◽  
Element Analysis ◽  
Trace Metal Contamination ◽  
Trace Metal Elements ◽  
Output Characteristics

Abstract In the automotive IC using thick-film silicon on insulator (SOI) semiconductor device, if the gettering capability of a SOI wafer is inadequate, electrical characteristics degradation by metal contamination arises and the yield falls. At this time, an automotive IC was made experimentally for evaluation of the gettering capability as one of the purposes. In this IC, one of the output characteristics varied from the standard, therefore failure analysis was performed, which found trace metal elements as one of the causes. By making full use of 3D perspective, it is possible to fabricate a site-specific sample into 0.1 micrometre in thickness without missing a failure point that has very minute quantities of contaminant in a semiconductor device. Using energy dispersive X-ray, it is possible to detect trace metal contamination at levels 1E12 atoms per sq cm. that are conventionally detected only by trace element analysis.

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