Lead isotope analyses from Tell Abraq, United Arab Emirates: new data regarding the ‘tin problem’ in Western Asia

Antiquity ◽  
1999 ◽  
Vol 73 (279) ◽  
pp. 49-64 ◽  
Author(s):  
Lloyd Weeks

The ‘tin problem’ forms the focus for discussion on the earliest use of tin and bronze in western Asia and the Aegean. New research on lead isotope data from Tell Abraq in the UAE has important implications for the advent of bronze in the region.

1986 ◽  
Vol 23 (10) ◽  
pp. 1568-1575 ◽  
Author(s):  
R. I. Thorpe ◽  
M. D. Goodz ◽  
I. R. Jonasson ◽  
J. Blenkinsop

Twenty-seven lead-isotope analyses for galena specimens from 14 localities in the Cobalt district represent sulphide-rich interflow sedimentary units in the Archean volcanic sequence, mineralized zones, fracture fillings, and local sulphide concentrations in the Cobalt Group (Proterozoic) sedimentary rocks, and vein-filling and breccia-cementing sulphides from within and near silver–arsenide veins. The analyses define a very homogeneous composition, averaging 206Pb/204Pb = 14.732, 2O7Pb/204Pb = 15.114, and 208Pb/204Pb = 34.301, for lead from these different geological settings. This result is in agreement with textural observations indicating a late paragenetic position for galena in the different settings mentioned. The model age for this lead is in general accord with the U–Pb age obtained in a study by Andrews et al. for a Nipissing diabase sheet at Gowganda.About one third of the galena specimens are interpreted by a two-stage evolution model to have formed or been remobilized during an event in the time range 1650–1945 Ma. The timing and character of this event are not clearly defined. The radiogenic composition of a specimen from the Pan Silver property is comparable to radiogenic values reported by Thorpe and suggests a young galena-forming event in the area.The lead-isotope data are permissive evidence for a genetic link between the Nipissing diabase sheets and mineralization of a variety of types in the Cobalt district. The metal source is not clearly indicated, but one analysis for Archean interflow sulphides suggests than an Archean source is unlikely for the lead in the silver–arsenide veins and other mineralized zones.


2021 ◽  
Vol 37 ◽  
pp. 102970
Author(s):  
Takeshi Minami ◽  
Akinori Takeuchi ◽  
Setsuo Imazu ◽  
Masayoshi Okuyama ◽  
Yu Higashikage ◽  
...  

2019 ◽  
Vol 489 (2) ◽  
pp. 170-173
Author(s):  
I. Yu. Badanina ◽  
E. A. Belousova ◽  
K. N. Malitch ◽  
S. F. Sluzhenikin

This study presents the first results of oxygen isotope analyses (18O) collected on zircons from the Talnakh economic intrusion within the Norilsk province. Zircons from gabbro-diorite, gabbroic rocks of the layered series and plagioclase-bearing wehrlite have similar mantle-like mean 18O values (5,39 0,49; 5,64 0,48 and of 5,28 0,34, respectively), which differ from 18O in zircons from sulfide-bearing melanocratic troctolite with a taxitic texture in the lower part of the intrusion (mean 18O = 6,50 0,98). These new oxygen isotope data support (i) the mantle-derived origin of the primary magma(s), parental to the Talnakh intrusion, and (ii) possible involvement of a crustal component during the formation of sulfide-bearing taxitic-textured rocks.


Author(s):  
Debra L. Martin ◽  
Kathryn M. Baustian ◽  
Anna J. Osterholtz

The tomb at Tell Abraq (c. 2200–2000 BC) was the repository for over 400 individuals of all ages and sexes. Situated on the Arabian Gulf near Sharjah and Um al-Quwain in the United Arab Emirates, the tomb contained the commingled remains of at least 276 adults and 127 subadults. Of the subadults, there was a relatively high frequency of premature (28%) and newborn (9%) infants in the tomb. This overview provides the demographic structure of the tomb population based on a detailed MNI study and the complex nature of the mortuary program. Based on the overall MNI determined by the talus bone, observed versus expected ratios show that many long bones and hands and feet bones are underrepresented. We propose that these can be accounted for by other excavation and retrieval strategies. The mortuary program appears to be what Boz and Hager have described as being “primary disturbed.” Grossly underrepresented elements, such as the cranium, could have been removed and used in other contexts. This late Bronze Age tomb is unusual in many ways and does not fit any Umm an Nar patterns.


2016 ◽  
Vol 12 (5) ◽  
pp. 161
Author(s):  
Saif Alnaqbi

<p class="a"><span lang="EN-US">The goal of this study is to examine the internal and external effect of students’ attitude towards the intention to enter the vocational education in the UAE through examining the different factors of attitude such as social, individual, demographic and organization. Because of the inconsistent results, for further investigation, a new research has established through introducing new and different variables that may better explain the nature of that relationships and issues. In the literature, many theories have suggested that link between variables such as Theory of Planned Behavior (TPB), The Theory of Reasoned Action (TRA), and Social Cognitive Theory (SCT). Questionnaires were distributed to 700 students. 549 questionnaires were returned and using in the analysis using SPSS software version 18.0 through descriptive an inferential statistics. In addition, Independent T-test and Scheffe' test were used to test and hypothesized the hypotheses. So, the results of this study showed that there are significant differences in the parents’ responses between Social factors of vocational education according to their gender and the region either urban or rural. In another hands, the result of the students was found to have significant differences of the attitudes and importance in rural and urban regions. In addition to that, all parents either in government or private sectors agreed the importance and vocational education future for their children. Moreover, the culture in both sectors is differently seen by society in terms of the vocational education. This study also supported the premises of the TRA, TPB, and SCT theories by reaffirming the importance of the study’s variables for supporting the intention of the students towards the vocational education.</span></p>


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