Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s12517-013-0963-9 |
U-series isotopic composition of kasolite associated with aplite-pegmatite at Jabal Sayid, Hijaz region, Kingdom of Saudi Arabia | |
Dawood, Yehia H.1; Abd El-Naby, Hamdy H.1; Ghaleb, Bassam2 | |
通讯作者 | Dawood, Yehia H. |
来源期刊 | ARABIAN JOURNAL OF GEOSCIENCES
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ISSN | 1866-7511 |
EISSN | 1866-7538 |
出版年 | 2014 |
卷号 | 7期号:7页码:2881-2892 |
英文摘要 | Uranium and thorium isotopic composition of kasolite [Pb(UO2)SiO4-(H2O)] from Jabal Sayid area was determined by thermal ionization mass spectrometry. Secondary electron imaging, back-scattered electron imaging, and energy dispersive spectral scans were used to investigate the mineralogical characteristics of this uranyl mineral phase. Distinct crystal faces and crystal growth of kasolite from the study area confirm mineral precipitation near the surface from the circulating groundwater. The obtained data were used to interpret the mechanism of uranium mobility in Jabal Sayid weathering profile and to construct a tentative model to explain the isotopic evolution of uranium and thorium. This model indicates that (1) uranium was leached at depth, (2) uranyl mineralization was precipitated along fractures and cavities in the host rocks during humid conditions and pluvial periods, (3) preferential leaching of U-234 from uranyl mineralization by recoil processes was continuous indicative of a weakly circulating groundwater, and (4) U-234-deficiency resulted in isotopic signatures characterized by low U-234/U-238 and high Th-230/U-234 ratios. The modification pattern of these activity ratios suggests that uranyl mineralization of Jabal Sayid, most probably, has been precipitated during the same Late Quaternary pluvial periods responsible for the formation of the corresponding mineralizations in the Eastern Desert of Egypt. |
英文关键词 | Uranyl mineralization U-series Activity ratio Supergene deposits Arabian Nubian Shield |
类型 | Article |
语种 | 英语 |
国家 | Saudi Arabia ; Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000338217500029 |
WOS关键词 | CENTRAL EASTERN DESERT ; SECONDARY URANIUM DEPOSITS ; PLUVIAL EPISODES ; WESTERN DESERT ; MINERALS ; AREA ; ORE ; AGE ; MINERALIZATION ; CONSTRAINTS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/180786 |
作者单位 | 1.King Abdulaziz Univ, Fac Earth Sci, Jeddah 21589, Saudi Arabia; 2.Univ Quebec Montreal, GEOTOP UQAM McGILL, Montreal, PQ H3C 3P, Canada |
推荐引用方式 GB/T 7714 | Dawood, Yehia H.,Abd El-Naby, Hamdy H.,Ghaleb, Bassam. U-series isotopic composition of kasolite associated with aplite-pegmatite at Jabal Sayid, Hijaz region, Kingdom of Saudi Arabia[J],2014,7(7):2881-2892. |
APA | Dawood, Yehia H.,Abd El-Naby, Hamdy H.,&Ghaleb, Bassam.(2014).U-series isotopic composition of kasolite associated with aplite-pegmatite at Jabal Sayid, Hijaz region, Kingdom of Saudi Arabia.ARABIAN JOURNAL OF GEOSCIENCES,7(7),2881-2892. |
MLA | Dawood, Yehia H.,et al."U-series isotopic composition of kasolite associated with aplite-pegmatite at Jabal Sayid, Hijaz region, Kingdom of Saudi Arabia".ARABIAN JOURNAL OF GEOSCIENCES 7.7(2014):2881-2892. |
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