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Alkaline basalt light rare earth enrichment Alkaline basalt light rare earth enrichment Alkaline basalt light rare earth enrichment
Generation of continental intraplate alkaline basalts by edge
2023年8月20日 The Liangcheng basalts display oceanisland basalt (OIB) type traceelement patterns, which are, enriched in large ion lithophile elements (LILEs) and light rare earth The rare earth content of alkalirich, silicaundersaturated basalts erupted onto oceanic and continental plates is consistent with their derivation by slight amounts of partial melting of The Rare Earth Content and Origin of AlkaliRich Basalts2018年4月16日 The first consists of dry tholeiitic highalumina olivine basalts that are slightly enriched in highly incompatible elements The second group consists of calcalkaline basalts Origin of Primitive Tholeiitic and Calc‐Alkaline Basalts at Newberry 2007年6月2日 The tholeiitic basalt is enriched in large ion lithophile elements (LILE), light rare earth elements (LREE), depleted in high field strength elements (HFSE) and REE fractionated (PDF) Chemical characteristics of alkaline basalt from the Abor
Continental flood basalts derived from the hydrous mantle
2015年7月14日 Here we demonstrate that hydrothermally altered subducted oceanic crust was involved in generating the late Cenozoic Chifeng continental flood basalts of East Asia This 2024年1月9日 Occurrences of alkaline and carbonatite rocks with high concentrations of rare earth elements (REE) are a defining feature of Precambrian geology in the Mojave Desert of Mafic Alkaline Magmatism and Rare Earth Element Mineralization 2011年7月1日 These flows are collectively characterized by the conjunction of negative normalized anomalies at Nb, Ta, P, and Ti, with light rare earth element enrichment, typical of Geochemistry of alkaline basalts and associated highMg basalts 2020年11月23日 The SSM basalt is a highK to shoshonitic alkali basalt that is characterized by light rare earth element enrichment The trace element features of the basalt are similar to Alkali basalt from the Seifu Seamount in the Sea of Japan: post
Origin of the Site U1504 alkaline basalts in the South China Sea
2024年5月16日 In this study, we present new 40 Ar/ 39 Ar ages, major and trace elements, and SrNdHf isotopic data for the International Ocean Discovery Program Site U1504 alkaline 2021年12月20日 All TNCO Cenozoic basalts are characterized by ocean island basalt (OIB)like trace element patterns, enriched in light rare earth elements (LREE) and large ion lithophile Deciphering the origin of a basanitealkali basalttholeiite suite 2020年10月22日 Such processes make most of arc basalts commonly enriched in large ion lithosphile elements and light rare earth elements, but depleted in highfield strength elements and heavy rare earth elements Small amounts of arc basalts are characterized by relatively high Nb contents or by Nb enrichmentThe origin of arc basalts: New advances and remaining questions2018年4月16日 The second group consists of calcalkaline basalts that contained 2–4 wt % H 2 O prior to eruption and shows strong enrichment in the light rare earth elements, Ba, and Sr, and deficits in Nb, Ta, Hf, and ZrOrigin of Primitive Tholeiitic and Calc‐Alkaline
Alkali Basalt an overview ScienceDirect Topics
Cenozoic sodic alkali basalts represent the dominant basalt type in many continental alkali basalt provinces, including northern Europe, eastern Australia, and eastern China (Zhang and O’Reilly, 1997; Zou et al, 2000; Wilson and Patterson, 2001)Sodic alkali basalts are compositionally similar worldwide (Table 2a) and correspond to basalts and trachybasalts with relatively high 2017年1月23日 Carbonated silicate melts are expected to exist in the mantle, but have been elusive in nature Geochemical analyses of rocks from the South China Sea identify such melts formed in the mantle and Evolution of carbonated melt to alkali basalt in the South China 2021年12月1日 Geochemical Comparision between Sisaket Basalts and basalt from other areas where plant Durian (a) major oxides comparison and (b) light rare earth elements (LREEs) comparison (Boonsoong et al Alteration of High Alkaline and Alkaline Basaltic Rocks: Parent 2020年8月12日 Peralkaline granites and pegmatites are a prime repository of REE and HFSE, critical raw materials Although it is accepted that magmatic processes are fundamental in concentrating these metals, the role of hydrothermal fluids in concentrating and fractionating these elements remains unclear This paper investigates the global reproducibility of the magmatic Alkali pyroxenes and amphiboles: a window on rare earth
Enrichment of Rare Earth Elements During the Weathering of Alkaline
2024年1月1日 Enrichment of Rare Earth Elements During the Weathering of Alkaline Igneous Systems: Insights from the Puxiong RegolithHosted Rare Earth Element Deposit, SW ChinaDownload Citation On Oct 1, 2023, João Carlos Biondi and others published Geology and mineralization of Nb, P, Fe and light rare earth elements of the Araxá alkalinecarbonatite complex, Minas Geology and mineralization of Nb, P, Fe and light rare earth 2016年4月1日 Four conventional mineral deposit types—carbonatite, alkaline igneous, heavy mineral sand, and regolithhosted ionadsorption clay deposits—currently supply global markets with the rare earth (PDF) Rare Metal Deposits Associated with Alkaline2021年12月20日 Basanitealkali basalttholeiite suites are widely distributed in oceans and continents and exhibit a transitional chemical compositional variation, from basanite through alkali basalt and finally to tholeiite, with a gradual increase in silica and decrease in alkali content (Herzberg, 2011; Hofmann, 1997)There has been debate over the origin of this compositional Deciphering the origin of a basanitealkali basalttholeiite suite
Trace element partitioning between clinopyroxene and alkaline
2020年4月13日 Trace element partitioning between minerals and liquids provides crucial constraints on igneous processes We quantified trace element concentrations in clinopyroxene (Cpx) phenocrysts and their phonolite melt inclusions from the 2007–08 eruption of Oldoinyo Lengai (Tanzania), and report Cpxmelt partition coefficients (D) and corresponding 2017年3月1日 The world's largest mined rareearth element deposits are associated with alkaline magmatism, making it important to understand the mechanisms leading to magmatic and hydrothermal element enrichmentLight rareearth element mineralization in hydrothermal veins 2023年2月15日 Rare earth elements (REEs + Y) play an important role in modern industry Heavy REEs whose REE patterns change from HREE depletion to enrichment relative to light REEs (LREEs) Carbonate complexation enhances hydrothermal transport of rare earth elements in alkaline fluids Nat Commun, 13 (2022), p 1456Origin of heavy rare earth elements in highly ScienceDirect1986年1月1日 The present study mainly focuses on identifying evidence of rareearth element (REE) remobilization and enrichment based on petrography, mineral chemistry and wholerock geochemistry of the PCAC Rare earth element abundances in carbonatites, alkaline rocks
(PDF) Petrogenesis of Early Cretaceous alkaline basalts in the
2022年9月30日 Ganjia Alkaline Basalt U – Pb 2205 ± 42 Ma A low degree of partial melting of asthenosphere mantle Yan et al (2012) Ganjia Alkaline Basalt Lithosphere metasomatized by asthenospherederived 2018年6月4日 Plots of 87 Sr/ 86 Sr versus εNd [= ( 143 Nd/ 144 Ndm/0)1) × 10000] of Vietnam alkaline basaltborne mantle xenolith separated clinopyroxenes (empty circles; Hoang et al, 2018 Petrology, geochemistry, and Sr, Nd isotopes of mantle xenolith in to shoshonitic alkali basalt that is characterized by light rare earth element enrichment The trace element features of the basalt are similar to those of ocean island basalt, although the Yb content is much higher, indicating formation by the lowdegree partial melting of spinel peridotite The Nd, Sr, and Pb isotopic compositions of the SSM Alkali basalt from the Seifu Seamount in the Sea of Japan: post 2021年12月3日 Alkaline igneous rocks host many global highfieldstrength element (HFSE) and rareearth element (REE) deposits While HFSEs are commonly assumed to be immobile in hydrothermal systems, transport Quantifying metasomatic highfieldstrength and rareearth
Rare Earth Element Deposits of Alkaline Igneous Rocks
An overall model for development of this intrusion can be divided into three episodes: (1) generation of a Light Rare Earth Element (LREE)enriched parental magma due to enrichment of the mantle source by subduction of pelagic carbonates; (2) early crystallisation of allanite in melasyenite, due to the saturation of the magma in the LREE; and (3) hydrothermal alteration, 2024年1月9日 Occurrences of alkaline and carbonatite rocks with high concentrations of rare earth elements (REE) are a defining feature of Precambrian geology in the Mojave Desert of southeastern CaliforniaMafic Alkaline Magmatism and Rare Earth Element 2007年6月2日 The tholeiitic basalt is enriched in large ion lithophile elements (LILE), light rare earth elements (LREE), depleted in high field strength elements (HFSE) and REE fractionated nature [(La/Yb) N (PDF) Chemical characteristics of alkaline basalt from 2021年12月20日 Many layers of altered basalts, scoria, alkali basalt, and nepheline basanite are associated as strata rank between medium to thick layers Geochemical data demonstrate that the studied basalts have very high alkaline, alkaline earth, light rare earth elements (LREEs), especially K 2 O and MgOAlteration of high alkaline and alkaline basaltic rocks: parent
Controls on the behaviors of rare earth elements in acidic and alkaline
2022年8月1日 Understanding the rare earth elements (REE) behaviors in aqueous system is important to reveal groundwater sources, waterrock interactions, mixing and redox environments (Bau, 1991; Johannesson et al, 1997; Tang and Johannesson 2006; Guo et al, 2010; Noack et al, 2014; Liu, 2018; Deluca et al, 2020; Liu et al, 2021), which also have potential 1996年12月1日 The results show that (1) plagioclases are mainly bytownite and labradorite with subordinate andesine, which are enriched in light rare earth elements (LREE) and some largeion lithophile elements (PDF) Trace and rare earth elements geochemistry of alkaline rocks 2017年1月23日 Carbonated silicate melts were converted to alkali basaltic melts through reactions with the lithospheric mantle, during which precipitation of apatite accounts for reduction of light rare earth Evolution of carbonated melt to alkali basalt in the South China 2018年9月8日 Quartz syenites from the Prakasam alkaline province, Southern India; A comparative study with special emphasis on their rare earth element contents(PDF) Quartz syenites from the Prakasam alkaline province,
Generation of continental intraplate alkaline basalts by edge
2023年5月1日 The presence of phlogopite in some Sanyitang websterites, coupled with strong enrichments in both light rare earth elements and large ion lithophile elements, as well as high ⁸⁷Sr/⁸⁶Sr (0 Alkali olivine basalt is the most abundant type in alkalic OIB suites, but more alkalic lavas, such as basanite and nephelinite, also commonly erupt in Niu et al, 2012), (6) light rareearth elements enrichment not related to mantle plume (Hirano et al Alkaline basalt: NORBRAS26D107 (point 26) North Brazilian Ridge: 000901 –41Ocean Island Basalt an overview ScienceDirect Topics2017年7月25日 Alkaline igneous complexes host deposits of rare earth elements (REE), which represent one of the most economically important resources of heavy REE and Yttrium (Y) The hosts are differentiated rocks ranging from nepheline syenites and trachytes to peralkaline granites These complexes usually occur in continental withinplate tectonic settings Rare Earth Element Deposits of Alkaline Igneous Rocks MDPI2020年10月22日 Such processes make most of arc basalts commonly enriched in large ion lithosphile elements and light rare earth elements, but depleted in highfield strength elements and heavy rare earth elements Small amounts of arc basalts are characterized by relatively high Nb contents or by Nb enrichmentThe origin of arc basalts: New advances and remaining questions
Origin of Primitive Tholeiitic and Calc‐Alkaline
2018年4月16日 The second group consists of calcalkaline basalts that contained 2–4 wt % H 2 O prior to eruption and shows strong enrichment in the light rare earth elements, Ba, and Sr, and deficits in Nb, Ta, Hf, and ZrCenozoic sodic alkali basalts represent the dominant basalt type in many continental alkali basalt provinces, including northern Europe, eastern Australia, and eastern China (Zhang and O’Reilly, 1997; Zou et al, 2000; Wilson and Patterson, 2001)Sodic alkali basalts are compositionally similar worldwide (Table 2a) and correspond to basalts and trachybasalts with relatively high Alkali Basalt an overview ScienceDirect Topics2017年1月23日 Carbonated silicate melts are expected to exist in the mantle, but have been elusive in nature Geochemical analyses of rocks from the South China Sea identify such melts formed in the mantle and Evolution of carbonated melt to alkali basalt in the South China 2021年12月1日 Geochemical Comparision between Sisaket Basalts and basalt from other areas where plant Durian (a) major oxides comparison and (b) light rare earth elements (LREEs) comparison (Boonsoong et al Alteration of High Alkaline and Alkaline Basaltic Rocks: Parent
Alkali pyroxenes and amphiboles: a window on rare earth
2020年8月12日 Peralkaline granites and pegmatites are a prime repository of REE and HFSE, critical raw materials Although it is accepted that magmatic processes are fundamental in concentrating these metals, the role of hydrothermal fluids in concentrating and fractionating these elements remains unclear This paper investigates the global reproducibility of the magmatic 2024年1月1日 Enrichment of Rare Earth Elements During the Weathering of Alkaline Igneous Systems: Insights from the Puxiong RegolithHosted Rare Earth Element Deposit, SW ChinaEnrichment of Rare Earth Elements During the Weathering of Alkaline Download Citation On Oct 1, 2023, João Carlos Biondi and others published Geology and mineralization of Nb, P, Fe and light rare earth elements of the Araxá alkalinecarbonatite complex, Minas Geology and mineralization of Nb, P, Fe and light rare earth 2016年4月1日 Four conventional mineral deposit types—carbonatite, alkaline igneous, heavy mineral sand, and regolithhosted ionadsorption clay deposits—currently supply global markets with the rare earth (PDF) Rare Metal Deposits Associated with Alkaline
Deciphering the origin of a basanitealkali basalttholeiite suite
2021年12月20日 Basanitealkali basalttholeiite suites are widely distributed in oceans and continents and exhibit a transitional chemical compositional variation, from basanite through alkali basalt and finally to tholeiite, with a gradual increase in silica and decrease in alkali content (Herzberg, 2011; Hofmann, 1997)There has been debate over the origin of this compositional