Matches in SemOpenAlex for { <https://semopenalex.org/work/W2352946099> ?p ?o ?g. }
Showing items 1 to 53 of
53
with 100 items per page.
- W2352946099 abstract "Based on regional geological investigation and detailed petrological,contact relationship,isotope age and geochemical studies,this paper has dealt with geochemical characteristics and tectonic environments of granites in such rock bodies as Late Caledonian Baihua intrusive,Xiongshangou intrusive,Early Variscan Dangchuan intrusive and Huoyanshan intrusive in southern Tianshui area.The Baihua intrusive has low potassium content(K2O/Na2O=0.13～0.91),low aluminum(A/CNK = 0.74～0.78),low Nb,Zr and rare earth elements(ΣREE=107.71×10-6～191.13×10-6) and rich trace elements Cr,Ni,Y,Rb,Sr;the early rock of the Xiongshangou intrusive has low K2O(K2O/Na2O=0.33～0.42),whereas the late rock has rich K2O(K2O/Na2O=1.01～1.43) and trace elements Th,Hf,Nb,Zr;the Late Caledonian intrusives have some common characteristics:their rocks belong to tholeiitic-calc-alkaline series with enriched rare earth elements;they have no or indistinctive Eu negative anomalies and low δ18O(δ18O=+3.32‰),showing characteristics of I-type granite.The Xiongshangou intrusive derived its materials from the lower crust;the Baihua intrusive was formed in an island-arc tectonic environment;the Dangchuan intrusive is enriched in SiO2(SiO2=72.29%～73.40%),K2O(K2O/Na2O =0.86～2.01),and Al2O3(A/CNK=1.05～1.20);the Huoyanshan intrusive contains low SiO2(69.70% on average) and high K2O(K2O/Na2O=1.14～1.88),Fe2O3+FeO and MgO.The Early Variscan intrusives show the following common characteristics:their rocks belong to shoshonitic series,with high Al2O3(A/CNK1.0) and abundant such large ion lithophile elements as Ba,Zr,Rb,Sm,Ta,Rb,Ba,Th and Nb;with high race earth elements,they have distinct negative Eu anomalies and low δEu(δEu=0.36～0.61);(87Sr/86Sr)00.707 0,with high δ18O(δ18O=+8.89‰～+11.08‰);they thus belong to medium strontium granite,with source materials derived from the earth's crust,belonging to S-type granite;they were formed in a post-collision tectonic environment or a post-orogenic tectonic environment." @default.
- W2352946099 created "2016-06-24" @default.
- W2352946099 creator A5065823073 @default.
- W2352946099 date "2008-01-01" @default.
- W2352946099 modified "2023-09-25" @default.
- W2352946099 title "Granite geochemistry and tectonic environments of Tianshui area in North Qinling orogenic belt" @default.
- W2352946099 hasPublicationYear "2008" @default.
- W2352946099 type Work @default.
- W2352946099 sameAs 2352946099 @default.
- W2352946099 citedByCount "0" @default.
- W2352946099 crossrefType "journal-article" @default.
- W2352946099 hasAuthorship W2352946099A5065823073 @default.
- W2352946099 hasConcept C127313418 @default.
- W2352946099 hasConcept C151730666 @default.
- W2352946099 hasConcept C17409809 @default.
- W2352946099 hasConcept C1965285 @default.
- W2352946099 hasConcept C2776698055 @default.
- W2352946099 hasConcept C2983155866 @default.
- W2352946099 hasConcept C77928131 @default.
- W2352946099 hasConceptScore W2352946099C127313418 @default.
- W2352946099 hasConceptScore W2352946099C151730666 @default.
- W2352946099 hasConceptScore W2352946099C17409809 @default.
- W2352946099 hasConceptScore W2352946099C1965285 @default.
- W2352946099 hasConceptScore W2352946099C2776698055 @default.
- W2352946099 hasConceptScore W2352946099C2983155866 @default.
- W2352946099 hasConceptScore W2352946099C77928131 @default.
- W2352946099 hasLocation W23529460991 @default.
- W2352946099 hasOpenAccess W2352946099 @default.
- W2352946099 hasPrimaryLocation W23529460991 @default.
- W2352946099 hasRelatedWork W2002916232 @default.
- W2352946099 hasRelatedWork W2040455392 @default.
- W2352946099 hasRelatedWork W2348337302 @default.
- W2352946099 hasRelatedWork W2353595225 @default.
- W2352946099 hasRelatedWork W2354230052 @default.
- W2352946099 hasRelatedWork W2356540219 @default.
- W2352946099 hasRelatedWork W2357150804 @default.
- W2352946099 hasRelatedWork W2358639132 @default.
- W2352946099 hasRelatedWork W2360963566 @default.
- W2352946099 hasRelatedWork W2361185300 @default.
- W2352946099 hasRelatedWork W2362131332 @default.
- W2352946099 hasRelatedWork W2367429952 @default.
- W2352946099 hasRelatedWork W2372203101 @default.
- W2352946099 hasRelatedWork W2381589131 @default.
- W2352946099 hasRelatedWork W2385226300 @default.
- W2352946099 hasRelatedWork W2385480946 @default.
- W2352946099 hasRelatedWork W2387587338 @default.
- W2352946099 hasRelatedWork W2394032809 @default.
- W2352946099 hasRelatedWork W2898498894 @default.
- W2352946099 hasRelatedWork W3141332400 @default.
- W2352946099 isParatext "false" @default.
- W2352946099 isRetracted "false" @default.
- W2352946099 magId "2352946099" @default.
- W2352946099 workType "article" @default.