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Reversely Zoned Compositional Variations and their Origins of the Andong Pluton, Andong Batholith, Korea  

황상구 (안동대학교 지구환경과학과)
이보현 (안동대학교 지구환경과학과)
Publication Information
Economic and Environmental Geology / v.35, no.1, 2002 , pp. 75-95 More about this Journal
Abstract
The Andong pluton in the Andong Batholith is composed of comagmatic plutonic rocks, in which the lithofacies comprise hornblende biotite tonalite in the central paft biotite granodiorite in the marginal paft and porphyritic biotite granite at the topside (noJthea~tern paft) of the pluton. The pluton is petrographically and petrochemically zoned, having more mafic center than margin and topside. Distribution pallern of the lithofacies represents a reverse zoning in the pluton. Modal and chemical data in the pluton show progressive and gradual compositional variations from the centrer via the margin to the topside. Quartz and K-teldspar increase toward the topside of the pluton, whereas hornblende, biotite and color index increase toward the center. The bulk composition in the pluton is also reversely zoned, with high $Si0_2$ and $K_{2}O$ in the topside facies, and high MnO, CaO, $Ti0_2$, $Fe_{2}O_{3}$t, MgO and $P_{2}O_{5}$ in the central facies. The reverse zoning is also evident in higher Cr. V, Ni, Sc and Sr of the more mafic tonalite in the interior. The reversely zoned pluton results from remobilization (resurgence) of the lower more mafic compositional zone into the upper more felsic zones of the pluton modified by thennogravitational diffusion and fractional crystallization. In the initial stages of evolution, the pluton was a petrochemical system that fonned chemical compositional zonation with mafic tonalitic magma in the lower. granodioritic one in the middle and granitic one in the upper paft of the magma chamber. Periodic influxes of more mafic magma from the ba~e resulted in mingling of liquids and redistribution of minerals, and may have triggered the remobilil.ation of the lower compositional zone into the upper more felsic zones.
Keywords
Andong pluton; reversely zoning; thermogravitational diffusion; fractional cystallization; chemical compositional zonation; remobilization;
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Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Petrology and geochemistry of the Youngju and Andong granites in the northeastern Yeongnam massif /
[ Lee, J.I.;Jwa, Y.-J.;Park, J.-H.;Lee, M.J.;Moute, J. ] / Korea. Geosci. J.   과학기술학회마을   DOI
2 A guide to the chemical classification of the common igneous rocks /
[ Irvine, T.N.;Baragar, W.R. ] / Can. J. Earth Sci.   DOI
3 Crystallization of West Farrington pluton, North Carolina, U.S.A. /
[ Ragland, P.C.;Butler, J.R. ] / J. Petrol.   DOI
4 /
[ 김남장;강필종;이홍규 ] / 한국지질도 중평동 도폭
5 Magma convection, Temperature distribution, and differentiation. /
[ Bartlett, R.W. ] / Am. J. Sci.   DOI
6 /
[ 김봉균;이하영;김수진;정지곤 ] / 안동도폭 지질보고서
7 Ash-flow magmatism. /
[ Smith, R.L. ] / Geol. Soc. Am. Special Paper   DOI
8 안동저반의 암상과 다상 정치 /
[ 황상구;장태우;김정민;안웅산;이보현 ] / 지질학회지   과학기술학회마을
9 The Bishop Tuff: evidence for the origin of compositional zonation in silicic magma chambers /
[ Hildreth, W. ] / Geol. Soc. Am. Special Paper   DOI
10 Rb-Sr and O isotopic relationships in 3 zoned Caledonian granitic plutons, Southern Uplands, Scotland. /
[ Halliday, A.N.;Stephens, W.E.;Harmon, R.S. ] / J. Geol. Soc.London   DOI
11 /
[ 윤석규;차문성;김정진;이종덕 ] / 예천도폭 지질보고서
12 Multiple sources for the Coastal Batholith of central Chile(31-34°S): geochemical and Sr-Nd isotopic evidence and tectonic implications. /
[ Parada, M.A.;Nystrom, J.O.;Levi, B. ] / Lithos   DOI
13 /
[ 이민성;박봉순;김정환 ] / 영주도폭 지질보고서
14 Crystallization, fractionation, and solidification of the Tuolumne Intrusive Series, Yosemite National Park, California. /
[ Bateman, P.C.;Chappell, B.W. ] / Geol. Soc. Am. Bull.   DOI
15 Calc-alkalline I-type plutonism in the Andong batholith. /
[ Hwang, S.K.;Kim, J.M.;Ahn, U.S.;Lee, B.H. ] / Abstracts of the 2001 annual congress of Geol. Soc. Korea
16 Fusion relationships in the system <TEX>$NaAlSi_3O_8-CaAl_2Si_2O_8-KAlSi_3O_8-SiO_2-H_2O$</TEX> and generation of granitic magmas in the Sierra Navada batholith. /
[ Presnall, D.C.;Bateman, P.C. ] / Geol. Soc. Am. Bull.   DOI
17 Causes of geochemical diversity in peraluminous granitic plutons: the Jalama pluton, Central-Iberian Zone (Spain and Portugal) /
[ Ramirez, J.A.;Grundvig, S. ] / Lithos   DOI   ScienceOn
18 K-feldspar megacrysts in granites-phenocrysts, not porphyroblasts /
[ Vernon, R.H. ] / Earth Sci. Rev.   DOI   ScienceOn
19 /
[ 이대성;이하영 ] / 한국지질도 예안도폭
20 Geochemistry and petrogenesis of the granitic rocks in the vicinity of the Mt. Sorak. /
[ Min, K.-W.;Kim, S.-B. ] / J. Petrol. Soc. Korea   과학기술학회마을
21 Mineralogy and petrology on the granitic rocks in the Youngju area, Kyoungsang Buk-do, Korea /
[ Lee, J.I.;Lee, M.S. ] / J. Geol. Soc. Korea
22 A petrogenetic study of the Rosses granite Complex, Donegal. /
[ Hall, A. ] / J. Petrol.   DOI
23 Relative timing of shear zone formation and granite emplacement in the Yechon shear zone, Korea /
[ Chang, T.W. ] / J. Korea Inst. Mining Geol.
24 Field relations and petrology of the Andong granitoid pluton, the Andong batholith. /
[ Hwang, S.K.;Lee, B.H.;Ahn, U.S. ] / Abstract of the 2001 annual congress of Geol. Soc. Korea
25 The coastal batholith of central Peru. /
[ Cobbin, E.J.;Pitcher, W.S. ] / J. Geol. Soc. London   DOI
26 Gradients in silicic magma chambers: Implications for lithospheric magmatism. /
[ Hildreth, W. ] / J. Geophys.1 Res.   DOI
27 /
[ Henderson, P. ] / Rare earth element geochemistry
28 Flowage differentiation: limitation of the "Bagnold Effect" to the narrow intrusions. /
[ Barriere, M. ] / Contrib. Mineral. Petrol.   DOI
29 Comments on viscosity, crystal settling, and convection in granitic magmas /
[ Shaw, H.R. ] / Am. J. Sci.   DOI
30 Eruption volume, periodicity, and caldera area: relationships and inferences on development of compositional zonation in silicic magma chambers /
[ Spera, F.J.;Crisp, J.S. ] / J. Volcanol. Geotherm. Res   DOI   ScienceOn
31 Chemical evolution of a Pleistocene rhyolitic center: Sierra La Primavera, Jalisco, Mexico. /
[ Mahood, G.A. ] / Contrib. Mineral. Petrol.   DOI
32 Flowage differentiation. /
[ Bhattacharji, S.;Smith, C.H. ] / Science   DOI
33 안동저반 /
[ 황상구 ] / 2000년도 학술답사 가이드북
34 Solidification of the Mount Givens granodiorite, Sierra Nevada, California. /
[ Bateman, P.C.;Nokleberg, W.J. ] / J. Geol.   DOI
35 Differentiation in waxing and waning magma chambers (abs.) /
[ Mahood, G.;Fridrich, C. ] / Geol. Soc. Am. Abstracts with Programs
36 Mineral and chemical variations within an ash-flow sheet from Aso caldera, southwestern Japan. /
[ Lipman, P.W. ] / Contrib. Mineral. Petrol   DOI
37 Compositional variation in the Tunk Lake Granite Pluton, southeastern Maine. /
[ Karner, F.R. ] / Geol. Soc. Am. Bull.   DOI
38 Convective fractionation: A mechanism to provide cryptic zoning (maccrosegregation), layering, crescumulates, banded tuffs and explosive volcanism in igneous processes /
[ Rice, A. ] / J. Geophys. Res.   DOI
39 영주저반의 부석암체 내에서 공간적 조성변화와 그 성인 /
[ 황상구;안웅산;김상욱 ] / 자원환경지질   과학기술학회마을
40 Flow differentiation in igneous dikes and sills: Profiles of velocity and phenocryst concentration /
[ Komar, P.D. ] / Geol. Soc. Am. Bull.   DOI