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References (35)
-
F. Frey, M. Prinz (1978)
Ultramafic inclusions from San Carlos, Arizona: Petrologic and geochemical data bearing on their petrogenesisEarth and Planetary Science Letters, 38
-
Mark Johnson, M. Rutherford (1989)
Experimental calibration of the aluminum-in-hornblende geobarometer with application -
J. Didier, B. Barbarin (1991)
Enclaves and granite petrology -
(1986)
The origin of intrusive mass in Fengshan -
D. Perkins, S. Chipera (1985)
Garnet-orthopyroxene-plagioclase-quartz barometry: refinement and application to the English River subprovince and the Minnesota River valleyContributions to Mineralogy and Petrology, 89
-
(1978)
, 1984 , On chemical characteristics of calcic amphiboles from igneous rocks and their pet - rogenesis significance -
(1991)
Structures in metosediment inclusions as “windows ” into granite source regions. 2nd Hutton Symposium, Canbeera, Abstracts -
Hanyeang Lee, J. Ganguly (1988)
Equilibrium Compositions of Coexisting Garnet and Orthopyroxene: Experimental Determinations in the System FeO-MgO-Al2O3-SiO2, and ApplicationsJournal of Petrology, 29
-
(1993)
40 Ar / 39 Ar Chronology of intrusive rocks from Tongling -
(1991)
Structures in metosediment inclusions as "windows " into granite source regions. 2nd Hutton Symposium, Canbeera, Abstracts. Canberra: Bureau of Mineral Resources -
Bohlen (1983)
Experimental investigation and application of equilibrium in the system FeO-TiO2-Al2O3-SiO2-H2OAmerican Mineralogist, 68
-
(1984)
On chemical characteristics of calcic amphiboles from igneous rocks and their petrogenesis significance -
E. Jagoutz, H. Palme, H. Baddenhausen, K. Blum, M. Cendales, G. Dreibus, B. Spettel, V. Lorenz, H. Wanke (1979)
THE ABUNDANCES OF MAJOR, MINOR, AND TRACE ELEMENTS IN THE EARTH'S MANTLE AS DERIVED FROM PRIMITIVE ULTRAMAFIC NODULES. -
(1994)
On geneses of microgranitoid enclaves -
Johnson Johnson, Rutherford Rutherford (1989)
Experimental calibration of the aluminum‐in‐hornblende geobarometer with application to Long Valley Caldera (California) volcanic rocksGeology, 71
-
J. Hammarstrom, E. Zen (1986)
Aluminum in hornblende; an empirical igneous geobarometerAmerican Mineralogist, 71
-
(1986)
Characteristics of Cognate inclusions in intermediate - acid intrusive rocks of Tongling area and their magmatic dynamics -
Powell Powell, Holland Holland (1987)
An internally consistent thermodynamic dataset with uncertainties and correlations: 3. Applications to geobarometry, worked examples and a computer programJournal of Metamorphic Geology, 6
-
R. Powell, T. Holland (1988)
An internally consistent dataset with uncertainties and correlations: 3. Applications to geobarometry, worked examples and a computer programJournal of Metamorphic Geology, 6
-
S. Bohlen, V. Wall, A. Boettcher (1983)
Experimental investigations and geological applications of equilibria in the system FeO-TiO 2 -Al 2 O 3 -SiO 2 -H 2 OAmerican Mineralogist, 68
-
(1994)
Classification and nomenclature on the enclaves in acidic-intermediate acidic igneous rocks. Geoscience -
(1986)
The origin of intrusive mass in Fengshandong, Hubei province -
J. Ague (1997)
Thermodynamic calculation of emplacement pressures for batholithic rocks, California: Implications for the aluminum-in-hornblende barometerGeology, 25
-
A. Castro, I. Moreno-Ventas, J. Rosa (1990)
Microgranular enclaves as indicators of hybridization processes in granitoid rocks, Hercynian Belt, SpainGeological Journal, 25
-
Wu works with the Institute of Geology -
S. Harley (1984)
An experimental study of the partitioning of Fe and Mg between garnet and orthopyroxeneContributions to Mineralogy and Petrology, 86
-
(1984)
On chemical characteristics of calcic amphiboles from igneous rocks and their petrogenesis significance. Minerals and Rocks -
(1994)
Classification and nomenclature on the enclaves in acidic - intermediate acidic igneous rocks -
S. Sen, A. Bhattacharya (1984)
An orthopyroxene-garnet thermometer and its application to the Madras charnockitesContributions to Mineralogy and Petrology, 88
-
B. Leake (1978)
Nomenclature of AmphibolesMineralogical Magazine, 42
-
(1994)
Crystallization characteristics and genesis of the zircon group in intermediate-acid intrusive rocks of Tongling area -
(1987)
The main characteristics and petrological significance of low-pressure clinopyroxenes in the Cenozoic basalts from eastern China -
M. Foster, T. Nolan (1960)
Interpretation of the composition of trioctahedral micas -
D. Moecher, E. Essene, L. Anovitz (1988)
Calculation and application of clinopyroxene-garnet-plagioclase-quartz geobarometersContributions to Mineralogy and Petrology, 100
-
Leake Leake (1978)
Nomenclature of amphibolesBull. Min., 101
- Publisher
- Wiley
- Copyright
- 2000 Geological Society of China
- ISSN
- 1000-9515
- eISSN
- 1755-6724
- DOI
- 10.1111/j.1755-6724.2000.tb00431.x
- Publisher site
- See Article on Publisher Site
Abstract
Abstract: Enclaves in intermediate‐acid plutons from Tongling can be divided into three types: xenoliths, relics and magmatogenic enclaves. The magmatogenic enclaves consist of cumulates, micrograined dioritite mixtite and dioritic chilled border enclaves. Petrologically, relics with eyed and meta‐poikilitic texture are characterized by high content of biotite (>80%) and low content of cordierite and grossular. The cumulates with accumulate texture consist of a great amount of pyroxene, hornblende and minor spinel and phlogopite. The micrograined dioritic mixtite is composed of more hornblendes and feldspar and less needle apatites and an ellipsoid basic core included in plagioclase. The chilled border enclaves have the same mineral association, but more dark minerals than the host rocks consisting of plagioclase, quartz, alkaline feldspar, hornblende and biotite. Geochemically, the relics exhibit high REE content (455.8×10−6) and high ratio of LREE/HREE, more obvious Eu negative anomaly and are rich in Cr and Ni, poor in Ba, Nb and Sr. All kinds of magmatogenic enclaves have the same REE pattern without Eu anomaly, and the total REE is 74.9×10−6 for spinel pyroxene cumulate, 179.7×10−6 for hornblende cumulate, 226.9 × 10−6 for hornblende cumulate crystal, 289.9×10−6 for micrograined dioritic mixtite and 131.2×10−6 for chilled border enclaves. Calculation with the thermometer and barometer for minerals shows that the temperature and pressure of formation are 1126 °C and 8.44 kbar (7.15–9.04 kbar) for the spinel pyroxene cumulate, 1065 °C‐1029 °C and 8.23 kbar (7.13–9.50 kbar) for the hornblende pyroxene cumulate, 959 °C and 3.40 kbar (2.86–4.09 kbar) for the micrograined dioritic mixtite enclaves, and 951 °C and 0.59 kbar for the dioritic chilled border enclaves, respectively. Thus, the following conclusions can be drawn. Relic enclaves were derived from the crustal partial melting and all cumulate enclaves originated from deep magma chambers near the Moho in the lower crust, which are cumulate fragments formed by fractional crystallization of basic magma; mixtite came from shallow magma chambers in the middle‐upper crust, formed by the mixture of mantle‐derived magma and acid magma derived from the crustal partial melting; and the chilled border enclaves came from the border fragments of early intrusive bodies.
Journal
Acta Geologica Sinica (English Edition) – Wiley
Published: Mar 1, 2000