Magmatic underplating, extension, and crustal reequilibration: Insights from a cross-section through the Ivrea Zone and Strona-Ceneri Zone, northern Italy

被引:138
作者
Henk, A
Franz, L
Teufel, S
Oncken, O
机构
[1] Universität Würzburg, D-97070 Würzburg
[2] GeoForschungsZentrum, D-14473 Potsdam, Telegrafenberg
关键词
D O I
10.1086/515932
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
The thermal impact of magmatic underplating at various crustal levels is studied along a traverse through the Ivrea-Verbano Zone and Strona-Ceneri Zone in northern Italy. Geochronological and petrologic data are compared to a two-dimensional thermal-kinematic model. Field data and numerical simulation show the strong disturbance of the temperature field in the lower and intermediate crust in relation to magmatic underplating leading to granulite- to amphibolite-facies metamorphism as well as reequilibration of mineral chemical and isotopic systems. Magmatic underplating leaves a crust with an apparently heterogeneous tectonometamorphic evolution, as information on the earlier history is preserved only at upper crustal levels.
引用
收藏
页码:367 / 377
页数:11
相关论文
共 57 条
[31]   CONSTRAINTS ON THERMAL MODELS OF THE BASIN AND RANGE PROVINCE [J].
MARESCHAL, JC ;
BERGANTZ, G .
TECTONOPHYSICS, 1990, 174 (1-2) :137-146
[32]  
MASSONNE HJ, 1990, THESIS RUHR U BOCHUM
[33]  
NEWTON RC, 1982, AM MINERAL, V67, P203
[34]  
PIN C, 1986, CR ACAD SCI II, V303, P827
[35]   AN INTERNALLY CONSISTENT DATASET WITH UNCERTAINTIES AND CORRELATIONS .3. APPLICATIONS TO GEOBAROMETRY, WORKED EXAMPLES AND A COMPUTER-PROGRAM [J].
POWELL, R ;
HOLLAND, TJB .
JOURNAL OF METAMORPHIC GEOLOGY, 1988, 6 (02) :173-204
[36]   FE-MN PARTITIONING BETWEEN GARNET AND ILMENITE - EXPERIMENTAL CALIBRATION AND APPLICATIONS [J].
POWNCEBY, MI ;
WALL, VJ ;
ONEILL, HS .
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1987, 97 (01) :116-126
[37]   CORRECTION [J].
POWNCEBY, MI .
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1987, 97 (04) :539-539
[38]   EMPLACEMENT DYNAMICS OF A LARGE MAFIC INTRUSION IN THE LOWER CRUST, IVREA-VERBANO ZONE, NORTHERN ITALY [J].
QUICK, JE ;
SINIGOI, S ;
MAYER, A .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1994, 99 (B11) :21559-21573
[39]   URANIUM XENON CHRONOLOGY - PRECISE DETERMINATION OF LAMBDA(SF-ASTERISK) Y-136(SF) FOR SPONTANEOUS FISSION OF U-238 [J].
RAGETTLI, RA ;
HEBEDA, EH ;
SIGNER, P ;
WIELER, R .
EARTH AND PLANETARY SCIENCE LETTERS, 1994, 128 (3-4) :653-670
[40]   PHASE RELATIONSHIPS IN GRANULITIC METAPELITES FROM IVREA-VERBANO ZONE (NORTHERN ITALY) [J].
SCHMID, R ;
WOOD, BJ .
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1976, 54 (04) :255-279