Syntectonic anatexis and magmatism in a mid crustal transpressional shear zone. Mechanisms of crustal anatexis oxford academic journals. Melting of crustal rocks during continental collision and. The other two episodes of anatexis occurred during the jurassic period at c. Syntectonic anatexis and magmatism in a midcrustal. Hightemperature metamorphism and crustal anatexis j. Hutton school of earth sciences, university of birmingham, edgbaston, birmingham b15. Crustal anatexis is not restricted to a single tectonic setting, but rather is controlled by. Spera department of geological sciences and institute for crustal studies, university of california, santa barbara abstract. Pdf hightemperature metamorphism and crustal anatexis. Them is overwhelming and incontrovertible petrological and geophysical evidence for. The continental crust can partially melt to generate silicic magmas.
Inhis1879expeditionthroughthegrandcanyon,johnwesleypowellidentifiedand. Migmatites record multiple episodes of crustal anatexis. Anatexis may have been triggered by crustal thickening during the intraplate wuyiyunkai orogeny. Wang, yuejun zhang, aimei fan, weiming zhao, guochun zhang, guowei zhang, yuzhi zhang, feifei and li, sanzhong 2011. The first two episodes of crustal anatexis occurred during the late triassic at c. Mass estimates of cumulates and residues after anatexis in the oslo. Pdf the early paleozoic orogeny in the south china block was accompanied by crustal anatexis, as indicated by the voluminous granites. Early paleozoic crustal anatexis in the intraplate wuyi. What links here related changes upload file special pages permanent link page. Kwangsian crustal anatexis within the eastern south china block. Ii ultrametamorphism and crustal anatexis bernard bonin encyclopedia of life support systems eolss the uhpm space is composed of the other eclogite subfacies, namely. The basement experienced intense crustal reworking at ca 440 ma.
Friend and others published hightemperature metamorphism and crustal anatexis find, read and cite all the. The cathaysia block contains archean components as old as 3. Nd isotope disequilibrium, migmatite, crustal anatexis, leucosome. Implications for the growth and differentiation of continental crust federica raia and frank j. To shed light on the mechanisms of crustal anatexis, a detailed geo chemical study. Ch1 bighistory garber university of california, davis. Crustal anatexis and melt extraction during deformation in.