Magnetofabrics of eclogites and ultramafic rocks from the Chinese Continental Scientific Drilling (CCSD) project: evidence for ultrahighpressure (UHP) texture inheritance throughout retrogression
Grimmer, Jens Carsten; Qi, Xuexiang; Xu, Zhiqin
Ultrahigh-pressure(UHP) mafic and ultramafic rocks from the Chinese Continental Scientific Drilling (CCSD) in the Maobei eclogite body of the Sulu ultrahigh-pressure metamorphic belt in eastern China were studied for their magnetofabrics in. order to constrain fluid rock interactionsand related ductile deformation. Our magnetofabric data together with published textural data, imply that the magnetic fabric mimics the UHP fabric in the mafic and ultramaficrocks and survivedretrogression. Accordingly, the amphiboliteto greenschist grade fabric is inherited from the UHP stage. As a consequence, retrogression cannot have been associated with substantial ductile deformationin these lithologies.