Metamorphic evolution of gneisses and eclogites along a cross section through the cold and hot eclogite terrane of the Dabie Shan, Central China

扬子板块与中朝板块在中生代早期的碰撞是在地表暴露的超高压变质岩石受到侵蚀之后发生的，迄今为止，这些岩石的特征是柯石英和/或金刚石。在大别山、桐柏山和苏鲁地区广泛分布的这类岩石为研究陆-陆碰撞过程中与造山深源有关的过程提供了一个几乎是世界上独一无二的环境。在大别山的一个选区内，主要沿着南北向的剖面，对榴辉岩、超基性岩和钙硅酸盐岩以及围岩本身进行了仔细取样。这些岩石是我们岩石学研究的目标，主要包括用电子探针进行详细的微观分析研究。此外，它旨在使用LA-ICP-MS以最小的现场解决方案来确定矿物相中的痕量元素，如石榴石、白云母、黑云母和/或蓝晶石。新的温压计，包括已经在斯图加特校准的温压计，将应用于矿物相的微量元素（如P、Ti、Y和Zr）。这些新的方法应导致更详细的P-T路径比迄今为止。计划的PT路径推导，应该是一个重要的贡献，碰撞造山带的地球动力学演化的启示，从而将有助于了解过程中的造山深根。

The collision between the Yangtze Craton and the Sino-Korean Craton in the Early Mesozoic resulted after erosion in surficially exposed UHPM rocks indicated, so far, by coesite and/or diamond. The widerspread occurrence of such rocks in the DabieTongbai Mountains and the Jiangsu-Shandong Province (Su-Lu) offers an worldwide almost unique situation to study processes related to deep orogenic roots during continent-continent collision. In a selected area of the Dabie Shan, mainly along a profile in N-S direction, eclogites, ultrabasic and calcsilicate rocks, that are encloses as lenses in gneisses and micaschists, and the country rocks themselves, should be carefully sampled. These rocks are the target of our petrologic research which will mainly include detailed microanalytical investigations with the electron microprobe. Furthermore, it ist intended to use LA-ICP-MS to determine with a minimal site solution trace elements in mineral phases like garnet, phengiet, biotite and/or kyanite. New thermobarometers including that already are being calibrated in Stuttgart, are to be applied to trace elements (e.g. P, Ti, Y, and Zr) of mineral phases. These new methods should result in much more detailed P-T-paths than derived so far. The PT-path derivation that are planned, should be an important contribution to the enlightenment of the geodynamic evolution of the collision orogen and thus will help to understand processes at deep orogenic roots.