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Introduction
Publications
Publications (14)
Geological study of the Khan Tengri and Pobedi massifs highlights two phases of compressional fault displacements. A Late Permian/Triassic displacement phase is highlighted (1) by biotite ⁴⁰Ar/³⁹Ar ages of 265–256 Ma, suggestive of cooling of Pobedi mid-crustal granulites during >8 km of top-to-the-north motion of the Pobedi Thrust; (2) by ⁴⁰Ar/³⁹A...
The South Tien Shan (STS) belt results from the last collision event in the western Central Asian Orogenic Belt (CAOB). Understanding its formation is of prime importance in the general framework of the CAOB. The Atbashi Range preserves high‐pressure rocks along the South Tien Shan suture but still, its global metamorphic evolution remains poorly c...
The Permian history of the Central Asian Orogenic belt is marked by large-scale strike-slip faults that reactivate former Paleozoic structures, delineated by widespread alkaline magmatism. The genetic link between the syn-kinematic granitoids emplaced in the Tien Shan range and magmas emplaced within the Tarim Large Igneous Province, and the intera...
This contribution presents an approach and a computer program (GRTMOD) for numerical simulation of garnet evolution based on compositions of successive growth zones in natural samples. For each garnet growth stage, a new local effective bulk composition is optimized, allowing for resorption and/or fractionation of previously crystallized garnet. Th...
This contribution presents an approach and a computer program (GRTMOD) for numerical simulation of garnet evolution based on compositions of successive growth zones in natural samples. For each garnet growth stage, a new local effective bulk composition is optimized, allowing for resorption and/or fractionation of previously crystallized garnet. Th...
The tectonic evolution of the Central Asian Orogenic Belt (CAOB) is characterized by the successive accretion of lithospheric blocks, leading to different interpretations about the polarity of subductions during the Paleozoic, the number of microplates and oceanic basins and the timing of tectonic events. This is especially the case in the Tien Sha...
The South Tien-Shan (STS) belt, in Central Asia, is one of the largest intracontinental orogens. It results from the reactivation of Paleozoic structures inherited from the Central Asia Orogenic Belt (CAOB) building. Understanding the current tectonics of STS requires the knowledge of the Paleozoic history which is, however, still debated. As the K...
In the South Tien Shan range (Kyrgyzstan), the Late Paleozoic geodynamic evolution remains debated especially to the west of the Talas-Fergana fault (TFF) fault where suture-related high-pressure (HP) rocks are scarce. We provide new petrological and geochronological data on garnet amphibolites from the Chatkal range, to the west of the TFF, northw...
Based on new structural and petrological investigations, we present two crustal-scale
cross-sections of the Kyrgyz South Tien Shan, and correlations of main faults and units between
Kyrgyzstan and China. The overall structure corresponds to a doubly-vergent mountain belt.
The Kyrgyz and Chinese areas exhibit identical structural and metamorphic his...
A subduction complex of carboniferous age is preserved in the South Tianshan belt of Kyrgyzstan. It is made of a LP-LT accretionnary prism comprising an obducted ophiolite thrusted by a HP complex made of a sedimentary channel including eclogites boudins and a continental unit. Its structure and metamorphic history are investigated to reconstruct t...
The NW-trending Talas–Ferghana Fault (TFF) in Kyrgyzstan, Central Asia, is one of the largest intracontinental
strike-slip faults in the world. It extends over a distance of more than 2000 km from southern
Tourghai to western Tarim and exhibits a maximum dextral offset of �200 km during the late Palaeozoic
to present. The history of the fault provi...
The main phases of tectonic collage of blocks and activation of
post-collisional Talas-Ferghana strike-slip fault (TFF) are investigated
in the Kyrgyz Central Asian Orogenic Belt (CAOB), by a combined field,
metamorphic and Ar/Ar study. The field work conducted on the southern
suture of the Middle Tian Shan to the East of the TFF highlights a
south...
