Online map of palaeostructures in Caledonian, China
The general term for the early Paleozoic crustal movement of the Caledo-nian movement, about 400 million years ago. Affecting the Silurian and its previous strata, named after a mountain in the United Kingdom, the fold belt formed by the Caledonian movement is called the Caledon fold belt. The Caledonian movement caused wrinkles in the Early Paleozoic and its previous strata in the United Kingdom and Scandinavia's Grampian trough, the Sayan Ridge trough in southern Russia's Central Siberia, and the Caledonian trough in South China's South China. Mountain range, Tianshan trough in the northwestern part of China, Qilian Mountain trough, Kunlun Mountain-Kekexili Mountain-Bayan Hara Mountain trough, Nyainqentanglha Mountain-Tangula Mountain-Nanshan trough, Hengduan Mountain, Qinling-Dabie Mountain trough They have been transformed into wrinkled mountains by the influence of the Caledonian movement. In the sea troughs of northern China, some sporadic islands or submarine mountains have formed, which are mostly undulating. In the Caledonian trough area of South China, the Caledonian movement is accompanied by the formation of mixed rocks and granite in addition to the formation of fold belts. The main minerals are iron, manganese, uranium rare earth, natural gas, phosphorus, sulfur and so on.
Continental Crustal Stability Zone
Long-term uplift, basically uplift after the Cambrian;
Carbonate fine clastic deposits in the epicontinental sea are predominant, rising after the Middle Ordovician in North China and after the Early Silurian in Yangtze region；
The platform subsidence zone rose after the Late Ordovician in North China, after the Early Ordovician in the western Yangtze region, and after the Early Silurian in the eastern Yangtze region；
The stable plots are not divided.
Activity Zone Late Proterozoic uplift or early Caledonian (Xingkai) fold belt;
In the Middle Caledonian fold belt, the marginal seas are mainly non-compensatory deposits；
In the Middle Caledonian fold belt, the marginal sea and trough are mainly filled by compensation；
Late Caledonian Fold Zone, Remaining Trough, Filling Up after Silurian Period.
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