Paleo—Latitude Variation of Guizhou Terrain from Devonian to Cretaceous |
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摘 要: |
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关 键 词: | 贵州 地形 古纬度 白垩纪 泥盆纪 |
Paleo-latitude variation of Guizhou terrain from Devonian to Cretaceous |
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Authors: | Wang Junda Li Huamei |
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Institution: | (1) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640 Guangzhou |
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Abstract: | Over 800 paleomagnetic samples were collected from 79 sample localities, ranging in age from Devonian, Carboniferous, Permian
to Jurassic for paleo-latitude research on the Guizhou terrain. The area sampled covers 13 counties with an area of about
50000 km2. The paleomagnetic results obtained indicate that the Guizhou terrain was at 11.4°S in Devonian, 4.5°-9.3°S in Carboniferous,
2.6° − 4.5°S in Permian, 14.8°N in Triassic and 24.5° − 26.0°N in Jurassic. In the Cretaceous period, the paleo-latitude of
the area was at 22.4 − 23.6°N. Therefore, a variation curve of paleo-latitude is established in this paper for the Guizhou
terrain from Late Devonian to Late Cretaceous time. |
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Keywords: | Guizhou terrain paleo-latitude Devonian to Cretaceous |
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