華南上揚(yáng)子區(qū)奧陶紀(jì)特馬豆克階的海平面變化
[Abstract]:On the basis of detailed biostratigraphic studies, the sedimentary facies assemblages and sedimentary facies sequences of 4 sections in the Upper Yangtze area of South China are analyzed, and the high resolution relative sea level change curves of the Termaduke period in the Upper Yangtze region are established. Ten sedimentary facies were identified and 3 sedimentary facies combinations were identified, respectively, which were deposited in shallow subtidal zone, deep tidal zone and shale basin zone, and 5 important transgression events were identified, which occurred in the late stage of TS.1c and late TS.1c of TS.1a, and the late stage of TS.1d, respectively, in the early stage of TS.1a, in the late stage of TS.1c, and in the late stage of TS.1d. The early transgression of TS.1c was the largest transgressive event in the Temadouk period. By comparing with other plate sea level change curves, it is found that the sea level change in the upper Yangtze area is mainly controlled by the global sea level change.
【作者單位】: 造山帶與地殼演化教育部重點(diǎn)實(shí)驗(yàn)室北京大學(xué)地球與空間科學(xué)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(41272035,41221001,41290262)資助
【分類號(hào)】:P534.42
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