發(fā)布時間：2018-02-22 11:38

  本文關(guān)鍵詞： 核形石 凝塊石 水動力條件 微生物巖旋回 饅頭組三段 寒武系 魯山 河南　出處：《微體古生物學(xué)報》2017年02期 　論文類型：期刊論文

【摘要】：河南魯山地區(qū)寒武系第三統(tǒng)饅頭組三段上部碳酸鹽巖中發(fā)育了大量微生物巖,包括3種類型核形石和2種類型凝塊石,其內(nèi)發(fā)現(xiàn)了大量鈣化的藍(lán)細(xì)菌化石Girvanella(葛萬菌)和Epiphyton(附枝菌)。根據(jù)凝塊石-核形石—鮞粒的演化關(guān)系,可識別出5個微生物巖旋回。凝塊石總是位于微生物巖旋回的底部,形成于潮下低能環(huán)境中;核形石位于旋回的中部,形成于潮下低-高能周期性變化的環(huán)境中;鮞�；�?guī)r出現(xiàn)在旋回的頂部,發(fā)育于持續(xù)攪動的潮下高能環(huán)境中。水動力條件的逐漸增強(qiáng)是微生物巖類型及其旋回演化的主控因素。
[Abstract]:A large number of microbe rocks have been developed in the upper carbonate rocks of the third member of the third member of the Cambrian formation in Lushan area, Henan Province, including three types of kernelitic rocks and two types of agglomerates. A large number of calcified cyanobacterial fossils Girvanella and Epiphyton have been found in it. Based on the evolutionary relationship between clot, nucleate and oolitic, five microbe cycles can be identified. The condensate is always located at the bottom of the microbial cycle. Formed in a subtidal low-energy environment, nucleated in the middle of the cycle, formed in a subtidal low-high-energy cyclic environment, oolitic limestone appears at the top of the cycle, The hydrodynamic condition is the main controlling factor of microbe rock type and its cycle evolution.
【作者單位】： 河南理工大學(xué)資源環(huán)境學(xué)院;
【基金】：國家自然科學(xué)基金項目(批準(zhǔn)號:41472083)資助~~
【分類號】：P534.41;P588.248

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