本文選題：前寒武紀(jì) + 趙家莊組　； 參考：《西南石油大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年04期

【摘要】：前寒武紀(jì)沉積地層多因地質(zhì)時(shí)代久遠(yuǎn)而受到過變質(zhì)作用的強(qiáng)烈改造,因而沉積作用過程研究難度較大且較為薄弱。以詳細(xì)的野外地質(zhì)剖面測制工作為基礎(chǔ),結(jié)合區(qū)域地質(zhì)背景資料分析,通過野外巖石類型鑒定、沉積構(gòu)造鑒別及室內(nèi)巖相古地理綜合分析等,發(fā)現(xiàn)太行山中南段長城系趙家莊組發(fā)育陸相→海相的沉積巖相組合,主要形成環(huán)境為沖積扇相→潮坪相,地層頂?shù)捉缇�清晰,易于識(shí)別。趙家莊組完整的地層層序可劃分為4段,包括粗碎屑巖層、砂巖頁巖互層、頁巖層和疊層石藻礁層,巖石類型豐富,地層沉積特征明顯,具有明顯的沉積環(huán)境指示作用,可以作為地質(zhì)工作者進(jìn)一步研究前寒武紀(jì)沉積環(huán)境及早期古生物的一個(gè)窗口。
[Abstract]:Most of the Precambrian sedimentary strata were strongly modified by metamorphism because of the long geological age, so the study of sedimentary process is difficult and relatively weak. On the basis of detailed field geological profile survey and analysis of regional geological background data, through field rock type identification, sedimentary structure identification and comprehensive analysis of indoor lithofacies and paleogeography, etc. It is found that the sedimentary lithofacies assemblage of marine facies developed in the Great Wall system of the Great Wall system in the central and southern Taihang Mountains. The main formation environment is alluvial fan facies and tidal flat facies. The boundary between the top and the bottom of the strata is clear and easy to identify. The complete stratigraphic sequence of Zhaojiazhuang formation can be divided into 4 sections, including coarse clastic rock, sandstone shale interbed, shale and stromatolite algal reef. It can be used as a window for geologists to further study the Precambrian sedimentary environment and early paleontology.
【作者單位】： 河北地質(zhì)大學(xué)資源學(xué)院;
【基金】：國家自然科學(xué)基金(41172118) 河北省自然科學(xué)基金(D2013403018,D2012403010) 河北省教育廳青年基金(QN2015255)
【分類號(hào)】：P512.2
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本文編號(hào)：2108819