本文選題：生物組合 + 沉積環(huán)境��； 參考：《地質(zhì)科技情報(bào)》2017年06期

【摘要】：貴州惠水克腳剖面是南盤江盆地北緣二疊系-三疊系界線剖面,地層連續(xù),產(chǎn)不同門類的化石,對(duì)古生代-中生代之交黔南古地理和生物演化研究具有重要意義。剖面主要包括上二疊統(tǒng)大隆組和下三疊統(tǒng)大冶組下部。大隆組巖性主要為硅質(zhì)泥巖、鈣質(zhì)泥巖和炭質(zhì)頁巖,夾火山灰黏土巖與薄層硅質(zhì)灰?guī)r,泥巖發(fā)育水平層理。大隆組主要產(chǎn)游泳生物菊石、浮游生物放射蟲,另外產(chǎn)小個(gè)體腕足類、雙殼類和腹足類等,少數(shù)層位含植物化石。大冶組下部主要為薄層泥質(zhì)灰?guī)r夾鈣質(zhì)泥巖。通過巖性、古生物組合、沉積構(gòu)造等分析,認(rèn)為本剖面在二疊紀(jì)末為離古陸較近的深水沉積。
[Abstract]:The Huishui Kejie section is a Permian-Triassic boundary section in the northern margin of the Nanpanjiang Basin, with continuous strata and fossils of different families, which is of great significance to the study of Paleozoic and Mesozoic paleogeography and biological evolution in southern Guizhou.The section mainly includes Dalong formation of Upper Permian and lower part of Daye formation of Lower Triassic.The lithology of Dalong formation is mainly composed of siliceous mudstone, calcareous mudstone and carbonaceous shale, volcanic clay rock and thin layer siliceous limestone, and mudstone develops horizontal bedding.The Dalong formation is mainly composed of chrysanthemum, phytoplankton radiolaria, small individual brachiopods, bivalves and gastropods, and a few layers contain fossil plants.The lower part of Daye formation is mainly composed of thin layer mudstone and calcareous mudstone.Through the analysis of lithology, paleontological assemblage and sedimentary structure, it is concluded that this section is a deep-water deposit near paleocontinent at the end of Permian.
【作者單位】： 中國(guó)地質(zhì)大學(xué)地球科學(xué)學(xué)院;中國(guó)地質(zhì)大學(xué)生物地質(zhì)與環(huán)境地質(zhì)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41372030;41772016) 中國(guó)地質(zhì)調(diào)查局項(xiàng)目(1212011220529)
【分類號(hào)】：P534.46;Q911

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