CAJ | 학술논문

本文从“米级旋回层序”研究入手,运用“空间上相序的有序性和时间上环境变化的同步性”原理,深入研究早三叠世地层的“岩性、岩相、相序”。将地层划分为殷坑组、青龙组及飞剑潭组,并用牙形石化石资料将其确定为早三叠世殷坑阶-巢湖阶。依据岩相及相序可划分为滨海潮坪相、浅海台地相、台缘浅滩相、台地前缘斜坡相、开阔陆棚相及次深海盆地相。依据米级旋回层序研究及相序叠加型式,将早三叠世地层划分为5个三级旋回层序,其中Ⅰ型层序2个,淹没不整合层序3个。早三叠世印支运动作用强烈,以“开、合”作用为主,致使晚古生代陆表海结束,形成具“台-坡-盆”古地貌结构的陆缘海盆。但仅持续5.1Ma,陆缘海盆便宣告结束。
본문종“미급선회층서”연구입수,운용“공간상상서적유서성화시간상배경변화적동보성”원리,심입연구조삼첩세지층적“암성、암상、상서”。장지층화분위은갱조、청룡조급비검담조,병용아형석화석자료장기학정위조삼첩세은갱계-소호계。의거암상급상서가화분위빈해조평상、천해태지상、태연천탄상、태지전연사파상、개활륙붕상급차심해분지상。의거미급선회층서연구급상서첩가형식,장조삼첩세지층화분위5개삼급선회층서,기중Ⅰ형층서2개,엄몰불정합층서3개。조삼첩세인지운동작용강렬,이“개、합”작용위주,치사만고생대륙표해결속,형성구“태-파-분”고지모결구적륙연해분。단부지속5.1Ma,륙연해분편선고결속。
Based on the research on meter-scale cyclic sequences,the principle of“sequentiality of Spatial phase sequence and synchronicity of Environmental change in time domain”was applied in the conduction of intensive study on lithography, sedimentary facies and phase sequences of early triassic strata. stratum was divided into Yin Keng group,Qing Long group and Fei Jian Tan group.It was determined as early Triassic strata Yin Keng order-Chao Hu order according to information from condodont fossils.In line with sedimentary facies and phase sequences,it can be divided into coastal tidal flat facies, shal ow marine platform facies, platform front-edge slope facies, open continental shelf facies and sub-abysmal basinal facies.On the basis of research on meter-scale cyclic sequences and phase sequence stacking form, early triassic strata was divided into 5 third-order cyclic sequences,of which there are 2 I type sequences and 3 drowned unconformity sequences.With“open and close”as the main movement, Early Triassic indosinian has strong movement,which leads to the ending of the late Paleozoic epicontinental sea and the formation of the epicontinental sea basin with table-slope-basin geomorphology structure.Epicontinental sea basin only last 5.1 Ma before coming to an end.