CAJ | 학술논문

江西永丰-崇仁盆地上白垩统（包括河口组、塘边组和莲荷组）砾岩地层十分发育，是构成丹霞地貌的物质基础。利用砾石的岩性和磨圆度进行列联表分析，可以为沉积盆地物源判断提供依据。利用列联表分析方法对永丰-崇仁盆地上白垩统砾岩进行研究。砾石成分主要包括石英、酸性岩浆岩、变质岩和砂岩以及少量的泥质岩和灰岩。为了统计方便，将砾石磨圆度分组为棱角状和次棱角状（A ＋B）、次圆状（C）、圆状和极圆状（D ＋E）。若棱角状和次棱角状砾石观察值小于期望值，而圆状和极圆状砾石观察值大于期望值则说明砾石经历了较长的搬运距离；反之，则说明砾石搬运距离较短。通过联列表分析，结果显示：河口组砾岩具有多物源的特点，主要来自盆地边缘、鸡笼山、相山和玉华山以及盆地西北的长垅地区；塘边组砾岩主要来自盆地北部的尖顶峰山、玉华山一带以及盆地东南的丰山、新大山地区；莲荷组砾岩主要来自于金华山和嶂岭等盆地边缘地区，盆地北侧的鸡龙岗、松树岭以及东北部的灵谷岭地区。物源分析结果为该地区晚白垩世红盆的形成和演化规律的探讨提供了重要依据。
강서영봉-숭인분지상백성통（포괄하구조、당변조화련하조）력암지층십분발육，시구성단하지모적물질기출。이용력석적암성화마원도진행렬련표분석，가이위침적분지물원판단제공의거。이용렬련표분석방법대영봉-숭인분지상백성통력암진행연구。력석성분주요포괄석영、산성암장암、변질암화사암이급소량적니질암화회암。위료통계방편，장력석마원도분조위릉각상화차릉각상（A ＋B）、차원상（C）、원상화겁원상（D ＋E）。약릉각상화차릉각상력석관찰치소우기망치，이원상화겁원상력석관찰치대우기망치칙설명력석경력료교장적반운거리；반지，칙설명력석반운거리교단。통과련렬표분석，결과현시：하구조력암구유다물원적특점，주요래자분지변연、계롱산、상산화옥화산이급분지서북적장롱지구；당변조력암주요래자분지북부적첨정봉산、옥화산일대이급분지동남적봉산、신대산지구；련하조력암주요래자우금화산화장령등분지변연지구，분지북측적계룡강、송수령이급동북부적령곡령지구。물원분석결과위해지구만백성세홍분적형성화연화규률적탐토제공료중요의거。
rocks,sandstones and metamorphic rocks,and a small amount of mudstones and limestones.For the conven-ience of counting,the roundness of the gravels are subdivided into three levels including A +B (angular and sub-angular),C (sub-rounded)and D +E (rounded and well-rounded).Normally,when the value of A +B is fewer than expected and the value of D +E is more than expected,pebbles were considered to be transported for long distance.On the contrary,it shows short distance transport.The following conclusions are drawn:the peb-bles of Hekou Formation came from more than one source,and they would came from the edge of the basin and Jilongshan,Xiangshan and Yuhuashan mountains and the northwestern Changlong area;the pebbles of Tangbian Formation were mainly derived from Jiandingfengshan and Yuhuashan mountains,and some parts from southeast Fengshan and Xindashan mountains;the Lianhe Formation’s pebbles were mainly derived from Jinhuashan and Zhangling mountains,and some might come from Jilonggang,Songshuling and Lingguling mountains in the northeastern part of the basin.The result of the provenance analysis could provide important basis for the forma-tion and evolution of the Cretaceous red basins in south China.