CAJ | 학술논문

提基于冈瓦纳大陆主要板块冰川沉积地层的对比，并结合古地磁方法对冈瓦纳大陆古生代主要冰期的冰盖分布范围进行再造，认为冈瓦纳大陆在古生代主要经历了3次较大的冰期，分别是：（1）晚奥陶世—早志留世冰期、（2）晚泥盆世—早石炭世冰期、（3）晚石炭世晚期—二叠纪冰期。晚奥陶世—早志留世冰期冰盖主要分布在西冈瓦纳大陆；晚泥盆世—早石炭世冰期冰盖主要分布在南美板块；晚石炭世晚期—二叠纪冰期冰盖在冈瓦纳大陆主要组成板块上均有分布，且冰盖存在时间最长，分布范围最广。3次主要冰期冰盖的中心点位置均靠近南极点，但并不完全重合，可认为气温是影响冈瓦纳大陆上冰盖分布的主要因素，但不是唯一的因素，冰盖的分布范围还受到盆地动力学、地形、冰川属性以及其他具体因素的影响。同时结合在保山地块的野外工作以及前人的研究成果，认为冈瓦纳大陆的3次冰期中，仅晚石炭世晚期—二叠纪冰期对中国的陆块产生了影响，且主要影响了中国的西南陆块群（包括保山地块、腾冲地块、拉萨地块、羌塘地块等）。
제기우강와납대륙주요판괴빙천침적지층적대비，병결합고지자방법대강와납대륙고생대주요빙기적빙개분포범위진행재조，인위강와납대륙재고생대주요경력료3차교대적빙기，분별시：（1）만오도세—조지류세빙기、（2）만니분세—조석탄세빙기、（3）만석탄세만기—이첩기빙기。만오도세—조지류세빙기빙개주요분포재서강와납대륙；만니분세—조석탄세빙기빙개주요분포재남미판괴；만석탄세만기—이첩기빙기빙개재강와납대륙주요조성판괴상균유분포，차빙개존재시간최장，분포범위최엄。3차주요빙기빙개적중심점위치균고근남겁점，단병불완전중합，가인위기온시영향강와납대륙상빙개분포적주요인소，단불시유일적인소，빙개적분포범위환수도분지동역학、지형、빙천속성이급기타구체인소적영향。동시결합재보산지괴적야외공작이급전인적연구성과，인위강와납대륙적3차빙기중，부만석탄세만기—이첩기빙기대중국적륙괴산생료영향，차주요영향료중국적서남륙괴군（포괄보산지괴、등충지괴、랍살지괴、강당지괴등）。
In this study, the authors reconstructed the distribution of ice sheets on Gondwana Supercontinent in Paleozoic based on the methods of stratigraphic correlation and paleomagnetism. By studying the Paleozoic glacier deposits on the major plates of Gondwana, the authors have reached the conclusion that three major glacial events occurred on Gondwana Supercontinent in Paleozoic, which included (1) Late Ordovician-Early Silurian glacial event, (2) Late Devonian-Early Carboniferous glacial event, (3) the end of Late Carboniferous-Permian glacial event. The Late Ordovician-Early Silurian glacier event lasted a shorter period of time, and the glacier deposits were limitedly distributed on West Gondwana. Compared with the first glacier period, the ice sheets during the Late Devonian-Early Carboniferous glacier period were even smaller and mainly distributed in South America Plate, whereas the last glacial event lasted for the longest time and influenced the largest area, and the ice sheets were distributed on all the major plates which constituted Gondwana Supercontinent. Furthermore, the centers of ice sheets in the three glacial events were all close to the South Pole, but they were not completely coincident. It is thus held that the major factor affecting the distribution of ice sheets on Gondwana Supercontinent was the temperature. In addition, basin dynamics, topography, attributes of glacier and other specific factors could also affect the distribution of ice sheets. Combining the authors’field work in Baoshan Block with achievements of other researchers, the authors have reached the conclusion that only the Late Carboniferous-Permian glacial event had an effect on China’s blocks, and mainly affected the blocks in Southwest China, including Baoshan Block, Tengchong Block, Lhasa Block and Qiangtang Block.