CAJ | 학술논문

利用图像处理技术，对中国中-东部地区地质图进行新生代玄武岩的像素提取，并叠加在高精度地貌图上，统计了该地区陆地出露的新生代玄武岩的总面积和分区面积。结果表明：（1）我国中—东部地区新生代玄武岩总面积为78525 km2；（2）以东部新生代盆地为界，盆地以西的中部地区新生代玄武岩面积为35487 km2，盆地以东的东部地区新生代玄武岩面积为43038 km2，两边面积比为45：55；（3）按时代划分，中国中-东部新生代玄武岩随时代变新分布面积递增， S 古近纪∶S新近纪∶S第四纪为0.36：21.65：77.99；（4）中部地区的新生代玄武岩主要分布在北方，由北至南包括三个主要出露区，分别为松辽盆地以西的大兴安岭地区(7334 km2)、锡林郭勒地区（13843 km2）和华北北缘（14310 km2）；（5）东部地区新生代玄武岩的分布范围更广，从黑龙江一直到海南岛，也可以分为三个区，包括松辽盆地以东的东北地区（33324 km2）、从山东到福建零星分布的华东地区（1707 km2）以及位于海南岛和雷州半岛的雷琼地区（8007 km2）；（6）总体看，我国中—东部地区新生代玄武岩主要分布在北方，如以山东省为界，北方玄武岩面积达69191 km2，南方玄武岩面积达9334 km2，北南之比为88∶12。
이용도상처리기술，대중국중-동부지구지질도진행신생대현무암적상소제취，병첩가재고정도지모도상，통계료해지구륙지출로적신생대현무암적총면적화분구면적。결과표명：（1）아국중—동부지구신생대현무암총면적위78525 km2；（2）이동부신생대분지위계，분지이서적중부지구신생대현무암면적위35487 km2，분지이동적동부지구신생대현무암면적위43038 km2，량변면적비위45：55；（3）안시대화분，중국중-동부신생대현무암수시대변신분포면적체증， S 고근기∶S신근기∶S제사기위0.36：21.65：77.99；（4）중부지구적신생대현무암주요분포재북방，유북지남포괄삼개주요출로구，분별위송료분지이서적대흥안령지구(7334 km2)、석림곽륵지구（13843 km2）화화북북연（14310 km2）；（5）동부지구신생대현무암적분포범위경엄，종흑룡강일직도해남도，야가이분위삼개구，포괄송료분지이동적동북지구（33324 km2）、종산동도복건령성분포적화동지구（1707 km2）이급위우해남도화뇌주반도적뢰경지구（8007 km2）；（6）총체간，아국중—동부지구신생대현무암주요분포재북방，여이산동성위계，북방현무암면적체69191 km2，남방현무암면적체9334 km2，북남지비위88∶12。
Distribution information of Cenozoic basalts were extracted by pixel from the geological map of central and Eastern China, and overlaid on the high-precision geomorphologic map, utilizing a digital-rimage processing program. Based on this method, we estimated the total and sub-regional area of Cenozoic basalts exposed in Central and Eastern China. The main observations include:(1) The total area of Cenozoic basalts in Central and Eastern China is 78 525 km2. (2) The area of Cenozoic basalts in Central China is 35 487 km2, while that in Eastern China is 43 038 km2, with a ratio of 45∶55. (3) The area of Cenozoic basalts increases along with younger age, and the ratio of which from Paleogene, Neogene, to Quaternary is 0.36∶21.65∶77.99. (4) Cenozoic basalts of Central China are mainly distributed in the north. Three main regions include: Great Xing'an Range, Xilin Gol region and northern edge of North China, with an area of 7334 km2, 13 843 km2, and 14 310 km2, respectively. (5) In Eastern China, Cenozoic basalts are more widely distributed, from Heilongjiang province in the north to Hainan Island in the south, and they can be divided into three regions:Northeast China to the east Songliao basin (33 324 km2), Eastern China including Shandong, Zhejiang, Jiangsu and Fujian provinces (1 707 km2), and Leiqiong region including Hainan Island and Leizhou Peninsula (8 007 km2). (6) Taken Shandong province as the boundary, Cenozoic basalts in Central and Eastern China are mainly distributed in the north with an area of 69 191 km2, while that of the southern part is 9334 km2, and their ratio is 88∶12.