中文摘要：

利用图像处理技术，对中国中一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）我国中一东部地区新生代玄武岩总面积为78525km2；（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35487km2，盆地以东的东部地区新生代玄武岩面积为43038km2，两边面积比为45：55；（3）按时代划分，中国中一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（7334km2）、锡林郭勒地区（13843km2）和华北北缘（14310km2）；（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（33324km2）、从山东到福建零星分布的华东地区（1707km2）以及位于海南岛和雷州半岛的雷琼地区（8007km2）；（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69191km2，南方玄武岩面积达9334km2，北南之比为88：12。

英文摘要：

Distribution information of Cenozoic basahs 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 basahs 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 basahs 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.