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一、引言本文所指的黑龙江省东部,其地理范围是松辽平原以东,黑龙江以南,松花江下游乌苏里江、穆棱河等流域地区。本省中生界主要分布在中生代盆地或拗陷区,概属陆相盆地型沉积,如鹤岗、双鸭、宝清、十二道坝、勃利、倭肯、鸡西、穆棱、东宁、老黑山等盆地。沉积岩系中夹杂有火山熔岩及其碎屑岩,总厚度由数百米到五千余米。在此陆相沉积岩中,赋存有丰富的煤层。过去
I. INTRODUCTION In the eastern part of Heilongjiang Province referred to in this paper, its geographical scope is east of Songliao Plain, south of Heilongjiang, Wusuli River and Muling River in the lower Songhua River. The Mesozoic provinces are mainly distributed in Mesozoic basins or depressions, and are generally continental basin-type sediments such as Hegang, Shuangyao, Baoqing, Twelve Dam, Boli, Hoken, Jixi, Muling, Dongning , Montenegro and other basins. Sedimentary rock series inclusions volcanic lava and its clastic rocks, the total thickness from a few hundred meters to five thousand meters. In this terrigenous sedimentary rock, there are abundant coal seams. past