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一、关于黑松沟组的时代分布于浑江市临江镇以东黑松沟、金矿屯、大湖一带的呈东西向展布的一套中生代含煤正常碎屑沉积岩系,自一九六○年由煤田219地质队定为早侏罗世,取名黑松沟组以来,一直为之引用。并多以测制1:20万慢江幅在用湾子桥旁所采之植物化石为其时代依据。包括:Cladophlebis denticalata Brongriart,Cl·shansiensis Sze,Cl.haiburnensis L.et.H,Cl.whitbyensis Brongriart。
I. About the era of the Hesonggou Formation The Mesozoic normal clastic sedimentary rock series distributed in the east-west direction in the areas of Heisonggou, Gold Mine and Dahu, east of Linjiang Town, Hunjiang City, 60 years by the Coal Field 219 geological team as early Jurassic, named after the Iesong Group, has been quoted. And more to measure the 1: 20000 slow river amplitude in the Bay Bridge adopted by the plant fossils for its era basis. Including: Cladophlebis denticalata Brongriart, Cl shansiensis Sze, Cl.haiburnensis L.et.H, Cl.whitbyensis Brongriart.