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1、第42卷第4期煤田地質(zhì)與勘探VOl_42NO．42014年8月coALGE0直0GY&E)10RⅡ0NAug．2014文章編號：1001-1986(2014)04．0001．07二龍山含煤盆地中新世富錦組沉積相及層序地層特征野兆瑞，曲延林2邵龍義，馬立軍，胡一鴻，李柱(1．中國礦業(yè)大學(xué)地球科學(xué)與測繪工程學(xué)院，北京100083；2．黑龍江省煤田地質(zhì)局，黑龍江哈爾濱1500061摘要：黑龍江東部二龍山盆地是一新生代陸相聚煤盆地，中新世富錦組是其含煤地層。通過對富錦組沉積相、層序地層和聚煤作用特征的研究，可以看出：富錦組主要由凝灰質(zhì)粉砂巖及中細(xì)砂巖、凝灰質(zhì)礫巖及褐煤組成，發(fā)
2、育濱淺湖相、深一半深湖相、沖積扇扇根相、扇中相及沼澤相，分別屬于湖泊沉積體系和沖積扇沉積體系；富錦組是一個以區(qū)域不整合面為上下界的三級層序，其低位體系域?qū)?yīng)底部礫巖段，湖侵體系域?qū)?yīng)下部砂巖段和中部含煤段，高位體系域?qū)?yīng)上部砂巖段；研究區(qū)煤層形成于湖侵體系域末期，且以盆地中部煤層厚度最大，向西北和西南方向煤層均變薄；聚煤作用明顯受基底沉降作用影響，在湖侵體系域末期基底穩(wěn)定沉降階段，可容空間增加速率與泥炭堆積速率相平衡，從而形成了區(qū)內(nèi)巨厚煤層。關(guān)鍵詞：二龍山盆地；新近紀(jì)；富錦組；湖侵體系域；聚煤作用中圖分類號：P618．11文獻(xiàn)標(biāo)識碼：ADOI：10．39698．iss
3、n．1001．1986．2014．04．001SedimentaryfaciesandsequencestratigraphyoftheMioceneFujinFormationinErlongshancoal-bearingbasinYEZhaomi，QUYanlm2，SHAOLongyi，MALijun2，HUYihong，LIZhu(1．SchoolofGeosciencesandSurveyingEngineering,ChinaUniversityofMiningandTechnology，Beijing100083，China；2．CoalfieldGeo
4、logicalBureauofHeilongfiangProvince，Haerbin150006，China)Abstract：ErlongshanbasinineasternHeilongjiangProvinceisaCenozoiccontinentalcoalbasinandMioceneFujinFormationisitscoal-bearingstrata．Inthispaper,wehavestudieditssedimentaryfacies，sequencestratigraphyandcoalaccumulationcharacteristic
5、s．FujinFormationiscomposedoftufaceoussiltstoneandfine—grainedsandstones，tufaceousconglomerates，andlignite，wasdepositedinlacustrineenvironmentsrangingfromlittoralandshallowlake，deeplake，mediumdeeplaketoalluvialfan．Twodepositionalsystemswereclassified；lacustrineandalluvialfan；thewholeFuji
6、nFormationcomposesathird—ordersequencewiththeregionalunconformitiesasitsupperandlowerbounds．Thelowstandsystemtractcorrespondstothebottomconglomeratemember,thetransgressivesystemstractcorrespondstothelowersandstonememberandmiddlecoal-bearingmember,andthehighstandsystemstractcorrespondsto
7、theuppersandstonemember．ThecoalseamsinVujinFormationwereformedattheendofthetransgressivesystemstract，andthethickestcoalisdistributedinthecentralzoneofthebasin，whichthinsouttowardsnorthwestandsouthwest．Coalaccumulationhasbeensignificantlycontrolledbybasinsubsidence，andduringthes
