中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2015年
2期
6-12,25
,共8页
下-中侏罗统%地层划分对比%古植物%古气候%内蒙古隆起及南缘
下-中侏囉統%地層劃分對比%古植物%古氣候%內矇古隆起及南緣
하-중주라통%지층화분대비%고식물%고기후%내몽고륭기급남연
lower-middle Jurassic%strata division and correlation%fossil plant%paleoclimate%Inner Mongolia uplift and its south margin
通过对内蒙古石拐、苏勒图、冀北和辽西北票等侏罗纪含煤盆地下-中侏罗统的五当沟组、召沟组、北票组等的岩性及其所含植物化石、古气候的对比研究，认为辽西北票组底部的一套粗碎屑岩为主的杂色岩系沉积为内蒙古西部、冀北的五当沟组东延部分，建议将其单独划出为五当沟组；底部杂色岩系之上的含煤地层和召沟组差别较大，建议仍保留北票组名称。通过植物化石和孢粉分析，五当沟组为早侏罗世晚期比较干热气候下的产物，而召沟组和北票组为中侏罗世早期温湿气候下的产物。
通過對內矇古石枴、囌勒圖、冀北和遼西北票等侏囉紀含煤盆地下-中侏囉統的五噹溝組、召溝組、北票組等的巖性及其所含植物化石、古氣候的對比研究，認為遼西北票組底部的一套粗碎屑巖為主的雜色巖繫沉積為內矇古西部、冀北的五噹溝組東延部分，建議將其單獨劃齣為五噹溝組；底部雜色巖繫之上的含煤地層和召溝組差彆較大，建議仍保留北票組名稱。通過植物化石和孢粉分析，五噹溝組為早侏囉世晚期比較榦熱氣候下的產物，而召溝組和北票組為中侏囉世早期溫濕氣候下的產物。
통과대내몽고석괴、소륵도、기북화료서북표등주라기함매분지하-중주라통적오당구조、소구조、북표조등적암성급기소함식물화석、고기후적대비연구，인위료서북표조저부적일투조쇄설암위주적잡색암계침적위내몽고서부、기북적오당구조동연부분，건의장기단독화출위오당구조；저부잡색암계지상적함매지층화소구조차별교대，건의잉보류북표조명칭。통과식물화석화포분분석，오당구조위조주라세만기비교간열기후하적산물，이소구조화북표조위중주라세조기온습기후하적산물。
Through comparative study on lithology, containing plant fossils, paleoclimate of lower-middle Jurassic Wudanggou, Zhao?gou and Beipiao formations in Inner Mongolia (Shiguai, Surat), northern Hebei, western Liaoning (Beipiao) Jurassic coal-bearing ba?sins, considered that a set of mainly variegated coarse clastic rock series in western Liaoning Beipiao Formation bottom part are east?ward extending of Wudanggou Formation in western Inner Mongolia and northern Hebei, thus advised to nominate this part as Wudang?gou Formation. While the lithology of Beipiao Formation is quite different from Zhaogou Formation, so the name Beipiao Formation should be retained, specially refer to the original coal bearing strata above bottom variegated rock series. Based on fossil plants and spo?ropollen analysis, Wudanggou Formation is late Early Jurassic Epoch outcome under dry hot climate;while Zhaogou and Beipiao forma?tions are early Middle Jurassic Epoch outcome under warm humid climate.
