CAJ | 학술논문

柴达木盆地上干柴沟组分布十分广泛，对盆地内沉积型矿产资源的形成和勘探开发具有重要意义。长期以来，受多种因素影响，其时代归属一直沿用中新统上干柴沟组（地层代号为 N1 sg 或 N1）。近年来对上干柴沟组古地磁、裂变径迹热年代学等的研究结果表明，该组应划归渐新统或渐新统－中新统，但是在绝大部分公开出版物中至今仍然没能改变长期以来的习惯称谓，这种状况已经在一定程度上制约和影响了针对该组的地层对比、盆地原型恢复和油气勘探与开发。综合前人在地层岩性、古生物组合和古地磁、裂变径迹测年等方面的研究成果，对照最新国际地层年代表，建议将上干柴沟组归属于渐新统－中新统，地层代号使用 E3 N1 sg。
시체목분지상간시구조분포십분엄범，대분지내침적형광산자원적형성화감탐개발구유중요의의。장기이래，수다충인소영향，기시대귀속일직연용중신통상간시구조（지층대호위 N1 sg 혹 N1）。근년래대상간시구조고지자、렬변경적열년대학등적연구결과표명，해조응화귀점신통혹점신통－중신통，단시재절대부분공개출판물중지금잉연몰능개변장기이래적습관칭위，저충상황이경재일정정도상제약화영향료침대해조적지층대비、분지원형회복화유기감탐여개발。종합전인재지층암성、고생물조합화고지자、렬변경적측년등방면적연구성과，대조최신국제지층년대표，건의장상간시구조귀속우점신통－중신통，지층대호사용 E3 N1 sg。
Upper Ganchaigou Formation,widely distributed in Qaidam Basin,has great significance to the form-ing and exploration of depositional resources.For a long time,its age assignment and stratal code has been adopting the Miocene and N 1 sg,respectively.In the recent years,with the development of dating technique such as paleomagnetism dating and apatite fission track dating,some scholars revised age determination of Upper Ganchaigou Formation,and held that it should be assigned to Oligocene or Miocene-Oligocene.Howev-er,it is still assigned to Miocene in most of publications.On the basis of analyzing the former achievements on stratum lithology,biostratigraphy,paleomagnetism and apatite fission track dating,this paper suggests that the age assignment of Upper Ganchaigou Formation is Miocene-Oligocene with the stratal code of E3 N 1 sg.