摘要
报道了首次发现于花海－金塔盆地花海凹陷花探９井、湖西新村、阿拉善左旗早白垩世介形类化石。根据它们的组合面貌及其在国内外分布的主要层位，认为：湖西新村原划归为上侏罗统并含有丰富介形化石的这套地层应属下白垩统；花探９井和阿拉善左旗塔塔水沟含化石地层的时代应为早白垩世。这些新的研究成果为建立该地区中生代地层层序奠定了基础，特别是对认识花海－金塔盆地的形成与演化。
It is reported for the first time that the fossil Ostracods were collected from the Hua exploratory well 9 in the Huahai Depression of the Huahai Jinta Basin, Huxi New Village and Alxa Zuoqi. According to the characteristics of the fossil assemblages as well as the known geological ranges of their main components both at home and abroad, the strata containing abundand Ostracods are referable to the Early Cretaceous in age. This study provides micropaleontological evidence for the subdivision and correlation of the Early Cretaceous stratigraphy in these areas and some new information for understanding the formation and evolution of the Huahai Jinta Basin, especially for going further to find oil and gas resources.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第2期137-140,共4页
Journal of Northwest University（Natural Science Edition）
关键词
介形类
早白垩世
甘肃金塔
化石
油气勘探
Ostracods
Early Cretaceous
Jinta Gansu
Huxi New Village
Alxa Zuoqi
