新疆石油地质

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (1): 64-66.

• 油气勘探 • 上一篇    下一篇

介形类化石Cypridea (Pseudocypridina)gigantea 的地层及环境意义

郑秀亮, 商华   

  1. 中国石油 新疆油田分公司 勘探开发研究院, 新疆 克拉玛依 834000
  • 收稿日期:2006-05-18 修回日期:2006-06-26 出版日期:2007-02-01 发布日期:2020-07-29
  • 作者简介:郑秀亮(1959-), 男、湖北郧县人, 工程师, 生物地层,(Tel)0990-6867875(E-mail)zhxiuliang@sina.com

Stratigraphic and Environmental Significance of Ostracod Cypridea (Pseudocypridina) Gigantea

ZHENG Xiu-liang, SHANG Hua   

  1. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2006-05-18 Revised:2006-06-26 Online:2007-02-01 Published:2020-07-29

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摘要： 介形类化石Cypridea (Pseudocypridina) gigantea是准噶尔盆地晚白垩世的重要分子,其地质时代应为晚白垩世中晚期,相当于坎潘尼-马斯特里赫特期;在我国上白垩统普遍见到,其地理分布广,地质时限短,可作为晚白垩世的标志分子,在地层划分对比中举足轻重。由于晚白垩世准噶尔盆地普遍发育红层,气候比较干燥,处于氧化及蒸发环境,生物化石较贫乏,介形类化石反映当时为偏淡水浅水环境,生活水域为低盐度的湖泊、沼泽、池塘、河流等,主要为河流-浅湖环境。

关键词: 准噶尔盆地, Cypridea (Pseudocypridina) gigantea, 化石, 晚白垩世

Abstract: Cypridea (Pseudocypridina) gigantea of ostracods is regarded as the important member of Late Cretaceous in Junggar basin. It is an ostracod of the mid-late epoch of Late Cretaceous, corresponding to Campania-Maestrichian epoch, widespread in Upper Cretaceous in China. It can be as a marker member of Late Cretaceous for its broad distribution in geography, but short duration in geologic period and well used for strata classification and correlation. From well-developed red layer of Late Cretaceous in Junggar basin, with drier climate, oxidized and evaporated environment, fewer bio-fossils at that time. The existence of ostracod indicates a little fresh and shallow water environment like lake, marsh, pond, river, etc., with low salinity, mostly being river-shallow lake environment in Late Cretaceous of Junggar basin.

Key words: Junggar basin, Cypridea (Pseudocypridina) gigantea, fossil, Late Cretaceous

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