极地研究

极地研究 ›› 1996, Vol. 8 ›› Issue (4): 62-70.

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南极长城湾NG931柱全新世介形类及其环境分析

蔡慧梅   

  • 出版日期:1996-12-30 发布日期:1996-12-30

HOLOCENE OSTRACODA AND SEDIMENTARY ENVIRONMENT OF CORE NG931 FROM GREAT WALL BAY, ANTARCTICA

  • Online:1996-12-30 Published:1996-12-30

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摘要：

本文材料系南极长城湾ＮＧ９３１柱状样品分析的介形类。共计１１属２１种，其中以Ｌｏｘ－ｏｒｅｔｉｃｕｌａｔｕｍｆａｌａｘ为占最优势组成分子，其次，Ｘｅｓｔｏｌｅｂｅｒｉｓｋｅｒｇｕｅｌｅｎｅｎｓｉｓ，Ｘｅｓｔｏｌｅｂｅｒｉｓｓｐｐ．，Ｓｅｍｉｃｙｔｈｅｒｕｒａｓｐｐ．和Ａｕｓｔｒａｌｉｃｙｔｈｅｒｅｐｏｌｙｌｙｃａ等也为该柱样中介形类的主要组成分子。根据资料分析，ＮＧ９３１柱样中介形类属种绝大部分为南极地区所出现的介形类动物群中的已知类型，它们之间有一定的相似性，推测其生境也有可能相近似。从介形类属种组成上看，应属滨岸－浅海的沉积环境

关键词: 长城湾,南极,介形类,沉积环境

Abstract:

Ostracoda faunas are analysed in the core NG931 sediments collected from the Great Wall Bay, Antarctica during 1992-1993. Totally 11 genera 21 species have been identified in the sediments, of which the most abundant is Loxoreticulatum fallax , the second abundant are Xestoleberis keguelenensis , Xestoleberis spp, Semicytherura spp, and Australicythere polylyca et al .. Most of them are the species of the ostracod fauna occurred in Antarctica area. Based on the study of ostracoda fauna from core NG931, the Holocene sedimentary environment is shore shallow sea.