南海北部早第三纪流沙港组孢粉组合

中国科学院大学学报

南海北部早第三纪流沙港组孢粉组合

1孙湘君, 1孔昭宸, 2李明兴, 2李彭

1(中国科学院植物研究所)
2(南海石油勘探指挥部)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1982-02-18 发布日期:1982-02-18
通讯作者: 孙湘君

Palynoflora of the Liushagang formation (Eocene-Early Oligocene) in the northern part of South China Sea

Sun Xing-Jun, Kong Zhao-Chen, Li Ming-Xing, Li Pun

Received:1900-01-01 Revised:1900-01-01 Online:1982-02-18 Published:1982-02-18
Contact: Sun Xing-Jun

摘要/Abstract

Abstract:

In the northern part of South China Sea, including Tonkin Gulf, Hainan lsland,

Leizhon Peninsula and some basin of Guangdong Province, Paleogene deposits are

composed of three formations: the Weizhon, the Liushagang and the Changliu forma-

tions arranged in descending order. The paper on the palynoflora of the Weizhon

Formation (early and middle Oligocene) is in press^[2]. This paper deals only with the

palynoflora of the Liushagang Formation, with may be divided into four main stages:

The first stage is represented by Monocolpollenites tranquillus and Crassoretitri-

letes sp., assigned to early Eocene The second stage is characterized by Salixipollenites,

Momipites triletipollenites and Operculumpollis. Its age is middle Eocene. The third

stage is dominated by some species of Quercoidites and Ulmipollenites and also

characterized by the presence of Platycaryapollenites and Prominangularia dogying-

ensis, This sporo-pollen assemblage suggests a late Eocene in age. The fouth stage is

marked by profusion of some alga of brockish water, such as Rugasphera corrugia,

Granodiscus gronulatus and some pollen types of Liquidambarpollenites minutus,

Multiporopollenites puctatus and Tricolporopollenites minutus. The age of the last

stage is assigned to early oliocene.

In generaly, the palynoflora of the Liushagang Formation is quite different from

that of the Weizhou Formation. The main types of spores and pollen are common

with those found in Europe and North America of the same age, while the Weizhou

Formation has many elements common both in this region and Borneo.

During Eocene and early Oligocene this area was of continental phase with

brackish basins. At the beginning the climate was rather moist and hot, but then it

became moist and warmtemperate.

孙湘君, 孔昭宸, 李明兴, 李彭. 南海北部早第三纪流沙港组孢粉组合[J]. 中国科学院大学学报.

Sun Xing-Jun, Kong Zhao-Chen, Li Ming-Xing, Li Pun. Palynoflora of the Liushagang formation (Eocene-Early Oligocene) in the northern part of South China Sea[J]. .