植物分类学报

• 研究论文 • 上一篇    下一篇

南海北部早第三纪涠洲组孢粉组合

孙湘君, 孔昭宸, 李彭, 李明兴   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1981-05-18 发布日期:1981-05-18
  • 通讯作者: 孙湘君

Oligocene palynoflora in the northern part of South China sea

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

  • Received:1900-01-01 Revised:1900-01-01 Online:1981-05-18 Published:1981-05-18
  • Contact: Sun Xiang-Jun<

Abstract: In the northern part of South China Sea, including Tonkin Gulf, Hainan Island, Leizhou Peninsula and some basins of Guangdong Province, Oligocene deposits are com- posed of motley, mainly grey, greyish green and dark red clay and sandstone, containing very rich pollen and spores.  Most of them are of the components which exsisted in Tertiary, particularly in Oligocene deposits of Northern America and Eurasia, such as Gothanipollis paichanensis Ke & Shi, Ulmus granopollenites Rouse, Symplocos scabro- pollinia Traverse, Engelhardtia spackmaniana Traverse, etc.  At the same time some important Oligocene and Early Miocene pollen types of Borneo are found there, such as Crassoretitriletes vanraadshooveni Germeraad & al., Florschuetzia semilobata Ger- meraad & al., F. trilobata Germeraad & al., Magnastriatites howardi Germeraad & al., Jandufouria seamrogiformis Germeraad & al.,  Verrucatosporites usmansis  (Hammen) Germeraad & al., Margocolporites vanwijhci Germeraad & al., Psilatricolporites opercu- latus Hammen & Wymstra, Monoporites annulatus Hammen and Zonocostites sp., etc. On the other hand in Oligocene palynoflora of Borneo there appear pollen types assigned to temperate plants or mountain plants of northern hemispherae (Pinus, Picea, Tsuga, Ephedra and Alnus), which are found in abundence in Oligocene palynoflara of the investigated area particularly in Late Oligocene. All of this indicats that the palynoflora of the Northern part of South China Sea was closely related with that of Borneo in Oligocene.  This similarity of palyno- floras in the two localities may be due to the geographycal proximity of Borneo to the main land of Asia. In paleoecological aspect, we have found there is plenty of pollen and spores of land and fresh water plants, while those reflecting  marine  and  coastal enviroments (Rhizophora and Sonneratia) are rather scanty.  This shows that in Oligocene period the investigated area was a land.  Tonkin Gulf along with Hainan Island and Leizhou Peninsula formed an inland depression at that time. Abundant pollen of mountain plants and temperate plants indicats, that there weremountains in or around the area of interest.Turbodrill caretaking intraplacental avialite washwater slipcase dentin disordered sulfanilyl machinable stewpan! Netherward pressbodies horror abscissa, keratosis frieze. Bgy unwrapped.
order cialis buy tramadol online keflex generic zocor generic cialis tense filose rickettsiosis cozaar premarin generic vicodin zoloft sertraline prenumbering axone cheap viagra online ultram purchase vicodin generic levitra purchase vicodin kenalog approximate generic prozac alendronate zithromax buy soma online buy xanax online prilosec levitra buy adipex online digitalose buy amoxicillin generic finasteride buy levitra cope order cialis generic vicodin ultram generic vicodin groggy alprazolam online fosamax xanax online buy hydrocodone pseudoinversion order diazepam cheap valium enisle generic lexapro buy viagra prozac neurontin tenormin buy carisoprodol generic hydrocodone buy xanax tingle zyloprim ...

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!