Depositional Environments and Fossil Bivalves in the Lowermost Parts of the Triassic Systems in North Vietnam and South China
Depositional Environments and Fossil Bivalves in the Lowermost Parts of the Triassic Systems in North Vietnam and South China
复制标题
越南北部和华南三叠系最下部的沉积环境和双壳类化石
DOI：
10.5026/jgeography.115.4_470
复制
发表时间：
2006
影响因子：
3.1
通讯作者：
Jin
中科院分区：
文献类型：
--
作者：
T. Komatsu;H. Tran;Jin
下三叠统洪义组出露于越南北部河江省。该地层的最低部分由钙质丘状交错层状桑迪泥岩、钙质泥岩和泥灰岩组成，解释为在深斜坡环境中堆积。在浙江黄子山银坑组下部的泥灰岩和钙质泥岩中发现了Pteria ussurica variabilis、T. scythica，C. wangi，Claraia sp.，Eumorphotis sp.，和原肌藻属，尽管底部有二叠纪的化石此外，在浙江梅山剖面（P-T界线的GSSP），银坑组下部以盆地泥岩为主，含有丰富的准原地和外来的Claraia wangi。C. wangi可能广泛栖息在盆地到风暴为主的浅海环境中。T. scythica和大多数种类的Eumorphotis是下三叠统风暴浪底以上浅海环境中的特征性双壳类。
The Lower Triassic Hong Ngai Formation crops out in Ha Giang Province, North Vietnam. The lowermost part of this formation is composed of calcareous hummocky cross-stratified sandy mudstone, calcareous mudstone, and marlstone, and is interpreted to have accumulated in a deep ramp environment. Pteria ussurica, Towapteria scythica, Claraia wangi, Eumorphotis teilhardi, and Promyalina sp. are found in these sediments, and indicate parautochthonous occurrences.In Huangzishan, Zhejiang Province, South China, the lower part of the Yinkeng Formation consisting of marlstone and calcareous mudstone yields Lower Triassic bivalves, such as Pteria ussurica variabilis, T. scythica, C. wangi, Claraia sp., Eumorphotis sp., and Promyalina sp., although basal parts yield Permian fossils. Besides, in the Meishan section (GSSP of P-T boundary), Zhejiang Province, the lower part of the Yinkeng Formation is predominated by basin mudstone containing abundant parautochthonous and allochthonous Claraia wangi. C. wangi probably widely inhabits basin to storm-dominated shallow marine environments. T. scythica and most species of Eumorphotis are characteristic bivalves in the Lower Triassic shallow marine environments above the storm wave base.
越南北部宋达盆地和安州盆地的下三叠世双壳类化石。
DOI：
--
发表时间：
2007
期刊：
Paleontological Research Vol. 11
影响因子：
--
作者：
Komatsu;T. and Dang;T. H.
通讯作者：
T. H.
中三叠世（Anisian）多样化的双壳类
DOI：
--
发表时间：
2004
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology 208
影响因子：
--
作者：
Komatsu;T.;Chen;J.;Cao;M.;Stiller;F.;Naruse;H.
通讯作者：
H.