The basin experienced early deep marine semi deep marine flysch sedimentation and later continental molasses sedimentation and was subjected to three periods of tectonic deformations during its evolution. These were early solid plastic deformation, middle stage regional fold and sliding deformation and later complex deformation under thrust nappe and shearing mechanism
and the Limestone Formation of the Upper Shujiaba Group formed in a bathyal to abyssal basin at the north margin of the West Qinling microplate in the Devonian.
The analysis of the characteristics of the profile, petrology, sedimentology and geochemistry show that the gravel came from the shallow water carbonate platform and was transported to the slope or bathyal zone as carbonate debris flow along the slope of margin of carbonate platform.
The Lixian-Minxian foreland basin undertook abyssal-bathyal flysch deposition at its earlier evolution stage and continental molasse stage at its later evolution stage.
Fragments of the calcareous green alga Halimeda form a large part of the sediment in the fringing reef system and adjacent deep marine environments of Grand Cayman Island, West Indies.
According to previous works, geological features of the rocks on top of the anomalous wedge indicate that during the Cretaceous this zone constituted a deep marine environment which underwent important crustal thinning related to rifting.
The red colour is due to presence of hematite pigment, and indicates oxidizing conditions during early diagenesis in a relatively deep marine environment.
Deformation involved north-vergent thrust imbrication of the basement and the emplacement of allochthonous deep marine Triassic series over the Jurassic metasediments.
The present paper emhodies the results of investigations on the composition of fouling organisms of Yu-lin harbour and its seasonal variation. A comparison is made of the fouling organisms of this harbour with those of Amoy harbour in the respects of their composition, biomass and seasonal fluctuation.The dormanant fouling plants of Yu-lin harbour are: Enteromorpha clathrata, E. tubulosa, Ectocapus confervoides, Giffordia spp. and Sp(?)ridia filamentosa, and the dormanant fouling animals are: Hydroldes sp.,...
What causes the earth crust to move? This is a principal theoretical problem of the earth science and has been a point at issue among the geologists. In this paper, a new hypothesis is presented in respect of this problem-the hypothesis of density equilibrium ellipsoid. In support of this hypothesis, the writer puts forward his views on a series of geological phenomena, such as the formation of the Himalaya range, San Andres fault, geosynclines, deep-sea troughs, ε-type structuses, etc.