2022 Vol. 40, No. 2
Display Method:
2022, 40(2): 281-291.
doi: 10.14027/j.issn.1000-0550.2021.155
Abstract:
Sedimentology and basin dynamics have become the main disciplines in geology in China, and have strong social needs. This study summarizes the applications and funding records of the National Natural Science Foundation (NSFC) generally in China, and ...
2022, 40(2): 292-318.
doi: 10.14027/j.issn.1000-0550.2021.108
Abstract:
Sequence stratigraphy is a research focus in geosciences. It is widely used in the analysis of sedimentary basins and for hydrocarbon exploration and development. Sequence stratigraphic theory and methodology based on marine basins has been establish...
2022, 40(2): 319-334.
doi: 10.14027/j.issn.1000-0550.2021.137
Abstract:
The study of ooids has a long history, and there is not yet a consensus as to their origin. The “inorganic process” that has been accepted by most sedimentologists has recently been challenged by the accumulating evidence of microbially-mediated mine...
2022, 40(2): 335-349.
doi: 10.14027/j.issn.1000-0550.2020.119
Abstract:
The formation mechanism of dolomite has always been the focus of geologists. The microbial dolomite model is an important supplement to the "dolomite problem". Microbial processes can not only provide nucleation sites, but also significantly improve ...
2022, 40(2): 350-359.
doi: 10.14027/j.issn.1000-0550.2020.135
Abstract:
Many mechanisms have been suggested in previous studies as to the genesis of dolomite, but many of them are unconvincing and lack strong evidence. Studies in recent years have shown that dolomite is deposited at room temperature with the help of micr...
2022, 40(2): 360-379.
doi: 10.14027/j.issn.1000-0550.2021.011
Abstract:
Dating sedimentary rocks and reconstructing the diagenetic process continue to be urgent scientific problems in the field of chronology. This study introduces traditional long-lived radioisotope systems suitable for sedimentary rocks and systematical...
2022, 40(2): 380-395.
doi: 10.14027/j.issn.1000-0550.2020.129
Abstract:
Time series analysis has been widely employed in the study of Milankovitch cycles in recent years. It uses mathematical transformation to quantitatively analyze the stratigraphic data series, so as to identify the astronomically forcing cycle signals...
2022, 40(2): 396-409.
doi: 10.14027/j.issn.1000-0550.2021.031
Abstract:
Conodonts are phosphatic fossils widely distributed in Cambrian to Triassic marine strata. Due to the advantage of well preservation, the oxygen isotope values of conodont apatite have been used to constrain coeval seawater temperature. In this conte...
2022, 40(2): 410-421.
doi: 10.14027/j.issn.1000-0550.2020.124
Abstract:
Based on the sandstone physical property test data of 10 wells in the western Yuanba area, northeastern Sichuan, this paper analyzes the characteristics and physical control factors of tight sandstone reservoirs by means of casting thin sections, sca...
2022, 40(2): 422-434.
doi: 10.14027/j.issn.1000-0550.2021.027
Abstract:
Tight sandstones are well developed in the Upper Paleozoic in the Ordos Basin. Burial diagenesis in the reservoirs of the Hangjinqi area and Daniudi gas field are quite different. Their comparative study is helpful in understanding the formation proc...
2022, 40(2): 435-449.
doi: 10.14027/j.issn.1000-0550.2021.144
Abstract:
A submarine fan is a body of sediment on the sea floor deposited by sedimentary gravity flows. Taxonomy and facies models indicate that submarine fans mainly comprise submarine channel, overbank and lobe depositional elements. However, previous case ...
2022, 40(2): 450-464.
doi: 10.14027/j.issn.1000-0550.2021.035
Abstract:
Many siliceous rocks are located at key stratigraphic intervals and can provide critical information regarding the formation of sedimentary basins, tectonic orogens, and climatic settings. Previous studies have mainly focused on the siliceous rocks t...
2022, 40(2): 465-472.
doi: 10.14027/j.issn.1000-0550.2021.043
Abstract:
Unconsolidated sand bodies are prone to liquefaction due to external forces, forming sedimentary structures such as sand volcanoes and liquefied sandstone veins. Earthquakes are the most common triggers of liquefaction. A large number of sand volcani...
2022, 40(2): 473-483.
doi: 10.14027/j.issn.1000-0550.2020.103
Abstract:
The Triassic-Jurassic transition (~201 Ma) was a critical period in the Earth’s history. The rapid emplacement and eruption of the Central Atlantic Magmatic Province (CAMP) put huge environmental pressure on the global surface ecosystem. One example ...
2022, 40(2): 484-493.
doi: 10.14027/j.issn.1000-0550.2021.033
Abstract:
Affected by the tropical monsoon climate and the land inputs, the Gulf of Thailand (GOT) is characterized by extensive land-ocean interaction, making it an ideal region for studying the relationship between organic carbon burial in sediments and the ...
2022, 40(2): 494-507.
doi: 10.14027/j.issn.1000-0550.2020.099
Abstract:
Aggradated red earth is a typical eolian deposit in the mid-subtropical zone, where it is characterized by simultaneous deposition and weathering. The complete stratigraphy includes four soil units (upwards from the base): a reticular gravel unit, a ...
2022, 40(2): 508-524.
doi: 10.14027/j.issn.1000-0550.2020.091
Abstract:
Measurement of magnetic susceptibility anisotropy and paleomagnetic analysis of the core C-P19 in the Parece Vela Basin of the western Pacific Ocean established the age framework of the magnetostratigraphy. Grain size and clay minerals analysis deter...
2022, 40(2): 525-533.
doi: 10.14027/j.issn.1000-0550.2020.083
Abstract:
The sedimentary record of organic carbon from the East China Sea inner shelf was explored by determining the lignin in core T06. The transport mechanism of organic matter in different historical environments along the Zhejiang⁃Fujian coast was also i...
2022, 40(2): 534-546.
doi: 10.14027/j.issn.1000-0550.2020.076
Abstract:
The sedimentary strata of Chang-8 section in Huanxi-Pengyang south section of Ordos Basin are dominated by braided river delta plain and their reservoir quality is obviously controlled by sedimentary microfacies. Based on core observation, slice obse...
2022, 40(2): 547-556.
doi: 10.14027/j.issn.1000-0550.2021.145
Abstract:
Molecular markers play an increasingly important role in the study of early life evolution and paleoenvironment of the Precambrian ocean. Typical molecular markers have been detected in the black shale of the Mesoproterozoic Xiamaling Formation in th...
2022, 40(2): 557-572.
doi: 10.14027/j.issn.1000-0550.2020.136
Abstract:
In recent years, a significant amount of oil and gas reservoirs have been discovered in the Hari sag of the Yingen-Ejinaqi Basin, which proves that the area is a good prospect for oil and gas exploration. However, due to the complex geological condit...