2020 Vol. 38, No. 6
Display Method:
2020, 38(6): 1123-1139.
doi: 10.14027/j.issn.1000-0550.2020.012
Abstract:
The Meso⁃Neoproterozoic strata in the southern margin of the North China Craton （NCC） are well developed and exposed. In this study， after summarizing and comparing the results of previous work， four typical fundamental profiles and three key auxilia...
2020, 38(6): 1140-1151.
doi: 10.14027/j.issn.1000-0550.2019.115
Abstract:
In the late Neoproterozoic， the Earth experienced two "Snowball Earth" events， which had a significant impact on the marine oxidation and the diversification of multicellular organisms in the subsequent Ediacaran period. However， due to the lack of c...
2020, 38(6): 1152-1165.
doi: 10.14027/j.issn.1000-0550.2019.113
Abstract:
Based on analysis of cores， thin sections， scanning electron microscopy， well⁃logging ， and correlation analytic data of the upper member of the Paleogene Lower Ganchaigou Formation （E 3 2 E 3 2
2020, 38(6): 1166-1178.
doi: 10.14027/j.issn.1000-0550.2020.001
Abstract:
The Xiqiao section located in the southern subtropical zone of China mainly comprises lacustrine facies formed since the Marine Isotope Stage 5b （MIS5b）. For 759 samples from the Xiqiao section， analyses of the main element oxides SiO2， Al2O3 and TOF...
2020, 38(6): 1179-1191.
doi: 10.14027/j.issn.1000-0550.2019.121
Abstract:
Recent advances in sequencing technologies now permit the analysis of plant DNA from fossil samples and enable the reconstruction of paleovegetation at the molecular level. Some studies have suggested that sediment aDNA from sediments is a powerful t...
2020, 38(6): 1192-1203.
doi: 10.14027/j.issn.1000-0550.2019.112
Abstract:
Drainage evolution reconstruction is crucial for understanding global change and the regional response. As the most important river in northeast China， the study of the evolution of the Songhua River system is extremely weak. Whether the water system...
2020, 38(6): 1204-1214.
doi: 10.14027/j.issn.1000-0550.2020.002
Abstract:
As part of the “sediment source to sink” study， the provenance of sediment in East Asian marginal seas is of great importance， thus making the provenance of Changjiang sediment over different timescales one of the critical research issues. Trace elem...
2020, 38(6): 1215-1225.
doi: 10.14027/j.issn.1000-0550.2019.119
Abstract:
Delta deposits show great spatial heterogeneity in erosion and depositional patterns. Magnetic properties of sediments are sensitive to the sediment source， hydrodynamics， and early diagenesis and， therefore， can indicate spatial heterogeneity in an ...
2020, 38(6): 1226-1238.
doi: 10.14027/j.issn.1000-0550.2019.118
Abstract:
The ratio of Sr/Ba is a commonly used methods for the distinction between terrestrial and marine sedimentary environments. "The Sr/Ba Ratio is less than 1.0 for terrestrial sedimentary environments and more than 1.0 for marine sedimentary environment...
2020, 38(6): 1239-1248.
doi: 10.14027/j.issn.1000-0550.2020.009
Abstract:
One of the main focuses of research in the field of prehistoric environmental change and civilization evolution in China is the prehistoric calamities that occurred in the area of the Lajia Ruins in the Guanting Basin along the Upper Yellow River， be...
2020, 38(6): 1249-1257.
doi: 10.14027/j.issn.1000-0550.2019.106
Abstract:
Burullus Lagoon is a a high， closed lagoon at the mouth of the Nile River， whose nutrients were mainly from the Nile. It is a critical area for studying how the changes in the Nile Basin has affected the lake environment of the Nile estuary after the...
2020, 38(6): 1258-1271.
doi: 10.14027/j.issn.1000-0550.2019.105
Abstract:
Laser ablation inductively coupled plasma⁃mass spectrometry （LA⁃ICP⁃MS） U⁃Pb was used on detrital zircons to analyze the provenance of the early Upper Triassic in the Tanjinggou， Chaqigou and Ciyaobao areas of the Helan Mountain in the northwestern O...
2020, 38(6): 1272-1283.
doi: 10.14027/j.issn.1000-0550.2019.114
Abstract:
Due to the influence of a deep buried depth and complex salt structure， it is difficult to study the deep⁃water Wilcox deposition. Therefore， it is necessary to conduct large⁃scale source⁃to⁃sink system analysis to understand the changes of the Wilco...
2020, 38(6): 1284-1295.
doi: 10.14027/j.issn.1000-0550.2019.108
Abstract:
Based on measurement of field outcrops， microscopic thin section identification， cathodoluminescence analysis and geochemical analysis， this paper systematically studied the genesis of dolomite in the lower Cambrian Longwangmiao Formation， northeaste...
2020, 38(6): 1296-1312.
doi: 10.14027/j.issn.1000-0550.2020.006
Abstract:
Petrographic， mineralogical， stable isotopic and elemental data from the late Quaternary carbonates at Xisha Islands indicate that the sequences were calcitized in a near⁃surface meteoric diagenetic environment. The variation in the distribution of a...
2020, 38(6): 1313-1326.
doi: 10.14027/j.issn.1000-0550.2020.007
Abstract:
The northern slope of Wenchang B Sag lies between the Sag and the Qionghai Uplift， With the deepening of exploration， the breakthrough in this area becomes increasingly important. The Zhuhai Formation is an important oil bearing formation in the Wenc...
2020, 38(6): 1327-1337.
doi: 10.14027/j.issn.1000-0550.2020.011
Abstract:
The petrological characteristics， diagenesis and porosity evolution of Zhuhai Formation reservoirs in the eastern Huizhou Sag were studied based on data from thin sections， scanning electron microscopy， grain⁃size analysis and X⁃ray diffraction. The ...
2020, 38(6): 1338-1348.
doi: 10.14027/j.issn.1000-0550.2019.122
Abstract:
Meandering rivers developed from north to south formed the second member of the lower Permian Shanxi formation （P1 s 2） in Su77 block， Sulige gas field. The sedimentary characteristics of each gas⁃bearing member were consistent. The first and second ...
