2022 Vol. 40, No. 3
Display Method:
2022, 40(3): 573-598.
doi: 10.14027/j.issn.1000-0550.2021.003
Abstract:
The term ‘automicrites’， also known as in situ microcrystalline Ca-carbonate， or‘lime mud’ in places， is used to distinguish them from allomicrites （allochthonous micrites）. Automicrites are the microcrystalline calcium carbonate formed in situ by in...
2022, 40(3): 599-615.
doi: 10.14027/j.issn.1000-0550.2021.049
Abstract:
Paleogeographic environment is one of the key factors controlling the development of volcanic oil and gas reservoirs.At present， the research on the discrimination between terrestrial and underwater eruptive sedimentary volcanic rocks mainly focuses ...
2022, 40(3): 616-625.
doi: 10.14027/j.issn.1000-0550.2021.015
Abstract:
Oil shale is widely developed in Member 2 of Liushagang Formation of the Weixinan Sag and Wushi Sag in the Beibuwan Basin. Organic geochemical analysis shows that oil shale in Member 2 contains an abundance of organic matter. The lower limit of TOC f...
2022, 40(3): 626-640.
doi: 10.14027/j.issn.1000-0550.2021.045
Abstract:
The Permian Lucaogou Formation in the Jimusaer Sag， Junggar Basin， has a complex lithology and various lithofacies， and urgently requires a lithofacies-matching logging identification method to be established. In this study， core slice， conventional ...
2022, 40(3): 641-652.
doi: 10.14027/j.issn.1000-0550.2021.017
Abstract:
The Chang 7 member in the Longdong area of the Ordos Basin contains huge gravity-flow sandbodies and rich oil and gas resources. However， their shape， scale and superpositional relationships differ considerably in different strata regions， and very l...
2022, 40(3): 653-666.
doi: 10.14027/j.issn.1000-0550.2021.113
Abstract:
To study the relationship between the mass extinction of life in the Ordovician and the paleoenvironment and paleogeography of that period， total organic carbon （TOC）， major elements， trace elements and carbon isotope geochemical analyses were carrie...
2022, 40(3): 667-678.
doi: 10.14027/j.issn.1000-0550.2020.100
Abstract:
This clarification of the changes in sedimentary migration and Mesozoic and Cenozoic prototype basins in the eastern segment of the Qaidam Basin was based on a field geological survey of Mesozoic and Cenozoic strata. Interpretation of seismic section...
2022, 40(3): 679-690.
doi: 10.14027/j.issn.1000-0550.2021.064
Abstract:
Considerable progress has been made in studies of the distribution， age and paleoclimatic significance of loess deposits in arid central Asia. However， the focus has been on long-term drying trends （since 800 ka） or short-term moisture evolution （sin...
2022, 40(3): 691-700.
doi: 10.14027/j.issn.1000-0550.2020.117
Abstract:
A piston core （OKT-3） is collected from the middle southern Okinawa Trough （26.018 °N， 125.282 °E） at a water depth of 1 792 m， providing depositional records since 17.3 ka. Total organic carbon， total nitrogen content， and organic carbon isotope dat...
2022, 40(3): 701-714.
doi: 10.14027/j.issn.1000-0550.2021.018
Abstract:
The genetic relationship between the Cambrian Explosion and the evolution of the paleo-marine environment is one of the frontier scientific issues in tracing the origin and development of life， environmental changes， and their co-evolution. The Cambr...
2022, 40(3): 715-729.
doi: 10.14027/j.issn.1000-0550.2021.139
Abstract:
During the Neoproterozoic “Snowball Earth” glaciations， ice sheets probably covered the entire surface of the Earth. Knowledge of marine environmental conditions during the glaciation and the survival of eukaryotic life forms in such conditions has b...
2022, 40(3): 730-738.
doi: 10.14027/j.issn.1000-0550.2020.053
Abstract:
This work studied the flow and deposition of sudden-release turbidity currents with equal initial volume passing over different slope breaks by applying the Bussinesq-assumption adopted RANS model. The following main conclusions are obtained： the gro...
2022, 40(3): 739-752.
doi: 10.14027/j.issn.1000-0550.2021.012
Abstract:
This study discusses the mineralization of rhenium associated with uranium in the Qianjiadian uranium deposit. Present studies of the geochemical characteristics of rhenium in this area are combined with previous research results. The content of rhen...
2022, 40(3): 753-764.
doi: 10.14027/j.issn.1000-0550.2021.007
Abstract:
A grain-size analysis of 128 surface sediment samples collected from Lingding Bay （LDB） in 2016 and were combined with earlier values for the surface sediment in LDB in a Flemming sediment dynamics discrimination diagram and grain-size trend analysis...
2022, 40(3): 765-773.
doi: 10.14027/j.issn.1000-0550.2021.005
Abstract:
To date， the pattern of Dansgaard-Oeschger （DO） events in response to monsoon climate is a question of greatest interest in paleoclimate research. Whether it is manifested as a single pattern or as multiple patterns remains controversial. A high-reso...
2022, 40(3): 774-786.
doi: 10.14027/j.issn.1000-0550.2020.116
Abstract:
Tidal flats are one of most vital regions in the world. In the Zhejiang and Fujian Coastal regions， the tidal flat is the most important reserved land resource. Research on the provenance of tidal flat sediment along the coast of Zhejiang and Fujian ...
2022, 40(3): 787-800.
doi: 10.14027/j.issn.1000-0550.2021.140
Abstract:
The Triassic Yanchang Formation in the Ordos Basin consists of multiple source-reservoir-cap packages， of which the Longdong is one of the most important oil-producing areas. Progradational continuous strong reflections predominate in the Longdong ar...
2022, 40(3): 801-812.
doi: 10.14027/j.issn.1000-0550.2020.137
Abstract:
Sandstone groups and monolayers were studied in terms of Milankovitch astronomical cycles by dividing and contrasting oil reservoirs in a delta front. Spectral analysis and wavelet transforms revealed that the Milankovitch cycles are reflected in the...
2022, 40(3): 813-824.
doi: 10.14027/j.issn.1000-0550.2020.138
Abstract:
The types and evolutionary process of rivers in the upper member of the Neogene Guantao Formation and bottom of the Minghuazhen Formation in the offshore area of the Shengli oilfield were studied by careful observation and description of sealed drill...
2022, 40(3): 825-837.
doi: 10.14027/j.issn.1000-0550.2021.146
Abstract:
Shelf-margin deltas， as important petroleum reservoirs， were widely developed in the Upper Oligocene strata of the south subsag of Baiyun Sag in the Pearl River Mouth Basin. It is also a research hotspot of sedimentary and petroleum geology. Based on...
2022, 40(3): 838-848.
doi: 10.14027/j.issn.1000-0550.2020.096
Abstract:
Shoreland sandbars are the main hydrocarbon reservoir type and exploration target in S Block， South Asia area. Sandbar reservoirs usually feature high porosity and high permeability. However， further evaluation of the oil and gas field has found that...
2022, 40(3): 849-860.
doi: 10.14027/j.issn.1000-0550.2022.003
Abstract:
To repair petroleum hydrocarbon pollution of saline alkaline soil in the arid area of northwestern China using an efficient environmental protection method， petroleum hydrocarbon degrading bacteria were screened， isolated and degraded at ten sampling...
