The Storm Deposits Sedimentary Formation in Upper Ganchaigou Group of Youshashan Oilfield in Qaidam Basin

2013 ◽  
Vol 779-780 ◽  
pp. 1376-1378
Author(s):  
Rui Tang ◽  
You Bin He ◽  
Jun Tang ◽  
Yong Hou ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Shallow Lake ◽  
Carbonate Rocks ◽  
Qaidam Basin ◽  
River Delta ◽  
Clay Rock ◽  
Sedimentary Sequence ◽  
The Core ◽  
Sedimentary Model ◽  
Sedimentary Formation ◽  
Storm Deposits

Base on the observation on the core of the Upper Ganchaigou Group of Youshashan Oilfield in Qaidam Basin (N1) and the analysis into the sedimentary background and structure, as well as previous foundings, the Neogene Period in the River Delta can be found as a-shallow lake deposition environment. The Upper Ganchaigou group in the study area is dominated by sandstone, siltstone, clay rock and little carbonate rocks. The sedimentary structures are rich, and it mainly includes: gutter cast (pocket structure), scour surface and truncated structure, hummocky cross-bedding, lapped bedding, wave bedding and so on. By summing up the above characteristic, this area is thought to have the characteristics of storm deposits, and in accordance with the storm sedimentary sequence, a sedimentary model is established.

Sedimentary sequence and architecture analysis by integrating multi-discipline data — An example of a sandy conglomerate reservoir in Qie12 block, Qaidam Basin, NW China

2020 ◽  
pp. 1-36
Author(s):  
Gong Qingshun ◽  
Liu Zhanguo ◽  
Zhu Chao ◽  
Ni Guohui ◽  
Song Guangyong ◽  
...  
Keyword(s):  
Development Strategy ◽  
Qaidam Basin ◽  
Flood Plain ◽  
Alluvial Fan ◽  
Sedimentary Sequence ◽  
Architecture Model ◽  
The Core ◽  
Development Data ◽  
Sedimentary Microfacies ◽  
Frequency Sequence

Understanding the sedimentary sequence and architecture is important for planning the development strategy. We illustrate a case study of analyzing the sequence and architecture of a sandy conglomerate reservoir by integrating geology, petrophysics, seismic, and development data. The analysis indicates that the depostional environment of the target lower part of the Ganchaigou Formation is an alluvial fan. We defined eight lithofacies according to the core analysis and five sedimentary microfacies by integrating the core and petrophysical data. We next propose four sedimentary architectural models by integrating the lithofacies result, microfacies analysis, and high frequency sequence models. The four architecture models include the extensively connecting body sandwiched with intermittent channels, the composite channel formed by the overlapping and separation of stable channels, the lateral alternated braided channel and sheet flow sediment, and the runoff channel inlaid in flood plain mudstone. We finally build an architecture model for the alluvial fan. The model of the alluvial fan overall shows an upward-fining grain-size features and this feature indicates that the alluvial fan belongs to a retrograding sequence. The built model consists of six alluvial fan bodies that migrates from north.

scholarly journals Research on Supply Chain Integration under Service-oriented Logics and Joint Influence of Dual Innovation on Corporate Performance Path

2021 ◽  
Vol 13 ◽  
pp. 101-108
Author(s):  
Yunfan Yang ◽  
Luyao Han ◽  
Bohan Zhang ◽  
Xiong Yang
Keyword(s):  
Supply Chain ◽  
Internal Control ◽  
Manufacturing Industry ◽  
Corporate Performance ◽  
Rapid Development ◽  
River Delta ◽  
Supply Chain Integration ◽  
Manufacturing Companies ◽  
The Core ◽  
Service Oriented

The rapid development of economic globalization and the promotion of emerging technologies have spawned a Service-oriented logic that gradually dominates the contemporary industry, and the path for manufacturing companies to improve performance has become more and more complicated. Based on this background, the article uses the data of A-share listed companies in the manufacturing industry in the Yangtze River Delta and the Pearl River Delta in 2019, and uses the research method of fuzzy set qualitative comparative analysis to empirically study the core path and mechanism of multiple complex factors that affect corporate performance. The research results show that manufacturing companies can choose four paths to improve corporate performance (supply chain integration-driven based on internal control, servicing and market dual logic based on internal control-based integration-driven, relying on exploration and innovation-based integration-driven, Relying on the integration-driven type of dual innovation and balance), and found that the core role of supply chain integration and servicing level has become more prominent, becoming a key factor leading to high corporate performance. This research is helpful to identify the influence mechanism of supply chain integration, service level and other factors on corporate performance, and grasp the core of configuration, which has certain reference significance for corporate managers.

An evaluation of the core bacterial communities associated with hypersaline environments in the Qaidam Basin, China

2020 ◽  
Vol 202 (8) ◽  
pp. 2093-2103 ◽  
Author(s):  
Derui Zhu ◽  
Rui Han ◽  
Qifu Long ◽  
Xiang Gao ◽  
Jiangwa Xing ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Qaidam Basin ◽  
Hypersaline Environments ◽  
The Core

scholarly journals A middle Pleistocene paleosol sequence from Dawson Range, Central Yukon Territory

2002 ◽  
Vol 53 (3) ◽  
pp. 313-322 ◽  
Author(s):  
Lionel E. Jackson ◽  
Charles Tarnocai ◽  
Robert J. Mott
Keyword(s):  
Yukon Territory ◽  
Middle Pleistocene ◽  
Mean Annual Temperature ◽  
Sedimentary Sequence ◽  
The Core ◽  
The Mean

AbstractFour paleosols were intersected in a core drilled into the colluvial fill of a largely buried meltwater channel that was last active during the youngest of the pre-Reid glaciation (0.99-0.78 Ma) in the Dawson Range, Yukon Territory. The paleosols are classified as Podzols. The sedimentary sequence and paleosols indicate that at least two middle Pleistocene glacial and interglacial periods are represented in the core. The mean annual temperature exceeded 0° C for thousands of years in the upland environment of the Dawson Range at 61° N during these interglacial periods.

Magnetostratigraphy of the Yili Basin indicates Late Cenozonic activity of the Tianshan Mountain, northwestern China

2021 ◽  
Author(s):  
Liu Xiaoyan ◽  
Yuan Sihua ◽  
Jin Chunsheng ◽  
Bai Xiangdong ◽  
Jiang Jiyi ◽  
...  
Keyword(s):  
Sedimentation Rate ◽  
Time Scale ◽  
Qaidam Basin ◽  
Middle Pleistocene ◽  
Tectonic Deformation ◽  
Tianshan Mountain ◽  
Late Cenozoic ◽  
Tectonic Event ◽  
The Core ◽  
Drilling Core

<div> <p>The Yili basin, sandwiched in the Northern and Southern Tianshan Mountain, is an ideal area to study the eroded histories at the Northern Tianshan Mountain during the late Cenozoic. Massive works have been done on tectonic deformation and uplift in this region. However, due to the lack of biostratigraphic data and effective dating marks, the uplifting time limit of the Tianshan Mountain are still argued by many researchers. In order to constrain the uplift history in the west Tianshan Mountain and provid the late Cenozoic time scale, we carried out a series of studies in the Chinese Yili Basin, fortunately, we acquired a drilling core with a depth of 500 m in the Quarternary depocenter in this basin, which provides the basis for the relevant studies. These results offered basic geological data for protecting against and mitigating earthquake disasters. </p> <p>A magnetic stratigraphic study was carried out on the drilling core, combined with three OSL dating data from a natural section adjacent to the drilling hole, an effective time scale was established. There are three main results as follows: (1)The polarity sequences shows 5 normal and 5 reverse polarity zones which can be readily correlated with the Geomagnetic Polarity Time Scale (GPTS2012), dating the core from 3.11Ma to 12Ka. (2) The B/M boundary of magnetic strata in the 500m core in western Yili basin is located in the core 80m and M/G line is located in the core 400m. (3) The sedimentation rate in the western Yili Basin increased rapidly at two periods, ~1.17 to 1.07Ma and ~2.13 to 1.77Ma. </p> <p>According to the regional reference data, the peak deposition rate in the range of ~ 2.13 to 1.77Ma is closely related to the Xiyu movement in Northwest China, as a corollary, the sedimentation rate should decrease with the end of Xiyu Movement after ~1.77Ma. Another obvious lithofacies change from ~1.17 to 1.07Ma illustrates there should be a tectonic event in the Tian shan region. This Middle Pleistocene uplift can also be evidenced by the age of volcanism in the Qaidam Basin (northeastern Tibetan Plateau), the existence of thick conglomerate deposits surrounding the uplifted plateau, and the increased sedimentation rate of lacustrine deposits in the between ~1.1 and ~0.9Ma ago, followed by the loess and marine records.</p> </div>

Reconstructing Lake History Changes from Zooplankton Subfossil in the Sediment of Wuliangsuhai Lake, China

2011 ◽  
Vol 183-185 ◽  
pp. 710-714
Author(s):  
Zhen Ying Liu ◽  
Ya Wei Li ◽  
Zhao Hui Jin ◽  
Xiao Li Wang
Keyword(s):  
Shallow Lake ◽  
Sediment Samples ◽  
The Core ◽  
Large Shallow Lake ◽  
Key Factor ◽  
Different Depths ◽  
High Predation ◽  
Lake History ◽  
Anthropogenic Pollutant ◽  
High Predation Pressure

The sediment samples of zooplankton subfossil at different depths were collected from a large shallow lake Wuliangsuhai Lake, China, in order to reconstruct lake past changes. The lake began to switch to eutrophication gradually in the middle 1980s, creating a sediment discontinuity layer (about 32.5 cm depth) that can be visually used to separate sediments derived from plankton and macrophyte. Inferences about the timing and trajectory of eutrophication were made using sediment zooplankton subfossil reconstruction. The changes in composition of the zooplankton fragments were rather gradual up the core, whereas the total numbers of fragments show the most marked changes from 32.5 cm to present. Changes in the composition of zooplankton fragments (in 32.5 cm depth) show a gradual shift from a “pelagic community” dominated by B. longirostris, reflecting clearwater conditions with high predation pressure, to a more “benthic” community, dominated by plant associated Chydorids. The results suggest that it is possible to reconstruct past eutrophication trends of the lake by using zooplankton subfossil, and that anthropogenic pollutant loading is the key factor in the eutrophication of Lake Wuliangsuhai.

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