JOPC
Advanced Search
Subscription
Email Alert
Home
|
About JOPC
|
Editorial Board
|
Before Submission
|
Subscription
|
Download
|
Publication Ethics
|
Editorial Office
|
Chinese
News
Search in CSB
Adv Search
·
Mourn deeply for the former Chief-editor Professor FENG Zengzhao
·
To readers and anthors
more>>
Office online
·
Online Submission
·
Peer Review
·
Scientific Editor
·
Editor Work
·
Editor-in-chief
Journal online
·
Forthcoming Articles
·
Current Issue
·
Next Issue
·
Browse by Year
·
Browse by Section
·
Archive By Volumn
·
Advanced Search
·
Email Alert
·
Links
·
《Petroleum Science》
·
Periodical Press of CUP
·
China University of Petroleum (Beijing)
·
《Journal of China University of Petroleum(Edition of Natural Science)》
·
《ACTA PETROLOGICA SINICA》
·
《Geology in China》
·
《China Geology》
·
《ACTA GEOCHIMICA》
·
《geochimica》
·
《GEOTECTONICA ET METALLOGENIA》
·
China Geoscience Journal Portal
·
《Bulletin of Mineralogy, Petrology and Geochemistry》
JOPC 2016 Vol.18 Number 5
2016, Vol.18 Num.5
Online: 2016-10-01
CENARAL
LITHOFA CIES PALAEODEOGRAPHY AND SEDIMENTOLOGY
PALAEOGRAPHY AND MINERAL RESOURCES
GEOCHEMISTRY AND SEDIMENTARY ENRIROMENTS
PAST AND PRESENT GEOGRAPHIC ENVIRONMENTS AND HUMAN CIVILIZATION
CENARAL
699
Zhu Xiaomin, Li Shunli, Pan Rong, Tan Mingxuan, Chen Hehe, Wang Xingxing, Chen Feng, Zhang Mengyu, Hou Bingjie, Dong Yanlei
Current hot topics and advances of sedimentology:A summary from 32nd IAS Meeting of Sedimentology
The 32nd IAS Meeting of Sedimentology was held in Marrakech, Morocco, from 23 to 25, May 2016. More than 360 sedimentologists from 43 countries and regions participated in this meeting. A review of research indicates that hot issues of this meeting mainly consist of continental sedimentary environment, shallow water deposits and coastal tidal systems, deep water sedimentation and event sedimentation, carbonate and chemical deposition, sedimentary process and basin analysis, diagenesis and hydrocarbon reservoirs. Main progresses of the meeting are listed as follows. Wave resuspension and hyperpycnal flow contribute to rapid progradation of shelf-margin clinoforms. The occurring period of tsunami ranges from 14, ka to 35, ka, and backset-bedding has become the identification feature of the tsunami deposits. Submarine landslides were mostly triggered by submarine earthquake and leakage of gas hydrate;the products of mass-transport-deposits usually consist of headwall scarp, basal shear surface, landslide body and post-mass wasting turbidities. The weathering process of host rock(like basalt)provided silica and Mg-rich alkaline waters, which were suitable for chabazite and dolomite formation. The invertible transformation could occur between the uplift erosion area and the depositional area due to the tectonic influence. Sedimentary topography(source-to-sink system)was controlled by provenance property, sediment supply and transporting or dispersing processes. Variation of accommodation and landform, erosion rate of source area and sediment supply rate were directly linked to tectonic movement. Finally, this article makes a comparison between the development of sedimentology in China and other countries, and discusses the future research fields of sedimentology in China.
2016 Vol. 18 (5): 699-716 [
Abstract
] (
1285
) [
HTML
1KB] [
PDF
1968KB] (
597
)
717
Zhang Lijun, Fan Ruoying
Biological traces towards sustainable development:Outline of the Fourth International Congress on Ichnology
The Fourth International Congress on Ichnology was held at the UNESCO Naturtejo Global Geopark,Idanha-a-Nova,Portugal during May 6-9,2016. Based on the oral presentations,posters,abstracts and field study,the palaeobiology of trace fossils,and trace fossils and sedimentary environment analysis are the current topic research areas. The application of new conceptual tools and methods,especially the multidisciplinary ideas will greatly promote the development of ichnology. Comparison shows that ichnologists in China rarely focus on ichnotaxonomy,continental trace fossils and neoichnology. The authors suggest that three breakthrough directions possibly come from more attentions paid to trace fossils in biotic and environmental events,neoichnology,and reptile tracks and avialan footprints.
2016 Vol. 18 (5): 717-720 [
Abstract
] (
807
) [
HTML
1KB] [
PDF
374KB] (
294
)
LITHOFA CIES PALAEODEOGRAPHY AND SEDIMENTOLOGY
721
Zhong Jianhua, Ni Liangtian, Cao Mengchun, Chen Xin, Zhang Danfeng, Sun Ningliang, Hao Bing, Liu Chuang, Shao Zhufu, Niu Yongbin
Discovery and characteristics of coated gravels and coated conglomerates from the Ordovician karst cave and sediment in northern margin of Tarim Basin
Coated gravels and coated conglomerates, a specific type of sediment from karst caves and palaeokarsts,were found in the Ordovician in northern margin of Tarim Basin. These coated gravels and coated conglomerates,not been documented previously,are characterized by oolith- or oncolite-like textures,
i.e
.,a core and coat around the core. The core is divided into four types:(1)limestone gravel identical to the country rock of the karst cave;(2)core composed of sandstone;(3)composite core of conglomerates and(4)core comprised by palaeotravertine clasts. The coat is also divided into four types:(1)coat with cycles;(2)granular coat;(3)homogeneous coat and(4)composite coat comprised by granular coats and cycle-like coats. Coated gravels and coated conglomerates are typical products of karst caves and palaeokarsts, which can be served as markers of the presence of karsts and karst caves. Furthermore,the inherent storage capability in coated gravels and coated conglomerates make them effective hydrocarbon reservoirs,and thus a target for oil and gas exploration and development.
2016 Vol. 18 (5): 721-730 [
Abstract
] (
675
) [
HTML
1KB] [
PDF
2029KB] (
390
)
731
Song Qian, Ma Qing, Dong Xujiang, Liu Ying, Gao Xiang, Cao Kang
Sequence stratigraphic framework and sedimentary evolution of the Ordovician in northern Tarim Basin
According to the theory and approach of sequence stratigraphy and sedimentary petrology,based on thorough analysis of the data of cores,thin sections,well logging in the three tectonic units of Lunnan,Halahatang,Yingmaili in northern Tarim Basin,combining with the previous study on main tectonic events and sea level changes,the sequence stratigraphic framework was estabished and the sedimentary characteristics and evolution were described. According to the regional unconformity surface,two 2nd-order sequences,SSQ1 and SSQ2,were identified. SSQ1 included the Lower and Middle Ordovician,SSQ2 included the Middle and Upper Ordovician. And then,on the basis of lithologic characteristics and lithofacies converting surfaces,eleven 3rd-order sequences(OSQ1-OSQ11)were identified. Further,according to the main marine flooding surfaces,the sequences were divided into transgressive system tract(TST)and highstand system tract(HST). The shallow-sea platform is the main sedimentary environment of the Ordovician in northern Tarim Basin and it experienced the evolutionary process of restricted platform,open platform and platform edge from the Early Ordovician to the Late Ordovician successively. Eventually,as detrital material of terrigenous origin filled in,the platform sedimentary environment in northern Tarim Basin was destroyed and developed into mixed platform.
2016 Vol. 18 (5): 731-742 [
Abstract
] (
751
) [
HTML
1KB] [
PDF
4617KB] (
407
)
743
Sun Yongchao, Liu Jianbo
Origin of fine-grained laminated carbonate rocks:A case study of the Lower Ordovician at Houtan section in Xishui County, Guizhou Province
Lamination has been viewed as indicative of a low-energy environment,and commonly,relatively deep water.This viewpoint has undergone radical change after recent studies showed that lamination can also be deposited in a high-energy environment. On storm-influenced areas,mud can be transported in bedload as floc aggregate grains,deposition from these turbulent flows produces laminated mud current ripples. Abundant and diverse storm sedimentary structures were found in laminations at Houtan section in Xishui County of Guizhou Province,included storm-erosional structures and gutter casts.Based on the fine sedimentary research both in field and in laboratory,5 laminated types were identified:Thick parallel lamination, unidirectional cross-lamination, thin parallel lamination, thick wavy lamination and thick horizontal lamination. By EDS mapping,three elements of Al, Si and Mg were analyzed in light and dark lamination. These elements are uniformly distributed in light and dark lamination, with a bit more content in dark lamination due to the more clay minerals in it. Kelvin-Helmholtz shear instabilities have been invoked to explain the alternating light-dark lamination.Three types of storm deposit have been recognized. From type Ⅰ to type Ⅲ,storm influence decreased gradually.
2016 Vol. 18 (5): 743-758 [
Abstract
] (
582
) [
HTML
1KB] [
PDF
3149KB] (
298
)
759
Han Yuanhong, Hao Lewei, Wang Qi, Lu Jianlin, Zhu Jianhui, Luo Houyong
Sedimentary characteristics and types of beach bars deposited in modern times in nearshore of Qinghai Lake
Beach bars are important sediment system that can develop into subtle reservoirs. They have become target region for oil-gas exploration(especially in the middle to late periods)in continental faulted basins. The studies of beach bars deposited in modern times could provide the basis for the studies of subtle beach bar reservoirs. Fieldworks for beach bars were taken,trenches and outcrops of beach bars were observed,and sediments of beach bars were analyzed in Qinghai Lake. According to sediment sources and geographic locations,beach bars were recognized into five types in the study area,which were beach bars in abandoned delta front area,beach bars in delta flank area,beach bars in bend shoreline area,beach bars in wide offshore area and beach bars near alluvial fan area. Sedimentary characteristics of those beach bars were studied by cross-section analysis. It was found that there were substantial differences between different types of beach bars. It was summarized overall that sediments of beach bars were coarse,medium sorted and rounded. The main bedding structures of the beach bars were parallel bedding,cross bedding and flushing cross-bedding in Qinghai Lake. Beach bars developed in here have a reverse rhythm in ascending order. Moreover,sedimentary characteristics of microfacies in one typical beach bar were contrastively analyzed in southern shore of Qinghai Lake. It is suggested that the bar-center microfacies has the most coarse size, the most thick stratum,the lowest clay content and the best-sorted grains in the same sedimentary cycle,which make it is most favorable for subtle reservoirs.
2016 Vol. 18 (5): 759-768 [
Abstract
] (
894
) [
HTML
1KB] [
PDF
1569KB] (
353
)
769
Zhao Wei, Qiu Longwei, Jiang Zaixing
Quantitative recovery of solid-fluid interaction and prediction of cause of secondary pores in beach and bar reservoirs in the upper part of Member 4 of Shahejie Formation of Paleogene, Dongying sag
There are large scale of typical lacustrine beach and bar sandbodies of the upper part of the Member 4 of Shahejie Formation of Paleogene in Dongying sag and a great amount of oil and gas has been found in this area. Based on the analysis of cements and secondary pores,which are the products of the solid-fluid interaction,we can quantitatively or semi-quantitatively recover the process of the liquid changing and its effects on the porosity of reservoirs combing with the evolution of the basin and the structure development stages. Finally,in accordance with the fluid sources and time of duration, the whole evolution process can be divided into five stages,which are the reaction stage of initial liquid,the reaction stage of liquid from surrounding rocks,the reaction stage of liquid from outer sources,the reaction stage of liquid with hydrocarbon migration and the reaction stage after hydrocarbon accumulation. According to the formation mechanism of secondary pores and the zoning character of beach and bar sand bodies,we can indentify the secondary pore zones as the zone dominated by the acid fluids in gravelly beach and bar along the shore line,the zone effected commonly by the acid and alkaline fluids in the near shore bar sand bodies,and the zone dominated by the alkaline fluids in the bar far from shore and in the central resonance belt,and the speculation of secondary pores in the plane also been done in this article.
2016 Vol. 18 (5): 769-784 [
Abstract
] (
776
) [
HTML
1KB] [
PDF
3327KB] (
240
)
785
Ding Lin, Du Jiayuan, Luo Ming, Li Xiaoping, Yan Hui, Zheng Jia
Analysis of depositional genesis of K22 shelf sand ridges in the Neogene Zhujiang Formation in Huizhou sag,Pearl River Mouth Basin
Based on external characteristics,the inner structure and the plain distribution of seismic reflection,as well as the eustatic sea level changes,the sedimentary genesis of NE-trending banded K22 shelf sand ridges of the Zhujiang Formation in Huizhou sag,Pearl River Mouth River Basin, was studied with the sequence stratigraphy theory and method. The results show that the K22 shelf sand ridges were considered to be redeposited products primarily formed during the forced regression. The K22 shelf sand ridges were preferentially present on high paleo-tectonic locations with the former delta as provenance. The diverse depositional hydro-dynamics mainly included tide currents and wave effects,besides,coastal currents also contribute to the shape of the K22 shelf sand ridges. The sand ridges were preserved benefiting from the subsequent fast transgression,which were then wrapped in the marine mud and would be available to form lithological traps.
2016 Vol. 18 (5): 785-798 [
Abstract
] (
615
) [
HTML
1KB] [
PDF
3491KB] (
572
)
799
Zhang Banghua, Tian Hongshui, Zhu Jiewang
Records of the Pleistocene seismic events in Tancheng Maipo,Shandong Province
Tancheng Maipo is named as a typical site of the seismic active fault,in which the most eye-catching sign is that the purple-gray Lower Cretaceous of the east-wall thrust up to the red-brown Quaternary of the west-wall of the second trunk fault(F
2
)of Tanlu Fault Zone,and the boundary is very clear. The field investigation and the test analysis showed that some earthquake-induced soft sediment deformation structures developed in the Quaternary Yuquan Formation of Tancheng Maipo,including liquefied sand flow pipes,liquefied sand veins,seismic fissure-filling structures,syn-sedimentary faults and other deformation, which were seismic event records. According to the OSL analysis of sandy clay in the soft sediment deformation structures,it is affirmed that the seismic events recorded by these soft sediment deformation structures should belong to strong tectonic seismic activities of the second trunk fault F
2
during the late stage of the Mid-Pleistocene in Tanlu Fault Zone. These seismic event records not only provide new data for new tectonic movements and seismic activities in the Tanlu Fault Zone,but also enrich geoscience connotations of the seismic active fault site.
2016 Vol. 18 (5): 799-808 [
Abstract
] (
807
) [
HTML
1KB] [
PDF
1421KB] (
239
)
809
Liu Jinlong, Li Shengli, Liang Xingru, Huang Jie, Liang Guanzhong, Yu Renjiang, Cao Bin, Lü Junping
Provenance analysis of the lower part of Member 1 of Paleogene Shahejie Formation in Lixian Slope,Central Hebei Depression
Based on the testing data,the provenance was determined according to the palaeodrainage pattern and palaeomorphology,clastic components,lithic fragment types,heavy mineral assemblages and ZTR index and seismic profile features. The results show that the sediments of the lower part of Member 1 of Paleogene Shahejie Formation in Lixian Slope mainly derived from the southwestern and northern provenances. The southwestern provenance mainly located in the Taihangshan uplift,whose sediments were carried by the ancient Dashahe river through the southern slope,and the ancient Tanghe river cross Gaoyang low uplift. The northern provenance mainly located in the Niutuozhen low uplift. The southwestern provenance was dominant while the northern one was minor. Xiliu area was a convergence region of both procenances.
2016 Vol. 18 (5): 809-818 [
Abstract
] (
548
) [
HTML
1KB] [
PDF
3792KB] (
276
)
819
Chen Lei, Qi Yong’an, Yang Wentao, Wang Haiquan
Sedimentary facies and palaeogeographic characteristics of the Miocene coal-bearing basin in Xam Nua area, Laos
Based on data analysis and statistics of a large number of wells,utilizing theories and methods of stratigraphy,sedimentology and lithofacies palaeogeography,thirteen rock types,five sendimentary facies and two depositional systems were recognized in the Neogene Miocene coal-bearing basin in Xam Nua area,Laos. The lithofacies palaeogeographic map was drawn by the single factor analysis and multifactor comprehensive mapping method. The lithofacies palaeogeographic features can be summarized as follows: the steep slope belt was located in southwestern margin of the basin, where the alluvial fan-fan delta-lacustrine system was developed; the gentle slope belt was located in northeastern part of the basin where the braided river delta-lacustrine system was developed; the provenance areas were located in western margin of the basin and the Triassic old land in the northeast of the basin; the water flowed from the southwest and the northeast to the central basin; the largest sedimentary thickness occurred at the central basin.
2016 Vol. 18 (5): 819-832 [
Abstract
] (
796
) [
HTML
1KB] [
PDF
3404KB] (
313
)
PALAEOGRAPHY AND MINERAL RESOURCES
833
Chen Fenxiong, Nie Fengjun, Zhang Chengyong, Zhang Zhanfeng
Sedimentary facies of the Lower Jurassic Sangonghe Formation and its relationship with uranium mineralization in Mengqiguer area of Yili Basin, Xinjiang
Mengqiguer deposit is a large sandstone type uranium deposit discovered in recent years in Yili Basin of Xinjiang. Baesd on the lithology,sedimentary structures,sedimentary sequence,outcrop description and profile comparison,we explained the conditions and mechanism of uranium mineralization of the Lower Jurassic Sangonghe Formation in the study area. It is suggested that the fan delta front facies is the main type of sedimentary facies,including underwater distributary channel,distributary interchannel,underwater crevasse splay
etc.
,while the river mouth bar is not developed. The influence of sedimentary microfacies on uranium mineralization in the study area is mainly manifested in four aspects:(1)The sand body connectivity provided the spale for ore-forming fluid migration. (2)The underwater distributary channel sand is the main factor controlling the oxidation zone. (3)The sand body variation caused by changes of sedimentary microfacies made the ore body wider,thicker and uranium grade increase. (4)The mudstone skylight caused by underwater crevasse splay is one of the key factors in crossflow forming.
2016 Vol. 18 (5): 833-842 [
Abstract
] (
592
) [
HTML
1KB] [
PDF
1765KB] (
234
)
843
Zhao Difei, Guo Yinghai, Yang Yujuan, Wang Shouyu, Mao Xiaoxiao, Li Mi
Shale reservoir diagenesis and its impacts on pores of the Lower Silurian Longmaxi Formation in southeastern Chongqing
Taking shale samples of the Lower Silurian Longmaxi Formation from Qijiang,Nanchuan and Fuling Areas as an example,the mineral compositions,organic characteristics,pore characteristics and reservoir diagenesis were studied by XRD,mercury intrusion,field emission scanning electron microscopy,TOC test,
R
O
test and low temperature nitrogen adsorption,
etc
. The results show that the reservoir diagenesis of the Lower Silurian Longmaxi Formation includes mechanical compaction,chemical compaction,dissolution,metasomatism,regmagenesis,mineral transformation,
etc.
; the diagenetic phase lies between late diagenesis and low-grade metamorphism; reservoir diagenesis show great impaction on porosity,permeability,formation mechanism,pore size distribution,heterogeneity and morphological characteristics. Mechanical/chemical compaction,dissolution,the evolution of organic matter and mineral transformation during the process had great influence on pores’ development and the reservoir diagenesis were divided into two types as constructive diagenesis(dissolution,
etc.
) and destructive diagenesis(compaction,
etc
.) by matching the process of reservoir diagenesis with the development of pores.
2016 Vol. 18 (5): 843-856 [
Abstract
] (
980
) [
HTML
1KB] [
PDF
1894KB] (
429
)
857
Zha Yuming, Wu Xinsong, Yu Da
Relationship between total organic carbon content and sedimentation rate of the Upper Cretaceous source rocks in Well CCSD-SK-I in Songliao Basin
Compared with study in marine basins,study on the relationship between total organic carbon (TOC) content and sedimentation rate(SR)in continental lacustrine sediments is still in exploration phase,and the controlling mechanism of sedimentation on TOC especially needs intensive study. In this paper,astronomical cycles of the Upper Cretaceous in the southern borehole of Well CCSD-SK-1 were firstly identified with the cycle stratigraphy method; and then SR and the corresponding TOC of each window was calculated by moving-window spectral analysis method. Taking the Pr/Ph ratio as a redox condition index and
δ
13
C of the ostracod shell as a paleo-productivity index,the relationship of SR and TOC in different environments and different paleo-productivity conditions in detail was discussed. Analyses show that TOC is mainly controlled by palaeo-productivity while the influence of SR is very little; in a high palaeo-productivity environment the TOC value is larger than 1% and less than 1% in contrast. But under the oxidation and low palaeo-productivity conditions,the TOC value tends to increase with SR when SR is less than 11,cm/ka and then decreases in a higher SR background.
2016 Vol. 18 (5): 857-864 [
Abstract
] (
878
) [
HTML
1KB] [
PDF
973KB] (
336
)
GEOCHEMISTRY AND SEDIMENTARY ENRIROMENTS
865
Xu Chuanqi, Liao Fuqiang, Jia Yulian, Huang Siyuan, Lian Licong, Ling Chaohao, Long Jin
Element geochemical characteristics of the reticulate red clay in southern China and its significance for the formation proccess of reticulated mottles
Reticulate red clay in southern China is a kind of special stratum that formed in a monsoon climate condition,which is of great significance to reconstruct the Quaternary climate environment. For a long time,there is a lack of adequate understanding of physical and chemical characteristics of the formation process of reticulated mottles. Three sections of reticulate red clay,which were located in the Jiujiang and Pengze of Jiangxi Province, and Yueyang of Hunan Province, were studied, and the red matrix and the white reticulated mottles were separated and the geochemical elements,free iron content and so on were analysed. The results show that:(1)In the white reticulated mottles, Fe,Mn,Th,Ga,Cu,Zn,Co,Ni,Cr,V elements are outstanding leaching,while Zr,SiO
2
,Hf and light rare earth elements are obvious enriched,and the content of free iron are low; in the red matrix, they are reversed. (2)Fe
2+
content is higher in the white reticulate,while lower in the matrix,which indicates white reticulate tend to be developed in a reductive environment and matrix tend to be developed in an oxidized environment. The difference of oxidation reduction between white reticulated mottles and red matrix is supposed to be the reason why Fe,Mn,Co,Ni,Cr,V,Zn,Th,Ga,Cu are leaching in the white reticulated mottles and enriched in the matrix, which cause Zr,SiO
2
and light rare earth elements relative enriched in the white reticulated mottles and “dilution” in the red matrix.
2016 Vol. 18 (5): 865-878 [
Abstract
] (
850
) [
HTML
1KB] [
PDF
1598KB] (
298
)
PAST AND PRESENT GEOGRAPHIC ENVIRONMENTS AND HUMAN CIVILIZATION
879
Zheng Libo, Hao Xiudong, Zhuo Bin, Liu Yunlong, Wang Xiaolong, Zhu Lixin, Yu Xinbo, Zhang Yongjiang
Holocene palaeoenvironment evolution and human activity of the Hemudu-Tianluoshan Sites in Yuyao of Zhejiang Province
Micropaleontological record of the two boreholes(HMD1501 and HMD502)from Hemudu-Tianluoshan Sites in Yuyao of Zhejiang Province,reveals a detailed vegetation history,paleo-vegetation evolutions,palaeoclimate change,fluctuating sea level and human activity in the study area during the Holocene.Palynological results(pollen,spores,dinoflagellate,freshwater algae and foraminifer linings)suggest that: (1)Evergreen coniferous and broadleaved mixed forest developed during the Early Holocene(corresponding to the lower of Zhenhai Formation),the climate was warm and humid,and the study area was belong to a transgression stage. (2)Evergreen coniferous and broadleaved mixed forest were still developed during the Middle Holocene(corresponding to the middle of Zhenhai Formation),the climate changed into moderate and humid,and the transgression continued. (3)Due to human activity,coniferous and broadleaved mixed forest-grassland developed during the Late Holocene(corresponding to the upper of Zhenhai Formation),the climate changed into cold and dry,however,the study area began to enter a regression stage. (4)Human activities began to strengthen,and high percentage Poaceae pollen(≥35,μm)indicates rice culture activity presented at Hemudu-Tianluoshan Sites during the
ca
.7235-3327 cal.yr B.P..
2016 Vol. 18 (5): 879-894 [
Abstract
] (
686
) [
HTML
1KB] [
PDF
1242KB] (
489
)
895
Jiang Jiaqi, Mo Duowen, Lü Jianqing, Liao Yinan, Lu Peng, Ren Xiaolin
Holocene geomorphic evolution of Taiyuan Basin in Shanxi Province and its influence on ancient human settlement distribution
Human-environment interreaction is an important research subject of modern geography,and geomorphic prcesses is one key environmental factor of ancient culture evolution. Based on field investigation,optical dating,and GIS analysis,we try to discuss the evolution of the Holocene geomorphic evolution,human settlement distribution and the relationship between them in Taiyuan Basin, Shanxi Province. The results indicate that from Yangshao Period to Xia and Shang Period,the inside plain of Taiyuan Basin was full of rivers and lakes,which is not suitable for human living. Thus,archaeological sites were distributed on the loess plateau,which annularly spreaded around the basin. During the Late Pleistocene,abundance sediments is doposited via alluvial processes at the edge of the basin,developed some higher topographical area at the basin edge. From the Late Pleistocene to Early Holocene,due to intense tectonic activity and humid climate,the edge area of the basin developed into loess hill and loess terrace. During the Early Longshan Period,the edge of plain of eastern basin also developed into less higher loess terrace,which is over flood level and suitable for human living. Meanwhile,at the western part of the basin,just like Qingxu-Wenshui area,also began to develop into low terrace. During the Late Longshan Period,due to aggradation of river in the basin,flood level was rising,which could affect the edge of plain,and human went back to the higher loess terrace. During the Xia and Shang Period,human at Qingxu-Wenshui area left the low terrace. After 3 ka BP,because of the cut of Fen River in Lingshi uplift,the edge area and plain area of Taiyuan Basin were cut in different degrees,human settlements began to expand to plain area. The ancient human settlement distribution of Taiyuan basin is mainly controlled by geomorphic evolution during the Holocene.
2016 Vol. 18 (5): 895-904 [
Abstract
] (
529
) [
HTML
1KB] [
PDF
1320KB] (
323
)
