Objective The North China Craton（NCC）is characterized by widespread tectono-thermal events at ca.2.5 Ga,which differs from many other older cratons on Earth,which usually record tectono-thermal events at-2.7 Ga.Ther...Objective The North China Craton（NCC）is characterized by widespread tectono-thermal events at ca.2.5 Ga,which differs from many other older cratons on Earth,which usually record tectono-thermal events at-2.7 Ga.Therefore,the search for early crustal material,especially rocks within the NCC that record the 2.7 Ga event,展开更多
Objective The Great Xing＇an Range is located in the eastern section of Central Asian Orogenic Belt（CAOB）.As a superposed position of multiple tectonic domains,its structural evoIlution has always been a focused iss...Objective The Great Xing＇an Range is located in the eastern section of Central Asian Orogenic Belt（CAOB）.As a superposed position of multiple tectonic domains,its structural evoIlution has always been a focused issue of geological research.展开更多
Objective The North China Craton（NCC）is almost continuously widespread TTGs of 3.8–2.5 Ga,and the intrusive peak appears at^2.53 Ga,indicating that the Neoarchean is the most important period of continental growth ...Objective The North China Craton（NCC）is almost continuously widespread TTGs of 3.8–2.5 Ga,and the intrusive peak appears at^2.53 Ga,indicating that the Neoarchean is the most important period of continental growth in the NCC（Wan Yusheng et al.,2017）.Recently studies reveal that the TTGs were formed during-2.7 Ga and 2.6–2.5 Ga in southern Jilin Province,NE of the NCC（Wang Chaoyang et al.展开更多
Objective The Juhugeng mining area in Qinghai Province of northwest China has attracted wide attention among geologists for it hosts typical coal measure gases.The shale gas reservoirs were reformed by intensive struc...Objective The Juhugeng mining area in Qinghai Province of northwest China has attracted wide attention among geologists for it hosts typical coal measure gases.The shale gas reservoirs were reformed by intensive structural movements during geological periods,展开更多
Objective The Yingyangguan Group is widely exposed in the southwestern segment of boundary belt between Yangtze and Cathaysian blocks and is mainly composed of a suit of lower-grade metamorphic marine volcanoclastic-...Objective The Yingyangguan Group is widely exposed in the southwestern segment of boundary belt between Yangtze and Cathaysian blocks and is mainly composed of a suit of lower-grade metamorphic marine volcanoclastic- sedimentary rocks （Zhou Hanwen et al., 2002）. Its forming age and petrogenesis are critical for better understanding the orogenic process and relationship of the Yangtze and Cathaysian blocks since the Neoproterozoic. However, few zircon U-Pb ages of samples from the Yingyangguan Group have been reported, which are much debated, such as the metamorphic spilite （819±11 Ma）, keratophyre （415.1±2.1 Ma） and ignimbrite （821.3±3.9 Ma） （Tian Yang et al., 2015 and references in）. In this study, we focus on the new discovered Early Yanshannian monzogranite and its mafic enclaves from the Yingyangguan Group, and conducted zircon U-Pb dating and in-situ Hf isotopic analyses to constrain their petrogenesis.展开更多
Objective The lateral extrusion eastward of the Tibetan Plateau leads to the formation of the Sichuan–Yunnan block, which is the most representative active block in the southeastern margin of the Tibetan Plateau, cha...Objective The lateral extrusion eastward of the Tibetan Plateau leads to the formation of the Sichuan–Yunnan block, which is the most representative active block in the southeastern margin of the Tibetan Plateau, characterized by strong and frequent seismicity(Li Ping et al., 1975; Zhang Peizhen et al., 2003; Li Yong et al., 2017). Its eastern boundary is composed of sinistral faults including the Xianshuihe, Xiaojiang faults, etc., and the western展开更多
Objective Material exchange between magma and coal has recently received much attention, with published studies dedicated mainly to intrusion-related geochemical anomalies(An et al., 2017). It is found that magmatism ...Objective Material exchange between magma and coal has recently received much attention, with published studies dedicated mainly to intrusion-related geochemical anomalies(An et al., 2017). It is found that magmatism not only alters the chemical compositions of coal seams, but also brings new minerals to natural coke. Although some studies have related magmatic water to secondary minerals in the natural coke, the mineral formation展开更多
Objective Ginkgoales and Czekanowskiales are important components of Mesozoic flora and were widely distributed in the Northern Hemisphere. They are usually preserved together in the stratum. Their fossils are abunda...Objective Ginkgoales and Czekanowskiales are important components of Mesozoic flora and were widely distributed in the Northern Hemisphere. They are usually preserved together in the stratum. Their fossils are abundant in the Middle Jurassic of Shaanxi Province, but there are no reports on their reproductive organs. Here, we report two male gymnospermous pollen cones from the Middle Jttrassic Yan＇an Formation of the northeast Yulin City, Shaanxi Province, China. The characteristics of the fossils, including those of pollens, have been described in detail. The new specimens were compared with fossils closely similar in morphology, and the taxonomic affinity and systematies were established. The present results offer new fossil materials for the study of taxonomy, evolution, and phytogeography of Ginkgoales and Czekanowskiales.展开更多
Objective Understanding the dynamics of sediment gravity flows is of great importance to correctly interpret their related deposits. The discovery of supercritical sediment gravity flows provides some new viewpoints ...Objective Understanding the dynamics of sediment gravity flows is of great importance to correctly interpret their related deposits. The discovery of supercritical sediment gravity flows provides some new viewpoints for the explanation of controversial sediment gravity flow deposits. However, the dynamics, formation, evolution processes of supercritical sediment gravity flows and their recognition criteria from their associated deposits are still worldwide controversial. The supercritical hyperpycnal flow deposits recognized in the upper part of Early Cretaceous Lingshandao Formation provide a rare opporttmity to understand their sedimentary characteristics. This work is aimed at documenting the typical sedimentary structures associated with the supercritical hyperpycnal flow, and discussing the vertical stacking and its relationship with flow evolution.展开更多
Objective The Mengshan area of the Xinyu City, Jiangxi Province is an important wollastonite production base in China. As early as the 90s of the 20th century, more than ten medium to small-sized wollastonite deposi...Objective The Mengshan area of the Xinyu City, Jiangxi Province is an important wollastonite production base in China. As early as the 90s of the 20th century, more than ten medium to small-sized wollastonite deposits, such as the Yueguangshan and Caofangmiao Deposits were discovered in the outer contact zone of the Mengshan rock mass. After that, no more progress was achieved in wollastonite prospection. In 2016, the project funded by the Geological Prospecting Fund of Jiangxi Province made significant breakthroughs in the ＂General Survey of the Shizhushan Wollastonite Ore in the Yushui District and Zhangmuqiao Wollastonite Ore in Shanggao County, Xinyu City, Jiangxi Province＂ in the Mengshan area. The new discovered Shizhushan Wollastonite Deposit has a scale of 50 million tons and its resources scale far exceeds that of the Seeleys Bay Wollastonite Deposit discovered in Canada.展开更多
Objective The Jilin-Liaoning area has widely spread Meso- and Neoproterozoic sediments and is always a focused area for researching Precambrian geology. Previous study has achieved a series of results about Neoprotero...Objective The Jilin-Liaoning area has widely spread Meso- and Neoproterozoic sediments and is always a focused area for researching Precambrian geology. Previous study has achieved a series of results about Neoproterozoic stratigraphy in this area, but the lack of precise geochronological data and signs of stratigraphic correlation has resulted in the long controversial stratigraphic age and regional correlation. During recent years,展开更多
Objective The North China Craton,bounded by the Paleozoic Central Asian Orogenic Belt on the north and by the Qinling–Dabie–Su–Lu Orogenic Belt on the south,is one of the oldest continental nuclei on Earth as a con...Objective The North China Craton,bounded by the Paleozoic Central Asian Orogenic Belt on the north and by the Qinling–Dabie–Su–Lu Orogenic Belt on the south,is one of the oldest continental nuclei on Earth as a consequence of its preservation of some of the oldest rock records ranging up to ca.3.85 Ga and mineral older than 4.0 Ga（Li et al.,2016,2017）.展开更多
1 Introduction Some Cyprinidae fossils have been reported about 420km east of the fossil site in the same period of Wulan Husentu1 layer,and have been used as an important fossil evidence for a deep understanding of the
Objective Northeast China is located in a cold region with high latitude. In the mid-low mountain areas, the existence of Quaternary glacier as well as its range and nature are always controversial. The glacial paleo...Objective Northeast China is located in a cold region with high latitude. In the mid-low mountain areas, the existence of Quaternary glacier as well as its range and nature are always controversial. The glacial paleogeomorphology of Northeast China had been extensively studied and explored. The results revealed that Quaternary glaciers was developed in the northern part of Great Hinggan Ranges and Changbai Mountains. However, some scholars believed that the development of the Quaternary glaciers in China resulted from tectonic coupling and close relation with the elevation of mountains. In Northeast China, glaciation did not occur in any mid-low mountain areas during the Quaternary except the Changbai Mountains where the elevation is more than 2600 m. The question is whether glaciation occurred in the mid-low mountain areas of Northeast China during the Quaternary？ In order to clarify this question, this paper reports the Quaternary glacial remains of Tala Mountain, which were newly discovered in Ar Horqin Banner, lnner Mongolia and their age dating.展开更多
Dongsha waters are poorly studied for gas hydrates. Previous multi-channel seismic reflection and Chirp sub- bottom profiles show that numerous submarine mounds stand up to 100 m high above the seafloor over the conti...Dongsha waters are poorly studied for gas hydrates. Previous multi-channel seismic reflection and Chirp sub- bottom profiles show that numerous submarine mounds stand up to 100 m high above the seafloor over the continental slope of the SW Dongsha Island in northern margin of the South China Sea （SCS）. These mounds are characterized by hardened seabed, seafloor gas venting and folded structures, which implies the existence of active mud volcanoes. This work aims to confirm this speculation by seafloor sample dredging and to explore the potential of gas hydrates.展开更多
Dr. Shangping Xie (EPRC, Hawaii University, USA), Dr. W. Timothy Liu (J.P.L. California Institute of Technology, USA), Professor Qinyu Liu (Ocean U-niversity of Qingdao, China) and Masami Nonaka (IPRC, Hawaii Universi...Dr. Shangping Xie (EPRC, Hawaii University, USA), Dr. W. Timothy Liu (J.P.L. California Institute of Technology, USA), Professor Qinyu Liu (Ocean U-niversity of Qingdao, China) and Masami Nonaka (IPRC, Hawaii University, USA) discovered a phe-展开更多
The concept of the combinatorial discovery and optimization of new materials, and its background,importance, and application, as well as its current status in the world, are briefly reviewed in this paper.
The research history and new discoveries of the specific characteristics of Yulania Spach were reported, as to the specific characteristics, such as the terminal , axillary and fascicled similar flower buds,sometimes ...The research history and new discoveries of the specific characteristics of Yulania Spach were reported, as to the specific characteristics, such as the terminal , axillary and fascicled similar flower buds,sometimes polycymes; 2-4 flower types of a plant; two spathe-like stipoles of single flower; drape or overlap of tepals, deep split or shallow split on the edge of tepals. The discoveries could provide valuable information for the further studies on the taxonomic system, anthotaxical evolution, phylogenetic relationship and breeding.展开更多
基金supported by the National Science Foundation of China(grants No.41572169 and41202136)China Geological Survey(grant No.12120114021601)the Outlay Research Fund of the Institute of Geology,CAGS(grants No.J1507 and J1301)
文摘Objective The North China Craton（NCC）is characterized by widespread tectono-thermal events at ca.2.5 Ga,which differs from many other older cratons on Earth,which usually record tectono-thermal events at-2.7 Ga.Therefore,the search for early crustal material,especially rocks within the NCC that record the 2.7 Ga event,
基金financially supported by the National Nature Science Foundation of China(grants No.41340024 and 41602209)
文摘Objective The Great Xing＇an Range is located in the eastern section of Central Asian Orogenic Belt（CAOB）.As a superposed position of multiple tectonic domains,its structural evoIlution has always been a focused issue of geological research.
基金supported by the National Science Foundation of China(grant No.41272223)China Geological Survey(grants No.12120114028001,121201004000150017-28 and 121201004000160901-7)Graduate Innovation Fund of Jilin University
文摘Objective The North China Craton（NCC）is almost continuously widespread TTGs of 3.8–2.5 Ga,and the intrusive peak appears at^2.53 Ga,indicating that the Neoarchean is the most important period of continental growth in the NCC（Wan Yusheng et al.,2017）.Recently studies reveal that the TTGs were formed during-2.7 Ga and 2.6–2.5 Ga in southern Jilin Province,NE of the NCC（Wang Chaoyang et al.
基金supported by the National Natural Science Foundation of China(grant No.41572141)
文摘Objective The Juhugeng mining area in Qinghai Province of northwest China has attracted wide attention among geologists for it hosts typical coal measure gases.The shale gas reservoirs were reformed by intensive structural movements during geological periods,
基金financially supported by the China Geological Survey(grants No.12120113063200 and DD20160035-1)
文摘Objective The Yingyangguan Group is widely exposed in the southwestern segment of boundary belt between Yangtze and Cathaysian blocks and is mainly composed of a suit of lower-grade metamorphic marine volcanoclastic- sedimentary rocks （Zhou Hanwen et al., 2002）. Its forming age and petrogenesis are critical for better understanding the orogenic process and relationship of the Yangtze and Cathaysian blocks since the Neoproterozoic. However, few zircon U-Pb ages of samples from the Yingyangguan Group have been reported, which are much debated, such as the metamorphic spilite （819±11 Ma）, keratophyre （415.1±2.1 Ma） and ignimbrite （821.3±3.9 Ma） （Tian Yang et al., 2015 and references in）. In this study, we focus on the new discovered Early Yanshannian monzogranite and its mafic enclaves from the Yingyangguan Group, and conducted zircon U-Pb dating and in-situ Hf isotopic analyses to constrain their petrogenesis.
基金supported by the National Science Foundation of China (grant No. 41472204)
文摘Objective The lateral extrusion eastward of the Tibetan Plateau leads to the formation of the Sichuan–Yunnan block, which is the most representative active block in the southeastern margin of the Tibetan Plateau, characterized by strong and frequent seismicity(Li Ping et al., 1975; Zhang Peizhen et al., 2003; Li Yong et al., 2017). Its eastern boundary is composed of sinistral faults including the Xianshuihe, Xiaojiang faults, etc., and the western
基金financially supported by the National Natural Science Foundation of China (grant No. 41602173)the Anhui University Ph. D Start-up Foundation (grant No. J10113190091)
文摘Objective Material exchange between magma and coal has recently received much attention, with published studies dedicated mainly to intrusion-related geochemical anomalies(An et al., 2017). It is found that magmatism not only alters the chemical compositions of coal seams, but also brings new minerals to natural coke. Although some studies have related magmatic water to secondary minerals in the natural coke, the mineral formation
基金financially supported by the Natural Science Foundation of China (grant No.41402023)
文摘Objective Ginkgoales and Czekanowskiales are important components of Mesozoic flora and were widely distributed in the Northern Hemisphere. They are usually preserved together in the stratum. Their fossils are abundant in the Middle Jurassic of Shaanxi Province, but there are no reports on their reproductive organs. Here, we report two male gymnospermous pollen cones from the Middle Jttrassic Yan＇an Formation of the northeast Yulin City, Shaanxi Province, China. The characteristics of the fossils, including those of pollens, have been described in detail. The new specimens were compared with fossils closely similar in morphology, and the taxonomic affinity and systematies were established. The present results offer new fossil materials for the study of taxonomy, evolution, and phytogeography of Ginkgoales and Czekanowskiales.
基金the National Science Foundation of China (grant No.U1262203)the National Science and Technology Special Grant (grant No.2016ZX05006-007) for their financial support
文摘Objective Understanding the dynamics of sediment gravity flows is of great importance to correctly interpret their related deposits. The discovery of supercritical sediment gravity flows provides some new viewpoints for the explanation of controversial sediment gravity flow deposits. However, the dynamics, formation, evolution processes of supercritical sediment gravity flows and their recognition criteria from their associated deposits are still worldwide controversial. The supercritical hyperpycnal flow deposits recognized in the upper part of Early Cretaceous Lingshandao Formation provide a rare opporttmity to understand their sedimentary characteristics. This work is aimed at documenting the typical sedimentary structures associated with the supercritical hyperpycnal flow, and discussing the vertical stacking and its relationship with flow evolution.
基金jointly funded by the Postdoctoral Research Fund of the Department of Human Resources and Social Security of Jiangxi Province(2016KY12)the Geological Prospecting Fund of Jiangxi Province(20160046)
文摘Objective The Mengshan area of the Xinyu City, Jiangxi Province is an important wollastonite production base in China. As early as the 90s of the 20th century, more than ten medium to small-sized wollastonite deposits, such as the Yueguangshan and Caofangmiao Deposits were discovered in the outer contact zone of the Mengshan rock mass. After that, no more progress was achieved in wollastonite prospection. In 2016, the project funded by the Geological Prospecting Fund of Jiangxi Province made significant breakthroughs in the ＂General Survey of the Shizhushan Wollastonite Ore in the Yushui District and Zhangmuqiao Wollastonite Ore in Shanggao County, Xinyu City, Jiangxi Province＂ in the Mengshan area. The new discovered Shizhushan Wollastonite Deposit has a scale of 50 million tons and its resources scale far exceeds that of the Seeleys Bay Wollastonite Deposit discovered in Canada.
基金supported by the Nature Science Foundation of China(grant No.41472082)China Geological Survey(grant No.121201102000150012)
文摘Objective The Jilin-Liaoning area has widely spread Meso- and Neoproterozoic sediments and is always a focused area for researching Precambrian geology. Previous study has achieved a series of results about Neoproterozoic stratigraphy in this area, but the lack of precise geochronological data and signs of stratigraphic correlation has resulted in the long controversial stratigraphic age and regional correlation. During recent years,
基金financially supported by the National Science Foundation of China(grants No.41430207 and 90914001)
文摘Objective The North China Craton,bounded by the Paleozoic Central Asian Orogenic Belt on the north and by the Qinling–Dabie–Su–Lu Orogenic Belt on the south,is one of the oldest continental nuclei on Earth as a consequence of its preservation of some of the oldest rock records ranging up to ca.3.85 Ga and mineral older than 4.0 Ga（Li et al.,2016,2017）.
基金Supported by the National Natural Science Foundation of China (Grant No. 41272115,41290253)
文摘1 Introduction Some Cyprinidae fossils have been reported about 420km east of the fossil site in the same period of Wulan Husentu1 layer,and have been used as an important fossil evidence for a deep understanding of the
基金supported by the China Geological Survey(grant Nos.DD20160048-04 and DD20179402-01 DD20179402-02)the National Natural Science Foundation of China(grant No.41702032)
文摘Objective Northeast China is located in a cold region with high latitude. In the mid-low mountain areas, the existence of Quaternary glacier as well as its range and nature are always controversial. The glacial paleogeomorphology of Northeast China had been extensively studied and explored. The results revealed that Quaternary glaciers was developed in the northern part of Great Hinggan Ranges and Changbai Mountains. However, some scholars believed that the development of the Quaternary glaciers in China resulted from tectonic coupling and close relation with the elevation of mountains. In Northeast China, glaciation did not occur in any mid-low mountain areas during the Quaternary except the Changbai Mountains where the elevation is more than 2600 m. The question is whether glaciation occurred in the mid-low mountain areas of Northeast China during the Quaternary？ In order to clarify this question, this paper reports the Quaternary glacial remains of Tala Mountain, which were newly discovered in Ar Horqin Banner, lnner Mongolia and their age dating.
基金financially supported by the National Natural Science Foundation of China(grants No.41376062,91328205,41206039)Project of the Tectonic Evolution of China Sea and its adjacent areas(grant No.GZH201100205)+1 种基金Public Science and Technology Research Funds Projects of Ocean(grant No.201405032)sponsored by NSFC and Special Fund for strategic pilot technology,CAS
文摘Dongsha waters are poorly studied for gas hydrates. Previous multi-channel seismic reflection and Chirp sub- bottom profiles show that numerous submarine mounds stand up to 100 m high above the seafloor over the continental slope of the SW Dongsha Island in northern margin of the South China Sea （SCS）. These mounds are characterized by hardened seabed, seafloor gas venting and folded structures, which implies the existence of active mud volcanoes. This work aims to confirm this speculation by seafloor sample dredging and to explore the potential of gas hydrates.
文摘Dr. Shangping Xie (EPRC, Hawaii University, USA), Dr. W. Timothy Liu (J.P.L. California Institute of Technology, USA), Professor Qinyu Liu (Ocean U-niversity of Qingdao, China) and Masami Nonaka (IPRC, Hawaii University, USA) discovered a phe-
文摘The concept of the combinatorial discovery and optimization of new materials, and its background,importance, and application, as well as its current status in the world, are briefly reviewed in this paper.
基金Supported by Project of Doctor Fund of Henan University of Technology(2006BS015)~~
文摘The research history and new discoveries of the specific characteristics of Yulania Spach were reported, as to the specific characteristics, such as the terminal , axillary and fascicled similar flower buds,sometimes polycymes; 2-4 flower types of a plant; two spathe-like stipoles of single flower; drape or overlap of tepals, deep split or shallow split on the edge of tepals. The discoveries could provide valuable information for the further studies on the taxonomic system, anthotaxical evolution, phylogenetic relationship and breeding.
