Guochun Zhao 赵国春

Guochun Zhao 赵国春
The University of Hong Kong | HKU · Department of Earth Sciences

PhD

About

620
Publications
169,321
Reads
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53,589
Citations
Citations since 2016
165 Research Items
30344 Citations
201620172018201920202021202201,0002,0003,0004,0005,000
201620172018201920202021202201,0002,0003,0004,0005,000
201620172018201920202021202201,0002,0003,0004,0005,000
201620172018201920202021202201,0002,0003,0004,0005,000
Additional affiliations
July 2019 - present
The University of Hong Kong
Position
  • Chair
July 2013 - June 2019
The University of Hong Kong
Position
  • Professor (Full)
July 2007 - June 2013
The University of Hong Kong
Position
  • Professor (Associate)
Education
July 1996 - August 2000
Curtin University
Field of study
  • Precambrian Geology
September 1985 - July 1988
Changchun University of Science and Technology
Field of study
  • Metamorphic Petrology
September 1981 - July 1985
Changchun College of Geology
Field of study
  • Geology

Publications

Publications (620)
Article
Final closure of the Palaeo-Asian Ocean signifies the ultimate amalgamation of the North China, Tarim, Mongolia, Songliao, Xilinhot and other Central Asian blocks, and therefore, is critical in reconstructing the configuration of the Pangea supercontinent during the late Palaeozoic to early Mesozoic. However, the final closure time remains contenti...
Article
The Alxa, Quanji, and Dunhuang blocks are microblocks that link the North China craton (NCC) and the Tarim craton (TC). Their paleogeographic affinities during the late Archean–early Paleoproterozoic remain poorly constrained due to a paucity of reliable paleomagnetic data and less exposed Archean basement, especially in the Alxa Block. This study...
Article
Full-text available
Adakites with continental origin have K-rich compositions distinctive from the sodic, subduction-related adakites and are generally considered as partial melting products of thickened mafic lower crust at high pressure conditions (above 1.5 GPa; >50 km depth). In order to compare the geochemical differences and to constrain their source composition...
Article
The Tarim Craton has been considered a part of the Columbia supercontinent. However, the paleogeographic location of the Tarim Craton remains ambiguous or has not been considered in the reconstruction model. This problem is partly due to the dispute over the collisional time between northern Tarim and major Columbia blocks. The Xingditage Group in...
Article
Full-text available
Mixing of low δ⁷Li sediment components (δ⁷Li(‰) = 1000 × [(⁷Li/⁶Li)sample/(⁷Li /⁶Li)L-SVEC − 1]) with high δ⁷Li altered oceanic crusts can explain the MORB-like Li isotopic signature of arc lavas. However, marine sediments with low δ⁷Li values have rarely been reported. The metasomatism of metasedimentary rocks in mélange zones may induce large Li...
Article
How the Neotethyan Ocean evolved and extended southwards into Southeast Asia remains controversial. The paleographical correlation between India and the SE Asian blocks and/or terranes before the opening of the Neotethys and the initial opening time of the Neotethys is still unknown. The lack of this knowledge hampers our further understanding of t...
Article
Full-text available
Long‐standing debates exist over the mechanism of continental lithospheric extension and, more specifically, over the strain distribution across the lithosphere in intraplate settings. The Cretaceous extensional system in South China extends up to ∼800 km inboard of the Paleo‐Pacific convergent margin and enables investigation of the mechanism(s) o...
Article
Full-text available
The debate on the role of vertical versus horizontal tectonism in Archean cratons is intimately linked to the initiation of plate tectonics. The dome-and-keel architecture has been considered as a consequence of vertical tectonism. Although such a structural pattern is documented in some Mesoarchean and older cratons, such as the Kaapvaal and Pilba...
Article
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Post-collisional magmatism carries important information for understanding when and how an ancient continental collisional orogen unrooted and collapsed. However, the post-collisional magmatic response to the final collapse of the Trans-North China Orogen, one of the 2.1–1.8 Ga collisional orogens that formed in coincidence with the assembly of the...
Article
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The Jianping Complex (JPC), located at the northwestern margin of the Eastern Block in the North China Craton (NCC), is one of the high-grade complexes that subjected to granulite facies metamorphism. It has been suggested that the JPC at least experienced two phases of Precambrian metamorphism. This study focuses on the late Neoarchean to early Pa...
Article
South China, India, and their derivative blocks preserve many similar magmatic and sedimentary records related to the tectonic transition from Rodinia to Gondwana. They provide crucial insights into not only the paleogeographic correlation between them but also the geodynamic mechanism for such a transition. Our new results, combined with published...
Article
Full-text available
Multiple arc systems were developed in response to Neoproterozoic to Mesozoic consumption of the Paleo-Asian Ocean and their magmatic evolution is crucial for understanding the arc-arc amalgamation in the Central Asian Orogenic Belt. Here, we report whole-rock geochemical data as well as simultaneous in situ zircon U-Pb and Lu-Hf isotope results fo...
Article
During Carboniferous time, tremendous juvenile arc crust was formed in the southern Central Asian Orogenic Belt (CAOB), although its origin remains unclear. Herein, we presented zircon U-Pb-Hf and whole-rock geochemical and Sr-Nd isotopic data for a suite of volcanic and pyroclastic rocks from the Khan-Bogd area in southern Mongolia. These Carbonif...
Article
The Chengde Complex is located in the northern margin of the Trans-North China Orogen (TNCO) of the North China Craton (NCC), and consists mainly of tonalitic-trondhjemitic-granodioritic (TTG) gneisses, garnet-bearing amphibolites and granulites. Mafic granulites are widely distributed as enclaves or boudins within the Chengde Complex. Three repres...
Article
Global Paleoproterozoic orogenic evolution can provide important constraints on the Columbia (Nuna) supercontinent assembly. Zircon U-Pb chronology studies on the northern Tarim reveal that a paleoproterozoic tectono-thermal event was developed, which is related to the assembly of the Columbia supercontinent. However, limited metamorphic investigat...
Article
Syn-tectonic quartz veins are widely present in low- to medium-grade metapelitic belts, however, dating these veins is challenging due to the lack of suitable target minerals for most geochronological methods. Andalusite is a common K-poor aluminosilicate mineral in these quartz veins. In this study, we demonstrate the feasibility of dating fluid i...
Article
Full-text available
The Mesozoic gold deposits in the North China Craton (NCC) were hosted by the Precambrian basement and Mesozoic intrusions. Thus, most researchers consider that these gold deposits were genetically linked to the Mesozoic intrusions. However, we suggest that a metamorphic devolatilization model provides an alternative based on a combined Fe and in-s...
Article
Neoproterozoic mafic magmatic rocks are widely distributed in the Jiangnan Orogenic Belt. Understanding the petrogenesis and tectonic settings of these mafic rocks has significant implications for the regional tectonic evolution and the assembly and breakup of supercontinent Rodinia. In this research, two Neoproterozoic diabase samples (Baotan and...
Article
The Trans-North China Orogen (TNCO) is suggested to form under a transition from subduction to collision from 2500 Ma to ∼ 1850 Ma, and the Taihua TTG gneiss in the Xiong’ershan district is thought to have formed in an Andean-type continental arc setting or island arc setting during this geological event. However, to date, the geochemical record of...
Article
Full-text available
Mesozoic mantle-derived potassic magmatic rocks in the Trans-North China Orogen (TNCO) are important for constraining tectonic evolution. However, potassic intermediate plutons in this orogen are rarely reported in literature, despite the significance of such a potassic magmatic event being well understood. Here, we describe the petrography of the...
Article
Full-text available
Plate tectonic regime drives the recycle and exchange of elements and energy between lithosphere and Earth surface, therefore sustaining a habitable Planet Earth, but Earth was not born with Plate tectonics. The evolution of plate tectonics is controlled by ambient mantle temperature and sediments in subduction channel. Plate tectonic regime initia...
Article
Understanding the onset timing of crustal thickening is fundamental to correctly interpreting the geodynamic evolution of orogenic events, but it is still controversial in the Trans-North China Orogen, North China Craton. Here, we investigate a suite of high-grade rocks from the Lüliang Complex by integrating zircon mineragraphy, mineral inclusion,...
Article
The late Paleoproterozoic metamorphic evolution of the North China Craton (NCC) has been a controversial issue, and bears significant implications for the final cratonization of the NCC. The Jianping Complex (JPC) is located at the boundary between the Paleoproterozoic Trans-North China Orogen and the Eastern Block, and thus is an ideal site for st...
Article
The occurrence of Triassic high-pressure eclogite- and high-temperature granulite-facies metamorphism in the Badu complex contrasts with regional greenschist-to amphibolite-facies metamorphism in most of South China, hence calling for unraveling related structural and geodynamic processes within a regional intraplate-orogenic setting. We analyzed t...
Article
There are various explanations for how the Earth’s continents form, develop, and change but challenges remain in fully understanding the driving forces behind plate tectonics on our planet.
Article
Full-text available
Constraining the positions of, and interrelationships between, Earth’s major continental blocks has played a major role in validating the concept of the supercontinent cycle. Minor continental fragments can provide additional key constraints on modes of supercontinent assembly and dispersal. The Tarim craton has been placed both at the core of Rodi...
Article
Full-text available
Amuria formed in the late Paleozoic through amalgamation of the Mongolia and Songliao-Jiamusi blocks in the eastern Central Asian Orogenic Belt (CAOB). The exact timing of the assembly is critical towards unravelling the Phanerozoic evolution of the Paleo-Asian Ocean (PAO) and assembly of the Asian blocks in Pangea. Here, we report the first Permo-...
Article
Zhangguangcailing Orogen constitutes a significant part of the Eastern Asian Continental margin. Its evolution was constrained by the oceanic consumption processes between the Jiamusi and Songliao blocks during late Paleozoic and Mesozoic time, resulted from the closure of the Paleo-Asian Ocean and subsequent Paleo-Pacific Ocean subduction. Conside...
Article
The Neoproterozoic Jiangnan accretionary orogenic belt recorded the accretion and collision of the Yangtze and Cathaysia blocks to form a stablized South China Block, but related geometry and kinematics is poorly constrained, leading to largely varied tectonic models. Here, we present detailed field investigation and kinematic analysis of the pluto...
Article
Full-text available
The continental crust is unique to the Earth in the solar system, and controversies remain regarding its origin, accretion and reworking of continents. The plate tectonics theory has been significantly challenged in explaining the origin of Archean (especially pre-3.0 Ga) continents as they rarely preserve hallmarks of plate tectonics. In contrast,...
Article
The closure time of the Karamaili Ocean is the key to understand the accretionary history of the East Junggar at the southern Central Asian Orogenic Belt in the Paleozoic. In this study, we report geochronology, whole-rock elemental and Sr-Nd isotopic data and zircon Lu-Hf isotopic data of four Late Carboniferous to Early Permian I- and A-type gran...
Article
Full-text available
Dating the closure of the Paleo-Asian Ocean (PAO) is critical to our understanding of East Asian tectonics during the formation of Pangea, yet existing estimates differ by up to 130 Myr (380 Ma to 250 Ma). We report two robust paleomagnetic results from 320-280 Ma volcanic strata in the South Mongolia-Xing’an Belt. Stable characteristic remanences...
Article
Considerable controversy concerns the consumption and closure processes of the North and South Altyn Oceans resulting in the formation of the North Altyn Tagh subduction-accretion belt and the South Altyn Tagh subduction-collision belt in the Altyn Tagh orogen in southeastern Tarim. This study focused on U–Pb ages and Hf isotopes of detrital zircon...
Article
Full-text available
Initiation of Mariana-type oceanic subduction zones requires rheologically strong oceanic lithosphere, which developed through secular cooling of Earth’s mantle. Here, we report a 518 Ma Mariana-type subduction initiation ophiolite from northern Tibet, which, along with compilation of similar ophiolites through Earth history, argues for the establi...
Article
The Early Paleozoic paleogeographic locations of the Tibetan terranes in Gondwana remain poorly constrained. This study reports petrology, zircon LA-ICP-MS U-Pb ages, whole-rock major and trace element compositions, and Sr-Nd-Hf isotopic data for the gneissic granites in the Amdo microcontinent, central Tibetan Plateau. LA-ICP-MS zircon U-Pb dating...
Article
Tremendous granites were produced during the late-stage evolution of the Central Asian Orogenic Belt and important to understanding the tectonic processes from subduction to collision. Here, we present zircon U-Pb-Hf, and whole-rock geochemical, and Sr-Nd isotopic data for a suite of Carboniferous-Permian granites from the Khan-Bogd area of the sou...
Conference Paper
Full-text available
Debates of the Permo-Carboniferous paleogeography of the eastern Central Asian Orogenic Belt (CAOB) mainly focus on the existence, extent, and thereby evolutionary history of the Paleo-Asian Ocean (PAO) in this period. South Mongolia locates at a key position that denotes the southernmost margin of the Mongolia block. Here, we present a paleomagnet...
Preprint
Full-text available
Initiation of stable Mariana type one-sided oceanic subduction zones requires rheologically strong oceanic lithosphere, which developed through secular cooling of Earth mantle. This enabled the development of focused high stress zones resulting in narrow weak zones of convergence with resultant oceanic subduction leading to mantle hydration and arc...
Article
Distinct types of mafic rocks, including gabbro-norite, gabbro-diorite, and monzogabbro-diorite, are exposed in the southern Chinese Altai. Zircon U-Pb dating of these intrusions reveals that they were emplaced at ca. 283–275 Ma. Geochemical data show that these intrusions are characterized by low Ce/Pb (3.1–10.3), low Nb/U (5.5–38.9), and high Th/...
Preprint
Full-text available
Accompanying Gondwana assembly, widespread but diachronous Ediacaran-early Paleozoic magmatism of uncertain origin occurred along the supercontinent's proto-Tethyan margin. We report new geochemi-cal, isotopic, and geochronological data for Cambrian magmatic rocks (ca. 500 Ma) from the Gondwana-derived North Lhasa terrane, located in the present-da...
Article
Full-text available
The evolution of the Mozambique Ocean spans the Rodinia and Gondwana supercontinent cycles playing a key role in Earth history. Integrated petrological, geochronological, geochemical, and isotopic data on the Neoproterozoic units from the Lhasa terrane, Tibet, constrain the magmatic and metamorphic evolution of the ocean. Our results reveal two mag...
Article
Neoproterozoic to Paleozoic sedimentation shows systematic temporal-spatial variations within South China, which must be considered in reconstructing geological evolution of South China in response to global plate reorganization from the breakup of Rodinia to the assembly of Gondwana. We use >1000 new U-Pb and Hf isotopic data for detrital zircons...
Article
Some Asian blocks were welded into Gondwana, whereas their positions in Gondwana are controversial, especially the Tarim Craton. This is mainly because the Tarim Craton is largely occupied by the Taklamakan desert and only a few rocks crop out along its margins. In this study, we investigate previously little-studied early Neoproterozoic to late Si...
Article
East Junggar is a key element of the southwestern Central Asian Orogenic Belt and the subject of debate relating to the initiation of accretion during the early Palaeozoic. We present zircon UPb ages, geochemistry and Sr–Nd–Hf isotopic compositions of early Palaeozoic andesitic rocks from the Kayishekuola area, northern East Junggar, NW China. The...
Article
Oceanic subduction and its last underthrusted part can both triggers arc-like magmatism. As the existence of multi-subduction zones in the Central Asian Orogenic Belt, controversy still surrounds on when and especially how the subduction of the (Paleo-Asian Ocean) PAO terminated. Here, we present geochronological, geochemical, and LuHf isotopic dat...
Article
Full-text available
Subduction transformation (advancing vs. retreating) may be manifested by compositional variations of arc magmas and may result in oroclinal bending. Identifying relevant chemical and physical processes is crucial for understanding accretionary orogenesis and continental crustal evolution. The Northern Yili Block (NYB) was situated on an active mar...
Article
Full-text available
Clarifying the contributions of pre‐Cenozoic and especially the Mesozoic tectonism to build crustal architecture of the Tibetan plateau is important, especially for evaluating the role of Cenozoic Indo‐Asian collision in creating the present‐day plateau. However, how the Mesozoic tectonism evolved and its influence on the Cenozoic strain distributi...
Article
The Chijianling-Guandishan pluton is distributed in the western and southeastern parts of the Lüliang Complex, which is located in the middle segment of the Trans-North China Orogen, the North China Craton. The main rock types of the pluton are medium to fine-grained dioritic and granitic gneisses metamorphosed to the lower amphibolite facies. Most...
Article
Slab-derived components can significantly diversify subduction-related magmatism, for example, fore-arc ophiolites evolving from normal mid-ocean ridge basalts to fore-arc basalts and then to boninites. Here we show a progressive evolution of back-arc ophiolites controlled by slab-derived components but different from fore-arc ophiolites through st...
Article
Full-text available
The Siziwangqi region of Inner Mongolia lies along the northern margin of the North China Craton. It consists of diverse suites of Precambrian and Phanerozoic rock units including relicts of the Paleo-Asian Ocean, arc magmatic rocks, amphibolites, and TTG (tonalite–trondhjemite–granodiorite). The amphibolite rocks in the Siziwangqi area occur as en...
Article
Full-text available
Recognition of tectonic switching is of great significance for understanding the formation and evolution of ancient accretionary orogens. In this study, whole‐rock geochemical and Sm‐Nd isotopic and zircon U‐Pb, Lu‐Hf isotopic, and trace element data are reported for two generations of metamorphosed mafic rocks from the Lüliang Complex, middle Tran...
Article
Full-text available
In worldwide orogenic belts, crustal-scale ductile shear zones are important tectonic channels along which the orogenic root (i.e., high-grade metamorphic lower-crustal rocks) commonly experienced a relatively quick exhumation or uplift process. However, their tectonic nature and geodynamic processes are poorly constrained. In the Trans−North China...
Article
Full-text available
Granitoid rocks are universal in continental crust and are of special significance in understanding tectonic settings. This paper presents detailed zircon U-Pb dating, Hf isotope, whole-rock geochemistry, and Sr-Nd-Pb isotope analyses, and mineralogy of two Ordovician granitoid intrusions and one quartz diorite intrusion in Western Kunlun, NW Tibet...
Article
Full-text available
Detrital zircon U‐Pb dating and Hf isotope analysis have been evidenced to be effective for reconstructing paleography and tectonic evolution of different continental blocks/terranes. Our new detrital zircon U‐Pb and Hf isotopic results combined with literature data for the Paleozoic (meta)sedimentary rocks in the Baoshan and Lincang Blocks provide...
Article
Full-text available
The location of the Tarim craton during the assembly and breakup of the Rodinia supercontinent remains enigmatic, with some models advocating a Tarim-Australia connection and others a location at the heart of the unified Rodinia supercontinent between Australia and Laurentia. In this study, our new zircon U-Pb dating results suggest that middle Neo...
Article
As a main part of the North China craton collage system, the tectonic origin of the Bainaimiao arc terrane is still hotly debated, especially its relationship with the North China craton. Thus, we report on a field-based petrological and zircon U-Pb-Hf isotopic study of (meta-)sedimentary and volcanic rocks from the Bainaimiao arc terrane and north...
Raw Data
Raw data for the manuscript "Contributions of Triassic tectonism to build the northern Tibetan plateau"
Article
Two distinct styles of gold mineralization occurred in the Liaodong Peninsula, in the northeastern North China Craton. One formed an altered rock-type gold deposit in the west, and the other formed a quartz vein-type deposit in the east. Geological investigations and structural analysis show that these deposits may have originated from two distinct...