Archean-Mesoproterozoic Crustal Evolution and Crust-Mantle Geodynamics of Western Liaoning-Northeastern Hebei Provinces, North China Craton

320 Pages·2018·11.44 MB·English

by  Wei Wang (auth.)

Springer Theses
Recognizing Outstanding Ph.D. Research
Wei Wang

Archean-Mesoproterozoic
Crustal Evolution and
Crust-Mantle
Geodynamics of Western
Liaoning-Northeastern
Hebei Provinces, North
China Craton
Springer Theses
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Wei Wang
Archean-Mesoproterozoic
Crustal Evolution
and Crust-Mantle
Geodynamics of Western
Liaoning-Northeastern Hebei
Provinces, North China
Craton
Doctoral Thesis accepted by
Peking University,
School of Earth and Space Sciences;
Beijing, China
123
Author Supervisor
Dr. Wei Wang Prof. ShuwenLiu
Schoolof EarthSciences andResources Schoolof EarthandSpace Sciences
ChinaUniversity of Geosciences (Beijing) PekingUniversity
Beijing Beijing
China China
ISSN 2190-5053 ISSN 2190-5061 (electronic)
SpringerTheses
ISBN978-981-10-7921-4 ISBN978-981-10-7922-1 (eBook)
https://doi.org/10.1007/978-981-10-7922-1
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To my family
’
Supervisor s Foreword
TheNorthChinaCraton(NCC)isoneoftheoldestcratonsintheworld,recording
complex Precambrian geological events dating back to *3.8 Ga. It provides a
naturallaboratory tostudytheformationandevolutionofcontinentalcrustaswell
asgeodynamicevolutionthroughoutalmostallthePrecambrianperiod.Duringthe
past two decades, great achievements have been obtained in terms of discovery of
early Archean geological records, sequences of early Precambrian geological
events, crustal growth and evolution, and reconstruction of Paleoproterozoic tec-
tonicframework.Thoughitiswidelyacceptedthatthiscratonwasconsolidatedby
severalseparateblocks,thenumberanddivisionoftheseblocksaswellastimingof
finalamalgamation remainhotlydebated.Whilesome researchers proposethat the
NCCwasformedbycollisionbetweentheEasternBlockandWesternBlockalong
the Trans-North China Orogen at *1.85 Ga, others advocate a *2.5 Ga cra-
tonization event. These controversies are largely resulted from the lack of knowl-
edgeabout(1)thenatureofArcheanbasementterranesandcomparativestudiesof
different terranes; (2) thegenesis and tectonicattributes of late Paleoproterozoic to
Mesoproterozoic tectono-magmatic events; and (3) the formation and evolution of
Precambrian lithospheric mantle and crust-mantle interactions, which essentially
controlled the crustal formation and evolution history.
The metamorphic basement terranes of Western Liaoning-Northeastern Hebei
provinces are located at the northern margin of North China Craton, i.e., the
northwestern part of Eastern Block. They comprise well-exposed Archean base-
mentrocks,andlatePaleoproterozoictomid-Mesoproterozoicmagmaticrocks,and
are ideal to study the prolonged Precambrian evolution of continental crust and
relatedcrust-mantlegeodynamicprocessesofNCC.Theseformthejustificationof
Dr. Wei Wang’s doctoral research work. Detailed geological, petrological,
whole-rock geochemical, and zircon U–Pb and Lu–Hf isotopic data are provided
for the Archean metavolcanic rocks of greenstone belt and granitoid gneisses in
Western Liaoning, the late Paleoproterozoic Jianping diorite–monzonite–syenite
suiteandPingguK-richvolcanicrocks,andthenewlydiscovered*1.23Gamafic
dykeswarms.Thesedataareusedtoconstrain(1)themagmasourceandgenesisof
each magmatic episode; (2) growth and evolution of continental crust, and
vii
viii Supervisor’sForeword
crust-mantleinteractionsateachtectono-magmaticepisode;and(3)thelithospheric
mantle evolution and crust-mantle geodynamic evolution from Archean to
Mesoproterozoic.
A series of new and innovative achievements were obtained in this doctoral
thesis: (1) the *2640–2534 Ma metavolcanic rocks in Western Liaoning show
geochemical affinities to MORBs, island arc tholeiitic to calc-alkaline basalts,
adakites,andhighmagnesiumandesites,whichareconsideredtohavebeenformed
bythepartialmeltingofasthenosphericmantleatamid-oceanspreadingridgeand
subsequent slab–mantlewedgeinteractions,respectively;(2) the*2532–2506Ma
dioritic and TTG gneisses are divided into two subgroups, i.e., a high magnesium
group (HMG) derived from the partial melting of descending slabs and a low
magnesium group (LMG) from the partial melting of metabasaltic rocks at the arc
root; (3) the *2495 Ma potassium-rich granodioritic and monzogranitic gneisses
are nearly coeval with *2485 Ma granulite facies metamorphism, which could
have been resulted from the partial melting of metamorphosed felsic volcanic and
sedimentary rocks; (4) the *1721–1696 Ma Jianping diorite–monzonite–syenite
suite and *1671–1625 Ma Pinggu K-rich volcanic rocks were derived from the
partial melting of enriched subcontinental lithospheric mantle and depleted
asthenospheric mantle, respectively, forming at post-collisional to post-orogenic
settingsfollowingfinalamalgamationofNCC;and(5)thenewlydiscovered*1.23
Ga mafic dyke swarms cover an area of *0.6 (cid:1) 106 km2, which could have been
produced by complex asthenosphere–lithospheric mantle interactions under a
mantle plume setting.
Based on the above studies, the prolonged Precambrian (*2.6–1.2 Ga) litho-
spheric mantle evolution and crust-mantle geodynamic processes of Western
Liaoning-Northeastern Hebei provinces are established for the first time, high-
lighting that (a) the Western Liaoning Province was evolved at an Archean
accretionary orogenic system, recording subduction accretion-related crust-mantle
geodynamic processes from mid-ocean ridge spreading, through initiation and
maturationofanintra-oceanicarcsystem,tothefinalarc-continentaccretion,which
ismarked by intense *2.6–2.5 Ga crustalgrowth; (b) themetasomatizeddepleted
Archean lithospheric mantle was gradually evolved to an enriched mantle through
close-system evolution during Paleoproterozoic. It was further modified by late
Paleoproterozoic eastward subduction between the Eastern Block and Western
Block, which served as the major mantle sources of the widespread *1780–1680
Ma magmatic rocks within the NCC; and (c) the late Paleoproterozoic enriched
lithospheric mantle witnessed two major episodes of vertical accretion processes
triggered by the *1671–1625 Ma post-orogenic lithospheric delamination and
*1230 Ma global mantle plume events, which led to the final breakup of global
Columbia supercontinent.
These new studies and achievements in this doctoral thesis provide critical
insights into the Precambrian crustal and geodynamic evolution of not only North
China Craton, but also our Planetary Earth, particularly from the viewpoint of
crust-mantleinteractions.Thoughwhenandhowplatetectonicprocessesstartedon
earth remain contentious, this doctoral thesis provides some critical lines of
Supervisor’sForeword ix
evidence supporting that Neoarchean lateral subduction–accretion processes could
have been operated in the North China Craton. Dr. Wang’s current research focus
on the comparison of crust-mantle interaction processes in the late Archean sub-
duction–accretion systemalong thenorthernmarginofNCCwith thoseofmodern
ones as well as early Archean pre-subduction geodynamic regimes, which open a
new window into our further understanding of the early geodynamic evolution
history of the Earth. Accordingly, Dr. Wang’s doctoral thesis provides a leading
and exemplary ways for the future Precambrian studies of both the North China
Craton and other ancient cratons in the world.
Beijing, China Prof. Shuwen Liu
June 2017
Parts of this doctoral thesis have been published in the following journal
articles:
1. Wang, W., Liu, S.W., Santosh, M., Wang, G.H., Bai, X., Guo, R.R., 2015a.
Neoarchean intra-oceanic arc system in the Western Liaoning Province:
ImplicationsforEarlyPrecambriancrustalevolutionintheEasternBlockofthe
North China Craton. Earth-Science Reviews 150, 329–364. (Reproduced with
permission)
2. Wang, W., Liu, S.W., Santosh, M., et al. 2015b. Late Paleoproterozoic geo-
dynamicsoftheNorthChinaCraton:GeochemicalandzirconU-Pb-Hfrecords
from a volcanic suite in the Yanliao rift. Gondwana Research 27, 300–325.
(Reproduced with permission)
3. Wang,W.,Liu,S.W.,Santosh,M.,Zhang,L.F.,Bai,X.,Zhao,Y.,Zhang,S.H.,
Guo, R.R., 2015c. 1.23 Ga mafic dykes in the North China Craton reconstruct
the Columbia supercontinent. Gondwana Research 27, 1407–1418.
(Reproduced with permission)
4. Wang, W., Liu, S.W., Santosh, M., Bai, X., Li, Q.G., Yang, P.T., Guo, R.R.,
2013a. Zircon U–Pb–Hf isotopes and whole-rock geochemistry of granitoid
gneisses in the Jianping gneissic terrane, Western Liaoning Province:
Constraints on the Neoarchean crustal evolution of the North China Craton.
Precambrian Research 224, 184–221. (Reproduced with permission)
5. Wang. W., Liu, S.W., Bai, X., et al. 2013b. Geochemistry and zircon U-Pb-Hf
isotopes of the late Paleoproterozoic Jianping diorite-monzonite-syenite suite
of the North China Craton: Implications for petrogenesis and geodynamic set-
ting. Lithos 162–163, 175–194. (Reproduced with permission)
6. Wang, W., Liu, S.W., Wilde, S.A., Li, Q.G., Zhang, J., Bai, X., Yang, P.T.,
Guo, R.R., 2012. Petrogenesis and geochronology of Precambrian granitoid
gneisses in Western Liaoning Province: Constraints on Neoarchean to early
Paleoproterozoic crustal evolution of the North China Craton. Precambrian
Research 222–223, 290–311. (Reproduced with permission)
7. Wang, W., Liu, S.W., Bai, X., Yang, P.T., Li, Q.G., Zhang, L.F., 2011.
Geochemistry and zircon U-Pb-Hf isotopic systematics of the Neoarchean
Yixian-Fuxin greenstone belt, northern margin of the North China Craton:
Implicationsforpetrogenesisandtectonicsetting.GondwanaResearch20,64–
81. (Reproduced with permission)
xi