TY - JOUR
T1 - Neoproterozoic to early Paleozoic crustal growth, recycling, and the changing geodynamics of North Gondwana
AU - Moghadam, Hadi Shafaii
AU - Li, Qiu Li
AU - Griffin, William L.
AU - Li, Xian Hua
AU - Karsli, Orhan
AU - Spencer, Christopher J.
AU - Santos, Jose F.
AU - Kirchenbaur, Maria
AU - Nasir, Sobhi
AU - O'Reilly, Suzanne Y.
N1 - Funding Information:
This study was funded by the “ National Key Research and Development Program of China ( 2018YFA0702600 )” to X. -H. Li and “ The Chinese Academy of Sciences, President’s International Fellowship Initiative (PIFI, 2019VCB0013 )” to H. S. Moghadam. This study also received financial support from TÜBITAK (the Scientific and Technological Research Council of Turkey) under project number 122C146, during the preparation of these results for publication. J.F. Santos also wishes to express gratitude to the Foundation for Science and Technology, Portugal (FCT), for their generous funding support of the Geobiotec project (UIDB/04035/2020)
Funding Information:
This study was funded by the “National Key Research and Development Program of China (2018YFA0702600)” to X. -H. Li and “The Chinese Academy of Sciences, President's International Fellowship Initiative (PIFI, 2019VCB0013)” to H. S. Moghadam. This study also received financial support from TÜBITAK (the Scientific and Technological Research Council of Turkey) under project number 122C146, during the preparation of these results for publication. J.F. Santos also wishes to express gratitude to the Foundation for Science and Technology, Portugal (FCT), for their generous funding support of the Geobiotec project (UIDB/04035/2020), This is contribution 1777 from the ARC Centre of Excellence for Core to Crust Fluid Systems (http://www.ccfs.mq.edu.au) and 1545 in the GEMOC Key Centre (http://www.gemoc.mq.edu.au) and it is related to IGCP-662. The analytical data at Macquarie University were obtained using instrumentation funded by DEST Systemic Infrastructure Grants, ARC LIEF, NCRIS/AuScope, industry partners and Macquarie University. All data underlying the findings of this paper can be accessed from both “Appendix A” and “Mendeley Data, V1 (https://data.mendeley.com), doi:10.17632/p9zk52xb7h.1”. The manuscript has received valuable editorial input from M. Santosh and Yongjiang Liu. Furthermore, it has undergone substantial improvement through the rigorous review process by Jiří Žák and Sebastián Oriolo. Their insightful comments have played a crucial role in enhancing the coherence of our paper. Additionally, we express our gratitude to Peter Cawood for his early review of the manuscript. Special acknowledgment is extended to Elena Belousova for her provision of the zircon Temora standard used for the SIMS analysis.
Funding Information:
This is contribution 1777 from the ARC Centre of Excellence for Core to Crust Fluid Systems (http://www.ccfs.mq.edu.au) and 1545 in the GEMOC Key Centre (http://www.gemoc.mq.edu.au) and it is related to IGCP-662. The analytical data at Macquarie University were obtained using instrumentation funded by DEST Systemic Infrastructure Grants, ARC LIEF, NCRIS/AuScope, industry partners and Macquarie University. All data underlying the findings of this paper can be accessed from both “ Appendix A ” and “Mendeley Data, V1 (https://data.mendeley.com), doi:10.17632/p9zk52xb7h.1”. The manuscript has received valuable editorial input from M. Santosh and Yongjiang Liu. Furthermore, it has undergone substantial improvement through the rigorous review process by Jiří Žák and Sebastián Oriolo. Their insightful comments have played a crucial role in enhancing the coherence of our paper. Additionally, we express our gratitude to Peter Cawood for his early review of the manuscript. Special acknowledgment is extended to Elena Belousova for her provision of the zircon Temora standard used for the SIMS analysis.
Publisher Copyright:
© 2023 International Association for Gondwana Research
PY - 2024/2/1
Y1 - 2024/2/1
N2 - Understanding crustal growth, reworking, and geodynamics of the northern continental margin of Gondwana during Ediacaran to Silurian times plays an important role in Gondwana's paleogeographic reconstruction. This study uses a combination of bulk-rock geochemistry, magmatic and detrital zircon geochronology, zircon trace element, and O-Hf isotope data to evaluate the Ediacaran-early Paleozoic magmatic history of northern Gondwana. Our detrital zircon data from Ediacaran to Ordovician sedimentary successions of central Iran show that the 620–500 Ma detrital zircon likely originates from the erosion of the Cadomian arcs in Iran and Anatolia. This zircon shows variable εHf(t) and δ18O values and Nb/Yb, U/Yb, and U/Nb, resembling arc rocks. The Cryogenian (1000–620 Ma) detrital zircon with juvenile εHf(t) and mantle-like δ18O values could have been supplied from erosion of the juvenile crust of the ANS. The youngest age peaks of 488–450 Ma for detrital zircon, in upper Cambrian-Ordovician sedimentary rocks, are considered to show the rifting of Gondwana and Paleotethys opening. Abundant unrounded 2.5 Ga detrital zircon from Ediacaran sandstones probably shows uplift and exhumation of a local source, i.e., the Archean crust of Iran. The Neoproterozoic igneous rocks formed firstly during the subduction of oceanic lithosphere (Mozambique Ocean) beneath northern Gondwana around 880 Ma to form the ANS juvenile crust. Later, the magmatism moved from the ANS toward the northern territories of Gondwana, with peak magmatism at 570–525 Ma. In Cambrian to Ordovician, the Cadomian magmatic arc was uplifted and eroded, and the geodynamic setting switched into juvenile magmatism following rifting of northern Gondwana.
AB - Understanding crustal growth, reworking, and geodynamics of the northern continental margin of Gondwana during Ediacaran to Silurian times plays an important role in Gondwana's paleogeographic reconstruction. This study uses a combination of bulk-rock geochemistry, magmatic and detrital zircon geochronology, zircon trace element, and O-Hf isotope data to evaluate the Ediacaran-early Paleozoic magmatic history of northern Gondwana. Our detrital zircon data from Ediacaran to Ordovician sedimentary successions of central Iran show that the 620–500 Ma detrital zircon likely originates from the erosion of the Cadomian arcs in Iran and Anatolia. This zircon shows variable εHf(t) and δ18O values and Nb/Yb, U/Yb, and U/Nb, resembling arc rocks. The Cryogenian (1000–620 Ma) detrital zircon with juvenile εHf(t) and mantle-like δ18O values could have been supplied from erosion of the juvenile crust of the ANS. The youngest age peaks of 488–450 Ma for detrital zircon, in upper Cambrian-Ordovician sedimentary rocks, are considered to show the rifting of Gondwana and Paleotethys opening. Abundant unrounded 2.5 Ga detrital zircon from Ediacaran sandstones probably shows uplift and exhumation of a local source, i.e., the Archean crust of Iran. The Neoproterozoic igneous rocks formed firstly during the subduction of oceanic lithosphere (Mozambique Ocean) beneath northern Gondwana around 880 Ma to form the ANS juvenile crust. Later, the magmatism moved from the ANS toward the northern territories of Gondwana, with peak magmatism at 570–525 Ma. In Cambrian to Ordovician, the Cadomian magmatic arc was uplifted and eroded, and the geodynamic setting switched into juvenile magmatism following rifting of northern Gondwana.
KW - Crust reworking
KW - Ediacaran magmatism
KW - Gondwana
KW - Iran
KW - Paleotethys
KW - Zircon
UR - http://www.scopus.com/inward/record.url?scp=85174020451&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85174020451&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/8d30b933-a01b-3dec-aaf4-f445e2e51654/
U2 - 10.1016/j.gr.2023.09.006
DO - 10.1016/j.gr.2023.09.006
M3 - Article
AN - SCOPUS:85174020451
SN - 1342-937X
VL - 126
SP - 58
EP - 78
JO - Gondwana Research
JF - Gondwana Research
ER -