Article
Geology
Bruna Saar Almeida, Carlos Augusto Sommer, Farid Chemale, Antonio Joao Paes de Barros, Mauro Cesar Geraldes
Summary: This paper presents zircon U-Pb, REE and Hf data for Paleoproterozoic felsic volcanic rocks from the Colider Group in the southwestern Amazonian Craton, revealing geographical differences in the origin and age of the rocks.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geochemistry & Geophysics
Anirban Mitra, Sukanta Dey, Pranab Das, Keqing Zong, Yongsheng Liu
Summary: Through the study of whole-rock geochemistry, detrital zircon U-Pb-Hf isotopes, and trace element data from Mesoarchean clastic rocks in two greenstone belts of the western Dharwar Craton, it is found that these rocks were derived from a strongly weathered stable continental provenance dominated by low-HREE TTGs and K-rich granites of shallow crustal origin. The detrital zircon U-Pb and Lu-Hf data indicate two major crust formation events, with the antiquity of the western Dharwar Craton traced back to at least 3.8 Ga. The detrital record suggests episodic crustal growth and reworking in the western Dharwar Craton during the Paleoarchean to early Mesoarchean period, possibly related to intraplate processes.
Article
Geology
Cem Yucel, Emre Aydincakir, Abdullah Kaygusuz, Mehmet Arslan, Keewook Yi, Youn-Joong Jeong, Derya Cicerali
Summary: The Late Cretaceous magmatic activity in the Eastern Pontides Orogenic Belt of NE Turkey was characterized by the intrusion of I-type and A-type plutons. A-type plutons from the Sebinkarahisar area, with ages of approximately 77.36 +/- 0.96 Ma, display characteristics of enrichment in K2O and Na2O, Ga, Zr, and strong negative Eu anomalies. These plutons were formed in an extensional tectonic environment and were sourced from a metasomatized lithospheric mantle and juvenile crust.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geochemistry & Geophysics
Alessandro Maltese, Klaus Mezger, Dewashish Upadhyay, Jasper Berndt, Erik E. Scherer
Summary: Research on TTG suites reveals complex petrogenetic processes, predominantly derived from melting of garnet-rich protoliths at multiple depths. Data indicate that the Hf isotopic compositions of TTG rocks and their zircons are associated with late-stage fractional melting processes.
Article
Geochemistry & Geophysics
Alexander I. Slabunov, Vinod K. Singh
Summary: This study provides precise ages for giant quartz veins on the Bundelkhand Craton of the Indian Shield, and reveals their formation is associated with the deformation of the craton lithosphere.
Article
Geosciences, Multidisciplinary
Xin Dong, Zeming Zhang, Zuolin Tian, Yaoling Niu, Liangliang Zhang
Summary: The high-pressure eclogites in the central Himalaya provide insights into the metamorphism and exhumation history of crustal material beneath the Tibetan plateau. Through the analysis of zircon and titanite U-Pb ages, bulk-rock and mineral compositions, and zircon Hf isotope data, the study reveals the evolution of these eclogites, from peak HP eclogite-facies metamorphism to later retrograde metamorphism. The findings suggest a long-lived burial and slow exhumation process of the Indian continental crust since the initial Indo-Asia collision at around 55 Ma.
Article
Acoustics
Xu Kong, Xueyuan Qi, Wentian Mi, Xiaoxin Dong
Summary: The study reveals that the eclogite in the Chicheng area experienced high temperature and high pressure eclogite metamorphism as well as later retrograde metamorphism, forming metamorphic zircons with different characteristics. Isotopic data indicates that the eclogite protolith magma may have mixed with partial crustal components, and the metamorphic events coincide with those of the surrounding rocks, suggesting tectonic subduction and exhumation may have caused regional metamorphism.
SHOCK AND VIBRATION
(2021)
Article
Geosciences, Multidisciplinary
Chengwu Ding, Yifei Liu, Pan Dai, Sihong Jiang, Chengzhen Ding
Summary: By analyzing zircons extracted from samples in the Baoyintu uplift, the affiliation and evolution history of the uplift are determined. The study reveals the presence of Late Palaeoproterozoic rocks in the uplift and identifies the maximum age of the Baoyintu Group as Mesoproterozoic. The research also confirms that the uplift is part of the North China Craton and discovers evidence of metamorphism during ca. 877-851 Ma, suggesting Neoproterozoic magmatic and metamorphic events in the region.
JOURNAL OF EARTH SCIENCE
(2023)
Article
Geology
Shi Zong, Liudong Ren, Meiqian Wu, Hui Xu, Shifei Zhu
Summary: Understanding the geological history of the Larsemann Hills and other exposures in Prydz Bay is crucial for reconstructing the formation and evolution of the East Gondwana continent. Based on the analysis of zircons, the metasedimentary rocks in the Larsemann Hills are mainly derived from Mesoproterozoic to early Neoproterozoic magmatic rocks, and have undergone at least two tectono-metamorphic events. Furthermore, Prydz Bay has existed as a whole entity before the Paleozoic era and was later reactivated by Pan-African tectonic events.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geochemistry & Geophysics
Pin Gao, M. Santosh, Cheng-Xue Yang, Yunpeng Dong, M. Nakagawa
Summary: The study revealed the mineral composition and age characteristics of volcanic rocks in the central segment of the Setouchi volcanic belt in southwest Japan, showing two groups of different zircon grains representing crustal and juvenile sources respectively. Analysis of geochemical and geochronological data showed that the volcanic rocks in this area have evolved through processes of crustal contamination and fractionation, differing from HMA.
Article
Geology
Ling Xing, Wenchang Li, Jun Liu, Mei Zang, Fucheng Yang, Hang Liu, Weiguo Liu, Li Guo, Bing Liu
Summary: The Qukulekedong Au-Sb deposit is the first large Au-Sb deposit discovered in the western section of the East Kunlun Orogenic Belt. This study integrated a regional geological survey and the analysis of deposit characteristics with newly acquired geochemical data to gain insights into the chronology and genesis of this deposit. The results show that the deposit was formed in a Late Triassic post-collision extensional background and is related to crust-derived magmatic activity.
ORE GEOLOGY REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Benjamin Wasilewski, Jonathan O'Neil, Hanika Rizo, Jean-Louis Paquette, Abdel-Mouhcine Gannoun
Summary: The Saglek-Hebron Complex in Northern Labrador, Canada, contains some of the oldest crustal rocks on Earth, with over one billion years of early magmatic history recorded. New analyses on zircons suggest six distinct magmatic events formed the felsic crust, with ages ranging from approximately 3857 Ma to 2750 Ma. The complex and protracted crustal history of the SHC is marked by the reworking of mafic and felsic crust over one billion years.
PRECAMBRIAN RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Min Gao, Zhen-Jie Zhang, Qiu-Ming Cheng, Djordje Grujic
Summary: The Huai'an Complex in the North China Craton consists of TTG gneisses and granite intrusive bodies. Zircon U-Pb ages reveal three episodes of magmatism from 2.6-2.3 Ga, 2.0-1.7 Ga, and similar ages around 2.3-2.0 Ga, indicating different magma sources. The complex underwent crustal growth and reworking stages from 3.1-2.5 Ga to 1.95-1.7 Ga, with tectonic processes of compression-extension-compression during 2.6-1.7 Ga.
Article
Geosciences, Multidisciplinary
Xiaoping Liu, Huichuan Liu, Pin Gao, Wenqi Li, Huan Liu, Jiakai Hou
Summary: The Late Neoarchean-Paleoproterozoic period marked a significant time of continental growth and recycling, with the assembly and subsequent breakup of the Columbia supercontinent. The North China Craton preserves important records of tectonic activities and crust building processes during this time. The study findings suggest significant juvenile crust accretion in the Yanliao intracontinental rift during the Neoarchean and Paleoproterozoic periods.
Article
Geosciences, Multidisciplinary
Dongsheng Wang, Tao Wang, Jing Yan, Meng Li
Summary: The study conducted U-Pb dating, Hf isotope analysis, and geochemical analysis on intermediate-acid intrusive rocks in the Lajishan region, revealing their formation ages, geochemical characteristics, and sources. The results suggest a complex tectonic and magmatic evolution history in the region during the Early Palaeozoic.
GEOLOGICAL JOURNAL
(2021)
Article
Geosciences, Multidisciplinary
Parampreet Kaur, Naveen Chaudhri, Nusrat Eliyas
GEOSCIENCE FRONTIERS
(2019)
Article
Geosciences, Multidisciplinary
Parampreet Kaur, Armin Zeh, Naveen Chaudhri
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2019)
Article
Mineralogy
Alexandre Raphael Cabral, Armin Zeh, Nivea Cristina da Silva Viana, Marco Paulo de Castro, Frantisek Laufek, Bernd Lehmann, Glaucia Queiroga
EUROPEAN JOURNAL OF MINERALOGY
(2019)
Article
Geology
Parampreet Kaur, Armin Zeh, Naveen Chaudhri, Jaideep K. Tiwana
JOURNAL OF GEOLOGY
(2020)
Article
Geochemistry & Geophysics
Armin Zeh, Allan H. Wilson, Dominik Gudelius, Axel Gerdes
JOURNAL OF PETROLOGY
(2019)
Article
Geochemistry & Geophysics
Pierre-Arthur Groulier, Francois Turlin, Anne-Sylvie Andre-Mayer, Daniel Ohnenstetter, Alexandre Crepon, Philippe Boulvais, Marc Poujol, Claire Rollion-Bard, Armin Zeh, Abdelali Moukhsil, Fabien Solgadi, Abdelaziz El basbas
JOURNAL OF PETROLOGY
(2020)
Article
Geochemistry & Geophysics
D. Gudelius, A. Zeh, A. H. Wilson
Article
Geosciences, Multidisciplinary
Felix Djerossem, Julien Berger, Olivier Vanderhaeghe, Moussa Isseini, Jerome Ganne, Armin Zeh
BSGF-EARTH SCIENCES BULLETIN
(2020)
Article
Geosciences, Multidisciplinary
Bernd Lehmann, Basem A. Zoheir, Leonid A. Neymark, Armin Zeh, Ashraf Emam, Abdelhady M. Radwan, Rongqing Zhang, Richard J. Moscati
Article
Geosciences, Multidisciplinary
Armin Zeh, Allan H. Wilson, Axel Gerdes
PRECAMBRIAN RESEARCH
(2020)
Article
Geosciences, Multidisciplinary
Alexandre Raphael Cabral, Armin Zeh, Miguel Tupinamba, Julia Pimenta
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Article
Geosciences, Multidisciplinary
Parampreet Kaur, Armin Zeh, Naveen Chaudhri
Summary: The Central Aravalli Banded Gneissic Complex in northwest India is a Proterozoic terrane with Archean components, consisting of granulites, granitoids, TTG gneisses, and metasedimentary rocks. Zircon U-Pb-Hf isotopes and whole-rock geochemical data reveal a complex history of magmatic intrusions and crustal evolution in the region, with evidence of early Paleoarchean crust formation and later Grenville-age metamorphic events. The composition and origins of different rock types, such as Neoarchean TTGs and Paleoproterozoic A-type granitoids, provide insights into the geological processes that shaped the Aravalli orogen.
PRECAMBRIAN RESEARCH
(2021)
Article
Geology
Parampreet Kaur, Prabhakar Dutta, Swati Sharma, Naveen Chaudhri
Summary: The provenance and tectonic setting of the Stenian metasedimentary sequences of the South Delhi Supergroup in NW India are still unclear and subject to debate. This study found that the metasedimentary rocks mainly originated from felsic sources, particularly Mesoproterozoic granitoids in northern and eastern India. The weathering indices indicate low to moderate weathering, and the sediment compositions reflect a mixture of different provenance components. The tectonic discrimination diagrams suggest a passive margin setting for the South Delhi metasedimentary rocks, consistent with the detrital zircon age spectra and regional geology of the western margin of the Aravalli orogen.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Multidisciplinary Sciences
Jaideep K. Tiwana, Parampreet Kaur, Naveen Chaudhri, Manisha