Article
Geosciences, Multidisciplinary
Grazina Skridlaite, Laurynas Siliauskas, Martin J. Whitehouse, Ake Johansson, Andrius Rimsa
Summary: The Mid-Lithuanian Domain (MLD) was identified as part of the large Mid-Baltic Belt (MBB) by Bogdanova et al. (2015) in the western East European Craton. The MLD is divided into NW and SE parts, with magmatic activity dating back to 1.86 to 1.83 Ga in the NW and 1.87 to 1.82 Ga in the SE. Rocks in the MLD show similarities with contemporaneous metavolcanics in Sweden, suggesting they may belong to the same tectonic belt.
PRECAMBRIAN RESEARCH
(2021)
Article
Geochemistry & Geophysics
Jin-Feng Sun, Jin-Hui Yang, Ji-Heng Zhang, Yue-Heng Yang, Yu-Sheng Zhu
Summary: Apatite geochemical and Sr-Nd isotopic compositions are powerful tools for studying the source and evolution of magma, providing evidence for the origin of granitoids. The distinct occurrences, geochemical features, and isotopic compositions of apatite grains in Early Cretaceous granite from northeastern China suggest different origins and processes.
Article
Geochemistry & Geophysics
Ammini Sasidharan Silpa, Madhusoodhan Satish-Kumar, Toshiro Takahashi
Summary: This study presents the geochemical and isotopic characteristics of mafic dykes in the late Archean Western Dharwar craton of southern India, revealing different types of dykes and reflecting the evolution of the subcontinental lithospheric mantle from the late Archean to the early Proterozoic.
Article
Geochemistry & Geophysics
Artur Kuligiewicz, Jan Srodon, Sirle Liivamagi
Summary: The study aimed to investigate the oxygen isotopic composition of the Ediacaran weathering material from the western margin of the East European Craton. Results showed isotopic disequilibrium caused by diagenetic illite in the investigated samples.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geosciences, Multidisciplinary
Xingyuan Wu, Xiaoyang Liu, Kai Sun, Kangkang Xu, Hongwei Sun, Penghui Gong, Shengfei He, Godfery Machumu
Summary: The northern part of the Tanzania Craton is mainly composed of low-grade metamorphic granite-greenstone belts. The greenstone belts have received significant research attention due to their gold-endowment and have been interpreted to form in different tectonic settings. The dominant component of Archean crust, TTG gneiss, has been less studied compared to the mafic volcanics of the greenstone belts. This study presents a comprehensive geochemical dataset for TTG suites from the Katoro area in northwestern Tanzania, providing insights into their formation and tectonic evolution.
PRECAMBRIAN RESEARCH
(2023)
Article
Geochemistry & Geophysics
Avishek Adhikari, Ankita Nandi, Shreya Mukherjee, Ravikant Vadlamani
Summary: The petrogenesis of Neoarchean dyke swarms and dispersed volcanic successions in the Singhbhum craton has the potential to constrain mantle heterogeneity. Geochemical modeling, Sr and Nd isotopic analyses, and geochronology study indicate that these rocks likely originate from a metasomatised subcontinental lithospheric mantle enriched before 2800 Ma through subduction processes. The interaction with metasomatised SCLM formed diverse dykes and basaltic andesitic-andesitic volcanics through assimilation-fractional crystallization processes.
Article
Geochemistry & Geophysics
Qiuling Li, Shuqing Qiao, Xuefa Shi, Yufei Chen, Anatolii Astakhov, Hui Zhang, Limin Hu, Gang Yang, Alexander Bosin, Yuri Vasilenko, Linsen Dong
Summary: This study investigated the sedimentary identification of the East Siberian Arctic Shelf (ESAS) to explore the distribution, sources, and transport pathways of terrigenous materials and track regional sea ice transport. The study found that Western Laptev Sea sediments were derived from Siberian flood basalt, while Eastern Laptev Sea-Western East Siberian Sea sediments came from ancient clastic and metamorphic rocks. Sediments in the Eastern East Siberian Sea-Western Chukchi Sea were influenced by weathering products from the Okhotsk-Chukotka volcanic belt, and Eastern Chukchi Sea sediments were influenced by coastal erosion inputs from Alaska and Yukon River material transported via Pacific Sea Water.
Article
Geochemistry & Geophysics
E. Bruand, C. Storey, M. Fowler, B. Dhuime, R. Doucelance
Summary: It is well-established that lanthanide rare earth elements (REEs) have the potential to record the nature and source characteristics of their host magmas, in both whole-rock and their minerals. This study focused on the multi-isotope analysis of titanite, zircon and apatite from high Ba-Sr granitoids in Northwest Scotland, revealing compatible isotopic systems and providing insight into the overall, mineral, and rock isotopic characteristics of the region. The study demonstrates that magmatic titanite and apatite, in addition to zircons, can provide detailed petrogenetic records, and suggests that integrated multi-mineral approaches have the potential to maximize constraints from in-situ mineral isotope geochemistry.
Article
Geochemistry & Geophysics
Qingshang Shi, Yongsheng He, Zhidan Zhao, Dong Liu, Nigel Harris, Di-Cheng Zhu
Summary: The study presents Fe isotopic data of Himalayan leucogranites to investigate their petrogenesis, suggesting that they are likely formed from partial melting of the crust rather than high degree of fractional crystallization. The elevated Fe isotopic values in most leucogranites compared to the supposed source rocks indicate possible Fe isotope fractionation during crustal anatexis. This study provides insights into the conditions of crustal anatexis and the thermal and tectonic evolution of the Himalayan orogen.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geology
Zhihua Li, Bile Li, Peng Li, Yaming Sun, Yufan Shi
Summary: The Heishishan skarn Cu-Pb-Zn deposit is located in the East Kunlun Orogenic Belt and is associated with the Heishishan monzogranite and marble of the Jinshuikou Group. Geochemical analysis indicates that the monzogranite represents a crust-mantle magma mixing origin, while the granodiorite originated from partial melting of the lower crust. The ore-forming rock is determined based on the spatial contact relationship, geochemistry, and magma fertility. The metallogenic epoch of 241.7 Ma is under the subduction tectonic setting of the PaleoTethys Ocean.
ORE GEOLOGY REVIEWS
(2023)
Article
Geochemistry & Geophysics
Amiya K. Samal, Rajesh K. Srivastava, Waliur Rahaman
Summary: The study on the mafic dyke swarms in Dharwar craton revealed differences in origin and material sources between the ca. 2.26-2.25 Ga and ca. 2.08 Ga dykes, indicating that the former were relatively more enriched and may have derived from a deeper mantle source.
Article
Geology
Hongbin Li, Yu Zhang, Yongjun Shao, Lianjie Zhao, Kofi Adomako-Ansah
Summary: The Xiayingfang Au-Cu polymetallic deposit in the northern margin of the North China Craton consists of multiple magmatic rocks hosting auriferous quartz-sulfide veins. Each type of magmatic rock has distinct characteristics, providing clues to the genesis of the deposit.
ORE GEOLOGY REVIEWS
(2021)
Article
Geochemistry & Geophysics
Elena Agasheva
Summary: The study presents a detailed analysis of sandstones recovered from the newly discovered KL-01 magmatic pipe in the southern part of the Arkhangelsk diamondiferous province. By comparing the results with other kimberlite pipes in the region, a model of binary mixing between country sandstones and typical magmatic rocks was proposed. The results suggest that the KL-01 samples contain kimberlite components, indicating a potential for diamond formation and preservation.
Article
Geology
Chengwu Ding, Binchao Zhao, Pan Dai, Dapeng Li, Zhaolu Zhang, Rongtao Sun, Pengfei Wei, Qi Liu, Dejian Li
Summary: The Weishan rare earth element (REE) deposit in China is one of the largest carbonatite-associated REE deposits, formed by quartz syenite and carbonatite veins controlled by faults. The isotope compositions of the deposit suggest a close genetic relationship and origin from the Mesozoic subcontinental lithospheric mantle. The deposit is enriched in REEs, Sr, and Ba, with a potential connection to CO2-rich fluids from recycled marine sediments.
ORE GEOLOGY REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Nan Gao, Yingkui Xu, Dan Zhu, Yang Li, Xiongyao Li, Jianzhong Liu, Jin-Cheng Luo
Summary: High-precision K isotopes, apatite U-Pb ages, whole-rock elements, and Sr-Nd isotopes were studied for the Saima nephelite syenite in the North China Craton. The results show the presence of subducting sediments in the source region and similar K isotopic compositions to the asthenosphere, suggesting interaction between sediments and mantle rocks. Numerical simulations confirm that ancient subducting melts can effectively homogenize isotopic compositions in the lithospheric mantle over a long time interval.
GEOLOGICAL MAGAZINE
(2023)
Article
Geosciences, Multidisciplinary
S. B. Felitsyn, E. S. Bogomolov, N. A. Alfimova
DOKLADY EARTH SCIENCES
(2015)
Article
Paleontology
M. M. Astafieva, S. B. Felitsyn, N. A. Alfimova
PALEONTOLOGICAL JOURNAL
(2017)
Article
Geochemistry & Geophysics
N. A. Alfimova, S. B. Felitsyn, V. A. Matrenichev
LITHOLOGY AND MINERAL RESOURCES
(2011)
Article
Geochemistry & Geophysics
S. B. Felitsyn, N. A. Alfimova, E. V. Klimova
LITHOLOGY AND MINERAL RESOURCES
(2011)
Article
Geosciences, Multidisciplinary
Nadezhda A. Alfimova, Alexey A. Novoselov, VjacheslavA. Matrenichev, Carlos Roberto de Souza Filho
PRECAMBRIAN RESEARCH
(2014)
Article
Geochemistry & Geophysics
Xiangli Wang, Noah J. Planavsky, Axel Hofmann, Erin E. Saupe, Brian P. De Corte, Pascal Philippot, Stefan V. LaLonde, Noah E. Jemison, Huijuan Zou, Frantz Ossa Ossa, Kyle Rybacki, Nadezhda Alfimova, Matthew J. Larson, Harilaos Tsikos, Philip W. Fralick, Thomas M. Johnson, Andrew C. Knudsen, Christopher T. Reinhard, Kurt O. Konhauser
GEOCHIMICA ET COSMOCHIMICA ACTA
(2018)
Article
Geosciences, Multidisciplinary
N. Alfimova, Mohd Baqar Raza, S. Felitsyn, V Matrenichev, E. Bogomolov, P. Nasipuri, L. Saha, J. K. Pati, V Kumar
PRECAMBRIAN RESEARCH
(2019)
Article
Paleontology
S. B. Felitsyn, N. A. Alfimova
PALEONTOLOGICAL JOURNAL
(2019)
Article
Geosciences, Multidisciplinary
Sergey B. Felitsyn, Eugeny S. Bogomolov
GEOLOGICAL MAGAZINE
(2020)
Article
Paleontology
M. M. Astafieva, S. B. Felitsyn, N. A. Alfimova
Summary: The presence of bacterial remains in the red quartzites of different regions in Russia suggests a significant contribution of bacterial communities to the formation of hematite pigment in these rocks.
PALEONTOLOGICAL JOURNAL
(2021)
Article
Geosciences, Multidisciplinary
Mohd Baqar Raza, Hifzurrahman, Pritam Nasipuri, Lopamudra Saha, Jayanta Kumar Pati, Nadezhda A. Alfimova, Anil K. Champati
Summary: The study reveals that the BIFs in the Bundelkhand craton were formed through metamorphism, with P-T pseudosection analysis providing insight into the temperature and pressure conditions during their formation. The U-Th-Pb analysis of monazites demonstrates three distinct age clusters, indicating different metamorphic events.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Nadezhda A. A. Alfimova, Anton B. B. Kuznetsov, Ekaterina Klimova, Andrey Bekker
Summary: This study presents the results of a paleoweathering profile in the Precambrian on Chapanshary Island in Central Karelia, which provides insights into the environmental changes and stratigraphic boundaries during that time. The profile developed in a terrestrial setting around 2.2-2.1 billion years ago, with arid to semi-arid climate and high CO2 content in the atmosphere. The findings contribute to our understanding of Precambrian environmental changes and the identification of stratigraphic boundaries.
PRECAMBRIAN RESEARCH
(2022)
Article
Mining & Mineral Processing
Sergey B. Felitsyn, Nadezhda A. Alfimova
Summary: The distribution of gold in biogenic apatites from the Ordovician deposits in the northwest of the East European Platform is concentrated within the Ladoga-Baltic suture zone. Gold is present in high fineness particles on the surface of biogenic apatite fragments and can be easily extracted. Additionally, some samples show a total content of rare earth elements exceeding 1 wt.%.
JOURNAL OF MINING INSTITUTE
(2022)
