Article
Geosciences, Multidisciplinary
Jie Hu, Yuntao Tian, Zengjie Zhang, Zulie Long, Yuping Huang, Xiaoming Shen, Shengbiao Hu
Summary: This study addresses the drainage evolution of the Pearl River using quantitative unmixing modeling of detrital zircon data. The findings reveal that the Pearl River went through three main stages of evolution, with an expansion towards the west from the Early Oligocene. The establishment and stability of the modern-like drainage system occurred in the Late Oligocene, coinciding with the breakup of the South China Sea and intensified Asian monsoon precipitation.
Article
Geosciences, Multidisciplinary
Hugo K. H. Olierook, Christopher L. Kirkland, Milo Barham, Matthew L. Daggitt, Julie Hollis, Michael Hartnady
Summary: The study presents a technique to rapidly extract meaningful core model ages from core-rim mixtures, along with a Python-based program for easy application of this approach. The efficacy of the technique is demonstrated on a detrital sample from East Greenland, recovering dates of detrital cores from core-rim mixtures. Caution is advised against using this technique without checking the appropriateness of the underlying assumptions, and chemical means are provided for evaluating the assumptions.
Article
Geochemistry & Geophysics
Sean P. Gaynor, Melissa Ruiz, Urs Schaltegger
Summary: This study presents high-precision isotope dilution-thermal ionization mass spectrometry (ID-TIMS) U-Pb zircon data from the Carboniferous Punteglias granodiorite in Switzerland. The results show that the zircon crystals have a mixture of two different age components, and the crystallization age of the zircon is determined to be 335.479 +/- 0.041 Ma. Additionally, pretreating the zircon samples with physical and chemical abrasion reduces age dispersion and allows for a more accurate determination of the initial magmatic domains. The high analytical precision of this study is crucial for correctly interpreting complex age spectra.
Article
Geosciences, Multidisciplinary
Fengyu Sun, Gaoshe Cao
Summary: The origin of bauxite in the bauxite and clay deposits of Western Henan has attracted attention. X-ray diffraction and detrital zircon U-Pb dating analysis revealed that the bauxite mainly originated from the North Qinling Orogenic Belt's Caledonian intermediate-acidic granitic rocks, with possible contributions from metamorphic rocks within the same orogenic belt.
GEOLOGICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Jia-Long Hao, Wei Yang, Sen Hu, Rui-ying Li, Jiang-Long Ji, Hitesh G. Changela, Yang-Ting Lin
Summary: This paper presents a novel Pb-Pb and U-Pb analytical method at a sub-micron scale using a NanoSIMS with a new RF ion source. The technique allows for high spatial resolution but may introduce depth effects, requiring adjustments in the scan area to eliminate mass fractionation. Results from zircon and lunar samples are in good agreement with reference ages within analytical uncertainties.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Geosciences, Multidisciplinary
A. Zeh, A. H. Wilson
Summary: The study reveals a switch in sediment provenance between the lower and upper Mozaan Group. The lower Mozaan Group sediments originated from the surrounding proto-Kaapvaal Craton, while the upper Mozaan Group sediments were mainly derived from a juvenile hinterland, which is similar to the sources for the Central Rand Group sediments. Differences in zircon shape parameters reflect differences in depositional environments.
PRECAMBRIAN RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Jinglian Yuan, Yongjiang Liu, Weimin Li, Liwei Jiang, Sihua Yuan, Sanzhong Li
Summary: This study used 745 detrital zircon LA-ICP-MS U-Pb ages from the Heishuigou and Mangya sections in the western Qaidam Basin to trace the provenances of Jurassic sediments and to further constrain the tectonic evolution of the Qaidam Basin. The results indicate that the South Altyn Tagh Range and the South Qilian Range were the main sources of sediment during the early to middle Jurassic in the western Qaidam Basin.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geography, Physical
Ce Wang, David A. Foster, Ming Su, Yaping Lei, Letian Zeng, Heqi Cui
Summary: The sedimentary evolution in the northern South China Sea during the Holocene is influenced by climate change, sea level rise, and changes in surface circulation. The study reveals that the sediments in the head of the Shenhu submarine canyons primarily come from the Pearl River system and the drainage systems in Taiwan, with no representation from Hainan and Luzon. The study also highlights the reworking of ancient continental crust and the accretion of Cathaysia and Yangtze blocks during the evolution of the South China Craton.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Geosciences, Multidisciplinary
F. R. Harris, D. P. Moecher, E. Tohver
Summary: This study investigates the zircon ages in clastic units from southwestern Brazil, revealing the collision event between southwest Amazonia and southeast Laurentia during the Grenville orogeny. The results indicate that the clastic rocks during the Grenville period in southwestern Amazonia primarily originated from the magmatic rocks of southeast Laurentia and did not migrate to southwest Amazonia during Rodinian assembly.
Article
Geochemistry & Geophysics
Xin Lin, Hong Chang, Domenico Cicchella, Qihang Wu, Ganggang Meng, Asmatullah Yaqoubi
Summary: A major concern of the geoscience community is the provenance of sediments, which is crucial for understanding tectonic and paleoclimatic history. Current methods for measuring similarity in zircon age distributions may lead to erroneous interpretations. We propose an Age-Number fractal model to characterize zircon ages, which is less affected by biases and offers a holistic comparison of age distributions. Using this model, we uncover the provenance of the Chinese Loess Plateau and establish a new pattern of spatial heterogeneity, providing insights into the aeolian and fluvial processes and a more dynamically-evolved CLP than previously thought. Our results will aid the development and interpretation of paleoclimatic proxies.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Spectroscopy
Ya-Nan Yang, Miaohong He, Yan-Qiang Zhang, Yi-Gang Xu
Summary: NanoSIMS is a powerful instrument for Pb/Pb and U/Pb dating at the submicron scale. This study demonstrates that using O-16(2)- as the primary beam species and an RF oxygen ion source can significantly improve the precision and accuracy of the dating method.
ATOMIC SPECTROSCOPY
(2022)
Article
Geochemistry & Geophysics
Peter D. Clift, Chris Mark, Anwar Alizai, Hawas Khan, M. Qasim Jan
Summary: This study used detrital zircon and rutile U-Pb dating to estimate sediment flux in the Nanga Parbat-Haramosh Massif (NPHM) of the Western Himalayan syntaxis. The results show that the sediment contribution from NPHM to the Indus River is relatively small compared to the total zircons reaching the Arabian Sea. The sediment productivity of NPHM is high but lower than the Namche Barwa-Gyala Peri Massif in the Eastern Himalayan syntaxis. The regional exhumation rates in NPHM are lower than previously estimated.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Sang Tianjiao, Pei Fuping, Xu Wenliang, Wang Zhiwei, Jiao Ji, Wei Jingyang, Wang Yipeng
Summary: This study presents LA-ICP-MS zircon U-Pb geochronological data for the Early Paleozoic terranes in the eastern Songliao Massif, providing insights into their provenance and tectonic evolution. The results indicate that the depositional provenance of the formations was derived from the Songliao Massif, with different formation environments. Furthermore, the absence of a collision between the Songliao and Jiamusi massifs before the Late Ordovician is implied.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2021)
Article
Geosciences, Multidisciplinary
Aoife Blowick, Georgia Pe-Piper, David J. W. Piper, Yuanyuan Zhang, Shane Tyrrell
Summary: Provenance analysis using Pb isotopes in detrital K-feldspars successfully tracked first-cycle sand supply in the Scotian Basin, revealing a dynamic see-saw effect between hinterland sources across the Jurassic-Cretaceous boundary. The data also showed progressively increasing long-distance supply from eastern Labrador alongside diminishing local sourcing from adjacent Appalachian terranes. This case study highlights the limitations of using a single mineral proxy and the potential of multiproxy provenance toolkits in deciphering sediment-routing corridors and understanding Earth surface processes and tectonic events.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
Navot Morag, Dov Avigad, Axel Gerdes, Avishai Abbo
Summary: The Miocene continental basins in Israel and Jordan preserve remnants of a continental-wide fluvial system originating in Arabia, with distinct sedimentary provinces in the north and south showing differences in detrital zircon age spectra. The detrital zircon U-Pb-Hf signal of the Israeli Miocene clastic units differs from that of the River Nile, indicating separate fluvial systems on the eastern side of the Red Sea and the western side drained by the River Nile.
Article
Geochemistry & Geophysics
Dunfeng Xiang, Zhiyong Zhang, Thomas Zack, David Chew, Yueheng Yang, Lin Wu, Johan Hogmalm
Summary: Apatite is a common accessory mineral in different types of rocks, but accurate U-Pb LA-ICP-MS dating is often affected by high levels of common Pb. A new Pb-204 correction method was used in this study to improve accuracy and precision by overcoming isobaric interference issues. Experimental results demonstrate that different reaction gases do not significantly affect the accuracy and precision of U-Pb dating.
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
(2021)
Article
Geochemistry & Geophysics
Nan Wang, Zhiyong Zhang, Marco G. Malusa, Lin Wu, David Chew, Jien Zhang, Dunfeng Xiang, Wenjiao Xiao
Summary: Northeast Asia, particularly the Zhangguangcai Range, provides a detailed insight into subduction-related tectonic activities, including the emplacement of granites and eruption of volcanic rocks during the Early Mesozoic, as well as episodic exhumation events since the Jurassic. The interactions and juxtaposition of multiple tectonic domains have led to complex geological processes in this region.
Article
Geosciences, Multidisciplinary
Iman Monsef, Zhiyong Zhang, Esmaeil Shabanian, Petrus le Roux, Mohammad Rahgoshay
Summary: The Cretaceous rift magmatic activity along the southern margin of Eurasia was influenced by the Tethyan subduction zones, and variations in magma composition were due to assimilation-fractional crystallization processes. The Neo-Tethys subduction ignited the Cretaceous rift magmatism in the Iran Armenia-Turkey Plateau and led to crustal metamorphism and stretching.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Chao Guo, Zhiyong Zhang, Marco G. Malusa, David Chew, Dunfeng Xiang, Lin Wu, Nan Wang, Wenjiao Xiao
Summary: The Cenozoic deformation of the Tianshan Mountain Range and its impact on the Tarim Basin's exhumation and topographic growth are investigated in this study through the analysis of detrital apatite fission-track ages. The results show major age-shifts at -23 Ma and -10 Ma, suggesting drainage reorganizations associated with the uplift of the South Tianshan Mountain Range. The progressive topographic growth of the range is found to have influenced the aridification of the Tarim region.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geography, Physical
Zhiyong Zhang, Thomas Zack, Barry Kohn, Marco G. Malusa, Lin Wu, Mahnaz Rezaeian, Nan Wang, Dunfeng Xiang, Chao Guo, Rasoul Esmaeili, Bo Wan, Wenjiao Xiao
Summary: The intrusion rocks in northwest Iran provide an ideal opportunity for studying geothermochronology and recording the tectonic evolution of the Tethys Ocean. Multiple magmatic events during the Late Carboniferous, mid-Cretaceous, and middle Eocene suggest subduction and ridge subduction processes. The results also highlight the significance of subduction and collision in post-magmatic cooling and exhumation processes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geochemistry & Geophysics
Haijian Lu, Xinwen Cao, Marco G. Malusa, Zhiyong Zhang, Jiawei Pan, Haibing Li
Summary: This study presents a high-resolution and continuous record of anisotropy of magnetic susceptibility and paleomagnetic declination to investigate the mechanisms of northern Tibet crustal thickening. The results reveal two major clockwise rotations of the paleostress field at 15 Ma and 8.4 Ma, coinciding with episodes of mountain building and basin deformation. It is suggested that the rotations are related to slowing lateral-extrusion tectonics along strike-slip faults.
Article
Geochemistry & Geophysics
Dunfeng Xiang, Zhiyong Zhang, David Chew, Marc Jolivet, Marco G. Malusa, Chao Guo, Nan Wang, Wenjiao Xiao
Summary: New research on the sedimentary sequences in the northern margin of Tarim Basin provides new insights into the Meso-Cenozoic geodynamic evolution and basin-range interactions in the Tianshan region. The study suggests that the present-day topography of Tianshan is the result of repeated phases of intracontinental deformation and reactivation. The timing of the onset of Cenozoic deformation and the long-term Mesozoic topographic evolution of Tianshan are still debated.
