Article
Geosciences, Multidisciplinary
Erkan Gun, Russell N. Pysklywec, Oguz H. Gogus, Gultekin Topuz
Summary: This study investigates the geodynamics of terranes during the pre- to post-collisional period through numerical experiments. The results show that terranes may undergo extension before reaching subduction plate boundaries, and factors such as increased crustal thickness, decreased width, and reduced convergence velocity promote terrane accretion.
Article
Geosciences, Multidisciplinary
Derrick Hasterok, Jacqueline A. Halpin, Alan S. Collins, Martin Hand, Corne Kreemer, Matthew G. Gard, Stijn Glorie
Summary: Accurate spatial models of tectonic plates and geological terranes are crucial for analyzing geoscientific data and developing lithosphere models. This study presents a global compilation of these models, refined with various constraints and showing improved correlation with earthquake and volcano occurrences. While there is room for improvement, these digital maps provide a consistent data standard for geoscientific databases.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geochemistry & Geophysics
Yao Sun, Ruohan Gao, Zhiwei Li, Andong Wang, Ran Han, Yufei Xi, Jingao Liu
Summary: The chemical composition of continental crust is fundamental in understanding its origin and evolution. However, the chemical compositions of orogenic belts, which make up 30% of the global continental crust, are still poorly understood. This study provides an estimate of the crustal composition of the Southeast China orogenic belt using a 3-D crustal model. The results show that the Southeast China has one of the most evolved continental crust compositions compared to other estimates. Chemical weathering is identified as the main process modifying the composition of the upper continental crust, while intracrustal differentiation and chemical weathering together control the composition of the bulk continental crust. Orogenic belts like the Southeast China can develop highly evolved crustal compositions due to extensive intracrustal reworking, enhanced chemical weathering, and potential removal of thickened crustal roots. An overall estimation of the average composition of the continental crust should take into account the evolved composition of orogenic belts.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Review
Geosciences, Multidisciplinary
Yunpeng Dong, Shengsi Sun, M. Santosh, Bo Hui, Jiaopeng Sun, Feifei Zhang, Bin Cheng, Zhao Yang, Xiaohui Shi, Dengfeng He, Lei Yang, Chao Cheng, Xiaoming Liu, Xiaohu Zhou, Wei Wang, Nan Qi
Summary: The East Asian continent has a complex geological and tectonic history that shaped the formation and evolution of the China continent. The Central China Orogenic Belt and the Helan-Chuandian Orogenic Belt, known as the Cross Orogenic Belts, played a crucial role in controlling the geological, geographical, ecological, environmental, economic, and cultural division of the China continent. The uplift of these belts influenced the climate, environment, economy, and culture in different regions of China.
Article
Geosciences, Multidisciplinary
Didi Wu, Shan Li, David Chew, Tieyi Liu, Donghai Guo
Summary: This study investigates the magmatic evolution from subduction to (soft) collision in the Central Asian Orogenic Belt by analyzing Permian-Triassic granitoids in northern China. The findings suggest a transition from juvenile to old crust, with increasing incorporation of old crust and scissor-like closure of the Paleo-Asian Ocean. A three-stage tectonic model is proposed, detailing the evolution from accretion in the Early Permian to collision in the Late Triassic on the southeastern margin of CAOB.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Claudio Faccenna, Thorsten W. Becker, Adam F. Holt, Jean Pierre Brun
Summary: This study explores the mechanisms behind orogeny, distinguishing between upper mantle subduction and whole mantle convection cells, with the latter causing extreme crustal thickening. Research suggests that slab penetration into the lower mantle may trigger whole mantle convection cells, supported by geological evidence.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geology
Yebo Liu, Ross N. Mitchell, Michael Brown, Tim E. Johnson, Sergei Pisarevsky
Summary: There is a clear spatiotemporal correlation between different types of metamorphism and active convergent plate margins since the Jurassic. The relationship extends into the past, with low-T/P metamorphism located near plate margins and intermediate-and high-T/P metamorphism occurring further away. The style of orogenesis has evolved from hotter to colder, leading to the emergence of low-T/P metamorphism in the Cryogenian.
Article
Geosciences, Multidisciplinary
Yiqiong Zhang, Dengfa He, Bin Wu, Huahua Gao
Summary: The Yubei-Tangbei area in the southern Tarim Basin is identified to be one of the best-preserved early Paleozoic fold-and-thrust belts, crucial for hydrocarbon exploration in northwestern China. Detailed chronostratigraphic framework and structural analyses reveal the sequential evolution process of the fold-and-thrust belts, providing insights into the tectonic evolution stages and responses to collisional events in the region.
GEOSCIENCE FRONTIERS
(2021)
Article
Geochemistry & Geophysics
Chengyuan Wang, Stephen F. Foley, Yongsheng Liu, Yu Wang, Yi-Gang Xu
Summary: Carboante melts provide insights into the deep carbon cycle, and the intruded Cenozoic carbonate melt dykes in the Yanshan orogen show strong limestone-like geochemical features. These melts are formed by melting of downthrust limestone strata in the Yanshan orogen triggered by underplating with basaltic melts during the Cenozoic upwelling of asthenosphere below the area. This model can apply to many carbonate melts in orogenic belts and highlights the carbonate sediments deposited in the continental crust as an important source.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geochemistry & Geophysics
Ian W. Hillenbrand, Michael L. Williams, Cong Li, Haiying Gao
Summary: High elevation orogenic plateaus are formed by a complex interplay of deep and surficial processes, with evidence of the existence of such a plateau during and after the Devonian Acadian orogeny. The crustal evolution of this paleo-plateau is constrained by new petrologic and geochronologic databases, revealing characteristics of doubly thickened crust, widespread metamorphic conditions, and mid-crustal anatexis, indicating the development of a high elevation plateau. The collapse and thinning of the plateau crust may have led to sharp Moho depth variations and influenced various geological processes.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Multidisciplinary Sciences
Baohua Zhang, Hongzhan Fei, Jianhua Ge, Lingsen Zeng, Qunke Xia
Summary: Partial melting in the continental crust plays a critical role in mountain building processes, though the specific mechanisms are not well understood. Research on the thermal properties of constituent rocks in orogenic belts suggests that the melting of wet granite and eclogite may explain phenomena observed in continental collision zones.
NATURE COMMUNICATIONS
(2022)
Article
Geochemistry & Geophysics
Quentin Masurel, Nicolas Thebaud, Andrew Allibone, Anne-Sylvie Andre-Mayer, Kim A. A. Hein, Laurie Reisberg, Olivier Bruguier, Aurelien Eglinger, John Miller
Summary: The Bonikro and Hire gold deposits in Cote d'Ivoire are associated with Paleoproterozoic tectonic and magmatic events. The mineralization at Bonikro is mainly hosted within a porphyritic granodiorite, while the mineralization at Hire is shear-hosted. Both deposits exhibit different types of gold mineralization and timing, highlighting the genetic diversity of granitoid-hosted gold mineralization in the region.
MINERALIUM DEPOSITA
(2022)
Article
Geosciences, Multidisciplinary
Yiwen Ju, Guangzeng Wang, Sanzhong Li, Ying Sun, Yanhui Suo, Ian Somerville, Wuyang Li, Bizhu He, Menglin Zheng, Kun Yu
Summary: The sedimentary basin is a fundamental geological unit in the Earth system, whose formation and evolution are influenced by plate tectonics and geodynamics. Traditional basin classification schemes cannot account for all basin types or reflect the complex processes involved. A new classification scheme based on geodynamic mechanisms is proposed, which emphasizes the role of lithospheric plates, sublithospheric actions, and Earth surface actions in controlling basin formation and evolution. This scheme provides a comprehensive understanding of lithosphere, crust-mantle interaction, and geodynamic processes in sedimentary basins, and facilitates the exploration of various resources.
Article
Geochemistry & Geophysics
Eva Oravecz, Gabor Heja, Laszlo Fodor
Summary: In this study, the authors explain several diagnostic structural and sedimentary features that may be used to distinguish pre-orogenic halokinetic structures from shortening-related structures in the Silica Nappe. They also discuss the effects of pre-orogenic salt tectonics on the fold-and-thrust belt evolution.
Review
Geosciences, Multidisciplinary
Alexandra Guy, K. Schulmann, I. Soejono, N. Holzrichter, O. Lexa, M. Munschy
Summary: By integrating potential field analysis with geological and geochemical data, new insights into the crustal structure and evolution of the Mongolian collage are gained. The inconsistency between geologically defined terranes and geophysical domains in the southwestern part of the Mongolian collage is demonstrated by magnetic and gravity data. The homogeneous lower crust composed of felsic to intermediate juvenile material beneath a geophysically heterogeneous upper crust is interpreted as a result of a trench-directed lower crustal emplacement of an arc type crust underplating deformed Paleozoic oceanic crust.
Article
Environmental Sciences
Encelyn Voisine, Yann Rolland, Matthias Bernet, Julien Carcaillet, Guillaume Duclaux, Jerome Bascou, Christian Sue, Melanie Balvay, Rene-Pierre Menot
Article
Archaeology
T. Vettor, V. Sautter, S. Pont, C. Harivel, L. Jolivet, I. Moretti, J. C. Moretti
Summary: This paper presents chemical data on ancient marble quarries of Delos Island and architectural marbles from its archaeological site. It introduces a methodology using portable X-ray fluorescence (pXRF) analyser in combination with principal component analysis (PCA) to determine marble provenance, showing its effectiveness as a powerful tool when conventional destructive analyses are precluded.
Article
Geochemistry & Geophysics
Alexandre Beaudoin, Stephane Scaillet, Nicolas Mora, Laurent Jolivet, Romain Augier
Article
Geosciences, Multidisciplinary
Laurent Jolivet, Armel Menant, Vincent Roche, Laetitia Le Pourhiet, Agnes Maillard, Romain Augier, Damien Do Couto, Christian Gorini, Isabelle Thinon, Albane Canva
Summary: This paper reviews the diverse structures in the back-arc regions of the Mediterranean and discusses the distribution of deformation between high-angle and low-angle faults, illustrating the importance of slab tearing for the evolution of this region.
BSGF-EARTH SCIENCES BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
Eloise Bessiere, Laurent Jolivet, Romain Augier, Stephane Scaillet, Jacques Precigout, Jose-Miguel Azanon, Ana Crespo-Blanc, Emmanuel Masini, Damien Do Couto
Summary: The study reveals that the evolution of Mediterranean orogens is highly complex, involving interactions between the subducting lithosphere, the overriding plate, and the asthenosphere. Research in the Alboran domain highlights the causal relationship between tectonic events and pressure-temperature evolution. Based on 40Ar/39Ar dating, it is concluded that HP-LT metamorphism in all complexes occurred during the Eocene epoch.
BSGF-EARTH SCIENCES BULLETIN
(2021)
Article
Geochemistry & Geophysics
Laurent Jolivet, Violaine Sautter, Isabelle Moretti, Tommy Vettor, Zozi Papadopoulou, Romain Augier, Yoann Denele, Laurent Arbaret
Summary: The post-orogenic extension in back-arc regions is associated with metamorphic core complexes (MCCs) and granitic intrusions. The intrusion of high-temperature MMCs and granitoids in the Cyclades Archipelago is controlled by regional extension and detachments. Structural studies based on field surveys of neighboring islands show the interaction between the migmatitic core of the MCC and the intrusion in the North Cycladic Detachment System.
JOURNAL OF GEODYNAMICS
(2021)
Article
Geochemistry & Geophysics
M. Ducoux, L. Jolivet, F. Cagnard, T. Baudin
Summary: This study focuses on the Eastern Pyrenees to investigate the relationship between inverted Mesozoic rifted basins and their basement, using temperature estimates and structural data to describe the spatial distribution of various tectono-metamorphic units. The results show that metamorphic sedimentary cover undergoes ductile deformation, while the basement experiences brittle deformation, with post-metamorphism breccias indicating a decollement level in the Upper Triassic evaporites. Contrary to previous models, the study proposes a large thrust displacement of a single metamorphic basin over a basement block, highlighting the general allochthonous position of the former hyperextended rift basin thrusted along a decoupling layer.
Article
Geochemistry & Geophysics
Eloise Bessiere, Romain Augier, Laurent Jolivet, Jacques Precigout, Adrien Romagny
Summary: This study focuses on the Nieves Unit in the Ronda peridotite, using Raman Spectroscopy on Carbonaceous Material to analyze peak-temperature conditions within metasediments and observe a significant obliquity of the isograds to the contact with the peridotites. The presence of magnetite ores and ophicalcite bodies near the contact suggests a hyper-extension context for the mantle exhumation, supporting the idea of a large-scale extensional detachment bringing mantle rocks to the surface during an episode of hyper-extension.
Editorial Material
Geochemistry & Geophysics
Mustapha Meghraoui, Laurent Jolivet, Rinus Wortel, Sandro Conticelli
Article
Geochemistry & Geophysics
Valentin Laurent, Stephane Scaillet, Laurent Jolivet, Romain Augier, Vincent Roche
Summary: The behavior of the phengite 40Ar/39Ar system was studied in Sifnos and Syros Islands, showing a decrease in phengite ages with progressive strain localization during exhumation. Grain-scale variations in Ar retention properties and thermal-kinetic processes play a significant role in controlling the phengite ages in the rock samples.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geochemistry & Geophysics
Eloise Bessiere, Stephane Scaillet, Romain Augier, Laurent Jolivet, Jose Miguel Azanon, Guillermo Booth-Rea, Adrien Romagny, Florian Duval
Summary: This article addresses the issue of interpreting geochronologic data in the Betic-Rif orogen. Through 40Ar/39Ar dating of white mica samples, it reveals a HP event in the Early Eocene (around 38 million years ago) and a regional stage of exhumation at 20 million years ago. This study provides compelling evidence for overcoming the problem of extensive late-orogenic overprinting.
Article
Geosciences, Multidisciplinary
Thomas Gyomlai, Philippe Agard, Horst R. R. Marschall, Laurent Jolivet
Summary: This study uses in-situ Rb/Sr dating on rocks from the Kampos-Lia unit in Syros, Greece to determine the timing of metasomatic events. The main metasomatic event occurred around 36 Ma ago, coinciding with the transition from blueschist to greenschist facies and tectonic exhumation in the Cyclades. The results highlight that fluid-rock interaction along the subduction interface is not continuous, but rather occurs in punctuated, heterogeneously distributed events tied to specific tectonometamorphic episodes.
Article
Geosciences, Multidisciplinary
Tommy Vettor, Violaine Sautter, Laurent Jolivet, Jean-Charles Moretti, Sylvain Pont
Summary: This study investigated the geological characteristics and isotopic composition of Delian marble quarries, providing valuable information for understanding the exploitation of marble during Antiquity. The study identified different types of marble and proposed the potential of using the maximum grain size and isotopic ratios to distinguish Delian marble from other Mediterranean marbles.
BSGF-EARTH SCIENCES BULLETIN
(2022)
Article
Geosciences, Multidisciplinary
Laurent Jolivet, Thierry Baudin, Sylvain Calassou, Sebastien Chevrot, Mary Ford, Benoit Issautier, Eric Lasseur, Emmanuel Masini, Gianreto Manatschal, Frederic Mouthereau, Isabelle Thinon, Olivier Vidal
Summary: The article reviews the main tectonic events in the Western Mediterranean region since the Early Cretaceous, discussing the effects of far-field and near-field contributions on crustal deformation. It analyzes the three distinct periods of tectonic evolution in the region, focusing on Tethyan Tectonics, Mediterranean Tectonics, and Late-Mediterranean Tectonics.
BSGF-EARTH SCIENCES BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
Maxime Ducoux, Laurent Jolivet, Emmanuel Masini, Romain Augier, Abdeltif Lahfid, Matthias Bernet, Sylvain Calassou
Summary: The study focuses on rift-related High-Temperature Low-Pressure (HT/LP) metamorphism in the Pyrenean-Cantabrian belt, showing that this metamorphism is restricted to pre- and syn-rift sediments, with early orogenic sediments also affected by high temperatures. The spatial distribution of HT/LP metamorphism along the Pyrenean-Cantabrian belt is depicted in a new map, indicating similar intensity of the metamorphism across different basins and rift-related structural settings.
BSGF-EARTH SCIENCES BULLETIN
(2021)
