Finding Argoland: Reconstructing a microcontinental archipelago from the SE Asian accretionary orogen

Gondwana Research, Journal Year: 2023, Volume and Issue: 128, P. 161 - 263

Published: Oct. 19, 2023

Based on the marine magnetic anomalies identified in Argo Abyssal Plain offshore northwestern Australia, conceptual continent of Argoland must have rifted off Late Jurassic (∼155 Ma) and drifted northward towards SE Asia. Intriguingly, Asia there are no intact relics a major such as India, but instead region displays an intensely deformed, long-lived accretionary orogen that formed during more than 100 million years oceanic continental subduction. Within this orogen, fragments may represent parts Argoland. After accretion these fragments, was further deformed. We compiled orogenic architecture history post-accretionary deformation Asia, well NW Australian passive margin. Gondwana-derived blocks mega-units SW Borneo, Greater Paternoster, East Java, South Sulawesi, West Burma, Mount Victoria Land collectively These found between sutures with Triassic to Middle basins all pre-date break-up systematically restore within upper plate system above modern Sunda trench, use estimate where accreted at Sundaland (Eurasian) margin Cretaceous (∼110–85 Ma), subsequently reconstruct their tectonic transport back Australian-Greater Indian Our reconstruction shows originated northern Bird's Head east Wallaby-Zenith Fracture Zone west, south which it bordered India. show lithospheric fragment broke northwest Australia consisted multiple intervening basins, we here call Argopelago. up into Argopelago rifting Lhasa from Gondwana, were surrounded by similar Zealandia reconstructed Adria Mediterranean.

Language: Английский

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Temporal-spatial patterns of Mesozoic Paleo-Pacific and Tethyan supra-subduction systems in SE Asia: Key observations and controversies in Borneo and its surroundings

Earth-Science Reviews, Journal Year: 2024, Volume and Issue: 252, P. 104762 - 104762

Published: April 1, 2024

Language: Английский

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Plate tectonic cross-roads: Reconstructing the Panthalassa-Neotethys Junction Region from Philippine Sea Plate and Australasian oceans and orogens

Gondwana Research, Journal Year: 2023, Volume and Issue: 126, P. 129 - 201

Published: Sept. 29, 2023

The plate tectonic history of the Junction Region, which separated Panthalassa and Tethys realms, is notoriously challenging to reconstruct. region has been dominated by intra-oceanic subduction zones, led a sparsely preserved geological record because not only down-going plates but also overriding were lost subduction. Even though most lithosphere that was present in Region during Mesozoic subduction, orogenic records preserve sparse data provide information for reconstruction. Here we kinematic reconstruction back Jurassic, based on present-day circum-Philippine Sea Plate Australasian regions, paleomagnetic data. We comprehensive review oceanic architecture from Japan SW Pacific use systematic protocol restoration Jurassic. Based our reconstruction, propose Molucca formed as an Eocene back-arc basin behind north-dipping zone consumed Australian lithosphere. find Jurassic Philippines originated northern margin when formed. By placing mantle reference frames, identify multiple cases slab dragging suggest lithospheric collapse Izu-Bonin Mariana forearc extension may have trigger absolute motion change Hawaii-Emperor Bend. Finally, show there no need spontaneous initiation at trench. Instead, more likely forced through Pacific-Australia relative around 62 Ma. Subduction started along pre-existing had accommodated mostly transform since about 85

Language: Английский

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Breaking barriers to climate finance: Asymmetric nexus between green investment and energy innovation in Europe

Heliyon, Journal Year: 2024, Volume and Issue: 10(3), P. e25096 - e25096

Published: Jan. 26, 2024

Growing concerns regarding climate change and the necessity to shift towards a low-carbon economy have resulted in significant rise worth of green finance for developing energy technology. This growing emphasis on underscores urgency nuanced exploration asymmetric nexus between investment innovation Europe. The present article investigates relationship top ten European nations with highest (France, Netherlands, Germany, Italy, Spain, Denmark, Austria, Finland, UK, Sweden). Formerly, panel data methodologies were employed observe link despite absence an exclusive connection certain economies. On other hand, this study uses 'Quantile-on-Quantile' approach econometric estimation using annual from 2007 2022. unique methodology enables detailed specific analysis time-series interdependence every economy, providing valuable perceptions these variables. Investment renewable is as proxy investment, while energy-related patents represent innovation. employs quantile cointegration test assess variables long-run relationship. results indicate positive correlation many countries at points. Additionally, demonstrates that extent asymmetry varies across countries, stressing policymakers' need closely monitor fluctuations

Language: Английский

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Time to reconsider the enigmatic tail of eastern Paleo-Tethys: New insights from Borneo

Lithos, Journal Year: 2023, Volume and Issue: 442-443, P. 107089 - 107089

Published: Feb. 20, 2023

Language: Английский

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Triassic felsic magmatism in SE Peninsular Malaysia: Petrogenesis and geodynamic implications for the Eastern Paleotethyan tectonic transition

Lithos, Journal Year: 2023, Volume and Issue: 462-463, P. 107399 - 107399

Published: Oct. 30, 2023

Language: Английский

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Cretaceous magmatic arc in Hainan and the peri-South China Sea as evidenced by geochemical fingerprinting of granitoids in the region

Geoscience Frontiers, Journal Year: 2024, Volume and Issue: 15(5), P. 101866 - 101866

Published: May 11, 2024

Mesozoic magmatic rocks occur widely in the South China Block and are generally interpreted as manifestations of subduction Paleo-Pacific oceanic lithosphere beneath Asia. Subduction-driven magmatism southeast (SE) continued from Late Permian through Cretaceous with an inferred lull between 125 Ma 115 that is known literature "magmatic quiescence". We report in-situ zircon U–Pb ages, Hf–O whole-rock Sr–Nd isotopes, geochemistry granitoids on Hainan Island discuss their evolution within framework geodynamics SE China. recognize two main stages emplacement Hainan, first around 120 then 100–95 Ma, displaying high-K calc-alkaline, I-type geochemical affinities. Granites both age groups enriched LILE LREE, but depleted Nb, Ta, Ba, Sr, Eu. The granites have εHf(t) values –2.6 to 2.3 corresponding Hf crustal model ages (TDMC), ranging 0.79 Ga 1.03 Ga, δ18O 6.9 ‰ 7.7 ‰. Zircons –4.2 1.1 1.08 1.42 6.7 8.4 Increasing younger crystallization indicate addition more juvenile components reworking material into melt evolution. range –0.4 –4.1 –7.7 –4.0, respectively. calculated two–stage (T2DM) clusters 1.25 1.53 Ga. These isotopic data suggest magmas were produced by partial melting Mesoproterozoic metabasaltic rocks, which make up much crystalline basement southern Cathaysia block. characteristics resemble those arcs Circum–Pacific orogenic belts identical nearly coeval granitoid intrusions continental fragments Sea basin. interpret these Peri–South region remnants a once contiguous arc system bounded margin entire Southeast Our findings do not support existence episode quiescence geological record

Language: Английский

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Causes of Late Cretaceous subduction termination below South China and Borneo: Was the Proto-South China Sea underlain by an oceanic plateau?

EarthArXiv (California Digital Library), Journal Year: 2023, Volume and Issue: unknown

Published: May 31, 2023

The South China, Indochina, and Borneo margins surrounding the China Sea contain long-lived arcs that became inactive at approximately 85 Ma, even though an embayment of oceanic crust (the ‘Proto-South Sea’) remained in intervening region. This eventually subducted Cenozoic below Cagayan arc, while modern opened its wake. To investigate enigmatic cessation Mesozoic subduction Borneo, we studied a fragment overlyinƒg trench-fill sediments accreted to NW during final stages subduction. Based on radiolarian biostratigraphy cherts overlying pillow basalts detrital zircon geochronology trench-fill, constrained minimum age accretion 40 Ma. shows was not related ridge Geochemical analysis revealed enriched mid-ocean basalt signature comparable plateaus. Using paleomagnetism, show this part Izanagi Plate but plate ‘Pontus’ Plate) separated from by zone. Ma geochemistry, suggest stopped when plateau entered trench, eastern margin with active. We how our findings offer opportunities restore configurations Panthalassa-Tethys junction

Language: Английский

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Multiple stages of continental rifting in Eastern Peninsular Malaysia: new insights from Jurassic–Cretaceous granitoids

Journal of the Geological Society, Journal Year: 2023, Volume and Issue: 180(5)

Published: June 19, 2023

Mesozoic granitoids in Peninsular Malaysia provide crucial information on the temporal–spatial relationship between Tethyan and Palaeo-Pacific domains. This paper presents new ages geochemical data for newly identified Jurassic–Cretaceous granites meta-granites from East Malaya. These can be divided into three groups. Group 1 consists of high-K calc-alkaline granodiorites (171–162 Ma) with variable ε Nd ( t ) values −7.4–+0.5, zircon Hf −7.4–+8.6, high initial ratios 206 Pb/ 204 Pb (20.04–20.65), 207 (15.73–15.79) 208 (39.80–40.20). The melting metasedimentary rocks a juvenile mafic component formed samples. 2 granite porphyries c. 131 A-type affinities 3 granitic gneisses 130 I-type share similar (−7.2 to −5.5), (−10.1–+6.5), (18.81–19.02), (15.71–15.77) (38.95–39.59). Although samples were derived an ‘ancient’ meta-mafic source region, shows evidence involvement component. All these are akin Permian–Triassic igneous Eastern during multiple stages continental rifting response slab rollback pulses rather than by evolutionary processes. Supplementary material : Data Middle Jurassic–Early Cretaceous Malaya available at https://doi.org/10.6084/m9.figshare.c.6689085 Thematic collection: article is part Cenozoic tectonics, landscape climate change collection at: https://www.lyellcollection.org/topic/collections/mesozoic-and-cenozoic-tectonics-landscape-and-climate-change

Language: Английский

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U-Pb zircon ages and petrogeochemistry and tectonic implications of gabbro and granite in southwest Lahad Datu area of Sabah, Malaysia

Acta Oceanologica Sinica, Journal Year: 2024, Volume and Issue: 43(2), P. 94 - 110

Published: Feb. 1, 2024

Language: Английский

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