کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8912967 | 1639923 | 2018 | 74 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Early to Mid-Miocene syn-extensional massive silicic volcanism in the Pannonian Basin (East-Central Europe): Eruption chronology, correlation potential and geodynamic implications
ترجمه فارسی عنوان
آتشفشانی سیلکیک عظیم سینتیک سدیم در طول حوضه پانونی (شرق-مرکز اروپا): زلزله فوران، پتانسیل همبستگی و پیامدهای ژئودینامیک
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
چکیده انگلیسی
The cumulative volume of the volcanic material formed during this 4â¯Myr long silicic volcanism is estimated to be >4000â¯km3, consistent with a significant ignimbrite flare-up event. Zircon crystallization ages indicate magma intrusions and formations of magma reservoirs in the continental crust for prolonged period, likely >1â¯Myr prior to the onset of the silicic volcanism accompanied with sporadic andesitic to dacitic volcanic activities. Mafic magmas were formed by melting of the thinned lithospheric mantle metasomatized previously by subduction-related fluids and emplaced at the crust-mantle boundary. They evolved further by assimilation and fractional crystallization to generate silicic magmas, which ascended into the pre-warmed upper crust and formed extended magma storage regions. Zircon Hf isotope and bulk rock Sr-Nd isotopic data indicate a sharp decrease of crustal and/or increase of asthenospheric mantle input after 16.2â¯Ma, suggesting that by this time the crust, and the lithospheric mantle was considerably thinned. This magmatism appears to have had a structural relationship to tectonic movements characterized by strike-slip and normal faults within the Mid-Hungarian Shear Zone as well as vertical axis block rotations, when the two microplates were juxtaposed. Our new zircon ages helped to refine the age of two major block-rotation phases associated with faulting. This volcanism shows many similarities with other rift-related silicic volcanic activities such as the Taupo Volcanic Zone (New Zealand) and the Basin and Range Province (USA).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Earth-Science Reviews - Volume 179, April 2018, Pages 1-19
Journal: Earth-Science Reviews - Volume 179, April 2018, Pages 1-19
نویسندگان
Réka Lukács, Szabolcs Harangi, Marcel Guillong, Olivier Bachmann, László Fodor, Yannick Buret, István Dunkl, Jakub Sliwinski, Albrecht von Quadt, Irena Peytcheva, Matthew Zimmerer,