DOI: 10.1016/j.gloplacha.2012.10.003
论文题名: The Alpar canyon system in the Pannonian Basin, Hungary - its morphology, infill and development
作者: Juhász G. ; Pogácsás G. ; Magyar I. ; Hatalyák P.
刊名: Global and Planetary Change
ISSN: 0921-8352
出版年: 2013
卷: 103, 期: 1 起始页码: 174
结束页码: 192
语种: 英语
英文关键词: Deep canyons
; Lacustrine setting
; Late-neogene
; Pannonian basin
; Tectonic vs. Climatic control
Scopus关键词: Climatic controls
; Deep canyons
; Lake-level variations
; Late-neogene
; Pannonian basin
; Pannonian Basin , Hungary
; Seismic profiles
; Strike-slip fault systems
; deep canyons
; Fluvial sediment
; Late-Neogene
; Climate change
; Lakes
; Landforms
; Sedimentology
; Sediments
; Strike-slip faults
; Structural geology
; Tectonics
; Computer integrated manufacturing
; climate change
; geomorphology
; lacustrine deposit
; Miocene
; succession
; tectonics
; transgression
; uplift
; canyon
; fluvial deposit
; incised valley
; infill
; shelf break
; shoreline
; strike-slip fault
; topographic mapping
; Pannonian Basin
英文摘要: Giant incised canyons were recently recognized in Late-Miocene post-rift sediments in the central part of the Pannonian Basin. Though not connected to the world seas, Lake Pannon shows significant signs of relative lake level variations controlled by tectonics and climate changes. The incision surface of the Alpar canyon system is connected to SB Pa-4 (6.8 Ma sensu Vakarcs, 1997), earlier reported to represent a significant relative base-level fall in the basin, however, debated recently. Incised several hundred meters in the preexisting substrate, the individual canyon valleys of the Alpar canyon system are enormous in size and display a multi-story nature. They loose topographic expression headwards and basinward. Widths of individual valleys range from 5 to 10 km, with smaller tributaries. In the study area several adjacent canyon valleys can be seen on seismic profiles. The valley depth is greatest near their confluence, where a major trunk valley (600-700 m deep) was formed by eroding most of the Upper Miocene succession. The canyons are filled with clay marls. They are incised into an extremely thick aggrading deltaic complex and are overlain by fluvial sediments, suggesting a major transgression in between. The Late Miocene Alpár canyon system developed on the southern margin of the Mid-Hungarian Mobile Belt, the latter is characterized by NE-SW oriented fold axis and NE-SW oriented left lateral strike-slip faults. The canyon system coincides with a large releasing bend and/or extensional duplex of the Paks-Szolnok strike-slip system being active as sinistral during the Late Miocene. Presumably, the formation of the deep canyons was generated by the close interaction of several factors and events in space and time, among them tectonic uplift forced relative base-level fall, the reactivation and bending/duplexing of a strike-slip fault system located near the coeval zone of the lake shoreline and shelf edge, and the possible change of sediment supply carried by overfed rivers. © 2012 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878252933&doi=10.1016%2fj.gloplacha.2012.10.003&partnerID=40&md5=4a4c64b33b214b5a7e8635db358ab809
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11258
Appears in Collections: 全球变化的国际研究计划
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作者单位: MOL Group, Budapest, Hungary
Recommended Citation:
Juhász G.,Pogácsás G.,Magyar I.,et al. The Alpar canyon system in the Pannonian Basin, Hungary - its morphology, infill and development[J]. Global and Planetary Change,2013-01-01,103(1).