globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.10.018
论文题名:
Facies architecture and palaeoenvironmental implications of the upper Cretaceous (Santonian) Csehbánya formation at the Iharkút vertebrate locality (Bakony Mountains, Northwestern Hungary)
作者: Botfalvai G.; Haas J.; Bodor E.R.; Mindszenty A.; Osi A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 441
起始页码: 659
结束页码: 678
语种: 英语
英文关键词: Anastomosing river ; Csehbánya Formation ; Fluvial deposits ; Sedimentology ; Upper Cretaceous ; Vertebrates
英文摘要: The Csehbánya Formation (Santonian), exposed in the Iharkút open-pit, Bakony Mountains, Hungary, is made up of a cyclic alternation of conglomerate, sandstone, and variegated siltstone and clay deposited in a fluviolacustrine environment. As a result of continuous excavation since 2002 it has yielded rich and diverse continental vertebrate and plant assemblages. A facies and architectural analysis of the Csehbánya Formation at this location identified four main lithofacies associations with eight subtypes consisting of (1) lenticular sandstones representing river channels, (2) conglomerates with sandstone (coarse grained likewise representing channel deposits), (3) heterolithic-channel fill (high density flash flow deposits) (4) splay sandstones produced by crevasse splays, (5) dark sandy siltstone (small-scale stagnant pool deposits with high organic content), (6) greenish-grey claystone (deposits of shallow lakes and ponds), (7) reddish (moderately drained) paleosols, and (8) yellowish, mottled (hydromorphic) paleosols.The sedimentological investigations revealed that the terrestrial deposits exposed by the Iharkút open-pit were formed in an anastomosing fluvial system because: (i) the alluvial architecture is characterized by large proportion of overbank deposits encasing the channel sandstone bodies, (ii) the ribbon shaped sandstone bodies are dominant, (iii) cross-bedding and lateral accretion are almost completely absent in the channel fill deposits and (iv) the sandstone bodies are clearly isolated from each other, embedded in floodplain sediments, suggesting multiple co-existing channels.The most important vertebrate fossil site (SZ-6) was examined in special detail because it shows peculiar lithological features. The layers richest in fossils (Unit 1) of SZ-6 site are interpreted as a lag deposit formed during an episodic high density flash flood event representing a relatively short time interval, i.e., probably within a single rainy season. © 2015 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68633
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: Eötvös Loránd University, Department of Physical and Applied Geology, Pázmány Péter sétany 1/c, Budapest, Hungary; MTA-ELTE Lendület Dinosaur Research Group, Pázmány Péter sétany 1/c, Budapest, Hungary; MTA-ELTE Geological, Geophysical and Space Science Research Group, Pázmány Péter sétany 1/c, Budapest, Hungary; Geological and Geophysical Institute of Hungary, Stefánia út 14, Budapest, Hungary; Eötvös Loránd University, Department of Palaeontology, Pázmány Péter sétany 1/c, Budapest, Hungary

Recommended Citation:
Botfalvai G.,Haas J.,Bodor E.R.,et al. Facies architecture and palaeoenvironmental implications of the upper Cretaceous (Santonian) Csehbánya formation at the Iharkút vertebrate locality (Bakony Mountains, Northwestern Hungary)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,441
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Botfalvai G.]'s Articles
[Haas J.]'s Articles
[Bodor E.R.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Botfalvai G.]'s Articles
[Haas J.]'s Articles
[Bodor E.R.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Botfalvai G.]‘s Articles
[Haas J.]‘s Articles
[Bodor E.R.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.