重力流模型的验证：下始新世沉积物的案例研究（波兰东南部Tylmanowa遗址）

IF 0.5 4区地球科学 Q4 GEOLOGY

Baltica Pub Date : 2019-08-01 DOI:10.5200/baltica.2019.1.4

M. Górska

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引用次数: 3

摘要

在波兰外喀尔巴阡山脉的Tylmanowa遗址，描述了厚层、深水砂岩演替。喀尔巴阡山脉的这一部分主要由上侏罗统至古近系深水岩构成。Tylmanowa遗址层序由块状、波纹交叉层状、平面和槽状、水平层状和变形砂岩以及块状和水平层状泥岩组成。所有这些沉积物都来自重力流，这些重力流从盆地边缘向广阔的深海平原下坡前进。裸露的演替记录了从减速的泥石流到浊流的逐渐转变，这在最近对深水沉积物的研究中是非同寻常的。将该研究序列与经典的Bouma层序(Bouma 1962)、高密度浊积岩模型(Lowe 1982)、滑塌浊积岩模型(Ślączka, Thompson 1981)和混合事件层模型(Haughton et al. 2009)等广为人知的沉积模型进行了比较。

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Verification of gravity-flow models: case study from the Lower Eocene sediments (Tylmanowa site, SE Poland)

The thick-bedded, deep-water sandstone succession was described at the Tylmanowa site from the Polish Outer Carpathians. This part of the Carpathians is built mainly of the Upper Jurassic to Paleogene deep-water rocks. Succession at the Tylmanowa site is composed of massive, ripple-cross laminated, planar and trough cross-stratified, horizontally laminated and deformed sandstones as well as massive and horizontally laminated mudstones. All these sediments derived from gravity flows that prograde downslope from a basin margin towards the widespread abyssal plain. Exposed succession records the gradual transition from a decelerating debris flow to a turbidity current what is extraordinary in the recent investigations of deep-water sediments. The study succession has been compared with the widely known sediment models, such as: the classic Bouma Sequence (Bouma 1962), the high-density turbidite model (Lowe 1982), the fluxoturbidite model (Ślączka, Thompson 1981) and the hybrid event bed model (Haughton et al. 2009).

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来源期刊

Baltica 地学-地质学

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： BALTICA is an international periodical journal on Earth sciences devoted to the Baltic countries region and the Baltic Sea problems. This edition as a Yearbook is established in 1961 by initiative of Academician Vytautas Gudelis. Since 1993, an Editor-in-Chief of the journal became Academician Algimantas Grigelis. BALTICA is published biannually (in June and December) in cooperation with geoscientists of the circum-Baltic States. BALTICA is publishing original peer-reviewed papers of international interests on various Earth sciences issues. The particular emphasis is given to Quaternary geology, climate changes and development of ecosystems, palaeogeography, environmental geology, as well as stratigraphy, tectonics, sedimentology and surface processes with relevance to the geological history of the Baltic Sea and land areas. Journal emphasizes modern techniques, methodology and standards. The journal structure comprises original articles, short reviews, information, bibliography.