Are There Restrictions Related to the Presence of Land Plants for Reconstructing Rivers of Different Categories?

IF 0.7 4区 地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS Lithology and Mineral Resources Pub Date : 2023-04-18 DOI:10.1134/S0024490223010054
A. V. Maslov, O. Yu. Melnichuk
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Abstract

The article analyzes the distribution of datapoints of individual and averaged mudstones samples from almost 40 sedimentary successions of the Neoproterozoic–Ordovician (epoch lacking land plants) and the Devonian–Holocene (time of the appearance and abundance of land plants—“green epoch”) in the (La/Yb)N–Eu/Eu*, (La/Yb)N–(Eu/Sm)N, and (La/Yb)N–Th diagrams with classification fields of the silty–pelitic particulate matter in the estuary of different-category modern rivers. No fundamental differences between the “green epoch” and pre-Silurian rivers were revealed. In combination with other data, the above fact suggests the following conclusion: since the terrestrial vegetation is absent (and not only in the Neoproterozoic–Ordovician), the categories of rivers, which drained different (in area and composition) catchment areas and transported the fine-grained particulate material to the shelf zones were not fundamentally different from those at present.

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不同类型河流改造中陆生植物的存在是否有限制?
本文分析了新元古代—奥陶系(缺乏陆生植物的时代)和泥盆纪—全新世(陆生植物出现和丰度的时间—“绿色时代”)近40个沉积序列中单个和平均泥岩样品在(La/Yb)N - Eu/Eu*、(La/Yb)N - (Eu/Sm)N和(La/Yb)N - th图及不同类型现代河流河口粉砂质泥质颗粒分类场中的数据点分布。“绿色时代”和前志留纪河流之间没有根本的区别。结合其他资料,上述事实表明:由于陆生植被的缺失(不仅是新元古代—奥陶纪),在不同(面积和组成)集水区排水并将细粒颗粒物质输送到陆架带的河流种类与现在并没有本质上的区别。
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来源期刊
Lithology and Mineral Resources
Lithology and Mineral Resources 地学-地球化学与地球物理
CiteScore
1.30
自引率
37.50%
发文量
29
审稿时长
>12 weeks
期刊介绍: Lithology and Mineral Resources is an international peer reviewed journal that publishes articles on a wide range of problems related to the formation of sedimentary rocks and ores. Special attention is given to comparison of ancient sedimentary rock and ore formation with present-day processes. The major part of the journal is devoted to comparative analysis of sedimentary processes on the continents and in oceans, as well as the genetic aspects of the formation of sedimentary and hydrothermal–sedimentary mineral resources. The journal welcomes manuscripts from all countries in the English or Russian language.
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