Preservation conditions of in situ root systems in Devonian sections of the middle Timan region

被引：7
|
作者：
Shumilov, I. Kh. [1 ]
机构：
[1] Russian Acad Sci, Inst Geol, Komi Sci Ctr, Ural Branch, Syktyvkar 167000, Russia
来源：
LITHOLOGY AND MINERAL RESOURCES | 2013年 / 48卷 / 01期
关键词：
Root System; Debris Flow; Devonian; Frasnian; Preservation Condition;
D O I：
10.1134/S0024490212050070
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Upper Devonian terrigenous red rocks in the middle Timan region enclose many paleopedocomplexes. Some sections include both paleosoil profiles with well-preserved coalified organic matter of in situ root systems and profiles lacking these features. Lithological investigations revealed that sedimentary beds are mostly composed of sand-to gravel-sized clay clasts (with small pebbles) and characterized by subaerial spasmodic proluvial genesis. The pelitic-silty bedded sediments accumulated in water basins with calm hydrodynamics are less widespread. It is established that organic matter of roots is preserved only if they are rapidly overlain by sediments of debris flows. DOI: 10.1134/S0024490212050070
引用
收藏
页码：65 / 73
页数：9
相关论文
共 15 条
12