BURROWS OF THE POLYCHAETE PERINEREIS AIBUHIUTENSIS ON A TIDAL FLAT OF THE YELLOW RIVER DELTA IN CHINA: IMPLICATIONS FOR THE ICHNOFOSSILS POLYKLADICHNUS AND ARCHAEONASSA

BURROWS OF THE POLYCHAETE PERINEREIS AIBUHIUTENSIS ON A TIDAL FLAT OF THE YELLOW RIVER DELTA IN CHINA: IMPLICATIONS FOR THE ICHNOFOSSILS POLYKLADICHNUS AND ARCHAEONASSA
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中国黄河三角洲潮滩上的围沙多毛类洞穴:对多角兽化石和古生化石的启示

DOI:
10.2110/palo.2018.105
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发表时间:
2019-05
期刊:
影响因子:
1.6
通讯作者:
Song Huibo
Song Huibo
中科院分区:
地球科学4区
文献类型:
--
作者:
Wang Yuanyuan;Wang Xueqin;Uchman Alfred;Hu Bin;Song Huibo

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摘要:中国黄河三角洲滩涂中存在丰富的沙蚕 (Perinereis aibuhitensis) 产生的生物沉积构造。围沙蚕的洞穴可见为垂直的管子和板状核心中不规则的绳索。通过 X 射线照相、计算机断层扫描和 VGStudio MAX 对岩心进行研究,以获得洞穴及其内部结构的三维图像。洞穴垂直于具有多个分支的陡峭倾斜的 Y 形管。它们被认为是痕迹化石Polykladichnus的类似物。一些类似排水沟的表面痕迹与古生古生物的痕迹化石相似。沙围沙蚕的洞穴和踪迹主要出现在混合滩地,较少出现在泥滩或沙滩。一些类似的化石洞穴和踪迹(Polykladichnus、Archaeonassa)可能大量出现,可以标记潮间带的位置。
Abstract: Abundant biogenic sedimentary structures produced by Perinereis aibuhitensis (formerly Nereis) occur in tidal flats of the Yellow River Delta in China. The burrows of Perinereis are visible as vertical tubes and irregular strings in slabbed cores. The cores were studied by X-ray radiography, computed tomography and VGStudio MAX to obtain three-dimensional images of the burrows and their inner structure. The burrows are vertical to steeply oblique, Y-shaped tubes with multiple branches. They are considered as analogues of the trace fossil Polykladichnus. Some gutter-like surface traces are similar to the trace fossil Archaeonassa. Perinereis burrows and trails occur mainly in the mixed flat, less frequently in the mud flat or sand flats. Potentially abundant occurrences of some analogous fossil burrows and trails (Polykladichnus, Archaeonassa) could mark position of the intertidal zone.
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