当前位置: X-MOL 学术Lethaia › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
From lagoons to mud mounds: palaeoecology of the Givetian to Frasnian stromatoporoids from the Holy Cross Mountains, Poland
Lethaia ( IF 1.5 ) Pub Date : 2020-11-27 , DOI: 10.1111/let.12410
Paweł Wolniewicz 1
Affiliation  

Stromatoporoids are an extinct group of Palaeozoic sponges that dominated the Devonian carbonate buildups. Although their general environmental requirements are known, their palaeoecological preferences at genus level are less studied. Seven stromatoporoid associations are distinguished within the Givetian (Middle Devonian; associations 1–3) and Frasnian (Upper Devonian; associations 4–7) of the Holy Cross Mountains in Poland, namely: (1) ArctostromaPseudoactinodictyon; (2) ActinostromaClathrocoilona; (3) AtelodictyonStachyodes; (4) AmphiporaPseudoactinodictyon; (5) stromatoporoid–microbialite bafflestone and bindstone; (6) Stictostroma–tabulate corals; and (7) HermatoporellaStictostroma. Stromatoporoid associations 1–3 are late Givetian to earliest Frasnian in age, while associations 4–7 are from the early to middle Frasnian. Associations 1 and 4 occupied calm and shallow parts of the carbonate platform, associations 2 and 7 thrived in more agitated waters, whereas other associations inhabited the deeper, low-energy environments and mud mounds of the platform slope. General stromatoporoid diversity at genus level is high, but individual associations consist of 4–10 genera. Stromatoporoids of associations 1–2 and 7 are overturned and/or broken/redeposited, and hydrodynamically unstable, sediment-laden facies dominate the stromatoporoid-bearing Devonian carbonate platform facies of the Holy Cross Mountains. Lagoonal and biohermal environments were inhabited by dendroid, laminar and domical stromatoporoids, whereas digitate shapes are common within the associations that formed in more agitated water. Most representatives of the order Clathrodictyida were prone to physical destruction and inhabited low-energy settings. Genera having skeleton supported by thick pillars or network of oblique elements, less affected by physical skeletal breakage, thrived in agitated waters.

中文翻译:

从泻湖到泥丘:来自波兰圣十字山脉的吉维提亚到弗拉斯尼亚层孔虫的古生态学

Stromatoporoids 是一个已灭绝的古生代海绵群,它们主导着泥盆纪碳酸盐岩的堆积。虽然它们的一般环境要求是已知的,但它们在属水平上的古生态偏好研究较少。七个层孔虫关联是在Givetian内区分(中泥盆;协会1-3)和弗拉斯(上泥盆;协会4-7)在波兰,即圣十字山的:(1)Arctostroma - Pseudoactinodictyon ; (2) ActinostromaClathrocoilona ; (3) AtelodictyonStachyodes ; (4)双孔- Pseudoactinodictyon ; (5) 层孔体-微生物岩挡板和粘结石;(6)Stictostroma –制表珊瑚;和 (7) HermatoporellaStictostroma. 层孔类群 1-3 是晚吉维世到最早的弗拉斯阶,而群 4-7 是从早到中弗拉斯阶。组合 1 和 4 占据了碳酸盐台地的平静和浅层,组合 2 和 7 在更动荡的水域中茁壮成长,而其他组合则栖息在更深、低能量的环境和台地斜坡的泥丘中。属水平的一般层孔虫多样性很高,但个体关联由 4-10 个属组成。组合 1-2 和 7 的层孔体被翻转和/或破碎/再沉积,并且流体动力学不稳定、沉积物相主导了圣十字山脉的含有层孔体的泥盆纪碳酸盐台地相。泻湖和生物礁环境居住着树状、层状和圆顶状层孔虫,而指状形状在更搅动的水中形成的协会中很常见。Clathrodictyida 目的大多数代表容易受到物理破坏并居住在低能量环境中。具有由粗柱子或斜元素网络支撑的骨骼的属,受物理骨骼断裂的影响较小,在动荡的水域中茁壮成长。
更新日期:2020-11-27
down
wechat
bug