High-resolution foraminiferal biostratigraphy across the Moscovian/Kasimovian boundary

跨越莫斯科/卡西莫夫边界的高分辨率有孔虫生物地层学

• 批准号: 16540429
• 负责人: UENO Katsumi
• 金额: $ 2.37万
• 依托单位: Fukuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16540429/
• 关键词: foraminifera; fusulinoideans; Moscovian; Kasimovian; Carboniferous; biostratigraphy; correlation; faunal change; foraminifera; fusulinoideans; Moscovian; Kasimovian; Carboniferous; biostratigraphy; correlation; faunal change

In the present research, I studied high-resolution foraminiferal biostratigraphy across the Moscovian/Kasimovian boundary in the Kalinovo section of the Donets Basin, Ukraine, and the Zhongdi section of the Yangtze Platform, China.In the Kalinovo section, the following 12 limestones covering a Moscovian-Kasimovian boundary interval are examined : N_2, N_3, N_3^1, N_3^2, N_3^3, N_5^1, O_1, O_1^1, O_1^2, O_2, O_3, and O_4. In N_2, typical late Moscovian fusuline genera such as Taitzehoella and Fusulina are found. N_3 yields Quasifusulinoides and primitive Protritivcites, suggesting a latest Moscovian age. N_3^3 records the occurrence of Protriticites similar to P. pseudomontiparus and/or P. subschwagerinoides, and is probably already of traditional, early Kasimovian. O_1 is dominated by Obsoletes and Quasifusulinoides, together with rare, primitive Montiparus. This level is possibly correlated to the early part of the traditional, middle Kasimovian. O_2 is rich in typical Montiparus, and … More is assignable to the traditional, middle Kasimovian. In the Kalinovo section, therefore, the traditional base of the Kasimovian can be placed somewhere within the N_3-N_3^3 interval. In Donets, ldiognathodus sagittalis, a current potential marker conodont species for the base of the Kasimovian, occurs first in O_1. Thus, this level is several depositional cycles higher than the traditional base of the Kasimovian.In the latest Moscovian-Kasimovian of the Zhongdi section, five fusuline zones were established: in ascending order, they are the Fusulinella-Fusulina, Protriticites sp. A, Protriticites sp. B, Montiparus, and Triticites Zones. Of them, the Protriticites sp. A Zone records the occurrence of primitive Protriticites that bears fine perforations in its spirotheca. In contrast, advanced Protriticites with definitely coarse perforations comparable with rudimentary keriotheca are found in the Protriticites sp. B Zone. These lines of evidence suggest that the base of the Kasimovian in the Zhongdi section almost coincides with the boundary between the Protriticites sp. A Zone and Protriticites sp. B Zone. Less

在本研究中，我研究了托恩斯盆地的Kalinovo部分的高分辨率有孔虫生物学摄影，乌克兰的Kalinovo部分，乌克兰的Kalinovo部分和扬吉平台的中国宗教段，中国。在Kalinovo部分。 N_3^1，N_3^2，N_3^3，N_5^1，O_1，O_1^1，O_1^2，O_2，O_3，O_3和O_4。在N_2中，发现了典型的莫斯科省晚期熔融属属，例如Taitzehoella和Fusulina。 N_3产生准舒张素和原始的叉素，表明最新的莫斯科维亚时代。 N_3^3记录了与假单胞菌和/或P. subschwagerinoids类似的紫红石的发生，并且可能已经是传统的早期Kasimovian。 O_1由杂物和准舒张素和稀有的原始蒙蒂帕鲁斯（Montiparus）主导。这个水平可能与传统的中部卡西莫维亚人的早期相关。 O_2富含典型的蒙蒂帕鲁斯（Montiparus），并且……更多的人分配给了传统的中级卡西莫维安（Kasimovian）。因此，在Kalinovo部分中，可以将Kasimovian的传统基础放置在N_3-N_3^3间隔内。在捐赠者中，ldiognathodus sagittalis是卡西莫维亚底部的当前潜在标记牙形物种，首先出现在O_1中。这是该级别的几个沉积循环，高于Kasimovian的传统基础。在最新的中北部的莫斯科维亚 - 卡西莫维亚人中，建立了五个熔融区：按升序，它们是fusulinella fusulinella fusulinella fusulinella fusulinela fusuline sp。 A，垂体sp。 B，Montiparus和Triticites区。在其中，垂体sp。一个区域记录了原始的斜视的出现，其螺旋杆上带有精美的穿孔。相比之下，在紫红石sp中发现了与基本角膜相媲美的高级赤道石，具有明显粗糙的穿孔。 B区域。这些证据线表明，宗教段中的卡西莫维亚人的基础几乎与野公会sp之间的边界相吻合。一个区域和垂体sp。 B区域。较少的