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

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，我研究了乌克兰顿涅茨盆地卡利诺沃剖面和中国扬子地台中地剖面跨越莫斯科/卡西莫维亚边界的高分辨率有孔虫生物地层学。在卡利诺沃剖面中，以下12个石灰岩覆盖检查莫斯科-卡西莫夫边界区间：N_2、N_3、N_3^1、N_3^2、 N_3^3、N_5^1、O_1、O_1^2、O_2、O_3 和 O_4 中发现了典型的晚莫斯科 Fusuline 属，例如 Taitzehoella 和 Fusulina，产生 Quasifusulinoides 和原始 Protritivcites。最近的莫斯科时代N_3^3记录了与P类似的Protriticites的出现。 pseudomontiparus 和/或 P. subschwagerinoides，并且可能已经属于传统的早期卡西莫夫阶，主要由 Obsoletes 和 Quasifusulinoides 以及罕见的原始 Montiparus 组成，该水平可能与传统的早期部分、中期卡西莫夫阶相关。富含典型的Montiparus，并且可归属于卡西莫夫中部的传统，因此，是传统的基地。卡西莫夫系的牙形刺物种可以位于 N_3-N_3^3 区间内的某个位置，在顿涅茨，卡西莫夫系基部的当前潜在标记牙形刺物种首先出现在 O_1 中，因此，该水平比其高几个沉积周期。卡西莫夫系的传统基地。在中地段最新的莫斯科-卡西莫夫系中，建立了五个扶苏线带：按升序排列，它们是是 Fusulinella-Fusulina、Protriticites sp. B、Montiparus 和 Triticites 区域，其中 Protriticites sp. 记录了在其螺壳中具有细孔的原始 Protriticites。在 Protriticites sp. 中发现了明显粗糙的穿孔，与原始的角质层相当。中地剖面卡西莫夫阶的底部几乎与 Protriticites sp. A 区和 Protriticites sp. Less 的边界重合。

项目成果

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• 发表时间: 2006
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