A calibrated mammal scale for the Neogene of Western Europe.: State of the art
A calibrated mammal scale for the Neogene of Western Europe.: State of the art
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DOI：
10.1016/s0012-8252(00)00025-8
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发表时间：
2001-02-01
影响因子：
12.1
通讯作者：
Parés, JM
中科院分区：
文献类型：
--
作者：
Agustí, J;Cabrera, L;Parés, JM
本文提出了西欧新近纪的磁生物地层校准哺乳动物尺度。最初由 Mein [RCMNS 工作组活动报告 (1975)] 提出的哺乳动物新近纪 (MN) 单位已在选定的小型和大型哺乳动物类群首次出现的基础上重新定义。每个单元下边界的年代学主要是在过去十年中在一些西班牙盆地（埃布罗）发展出重要的磁生物地层框架之后建立的。卡拉塔尤德-达罗卡、瓦莱斯-佩内德斯。特鲁埃尔，财富。卡布里埃尔和瓜迪克斯-巴扎。对于中新世早期和中期（特别是 MN 1、MN 2 和 MN 3），作者还考虑了北高山前陆盆地发育的磁生物地层框架。提出了最后一个盆地的磁性地层数据的一些替代相关性，以便与伊比利亚盆地的数据达到更高程度的一致性。对于从中中新世到晚上新世的大部分新近纪，可以提出一个相当完善的磁核边界磁地层校准。另一方面，早中新世MN单元的年代界限仍然缺乏约束，原因如下：（1）缺乏充分研究的、连续的。厚的磁地层剖面：(2) 由于化石啮齿类动物群的相对同质性和持久性以及缺乏重大的大型哺乳动物扩散事件，因此难以确定该时间跨度的 MN 区域的边界。 MN 单位应用中出现的一些问题加强了考虑这些单位的古生物地理意义及其在广泛的地理区域中进行标定和关联的真正适用性的需要。 (C) 2001 Elsevier Science B.V. 保留所有权利。
A magnetobiostratigraphically calibrated mammal scale for the Neogene of Western Europe is presented in this paper. The Mammal Neogene (MN) units originally proposed by Mein [Report on activity RCMNS-Working groups (1975)] have been re-defined here on the basis of first appearances of selected small and large mammal taxa. The chronology of the lower boundaries of each unit had been established mostly after the significant magnetobiostratigraphic framework developed in the last decade in a number of Spanish basins: Ebro. Calatayud-Daroca, Valles-Penedes. Teruel, Fortune. Cabriel and Guadix-Baza. In the case of the early and middle Miocene (particularly, MN 1. MN 2 and MN 3), the authors have also taken into account the magnetobiostratigraphic framework developed in the North Alpine Foreland Basin. Some alternative correlations of the magnetostratigraphic data from this last basin are proposed in order to achieve a higher degree of consistence with the data from the Iberian basins. A quite well established magnetostratigraphic calibration of the MN boundaries can be proposed for most of the Neogene, from Middle Miocene to Late Pliocene. On the other hand, the chronological boundaries of the Early Miocene MN units are still poorly constrained due to: (1) scarcity of well-studied, continuous. thick magnetostratigraphic sections: (2) the difficulty in defining the boundaries of the MN zones for this time-span due to the relative homogeneity and persistence of the fossil rodent faunas and the absence of significant large mammal dispersal events. Some of the troubles which arise with the application of the MN units strengthen the need to take into account the palaeobiogeographical meaning of these units and their real suitability to dale and correlate through extensive geographic areas. (C) 2001 Elsevier Science B.V. All rights reserved.