• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Quaternary geochronology >Evaluating the potential of tree-ring methodology for cross-dating of three annually laminated stalagmites from Zoolithencave (SE Germany)
【24h】

Evaluating the potential of tree-ring methodology for cross-dating of three annually laminated stalagmites from Zoolithencave (SE Germany)

机译：从ZoolithCave（SE德国）的三个每年层压石笋串交叉约会的树木方法的潜力

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Three small stalagmites from Zoolithencave (southern Germany) show visible laminae, which consist of a clear and a brownish, pigmented layer pair. This potentially provides the opportunity to construct precise chronologies by counting annual laminae. The growth period of the three stalagmites was constrained by the C-14 bomb peak in the youngest part of all three stalagmites and C-14-dating of a piece of charcoal in the consolidated base part of stalagmite Zoo-rez-2. These data suggest an age of AD 1970 for the top laminae and a lower age limit of AD 1973-1682 or AD 1735-1778. Laminae were counted and their thickness determined on scanned thin sections of all stalagmites. On stalagmites Zoo-rez-1 and -2, three tracks were measured near the growth axes, each separated into three sections at prominent anchor laminae (I, II, III). Each section was replicated three times (a, b, c). For Zoo-rez-3, only one track was measured. The total number of laminae counted for Zoo-rez-1 ranges from 138 to 177, for Zoo-rez-2 from 119 to 145, and for Zoo-rez-3 from 159 to 166. The numbers agree well with the range constrained by the bomb peak and the age of the charcoal, which supports the annual origin of the laminae. The replicated measurements of the different tracks as well as the three different tracks on the stalagmites Zoo-rez-1 and-2 were cross-dated using the TSAP-Win (R) tree-ring software. This software is very useful for cross-dating because it enables to insert or delete missing or false laminae as well as identifying common pattern by shifting the series back and forth in time. However, visual inspection of the thin sections was necessary to confirm detection of missing or false laminae by TSAP-Win (R). For all three Zoo-rez speleothems, crossdating of the mean lamina thickness series was not possible due to a missing common pattern. The cross-dating procedure results in three refined chronologies for the three Zoo-rez stalagmites of ranging from AD 1821-1970 (Zoo-rez-1)
机译：来自Zoolithcave（德国南部）的三个小石笋显示出可见的薄层，由透明和棕色的着色层对组成。这可能通过计算年度薄层来提供建立精确年表的机会。三个石笋的生长期受到所有三个石笋最小部分的C-14炸弹峰的约束，C-14在Stalagmite动物园REZ-2的综合基部中的一块木炭的C-14约会。这些数据表明了AD 1970年代Top Laminae的年龄和AD 1973-1682或AD 1735-1778的年龄限制。计数薄层，并确定所有石笋的扫描薄部分上的厚度。在石笋ZOO-REZ-1和-2上，在生长轴附近测量三个轨道，每个轨道在突出的锚定椎板（I，II，III）中分离成三个部分。每个部分都被复制三次（A，B，C）。对于动物园-REZ-3，仅测量一条轨道。从119到145的动物园-REZ-2计算的ZOO-REZ-1的薄层的总数为138至177，以及从159到166的动物园-REZ-3。数字对受限制的范围很好炸弹峰值和木炭的年龄，支持薄层的年起源。使用TSAP-Win（R）树圈软件，交叉定期的不同轨道的复制测量以及StalagMites Zoo-Rez-1和-2上的三个不同轨道。此软件对于跨约会非常有用，因为它可以通过在时间前后转换串行来插入或删除缺失或删除缺失或假覆盖。然而，薄部分的目视检查是通过TSAP-Win（R）确认缺失或假椎板的检测。对于所有三个动物园REZ Speleothems，由于缺失的常见模式，不可能的平均薄层厚度系列的交叉。交叉约会程序导致三个Zoog-Rez Stalagmites的三个精制的时间顺序从AD 1821-1970（动物园REZ-1）

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号