Climatic cycles inferred from the aminostratigraphy and aminochronology of Quaternary dunes and palaeosols from the eastern islands of the Canary Archipelago
Climatic cycles inferred from the aminostratigraphy and aminochronology of Quaternary dunes and palaeosols from the eastern islands of the Canary Archipelago
复制标题
根据加那利群岛东部岛屿第四纪沙丘和古土壤的氨基地层学和氨基年代学推断的气候循环
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
María R. Alonso
中科院分区：
文献类型：
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作者：
J. E. Ortiz;Trinidad de Torres;Y. Yanes;C. Castillo;J. Nuez;M. Ibáñez;María R. Alonso
采用氨基年代学和氨基地层学方法研究了加那利群岛以东岛屿（富埃特文图拉岛和兰萨罗特岛以及拉格拉西奥萨岛、蒙塔纳克拉拉岛和阿莱格兰萨岛）的第四纪风成沉积物。的程度外消旋/差向异构化的四种氨基酸（异亮氨酸，天冬氨酸，苯丙氨酸和谷氨酸）进行了测量，在土地蜗牛壳属Theba。这些氨基酸的年龄计算算法已经确定，允许这些存款的数字定年。八个Aminozones，每个定义沙丘/古土壤形成事件，已被区分和定年为48.6 ± 6.4，42.5 ± 6.0，37.8 ± 4.6，29.4 ± 4.8，22.4 ± 4.5，14.9 ± 3.6，11.0 ± 4.0和5.4 ± 1.1 ka BP，其中前五个定义了5-7 ka的周期。
Aminochronological and aminostratigraphical methods have been used to study the Quaternary aeolian deposits from the islands located east of the Canary Archipelago (Fuerteventura and Lanzarote islands and La Graciosa, Montaña Clara and Alegranza islets). The extent of racemisation/epimerisation of four amino acids (isoleucine, aspartic acid, phenylalanine and glutamic acid) was measured in land snail shells of the genus Theba. The age calculation algorithms of these amino acids have been determined to permit the numerical dating of these deposits. Eight Aminozones, each defining dune/palaeosol‐formation episodes, have been distinguished and dated at 48.6 ± 6.4, 42.5 ± 6.0, 37.8 ± 4.6, 29.4 ± 4.8, 22.4 ± 4.5, 14.9 ± 3.6, 11.0 ± 4.0 and 5.4 ± 1.1 ka BP, the first five of them defining cycles of 5–7 ka.