Maximum glacial advance and deglaciation of the Pinar Valley (Sierra de Gredos,Central Spain) and its significance in the Mediterranean context

David Palacios; Nuria Andres; Javier Marcos; Lorenzo Vazquez-Selem

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Maximum glacial advance and deglaciation of the Pinar Valley (Sierra de Gredos,Central Spain) and its significance in the Mediterranean context

机译：皮纳尔河谷（塞拉德格雷多斯，西班牙中部）最大的冰川前进和冰消作用及其在地中海环境中的意义

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Pinar Valley is located on the north side of Galana Peak (40° 15′ 21″ N; 5° 18′ 00″ W; 2564 m a.s.l.). Sierra de Gredos, in the center of the Iberian Peninsula. Surface exposure ages based on the in situ accumulation of ~(36)Cl were obtained from six moraine boulders and from three bedrock outcrops to investigate the timing of both the last local glacial maximum and the deglaciation. The oldest moraines, which probably overrode older glacial deposits, are coeval to the global Last Glacial Maximum. Subsequently the Pinar glacier underwent minor pulsations close to its maximum position, followed by general glacier retreat after -17-16 ka. Small cirque glaciers probably remained during the terminal Pleistocene but they had completely disappeared by 10 ka.

机译：皮纳尔河谷（Pinar Valley）位于加拉纳峰（Galana Peak）的北侧（北纬40°15′21″；西经5°18′00″； 2564 m a.s.l.）。 Sierra de Gredos，位于伊比利亚半岛的中心。从6个冰）巨石和3个基岩露头获得了基于〜（36）Cl的原位积累的表面暴露年龄，以研究最后一次局部冰期最大值和冰川消融的时间。最古老的冰rain可能覆盖了较旧的冰河沉积物，与全球最后的冰河极大期相提并论。随后，Pinar冰川在接近其最大位置的位置经历了轻微的脉动，然后在-17-16 ka之后进行了大范围的冰川撤退。在晚更新世末期可能仍留有小的圆形冰河，但到10 ka时它们已完全消失。

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《Geomorphology》 |2012年第2012期|51-61|共11页
作者
David Palacios; Nuria Andres; Javier Marcos; Lorenzo Vazquez-Selem;
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作者单位

Universidad Complutense de Madrid, Facultad de Geografia e Historia, Departamento de A.G.R. y Geografia Fisica, C/ Profesor Aranguren S/N, Ciudad Universitaria, 28040 Madrid, Spain;

Departamento de AG.R. y Geografia Fisica, Universidad Complutense, Madrid, Spain;

Departamento de AG.R. y Geografia Fisica, Universidad Complutense, Madrid, Spain;

Institute de Geografia, Universidad National Autonoma de Mexico, Mexico D.F., Mexico;

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正文语种 eng
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deglaciation; last glacial maximum; sierra de gredos; cosmogenic dating; late pleistocene;

机译：脱冰最后的冰川最大值;塞拉－德格雷多斯宇宙定年;晚更新世;

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Maximum glacial advance and deglaciation of the Pinar Valley (Sierra de Gredos,Central Spain) and its significance in the Mediterranean context

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