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第68期生态实验室“学术前沿报告”通知
2018-03-19

应高寒生态学与生物多样性重点实验室侯居峙研究员邀请,美国明尼苏达大学杜鲁斯分校地球环境科学系、大湖观测中心Erik Brown教授将前来青藏所交流并做学术报告。

报告题目:MexiDrill, The Basin of Mexico Drilling

报告人:Erik Brown    教    授

主持人:侯居峙    研究员

  间:2018年3月23日(星期五)14:00-16:00

  点:青藏高原研究所915会议室

 

报告人简介:

      美国明尼苏达大学杜鲁斯分研究生院院长、地球环境科学系与大湖观测中心终身教授。普林斯顿大学化学学士,麻省理工海洋学博士,巴黎第十一大学博士后。发表SCI论文125篇,发表论文的SCI总引用5600余次,单篇SCI引用最高380次,H-index为41。

 

报告摘要(Abstract):

In 2016 the MexiDrill field expedition recovered over 1000 m of sediment from the Basin of Mexico at the Lake Chalco drilling site on the outskirts of Mexico City. Three holes were drilled, reaching a maximum depth of 520 m. The upper ~300 m of the sequence is composed of lacustrine mud alternating with discrete tephra layers, underlain by a volcaniclastic sequence with basalt intercalations to approximately 512 m depth. Below the volcaniclastic- basalt unit, the deepest hole penetrated a colluvial breccia unit.  Triple core recovery with offset core intervals in the lacustrine unit provided core overlap that allowed us to create a composite sequence for continuous paleoenvironmental reconstructions for the past several hundred kyr. The Chalco record is thus among the longest continuous climate records from tropical North America, and it will help to understand millennial scale variability, the climate during past interglacials and the relationships between rates of climate change, ecosystem response, and biodiversity.

欢迎各位老师和同学参加!

高寒生态学与生物多样性重点实验室