Physical properties, climate signals, and structural features of Tertiary sediments in the Southern McMurdo Sound (Antarctica) derived from downhole logging in the ANDRILL-SMS project
Physical properties, climate signals, and structural features of Tertiary sediments in the Southern McMurdo Sound (Antarctica) derived from downhole logging in the ANDRILL-SMS project
批准号:
45789299
负责人:
Dr. Thomas Wonik
金额:
$0.0万
依托单位国家:
德国
项目类别:
Infrastructure Priority Programmes
财政年份:
2007
资助国家:
德国
项目状态:
已结题
起止时间:
2006-12-31 至 2010-12-31
中文摘要
在国际ANDRILL钻探计划(ANDRILL)的框架内,在南部麦克默多海峡(罗斯海)钻探了1138 m深的岩芯钻孔SMS。南极新近纪冰盖变化、长期气候演变和麦克默多海峡构造历史的调查是该项目的主要目标。德国参与ANDRILL项目的一部分是对SMS钻孔进行广泛的地球物理测井。它提供了一个主要的基础,在整个项目的范围内回答了很多问题,包括约100名科学家。解释井下测井数据,除其他事项外,可以建立一个完整的岩性日志,描述钻探沉积物的岩石物理特征,确定沉积结构,并获得有关古气候条件的证据,在长达1900万年。钻孔中的地震实验可以将详细的地质信息与船载地震剖面联系起来。这样,当地的结果可以转化为空间信息,从而为了解罗斯海的构造结构提供了重要的贡献。
英文摘要
In the framework of the international ANtarctic DRILLing program (ANDRILL) the 1138 m deep core borehole SMS was drilled in the Southern McMurdo Sound (Ross Sea). The investigations of Antarctic Neogene ice sheet variations, of long-term climate evolutions and of the tectonic history of McMurdo Sound represent the main project aims. One part of the German participation in the ANDRILL project is the extensive geophysical logging of the SMS borehole. It delivers a main basis for answering a lot of questions in the scope of the whole project consisting of about 100 scientists. Interpreting the downhole logging data permits among other things to establish a complete lithological log, to characterize the drilled sediments petrophysically, to determine sedimentary structures and to get evidence about palaeoclimatic conditions during up to 19 Mio years. Seismic experiments in the borehole allow linking detailed geological information with shipborne seismic sections. This way, local results can be transformed into spatial information thus providing an important contribution to the understanding of the tectonic structure of the Ross Sea.
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