| 项目编号: | 1432970
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| 项目名称: | The Wegener Fault, Nares Strait: Myth or Reality? |
| 作者: | Jane Gilotti
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| 承担单位: | University of Iowa
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| 批准年: | 2013
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| 开始日期: | 2014-04-01
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| 结束日期: | 2017-03-31
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| 资助金额: | USD34637
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | wegener fault
; san andreas fault
; known left-lateral strike-slip fault
; nares strait
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| 英文摘要: | Plate tectonic arguments, primarily based on motion derived from Earth's magnetic anomalies, require that Greenland has moved about 250 kilometers northeast with respect to North America during the Paleocene (65 to 54 million years ago) on a continental transform that links the opening of the Arctic Ocean with the opening of Baffin Bay. Some scientists view the proposed transform as a myth, and indeed geophysical data show that the so-called Wegener Fault is not located in Nares Strait itself. The PI joins a helicopter-supported expedition led by the German Federal Institute for Geosciences and Natural Resources (BGR) to look for evidence of faulting onshore remote SE Ellesmere Island, Canada adjacent to the strait. The study area is on strike with known left-lateral strike-slip faults of Paleocene age to the north, which could link up to form the Wegener fault. Identifying the Wegener fault settles a long-standing tectonic problem and solidifies our understanding of the critical period of spreading in the Labrador Sea and opening of the Arctic Ocean. The results also provide an important case study of the complexity of geologic relationships along continental transform boundaries, which can be compared to processes at similar boundaries such as the San Andreas Fault. Research results will be shared with the Geological Survey of Canada, and will be disseminated through the geologic literature. In addition to the geologic goals of the project, the project is providing support for research infrastructure at the University of Iowa, as well as public outreach efforts, including those aimed at First Nations people who live near the field area. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97218
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Jane Gilotti. The Wegener Fault, Nares Strait: Myth or Reality?. 2013-01-01.
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