Exploring the plutonic crust at a fast-spreading ridge:new drilling at Hess Deep

doi:10.2172/1248306

GSTDTAP > 地球科学

DOI	10.2172/1248306
报告编号	LLNL--TR-623455
来源ID	OSTI ID: 1248306
	Exploring the plutonic crust at a fast-spreading ridge:new drilling at Hess Deep
	Gillis, Kathryn M. [Univ. of Victoria, BC (Canada). School of Earth and Ocean Sciences]; Snow, Jonathan E. [Univ. of Houston, Houston, TX (United States). Earth & Atmospheric Sciences]; Klaus, Adam [Texas A & M Univ., College Station, TX (United States).
	2013-02-28
出版年	2013
页数	91
语种	英语
国家	美国
领域	地球科学
英文摘要	Integrated Ocean Drilling Program (IODP) Hess Deep Expedition 345 was designed to sample lower crustal primitive gabbroic rocks that formed at the fast-spreading East Pacific Rise (EPR) in order to test models of magmatic accretion and the intensity of hydrothermal cooling at depth. The Hess Deep Rift was selected to exploit tectonic exposures of young EPR plutonic crust, building upon results from ODP Leg 147 as well as more recent submersible, remotely operated vehicle, and near-bottom surveys. The primary goal was to acquire the observations required to test end-member crustal accretion models that were in large part based on relationships from ophiolites, in combination with mid-ocean ridge geophysical studies. This goal was achieved with the recovery of primitive layered olivine gabbros and troctolites with many unexpected mineralogical and textural relationships, such as the abundance of orthopyroxene and the preservation of delicate skeletal olivine textures.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6113
专题	地球科学
推荐引用方式 GB/T 7714	Gillis, Kathryn M. [Univ. of Victoria, BC ,Snow, Jonathan E. [Univ. of Houston, Houston, TX ,Klaus, Adam [Texas A & M Univ., College Station, TX . Exploring the plutonic crust at a fast-spreading ridge:new drilling at Hess Deep,2013.