DOI: 10.1002/grl.50767
论文题名: Spatial variations in the composition of turbidites due to hydrodynamic fractionation
作者: Pyles D.R. ; Straub K.M. ; Stammer J.G.
刊名: Geophysical Research Letters
ISSN: 0094-8714
EISSN: 1944-8445
出版年: 2013
卷: 40, 期: 15 起始页码: 3919
结束页码: 3923
语种: 英语
英文关键词: composition
; fractionation
; mineralogy
; turbidites
; turbidity currents
Scopus关键词: Exponential decay functions
; Initial concentration
; Physical experiments
; Spatial variations
; Sub-surface imaging
; Subsurface reservoir
; turbidites
; Turbidity current
; Chemical analysis
; Deposits
; Fractionation
; Geochronology
; Mineralogy
; Minerals
; Ocean currents
; Sediment transport
; Fluid dynamics
; concentration (composition)
; geophysical method
; grain boundary
; hydrodynamics
; mineral resource
; provenance
; sampling
; settling behavior
; spatial variation
; turbidity
英文摘要: This study uses measurements from physical experiments to document turbidity currents, which are density currents composed of suspended sediment and water, to be effective at hydrodynamically fractionating minerals on the basis of grain density and grain shape alone, resulting in large-scale spatial variations in the composition of their deposits. While grain composition varies spatially, the population sampled at any one location is hydrodynamically equivalent. Spatial variations in composition of the deposits are modeled using exponential decay functions, which are based on initial concentration of grain types and their respective differences in settling velocity. We further discuss implications of this process for addressing practical geophysical problems, in which mineralogical distributions are important, such as provenance and geochronology studies, subsurface imaging, and predicting bulk properties of subsurface reservoirs. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881306130&doi=10.1002%2fgrl.50767&partnerID=40&md5=449d36af8bc7324482fdec63d06be8de
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5978
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Chevron Center of Research Excellence, Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois St., Golden, CO 80401, United States
Recommended Citation:
Pyles D.R.,Straub K.M.,Stammer J.G.. Spatial variations in the composition of turbidites due to hydrodynamic fractionation[J]. Geophysical Research Letters,2013-01-01,40(15).