DOI: 10.1016/j.epsl.2019.115933
论文题名: The demise of a ‘salt giant’ driven by uplift and thermal dissolution
作者: Kirkham C. ; Bertoni C. ; Cartwright J. ; Lensky N.G. ; Sirota I. ; Rodriguez K. ; Hodgson N.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 531 语种: 英语
中文关键词: dissolution
; Eastern Mediterranean
; Messinian Salinity Crisis
; salt basins
; salt recycling
; salt tectonics
英文关键词: Deposition
; Dissolution
; Recycling
; Sodium chloride
; 3-D seismic survey
; Eastern Mediterranean
; Fluvial deposits
; Messinian salinity crisis
; Re-precipitation
; Salt deposition
; Salt recycling
; Thermal dissolution
; Salt tectonics
英文摘要: The development of giant salt basins and eventual cessation of rapid salt deposition is founded on a delicate balance of salinity and heat fluxes within the water body governed by tectonic, climatic and eustatic change. The onset of salt deposition in such basins is widely accepted to be initiated by basin restriction. However, the processes that lead to the termination of salt deposition are comparatively unclear. Here we use an array of 2D and 3D seismic surveys to reveal that the truncation surface at the top of a thick salt sequence in the Eastern Mediterranean is far more extensive than previously thought. We show that uplift of the salt driven by deformation and thermal dissolution initiated the demise of the ‘salt giant’, even prior to the final dilution and emplacement of brackish Lago Mare and fluvial deposits. Progressive uplift of the salt through the thermocline and into the under-saturated epilimnion led to dissolution. We argue that dissolved salt was recycled and re-precipitation from the hypolimnion in the deepest sections of the basin contemporaneous with dissolution of halite from the shallower epilimnion. These findings explain how rapid basinwide salt deposition was brought to an end in the Eastern Mediterranean and present a novel process for sculpting the final architecture of a ‘salt giant’. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165077
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3 AN, United Kingdom; Geological Survey of Israel, 32 Yeshayahu Leibowitz Street, Jerusalem, 9692100, Israel; Institute of Earth Sciences, Hebrew University of Jerusalem, Israel; TGS, Dukes Court, Duke Street, Surrey, Woking, GU21 5BH, United Kingdom
Recommended Citation:
Kirkham C.,Bertoni C.,Cartwright J.,et al. The demise of a ‘salt giant’ driven by uplift and thermal dissolution[J]. Earth and Planetary Science Letters,2020-01-01,531