罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义

马黎春

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罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义

马黎春

文章导航 > 沉积学报 > 2011 > 29(1): 125-133

马黎春. 罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义[J]. 沉积学报, 2011, 29(1): 125-133.

引用本文:

马黎春. 罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义[J]. 沉积学报, 2011, 29(1): 125-133.

MA Lichun. Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa[J]. Acta Sedimentologica Sinica, 2011, 29(1): 125-133.

Citation:

MA Lichun. Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa[J]. Acta Sedimentologica Sinica, 2011, 29(1): 125-133.

马黎春. 罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义[J]. 沉积学报, 2011, 29(1): 125-133.

引用本文:

马黎春. 罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义[J]. 沉积学报, 2011, 29(1): 125-133.

MA Lichun. Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa[J]. Acta Sedimentologica Sinica, 2011, 29(1): 125-133.

Citation:

MA Lichun. Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa[J]. Acta Sedimentologica Sinica, 2011, 29(1): 125-133.

罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义

马黎春

中国农业大学资源与环境学院土壤和水系北京100037

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通讯作者:
马黎春

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Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa

MA Lichun

Institute of Mineral Resources, Chinese Academy of Geological Sciences,Beijing 100037

More Information

Corresponding author: MA Lichun

摘要

摘要: 干盐湖蒸发岩沉积是干旱内陆封闭盆地的主要成盐模式，其地表盐壳沉积特征、蒸发盐类矿物具有明显的分带性。罗布泊干盐湖，保存了完整的“耳轮”型环状沉积模式和演化序列，在世界干盐湖中实属罕见。通过对罗布泊“大耳朵”干盐湖区多级环状亚沉积环境下发育的盐壳地貌、沉积结构、龟裂形态、矿物组成以及地下卤水的地表排泄情况进行地面调查和实地采样，探讨了不同“耳轮”环带盐壳地貌成因、相互承接关系和发展演变过程；并概述了蒸发盐盘不同沉积阶段沉积特征，及盐壳龟裂结构发育演化过程与地下水位埋深的关系。
- 罗布泊 /
- “大耳朵”干盐湖 /
- 盐盘 /
- 沉积特征 /
- 沉积环境
Abstract: The majority of presentday evaporite deposition occurs in arid closed continental basins in which the playa lake is most common. The distribution of evaporite minerals and sedimentary features of salt crust are usually zonal in a playa lake. The integrated zonal configuration is preserved well in the Lop Nor playa, which is represented by a series of concentric rings that closely resemble a great human ear in satellite images. This type of natural phenomenon is very rarely seen in a playa lake. The Lop Nor basin consists of a broad, flat salt plain, and salt crusts covering approximately 5,500 km2 with the lowest parts at 780 m above sea level. After investigating the fracture texture of salt crust, sedimentary structures, evaporite mineral composition, and the condition of groundwater brine discharge in the multicyclic "Great Ear" rings, we can discuss the origin of different salt crust types, the connection between adjacent concentric zones, and the evolutionary process of the concentric configuration of the "Great Ear" salt pans. This research also gives a general overview of the sedimentary features in different cycles of saltpan evaporite, as well as the relationship between the development of polygonal fissure structures of salt crust and the groundwater brine table. The types of saltcrust structure include polygon crack, welldeveloped honeycombshaped halite crusts, moundshaped pattern and plateshaped halite crusts. However, the sediment beneath the surface is typically saturated with concentrated brines and displacive evaporites. There is visual evidence of discharging groundwater in the numerous moist salt pans covering most of the salt plain, suggesting that the capillary fringe of the groundwater table is close to the surface of the salt pans.The development of salt crust structures were generally controlled by the groundwater table with a depth of < 2m in the Lop Nor playa. But it is also affected by many factors such as sediment permeability, brine density, evaporites, cracks and atmospheric conditions.
- Lop Nor basin /
- “Great Ear” /
- playa /
- salt pan /
- sedimentary features

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[1]	王启明. 渤中凹陷东南斜坡带大型湖底扇源汇系统耦合与沉积充填过程 . 沉积学报, 2024, (): -. doi: 10.14027/j.issn.1000-0550.2024.004
[2]	田纳新, 龚承林, 吴高奎, 朱一杰, 李军. 转换陆缘海底扇的沉积特征与沉积模式 . 沉积学报, 2023, 41(6): 1798-1809. doi: 10.14027/j.issn.1000-0550.2023.075
[3]	杨仁超, 李作福, 张学才, 慈兴华, 方旭庆, 李传华, 刘海宁. 异重流沉积研究进展与展望 . 沉积学报, 2023, 41(6): 1917-1933. doi: 10.14027/j.issn.1000-0550.2023.008
[4]	李文, 穆桂金, 林永崇, 张慧娟, 吴汪洋, 孙蕗. 罗布泊自生胶黄铁矿对磁性参数χ_ARM/SIRM指示意义的影响 . 沉积学报, 2022, 40(5): 1280-1288. doi: 10.14027/j.issn.1000-0550.2021.008
[5]	刘文栋, 钟大康, 孙海涛, 曾鑫耀, 梁雪祺, 胡欣, 李荣容, 彭思桥, 宋雨佳. 川西北中二叠统栖霞组沉积特征及古地貌响应 . 沉积学报, 2021, 39(5): 1275-1291. doi: 10.14027/j.issn.1000-0550.2020.050
[6]	张懿, 陈龙, 李建, 王东歌, 吴庆铭, 韦轶, 史强, 旷红伟, 柳永清, 廖志伟. 渝东北陡山沱组碳酸锰微生物岩沉积环境初探 . 沉积学报, 2021, 39(6): 1387-1405. doi: 10.14027/j.issn.1000-0550.2021.066
[7]	吕峻岭, 朱一杰, 夏瑞, 郑云柯, 刘晨虎, 冯文杰, 李国艳, 杜晓峰. 干旱型分支河流体系沉积特征与演化过程 . 沉积学报, 2020, 38(5): 994-1005. doi: 10.14027/j.issn.1000-0550.2019.101
[8]	顾志翔, 何幼斌, 彭勇民, 罗进雄, 刘小帆, 张锦, 聂鸿宇. 四川盆地下寒武统膏盐岩“多潟湖”沉积模式 . 沉积学报, 2019, 37(4): 834-846. doi: 10.14027/j.issn.1000-0550.2018.188
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罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义

马黎春

中国农业大学资源与环境学院土壤和水系北京100037

通讯作者: 马黎春

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2011-02-10

关键词:

罗布泊 /

“大耳朵”干盐湖 /

盐盘 /

沉积特征 /

沉积环境

摘要: 干盐湖蒸发岩沉积是干旱内陆封闭盆地的主要成盐模式，其地表盐壳沉积特征、蒸发盐类矿物具有明显的分带性。罗布泊干盐湖，保存了完整的“耳轮”型环状沉积模式和演化序列，在世界干盐湖中实属罕见。通过对罗布泊“大耳朵”干盐湖区多级环状亚沉积环境下发育的盐壳地貌、沉积结构、龟裂形态、矿物组成以及地下卤水的地表排泄情况进行地面调查和实地采样，探讨了不同“耳轮”环带盐壳地貌成因、相互承接关系和发展演变过程；并概述了蒸发盐盘不同沉积阶段沉积特征，及盐壳龟裂结构发育演化过程与地下水位埋深的关系。

English Abstract

Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa

MA Lichun

Institute of Mineral Resources, Chinese Academy of Geological Sciences,Beijing 100037

Corresponding author: MA Lichun

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2011-02-10

Keywords:

Abstract: The majority of presentday evaporite deposition occurs in arid closed continental basins in which the playa lake is most common. The distribution of evaporite minerals and sedimentary features of salt crust are usually zonal in a playa lake. The integrated zonal configuration is preserved well in the Lop Nor playa, which is represented by a series of concentric rings that closely resemble a great human ear in satellite images. This type of natural phenomenon is very rarely seen in a playa lake. The Lop Nor basin consists of a broad, flat salt plain, and salt crusts covering approximately 5,500 km2 with the lowest parts at 780 m above sea level. After investigating the fracture texture of salt crust, sedimentary structures, evaporite mineral composition, and the condition of groundwater brine discharge in the multicyclic "Great Ear" rings, we can discuss the origin of different salt crust types, the connection between adjacent concentric zones, and the evolutionary process of the concentric configuration of the "Great Ear" salt pans. This research also gives a general overview of the sedimentary features in different cycles of saltpan evaporite, as well as the relationship between the development of polygonal fissure structures of salt crust and the groundwater brine table. The types of saltcrust structure include polygon crack, welldeveloped honeycombshaped halite crusts, moundshaped pattern and plateshaped halite crusts. However, the sediment beneath the surface is typically saturated with concentrated brines and displacive evaporites. There is visual evidence of discharging groundwater in the numerous moist salt pans covering most of the salt plain, suggesting that the capillary fringe of the groundwater table is close to the surface of the salt pans.The development of salt crust structures were generally controlled by the groundwater table with a depth of < 2m in the Lop Nor playa. But it is also affected by many factors such as sediment permeability, brine density, evaporites, cracks and atmospheric conditions.

马黎春. 罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义[J]. 沉积学报, 2011, 29(1): 125-133.

引用本文:

马黎春. 罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义[J]. 沉积学报, 2011, 29(1): 125-133.

MA Lichun. Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa[J]. Acta Sedimentologica Sinica, 2011, 29(1): 125-133.

Citation:

MA Lichun. Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa[J]. Acta Sedimentologica Sinica, 2011, 29(1): 125-133.

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罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义

通讯作者:
马黎春

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Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa

Corresponding author: MA Lichun

计量

目录

罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义

中国农业大学资源与环境学院土壤和水系北京100037

通讯作者: 马黎春

English Abstract

Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa

Institute of Mineral Resources, Chinese Academy of Geological Sciences,Beijing 100037

Corresponding author: MA Lichun

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罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义

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Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa

Corresponding author: MA Lichun

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出版历程

目录

罗布泊盐湖“大耳朵”盐盘特征、成因及古环境意义

中国农业大学资源与环境学院土壤和水系北京100037

通讯作者: 马黎春

English Abstract

Sedimentary Features, Origin and Paleoenvironmental Significance of “Great Ear” Salt Pans in the Lop Nor Playa

Institute of Mineral Resources, Chinese Academy of Geological Sciences,Beijing 100037

Corresponding author: MA Lichun

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