Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1080/15324982.2013.841304 |
Paleoenvironmental Reconstruction from Palaeolake Sediments in the Area of Ouargla (Northern Sahara of Algeria) | |
Youcef, Fouzia1; Hamdi-Aissa, Baelhadj1,2 | |
通讯作者 | Youcef, Fouzia |
来源期刊 | ARID LAND RESEARCH AND MANAGEMENT
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ISSN | 1532-4982 |
EISSN | 1532-4990 |
出版年 | 2014 |
卷号 | 28期号:2页码:129-146 |
英文摘要 | The hyper-arid climate of Ouargla area (Northern Sahara of Algeria) is important in the field of the paleoenvironmental reconstitution. This paper investigates the importance of palaeolake sediments as significant terrestrial archives for studying Quaternary climate changes. Through morphological and mainly micromorphological investigations of the studied sites (Sabkha of Ouargla and palaeolake of Mellala), we noted the fluctuation of climate between arid and more humid conditions during Quaternary. Some pedofeatures have recorded these environmental changes. The studied calcareous crusting has a lacustrine origin when precipitations were more important. The clay coatings around the quartz grains indicate an old origin and different geochemical conditions that led to their dissolution. Lenticular gypsum crystals were formed from groundwater saturated with Ca2+ and SO42- ions. Calcite pseudomorphs after lenticular gypsum crystals indicate changes in local climatic parameters. Gypsum crusts can be explained by formation under wet climatic conditions in a lagoonal environment. Black and gray layers indicate evolution of organic matter at a wetter period. This paper highlights an unknown palaeolake which can be useful for the comprehension of the ecological past of the Sahara. The comparison between this palaeolake and other Saharan palaeolakes has allowed us to assign it to a probable active period between 10000 and 4000 years B. P. |
英文关键词 | Holocene micromorphology palaeolake paleoclimate paleoenvironment Sabkha Sahara soil |
类型 | Article |
语种 | 英语 |
国家 | Algeria |
收录类别 | SCI-E |
WOS记录号 | WOS:000337182400001 |
WOS关键词 | SOIL MICROMORPHOLOGY ; GYPSUM CRUSTS ; HOLOCENE ; AFRICA ; DESERT ; BASIN ; ENVIRONMENTS ; PEDOGENESIS ; ARCHAEOLOGY ; SALINITY |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/180855 |
作者单位 | 1.Univ KASDI Merbah Ouargla, Fac Sci Nat & Life, Lab Biogeochem Desert Areas, Ouargla 30000, Algeria; 2.Univ KASDI Merbah Ouargla, Fac Sci Nat & Life, Lab Protect Ecosyst Arid & Semiarid Areas, Ouargla 30000, Algeria |
推荐引用方式 GB/T 7714 | Youcef, Fouzia,Hamdi-Aissa, Baelhadj. Paleoenvironmental Reconstruction from Palaeolake Sediments in the Area of Ouargla (Northern Sahara of Algeria)[J],2014,28(2):129-146. |
APA | Youcef, Fouzia,&Hamdi-Aissa, Baelhadj.(2014).Paleoenvironmental Reconstruction from Palaeolake Sediments in the Area of Ouargla (Northern Sahara of Algeria).ARID LAND RESEARCH AND MANAGEMENT,28(2),129-146. |
MLA | Youcef, Fouzia,et al."Paleoenvironmental Reconstruction from Palaeolake Sediments in the Area of Ouargla (Northern Sahara of Algeria)".ARID LAND RESEARCH AND MANAGEMENT 28.2(2014):129-146. |
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