干旱区生态环境知识资源中心(Arid): Provenance, and environment context of pedogenic carbonates formation from MIS 3 to MIS 1 in the Teotihuacan Valley, Mexico

Arid

DOI	10.1016/j.quaint.2021.03.019
	Provenance, and environment context of pedogenic carbonates formation from MIS 3 to MIS 1 in the Teotihuacan Valley, Mexico
	Fernandez, Daisy Valera; Rebolledo, Elizabeth Solleiro; Sedov, Sergey; Pustovoitov, Konstantin
通讯作者	Fernández, DV
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2022
卷号	618 页码:52-69
英文摘要	Pedogenic carbonates are considered important indicators of past climatic changes. Their formation is due to calcite accumulation through evaporation processes in arid or semi-arid regions. Over time, secondary carbonate accumulation results in the development of calcic and petrocalcic horizons in soil profiles. In this study, we conducted an analysis of pedogenic carbonates as records of paleoenvironmental characteristics in the Teoti-huacan Valley, Basin of Mexico. Micromorphological, mineralogical, and geochemical characteristics of sec-ondary carbonates from three paleosol profiles (Cerro Gordo 1, Cerro Gordo 2, and Maseca 1) were analyzed. Pedogenic carbonates were characterized by irregular and variable carbonate crystal sizes, inclusions of soil particles, and dark or light micrite and microsparite laminations. Micromorphology and scanning electron mi-croscopy revealed weathered plagioclase minerals as a potential source of calcium for carbonate precipitation. The Sr-87/Sr-86 ratio of carbonate laminar crusts and nodules from the analyses pedons in the study area also indicated that rocks of the Transmexican Volcanic Belt were the principal source of Ca and Sr for carbonates, while contribution of a far-distance eolian input was minimal. The delta C-13 isotopic composition evidenced a mixture of C3 and C4 plants during the Pleistocene and a transition to a higher proportion of C4 vegetal cover during the Holocene. This agreed with an increase in modeled paleo-temperature from 10.9 degrees C to 13.7 degrees C based on O-18-temperature equations. Our results support those determined for the regional paleoenvironment during the Pleistocene, the Pleistocene-Holocene transition and Mid-Late Holocene.
英文关键词	Pedogenic carbonates Paleosols Ca2+ sources Stable isotopes Micromorphology
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000766524000001
WOS关键词	STABLE ISOTOPIC COMPOSITION ; CLIMATIC VARIABILITY ; LATE QUATERNARY ; LAKE CHALCO ; INDICATORS ; STRONTIUM ; RECORDS ; BASIN ; PALEOSOLS ; SEDIMENTS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394092
推荐引用方式 GB/T 7714	Fernandez, Daisy Valera,Rebolledo, Elizabeth Solleiro,Sedov, Sergey,et al. Provenance, and environment context of pedogenic carbonates formation from MIS 3 to MIS 1 in the Teotihuacan Valley, Mexico[J],2022,618:52-69.
APA	Fernandez, Daisy Valera,Rebolledo, Elizabeth Solleiro,Sedov, Sergey,&Pustovoitov, Konstantin.(2022).Provenance, and environment context of pedogenic carbonates formation from MIS 3 to MIS 1 in the Teotihuacan Valley, Mexico.QUATERNARY INTERNATIONAL,618,52-69.
MLA	Fernandez, Daisy Valera,et al."Provenance, and environment context of pedogenic carbonates formation from MIS 3 to MIS 1 in the Teotihuacan Valley, Mexico".QUATERNARY INTERNATIONAL 618(2022):52-69.