干旱区生态环境知识资源中心(Arid): Seasonal Bias in Soil Carbonate Formation and Its Implications for Interpreting High-Resolution Paleoarchives: Evidence From Southern Utah

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DOI	10.1029/2018JG004496
	Seasonal Bias in Soil Carbonate Formation and Its Implications for Interpreting High-Resolution Paleoarchives: Evidence From Southern Utah
	Huth, T. E.1,2; Cerling, T. E.1; Marchetti, D. W.3; Bowling, D. R.4; Ellwein, A. L.5; Passey, B. H.2
通讯作者	Huth, T. E.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
EISSN	2169-8961
出版年	2019
卷号	124 期号:3 页码:616-632
英文摘要	Pedogenic carbonate is commonly used as a paleoarchive, but its interpretation is limited by our understanding of its formation conditions. We investigated laminated soil carbonate rinds as a high-resolution paleoarchive in Torrey, Utah, USA, by characterizing and modeling their formation conditions. We compared late Holocene (<5ka) soil carbonate conventional (C and O) and clumped isotopes to modern soil environment and isotope measurements: soil CO2 partial pressure, soil temperature, soil moisture, delta C-13-soil CO2, delta O-18 precipitation, and delta O-18-soil water. Data unambiguously identified a strong summer seasonality bias, but modeling suggested soil carbonate formed several times throughout the year during infiltration events causing dissolution-formation reactions. This apparent discrepancy resulted from preferential preservation of calcite formed from the largest annual infiltration events (summer) overprinting previously formed calcite. Soil carbonate therefore formed predominantly due to changes in soil water content. As soil CO2 was at its annual maximum during soil carbonate formation, assuming uniformly low soil CO2 formation conditions for soil carbonate in estimating paleoatmospheric CO2 is likely not viable. Additionally, we showed modern summer delta C-13-soil CO2 and soil CO2 measurements could not produce a modeled delta C-13-soil carbonate consistent with late Holocene observations. We suggest using multiple lines of evidence to identify nonanalogous modern conditions. Finally, a nearly linear radiocarbon age model from a laminated rind showed that rinds can be used as a high-resolution paleoarchive if samples are from a single depth and the timing and conditions of soil carbonate formation can be constrained through time.
英文关键词	pedogenic carbonate Colorado Plateau seasonality soil monitoring carbon isotopes oxygen isotopes
类型	Article
语种	英语
国家	USA
开放获取类型	Green Published, Bronze
收录类别	SCI-E
WOS记录号	WOS:000464653200012
WOS关键词	CLUMPED ISOTOPE GEOTHERMOMETER ; PEDOGENIC CARBONATE ; FRACTIONATION ; TEMPERATURE ; CALIBRATION ; VEGETATION ; DYNAMICS ; CLIMATE ; DESERT ; BASIN
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217081
作者单位	1.Univ Utah, Dept Geol & Geophys, Salt Lake City, UT 84112 USA; 2.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA; 3.Western State Colorado Univ, Dept Nat & Environm Sci, Gunnison, CO USA; 4.Univ Utah, Dept Biol, Salt Lake City, UT 84112 USA; 5.Rocky Mt Biol Labs, Crested Butte, CO USA
推荐引用方式 GB/T 7714	Huth, T. E.,Cerling, T. E.,Marchetti, D. W.,et al. Seasonal Bias in Soil Carbonate Formation and Its Implications for Interpreting High-Resolution Paleoarchives: Evidence From Southern Utah[J],2019,124(3):616-632.
APA	Huth, T. E.,Cerling, T. E.,Marchetti, D. W.,Bowling, D. R.,Ellwein, A. L.,&Passey, B. H..(2019).Seasonal Bias in Soil Carbonate Formation and Its Implications for Interpreting High-Resolution Paleoarchives: Evidence From Southern Utah.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124(3),616-632.
MLA	Huth, T. E.,et al."Seasonal Bias in Soil Carbonate Formation and Its Implications for Interpreting High-Resolution Paleoarchives: Evidence From Southern Utah".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124.3(2019):616-632.