气候变化领域集成服务门户(CCPortal): Paleoenvironmental and paleoclimatic reconstruction of Cretaceous (Aptian-Cenomanian) terrestrial formations of Texas and Oklahoma using phyllosilicates

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DOI	10.1016/j.palaeo.2019.109491
	Paleoenvironmental and paleoclimatic reconstruction of Cretaceous (Aptian-Cenomanian) terrestrial formations of Texas and Oklahoma using phyllosilicates
	Andrzejewski K.; Tabor N.J.
发表日期	2020
ISSN	0031-0182
卷号	543
英文摘要	Clay mineralogy, chemistry, and stable oxygen and hydrogen-isotope compositions of 11 phyllosilicate samples from Cretaceous paleosol profiles were determined in order to evaluate Early-to-Late Cretaceous paleoenvironments and paleoclimates around north-central Texas and southern Oklahoma. Samples consist of mineralogical mixtures of illite, smectite, and kaolinite. Samples from the Albian Antlers Formation in southern Oklahoma and the Cenomanian Woodbine Formation are dominated by kaolinite, while the remaining samples are dominated by smectite and illite. Major element compositions of paleosol matrix materials are used to calculate CALMAG weathering values that range from 31 to 84 and correspond to Cretaceous paleoprecipitation estimates ranging from 270 to 1490 mm/yr. Paleosol phyllosilicate hydrogen and oxygen stable isotope values range from −50‰ to −67‰ to 18.5‰ to 21.7‰, respectively, and in conjunction with their respective mineral and chemical compositions, correspond to in-situ soil crystallization temperatures ranging from 26 ± 3 °C to 31 ± °C. Paleoprecipitation trends exhibit two marked increases in precipitation from the Early to Late Cretaceous, in the Albian Antlers Formation and Cenomanian Woodbine Formation. Stratigraphic intervals with phyllosilicates that yield cooler temperature estimates coincide with stratigraphic intervals with markedly higher precipitation estimates based on CALMAG values. Importantly, cool, high precipitation intervals correlate with periods of extensive shallow seas upon the North American craton. Comparison of Cretaceous temperature, precipitation and meteoric water estimates to modern analogs supports the presence of climates similar to modern tropical climates during the Cretaceous at subtropical or temperate paleolatitudes in what is now Texas and Oklahoma, consistent with general circulation models and energy balance models suggesting a pervading Cretaceous greenhouse. © 2020 Elsevier B.V.
英文关键词	Hydrogen isotopes; Oxygen isotopes; Paleosols; Phyllosilicates
语种	英语
scopus关键词	Albian; Cenomanian; clay mineral; Cretaceous; hydrogen isotope; oxygen isotope; paleoclimate; paleoenvironment; paleosol; phyllosilicate; Oklahoma [United States]; Texas; United States; Parthenocissus quinquefolia
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150595
作者单位	Roy M. Huffington Department of Earth Sciences, Southern Methodist University, Dallas, TX, United States
推荐引用方式 GB/T 7714	Andrzejewski K.,Tabor N.J.. Paleoenvironmental and paleoclimatic reconstruction of Cretaceous (Aptian-Cenomanian) terrestrial formations of Texas and Oklahoma using phyllosilicates[J],2020,543.
APA	Andrzejewski K.,&Tabor N.J..(2020).Paleoenvironmental and paleoclimatic reconstruction of Cretaceous (Aptian-Cenomanian) terrestrial formations of Texas and Oklahoma using phyllosilicates.Palaeogeography, Palaeoclimatology, Palaeoecology,543.
MLA	Andrzejewski K.,et al."Paleoenvironmental and paleoclimatic reconstruction of Cretaceous (Aptian-Cenomanian) terrestrial formations of Texas and Oklahoma using phyllosilicates".Palaeogeography, Palaeoclimatology, Palaeoecology 543(2020).