Quaternary aminostratigraphy of Mississippi Valley loess

Clark, Peter U.; Nelson, Alan R.; McCoy, William D.; Miller, Barry B.; Barnes, Diane K.

doi:10.1130/0016-7606(1989)101<0918:qaomvl>2.3.co;2

Cited by 39 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Beyond the limit of radiocarbon dating (>50 ka), amino acid racemization studies of gastropod shells have been used successfully to provide chronologies for loess units (Clark et al, 1989; Oches and McCoy, 2001; Marković et al, 2006; Grimley and Oches, 2015). Early, middle, and late Pleistocene loess units, where fossiliferous, can thus be reliably separated, which can be particularly important in regions lacking datable volcanic ashes or beds.…”

Section: Methodological Approaches To the Study Of Loessmentioning

confidence: 99%

Approaches and challenges to the study of loess—Introduction to the LoessFest Special Issue

et al. 2018

View full text Add to dashboard Cite

In September 2016, the annual meeting of the International Union for Quaternary Research’s Loess and Pedostratigraphy Focus Group, traditionally referred to as a LoessFest, met in Eau Claire, Wisconsin, USA. The 2016 LoessFest focused on “thin” loess deposits and loess transportation surfaces. This LoessFest included 75 registered participants from 10 countries. Almost half of the participants were from outside the United States, and 18 of the participants were students. This review is the introduction to the special issue forQuaternary Researchthat originated from presentations and discussions at the 2016 LoessFest. This introduction highlights current understanding and ongoing work on loess in various regions of the world and provides brief summaries of some of the current approaches/strategies used to study loess deposits.

show abstract

Section: Methodological Approaches To the Study Of Loessmentioning

confidence: 99%

Approaches and challenges to the study of loess—Introduction to the LoessFest Special Issue

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Wisconsin to at least the mid-Pleistocene, based on radiocarbon dating, thermoluminescence dating, and aminostratigraphy (Miller et al, 1986;Pye and Johnson, 1988;Clark et al, 1989). Bulk lower Mississippi River Valley loess has mostly quartz, dolomite, and feldspars; clay fractions of the loess are dominated by smectite with lesser amounts of kaolinite and mica (Ruhe, 1984;Miller et al, 1986;Pye and Johnson, 1988).…”

Section: Methodsmentioning

confidence: 99%

Bermuda solution pipe soils: A geochemical evaluation of eolian parent materials

Herwitz¹,

Muhs²

1995

Terrestrial and Shallow Marine Geology of the Bahamas and Bermuda

View full text Add to dashboard Cite

“…Amino acid geochronology has previously been applied to Quaternary deposits (up to $800 ka) in the Mississippi Valley region, providing valuable insights (Clark et al, 1989;Mirecki and Miller, 1994;Oches et al, 1996;Oches, 2001). In some studies, parabolic models have been used to represent glutamic acid racemisation and isoleucine epimerisation, although aspartic acid and phenylalanine do not appear to conform to parabolic racemisation models (Kaufman, 1992;Laabs and Kaufman, 2003).…”

Section: Amino Acid Geochronologymentioning

confidence: 99%

A multi‐proxy palaeoecological and palaeoclimatic record within full glacial lacustrine deposits, western Tennessee, USA

Grimley

Larsen

Kaplan

et al. 2009

J Quaternary Science

View full text Add to dashboard Cite

2009. A multi-proxy palaeoecological and palaeoclimatic record within full glacial lacustrine deposits, western Tennessee, USA.ABSTRACT: The Fulton Section, along the Mississippi River in western Tennessee, USA, is a 1 km continuous exposure ($20 m vertically) of Quaternary fluvial and lacustrine deposits, inset within Eocene sediments and buried by thick loess. Fossiliferous slackwater lake sediments record maximum aggradation during the last two major glaciations, with deposition between ca. 190-140 ka and 24-18 14 C ka BP, based on amino acid and radiocarbon chronology, respectively. During the onset of full glacial conditions (ca. 24-22 14 C ka BP), a relatively permanent shallow lake environment is indicated by ostracods, aquatic molluscs, and both pollen and macrofossils of aquatic plants. By 21.8 14 C ka BP, increasing emergent plants, amphibious gastropods (Pomatiopsis) and heavier d 18 O compositions suggest marsh-like conditions in a periodically drying lake. The surrounding uplands consisted of Picea-Pinus woodlands mixed with cool-temperate hardwoods (e.g. Quercus, Populus, Carya), grasses and herbs. More open conditions ensued ca. 20 14 C ka BP, with loess and slopewash gradually infilling the former lake by 18 14 C ka BP. Modern analogue analyses of ostracods and palaeontological evidence imply a full glacial climate similar to today's mixed-boreal zone in central Minnesota, USA, about 98C cooler in mean annual temperature than present-day western Tennessee.

show abstract

Quaternary aminostratigraphy of Mississippi Valley loess

Cited by 39 publications

References 0 publications

Approaches and challenges to the study of loess—Introduction to the LoessFest Special Issue

Approaches and challenges to the study of loess—Introduction to the LoessFest Special Issue

Bermuda solution pipe soils: A geochemical evaluation of eolian parent materials

A multi‐proxy palaeoecological and palaeoclimatic record within full glacial lacustrine deposits, western Tennessee, USA

Contact Info

Product

Resources

About