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Quaternary tephra from the Valles caldera in the volcanic field of the Jemez Mountains of New Mexico identified in western Canada

Journal Article · · Quaternary Research
DOI:https://doi.org/10.1017/qua.2018.139· OSTI ID:1495150
 [1];  [2];  [1];  [1];  [3];  [4];  [5];  [1];  [2];  [2]
  1. Univ. of Toronto, ON (Canada). Dept. of Earth Sciences
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of Lethbridge, Lethbridge, Alberta (Canada). Dept. of Geography
  4. Aberystwyth Univ., Wales (United Kingdom). Dept. of Geography and Earth Sciences
  5. U.S. Geological Survey, Menlo Park, CA (United States)
A fine-grained, up to 3-m-thick tephra bed in southwestern Saskatchewan, herein named Duncairn tephra (Dt), is derived from an early Pleistocene eruption in the Jemez Mountains volcanic field of New Mexico, requiring a trajectory of northward tephra dispersal of ~1500 km. An unusually low CaO content in its glass shards denies a source in the closer Yellowstone and Heise volcanic fields, whereas a Pleistocene tephra bed (LSMt) in the La Sal Mountains of Utah has a very similar glass chemistry to that of the Dt, supporting a more southerly source. Comprehensive characterization of these two distal tephra beds along with samples collected near the Valles caldera in New Mexico, including grain size, mineral assemblage, major- and trace-element composition of glass and minerals, paleomagnetism, and fission-track dating, justify this correlation. Two glass populations each exist in the Dt and LSMt. The proximal correlative of Dt1 is the plinian Tsankawi Pumice and co-ignimbritic ash of the first ignimbrite (Qbt1g) of the 1.24 Ma Tshirege Member of the Bandelier Tuff. Finally, the correlative of Dt2 and LSMt is the co-ignimbritic ash of Qbt2. Mixing of Dt1 and Dt2 probably occurred during northward transport in a jet stream.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
Natural Sciences and Engineering Research Council of Canada (NSERC); USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1495150
Report Number(s):
LA-UR--18-21041
Journal Information:
Quaternary Research, Journal Name: Quaternary Research Journal Issue: 2 Vol. 91; ISSN 0033-5894
Publisher:
University of Washington - Cambridge University PressCopyright Statement
Country of Publication:
United States
Language:
English

References (22)

The iron-titanium oxides of salic volcanic rocks and their associated ferromagnesian silicates journal January 1966
The Bandelier Tuff: A study of ash-flow eruption cycles from zoned Magma Chambers journal December 1966
The correlation between reduction in fission-track diameter and areal track density in volcanic glass shards and its application in dating tephra beds journal April 1995
Correlation of a Volcanic Ash bed in Pleistocene Deposits near Mount Blanco, Texas, with the Guaje Pumice Bed of the Jemez Mountains, New Mexico journal December 1972
40Ar–39Ar laser dating of tektites from the Cheb Basin (Czech Republic): Evidence for coevality with moldavites and influence of the dating standard on the age of the Ries impact journal January 2009
Eruption of reverse-zoned upper Tshirege Member, Bandelier Tuff from centralized vents within Valles caldera, New Mexico journal April 2014
Tephrochronology and its application: A review journal April 2011
Lead isotope ratios of volcanic glass by laser ablation inductively-coupled plasma mass spectrometry: Application to Miocene tephra beds in Montana, USA and adjacent areas journal December 2011
Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6 journal August 2011
MPI-DING reference glasses for in situ microanalysis: New reference values for element concentrations and isotope ratios: MPI-DING REFERENCE GLASSES journal February 2006
The 40 Ar/ 39 Ar age constraints on the duration of resurgence at the Valles caldera, New Mexico journal January 2007
40 Ar/ 39 Ar age constraints for the Jaramillo Normal Subchron and the Matuyama-Brunhes geomagnetic boundary journal February 1994
Explosive rhyolitic volcanism in the Jemez Mountains: Vent locations, caldera development and relation to regional structure journal January 1986
Geology and palaeontology of the Late Miocene Middle Awash valley, Afar rift, Ethiopia journal July 2001
The base of the Lystrosaurus Assemblage Zone, Karoo Basin, predates the end-Permian marine extinction journal March 2020
Low-Pressure Origin of High-Silica Rhyolites and Granites journal September 2013
The least-squares line and plane and the analysis of palaeomagnetic data journal September 1980
A Compilation of New and Published Major and Trace Element Data for NIST SRM 610 and NIST SRM 612 Glass Reference Materials journal June 1997
New ages for the climactic eruptions at Yellowstone: Single-crystal 40Ar/39Ar dating identifies contamination journal January 1998
Paleomagnetism of the Quaternary Bandelier Tuff: Implications for the tectonic evolution of the Española Basin, Rio Grande rift journal October 2011
Fission-track ages of late Cenozoic distal tephra beds in the Yukon Territory and Alaska journal November 1982
The oxygen fugacity of alkaline basalt and related magmas, Tristan da Cunha journal October 1968

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Tephra glass chemistry provides storage and discharge details of five magma reservoirs which fed the 75 ka Youngest Toba Tuff eruption, northern Sumatra journal October 2019

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