Discrimination of eolian and pyroclastic-surge processes in the generation of cross-bedded tuffs, Jemez Mountains volcanic field, New Mexico

Geology ◽  
1991 ◽  
Vol 19 (5) ◽  
pp. 465 ◽  
Author(s):  
Gary A. Smith ◽  
Danny Katzman
Keyword(s):  
New Mexico ◽  
Volcanic Field ◽  
Pyroclastic Surge ◽  
Jemez Mountains

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

2018 ◽  
Vol 91 (2) ◽  
pp. 813-828 ◽  
Author(s):  
John A. Westgate ◽  
Giday WoldeGabriel ◽  
Henry C. Halls ◽  
Colin J. Bray ◽  
René W. Barendregt ◽  
...  
Keyword(s):  
New Mexico ◽  
Volcanic Field ◽  
Trace Element Composition ◽  
Early Pleistocene ◽  
Valles Caldera ◽  
Fine Grained ◽  
Jemez Mountains ◽  
Bandelier Tuff ◽  
Tephra Beds

AbstractA 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. 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.

Jemez Mountains volcanic field, New Mexico: Time term interpretation of the CARDEX seismic experiment and comparison with Bouguer gravity

1986 ◽  
Vol 91 (B6) ◽  
pp. 6175 ◽  
Author(s):  
K. H. Olsen ◽  
L. W. Braile ◽  
J. N. Stewart ◽  
C. R. Daudt ◽  
G. R. Keller ◽  
...  
Keyword(s):  
New Mexico ◽  
Volcanic Field ◽  
Bouguer Gravity ◽  
Seismic Experiment ◽  
Jemez Mountains ◽  
Time Term

scholarly journals Development of a Continental Volcanic Field: Petrogenesis of Pre-caldera Intermediate and Silicic Rocks and Origin of the Bandelier Magmas, Jemez Mountains (New Mexico, USA)

2007 ◽  
Vol 48 (11) ◽  
pp. 2063-2091 ◽  
Author(s):  
M. C. Rowe ◽  
J. A. Wolff ◽  
J. N. Gardner ◽  
F. C. Ramos ◽  
R. Teasdale ◽  
...  
Keyword(s):  
New Mexico ◽  
Volcanic Field ◽  
Jemez Mountains
Sign in / Sign up

Export Citation Format

Share Document