Present-day motion and deformation of the Colorado Plateau

Corn Kreemer, Geoffrey Blewitt, Richard A Bennett

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We analyze data from continuous GPS stations in the southwestern United States and present the first observations of a systematic motion of the Colorado Plateau region. Relative to a North America-fixed reference frame, westward velocities increase rapidly across the Wasatch fault system, which comprises the plateau's northwestern margin, but increase more gradually between the Great Plains and the Mojave Desert province. We detect no significant extension across most of the Rio Grande Rift, but extension could be as high as ∼0.5 mm yr-1 along its southernmost portion. We suggest that the motion between the plateau and stable continent may partly be accommodated instead across the Jemez Lineament. Only when we consider GPS velocities within the plateau's center, do the data support a rigid body rotation of 0.103° Ma-1 around a pole in the northern Rocky Mountains. We conclude that active extension has encroached into the plateau from both the east and west.

Original languageEnglish (US)
Article numberL10311
JournalGeophysical Research Letters
Volume37
Issue number10
DOIs
StatePublished - May 2010

Fingerprint

Colorado Plateau (US)
plateaus
plateau
Mojave Desert (CA)
Rocky Mountains (North America)
Rio Grande (North America)
GPS
continents
rigid structures
plains
margins
lineament
poles
stations
desert
mountain

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geophysics

Cite this

Present-day motion and deformation of the Colorado Plateau. / Kreemer, Corn; Blewitt, Geoffrey; Bennett, Richard A.

In: Geophysical Research Letters, Vol. 37, No. 10, L10311, 05.2010.

Research output: Contribution to journalArticle

@article{eb50888594904d5b8e924bb1df7cb19d,
title = "Present-day motion and deformation of the Colorado Plateau",
abstract = "We analyze data from continuous GPS stations in the southwestern United States and present the first observations of a systematic motion of the Colorado Plateau region. Relative to a North America-fixed reference frame, westward velocities increase rapidly across the Wasatch fault system, which comprises the plateau's northwestern margin, but increase more gradually between the Great Plains and the Mojave Desert province. We detect no significant extension across most of the Rio Grande Rift, but extension could be as high as ∼0.5 mm yr-1 along its southernmost portion. We suggest that the motion between the plateau and stable continent may partly be accommodated instead across the Jemez Lineament. Only when we consider GPS velocities within the plateau's center, do the data support a rigid body rotation of 0.103° Ma-1 around a pole in the northern Rocky Mountains. We conclude that active extension has encroached into the plateau from both the east and west.",
author = "Corn Kreemer and Geoffrey Blewitt and Bennett, {Richard A}",
year = "2010",
month = "5",
doi = "10.1029/2010GL043374",
language = "English (US)",
volume = "37",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "10",

}

TY - JOUR

T1 - Present-day motion and deformation of the Colorado Plateau

AU - Kreemer, Corn

AU - Blewitt, Geoffrey

AU - Bennett, Richard A

PY - 2010/5

Y1 - 2010/5

N2 - We analyze data from continuous GPS stations in the southwestern United States and present the first observations of a systematic motion of the Colorado Plateau region. Relative to a North America-fixed reference frame, westward velocities increase rapidly across the Wasatch fault system, which comprises the plateau's northwestern margin, but increase more gradually between the Great Plains and the Mojave Desert province. We detect no significant extension across most of the Rio Grande Rift, but extension could be as high as ∼0.5 mm yr-1 along its southernmost portion. We suggest that the motion between the plateau and stable continent may partly be accommodated instead across the Jemez Lineament. Only when we consider GPS velocities within the plateau's center, do the data support a rigid body rotation of 0.103° Ma-1 around a pole in the northern Rocky Mountains. We conclude that active extension has encroached into the plateau from both the east and west.

AB - We analyze data from continuous GPS stations in the southwestern United States and present the first observations of a systematic motion of the Colorado Plateau region. Relative to a North America-fixed reference frame, westward velocities increase rapidly across the Wasatch fault system, which comprises the plateau's northwestern margin, but increase more gradually between the Great Plains and the Mojave Desert province. We detect no significant extension across most of the Rio Grande Rift, but extension could be as high as ∼0.5 mm yr-1 along its southernmost portion. We suggest that the motion between the plateau and stable continent may partly be accommodated instead across the Jemez Lineament. Only when we consider GPS velocities within the plateau's center, do the data support a rigid body rotation of 0.103° Ma-1 around a pole in the northern Rocky Mountains. We conclude that active extension has encroached into the plateau from both the east and west.

UR - http://www.scopus.com/inward/record.url?scp=77953030724&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953030724&partnerID=8YFLogxK

U2 - 10.1029/2010GL043374

DO - 10.1029/2010GL043374

M3 - Article

AN - SCOPUS:77953030724

VL - 37

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 10

M1 - L10311

ER -