Evidence for a Single Holocene Paleoseismic Event on the Pajarito Fault, Northern New Mexico
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F25%3A00618662" target="_blank" >RIV/67985891:_____/25:00618662 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.21663/EEG-D-24-00051" target="_blank" >https://doi.org/10.21663/EEG-D-24-00051</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21663/EEG-D-24-00051" target="_blank" >10.21663/EEG-D-24-00051</a>
Alternative languages
Result language
angličtina
Original language name
Evidence for a Single Holocene Paleoseismic Event on the Pajarito Fault, Northern New Mexico
Original language description
Low-slip rate fault systems tend to be less studied than their high-slip rate counterparts, and paleoseismic techniques used to study them may pose challenges in interpretation that differ from high-slip rate systems. A good example of this is the Pajarito fault system (PFS), a normal fault complex within the Rio Grande rift. Despite numerous previous paleoseismic trenching studies conducted on the PFS between 1990 and 2003, considerable uncertainty remains regarding its Holocene paleoseismic history, particularly for the primary Pajarito fault (PF). To further clarify the PF paleoseismic history, we present data from paleoseismic investigations of 6 trenches at 3 distinct locations along the PF. Though the totality of the age and structural data obtained in this study is complex and not entirely consistent with any one interpretation, a single Holocene paleoearthquake occurring younger than similar to 1,600 to 2,300 kcal yr BP is the simplest interpretation. It is possible that the PF records two Holocene events, with a penultimate event 6.9-2.4 kcal yr BP event and the aforementioned most recent event (MRE) between 2.3 and 1.6 kcal yr BP. However, only a single wall of one trench, out of a total of 12 walls in our 6 trenches, provides evidence supporting that interpretation. This study finds evidence of a single late Holocene paleoseismic event on the PF and sparse evidence for 2 Holocene paleoseismic events on the PF and highlights the benefits of logging multiple trench walls to better understand the complexity that results from this low-slip rate, low- deposition-rate fault system.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental & Engineering Geoscience
ISSN
1078-7275
e-ISSN
1558-9161
Volume of the periodical
31
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
19-35
UT code for WoS article
001452457400003
EID of the result in the Scopus database
2-s2.0-105006670144