PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA
The Hines Creek fault (HCF) is a Holocene-active fault in central Alaska. Its trace has been mapped several times, but data on the history of fault displacement is scarce. As a major crustal-scale geologic boundary with uncertain Quaternary tectonic activity, it is a priority for more to be known ab...
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ftunivkentucky:oai:uknowledge.uky.edu:ees_etds-1023 2023-05-15T13:09:44+02:00 PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA Federschmidt, Sara E 2014-01-01T08:00:00Z application/pdf https://uknowledge.uky.edu/ees_etds/22 https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1023&context=ees_etds unknown UKnowledge https://uknowledge.uky.edu/ees_etds/22 https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1023&context=ees_etds Theses and Dissertations--Earth and Environmental Sciences Paleoseismology neotectonics coseismic fissures Alaska Range Hines Creek fault Geology Geomorphology Tectonics and Structure text 2014 ftunivkentucky 2021-08-29T16:26:24Z The Hines Creek fault (HCF) is a Holocene-active fault in central Alaska. Its trace has been mapped several times, but data on the history of fault displacement is scarce. As a major crustal-scale geologic boundary with uncertain Quaternary tectonic activity, it is a priority for more to be known about the activity of this fault to better understand the hazards it presents to the Denali National Park and Preserve and Alaskan infrastructure. This study characterizes the late Quaternary activity of the HCF through surficial geologic mapping and paleoseismic investigations. Mapping revealed a very steep (~84°-88° apparent dip), north dipping fault plane and measurements from offset Pleistocene outwash terraces revealed south side-down vertical offsets of up to 12 m, indicating a steeply dipping reverse fault. Three paleoseismic trenches excavated across the fault trace provided a record of seismic activity and hold evidence for at least four prehistoric earthquakes in the last 2 ka. Slip rate calculations estimate movement on the HCF to be between 0.6mm yr-1 and1.2 mm yr-1. The active trace of the HCF follows the southern margin of the tectonically active Mount Healy anticline, suggesting a kinematic linkage between the fault that underlies this anticline and the HCF. Text alaska range Alaska University of Kentucky: UKnowledge Hines ENVELOPE(13.035,13.035,66.243,66.243) Hines Creek ENVELOPE(-118.619,-118.619,55.917,55.917) |
institution |
Open Polar |
collection |
University of Kentucky: UKnowledge |
op_collection_id |
ftunivkentucky |
language |
unknown |
topic |
Paleoseismology neotectonics coseismic fissures Alaska Range Hines Creek fault Geology Geomorphology Tectonics and Structure |
spellingShingle |
Paleoseismology neotectonics coseismic fissures Alaska Range Hines Creek fault Geology Geomorphology Tectonics and Structure Federschmidt, Sara E PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA |
topic_facet |
Paleoseismology neotectonics coseismic fissures Alaska Range Hines Creek fault Geology Geomorphology Tectonics and Structure |
description |
The Hines Creek fault (HCF) is a Holocene-active fault in central Alaska. Its trace has been mapped several times, but data on the history of fault displacement is scarce. As a major crustal-scale geologic boundary with uncertain Quaternary tectonic activity, it is a priority for more to be known about the activity of this fault to better understand the hazards it presents to the Denali National Park and Preserve and Alaskan infrastructure. This study characterizes the late Quaternary activity of the HCF through surficial geologic mapping and paleoseismic investigations. Mapping revealed a very steep (~84°-88° apparent dip), north dipping fault plane and measurements from offset Pleistocene outwash terraces revealed south side-down vertical offsets of up to 12 m, indicating a steeply dipping reverse fault. Three paleoseismic trenches excavated across the fault trace provided a record of seismic activity and hold evidence for at least four prehistoric earthquakes in the last 2 ka. Slip rate calculations estimate movement on the HCF to be between 0.6mm yr-1 and1.2 mm yr-1. The active trace of the HCF follows the southern margin of the tectonically active Mount Healy anticline, suggesting a kinematic linkage between the fault that underlies this anticline and the HCF. |
format |
Text |
author |
Federschmidt, Sara E |
author_facet |
Federschmidt, Sara E |
author_sort |
Federschmidt, Sara E |
title |
PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA |
title_short |
PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA |
title_full |
PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA |
title_fullStr |
PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA |
title_full_unstemmed |
PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA |
title_sort |
paleoseismic and structural characterization of the hines creek fault: denali national park and preserve, alaska |
publisher |
UKnowledge |
publishDate |
2014 |
url |
https://uknowledge.uky.edu/ees_etds/22 https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1023&context=ees_etds |
long_lat |
ENVELOPE(13.035,13.035,66.243,66.243) ENVELOPE(-118.619,-118.619,55.917,55.917) |
geographic |
Hines Hines Creek |
geographic_facet |
Hines Hines Creek |
genre |
alaska range Alaska |
genre_facet |
alaska range Alaska |
op_source |
Theses and Dissertations--Earth and Environmental Sciences |
op_relation |
https://uknowledge.uky.edu/ees_etds/22 https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1023&context=ees_etds |
_version_ |
1766196892030468096 |