scholarly journals Geochronology and generalized geology of the central Alaska Range, Clearwater Mountains, and northern Talkeetna Mountains

10.14509/167 ◽  
1974 ◽  
Author(s):  
D. L. Turner ◽  
T. E. Smith
Keyword(s):  
Alaska Range ◽  
Talkeetna Mountains

There's more Wrangellia - Magnetic characterization of southern Alaska crust

2021 ◽  
Author(s):  
Richard W. Saltus ◽  
Travis Hudson
Keyword(s):  
Lower Jurassic ◽  
Magnetic Potential ◽  
Magnetic Data ◽  
Magnetic Characterization ◽  
Alaska Range ◽  
Volcanic Arc ◽  
South Central ◽  
Fourier Filtering ◽  
Talkeetna Mountains ◽  
Bearing Part

In southern Alaska, Wrangellia-type magnetic crustal character extends from the Talkeetna Mountains southwest through the Alaska Range to the Bristol Bay region. Magnetic data analyses in the Talkeetna Mountains showed that there are mid-crustal differences in the magnetic properties of Wrangellia and the Peninsular terrane. After converting total field magnetic anomaly data to magnetic potential, we applied Fourier filtering techniques to remove magnetic responses from deep and shallow sources. The resulting mid-crustal magnetic characterization delineates the regional magnetic potential domains that correspond to the Wrangellia and Peninsular terranes throughout southern Alaska. These magnetic potential domains show that Wrangellia-type crust extends southwest to the Illiamna Lake region and that it overlaps the mapped Peninsular terrane. Upon reconsidering geologic ties between Wrangellia, Peninsular, and Alexander terranes we conclude that Peninsular terrane is part of what we here call Western Wrangellia. Western Wrangellia contains the Lower Jurassic Talkeetna volcanic arc and is similar to Wrangellia of the Vancouver Island area, Canada (Southern Wrangellia) which contains the Lower Jurassic Bonanza volcanic arc. Others have previously made this correlation and proposed that the Talkeetna arc-bearing part of southern Alaska was displaced from the Bonanza arc-bearing part of Canada. We generally agree and propose that about 1000 km of dextral displacement along ancestral Border Ranges fault segments and other faults of south-central Alaska separated Western Wrangellia from Southern Wrangellia. We think this displacement was mostly in the Late Jurassic and earliest Cretaceous, perhaps between about 160 and 130 Ma.

scholarly journals U-Pb geochronology of igneous and detrital zircon samples from the Tok River area, eastern Alaska Range, and Talkeetna Mountains, Alaska

2020 ◽  
Author(s):  
C.S. Holm-Denoma ◽  
K.R. Sicard ◽  
Evan Twelker
Keyword(s):  
Detrital Zircon ◽  
Alaska Range ◽  
Talkeetna Mountains

scholarly journals U-Pb and Lu-Hf isotope, age, and trace-element data from zircons at four sites in the western Alaska Range and Talkeetna Mountains, Alaska

2017 ◽  
Author(s):  
Erin Todd ◽  
Andrew Kylander-Clark ◽  
Alicja Wypych ◽  
Evan Twelker ◽  
K.R. Sicard
Keyword(s):  
Trace Element ◽  
Hf Isotope ◽  
Trace Element Data ◽  
Alaska Range ◽  
Element Data ◽  
Isotope Age ◽  
Talkeetna Mountains

Timing of ore-related magmatism in the western Alaska Range, southwestern Alaska

2014 ◽  
Author(s):  
Ryan D. Taylor ◽  
Garth E. Graham ◽  
Eric D. Anderson ◽  
David Selby
Keyword(s):  
Alaska Range ◽  
Southwestern Alaska

Structural geology of the Nenana River segment of the Denali fault system, central Alaska Range

1977 ◽  
Vol 88 (9) ◽  
pp. 1217 ◽  
Author(s):  
ROBERT G. HICKMAN ◽  
CAMPBELL CRADDOCK ◽  
KIRK W. SHERWOOD
Keyword(s):  
Structural Geology ◽  
Fault System ◽  
Alaska Range ◽  
Denali Fault

SEDIMENTARY AND VOLCANIC RECORD OF NEOGENE TRANSPRESSIONAL FORELAND BASIN DEVELOPMENT ALONG THE CENTRAL DENALI FAULT SYSTEM, EASTERN ALASKA RANGE

2016 ◽  
Author(s):  
Wai K. Allen ◽  
◽  
Kenneth D. Ridgway ◽  
Jeff Benowitz ◽  
Trevor S. Waldien ◽  
...  
Keyword(s):  
Foreland Basin ◽  
Fault System ◽  
Alaska Range ◽  
Denali Fault ◽  
Basin Development

MID-CRETACEOUS VOLCANISM AND FLUVIAL SEDIMENTATION IN THE ALASKA RANGE SUTURE ZONE: IMPLICATIONS FOR THE ACCRETIONARY HISTORY OF THE WRANGELLIA COMPOSITE TERRANE

2017 ◽  
Author(s):  
Donald Q. Koepp ◽  
◽  
Jeffrey M. Trop ◽  
Jeff A. Benowitz ◽  
Paul W. Layer ◽  
...  
Keyword(s):  
Suture Zone ◽  
Alaska Range ◽  
History Of ◽  
Fluvial Sedimentation ◽  
Cretaceous Volcanism
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