Tectonic Growth of a Collisional Continental Margin: Crustal Evolution of Southern Alaska

Pre-, syn-, and postcollisional stratigraphic framework and provenance of Upper Triassic–Upper Cretaceous strata in the northwestern Talkeetna Mountains, Alaska
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Published:January 01, 2007
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CiteCitation
Brian A. Hampton, Kenneth D. Ridgway, J. Michael O'Neill, George E. Gehrels, Jeanine Schmidt, Robert B. Blodgett, 2007. "Pre-, syn-, and postcollisional stratigraphic framework and provenance of Upper Triassic–Upper Cretaceous strata in the northwestern Talkeetna Mountains, Alaska", Tectonic Growth of a Collisional Continental Margin: Crustal Evolution of Southern Alaska, Kenneth D. Ridgway, Jeffrey M. Trop, Jonathan M.G. Glen, J. Michael O'Neill
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Mesozoic strata of the northwestern Talkeetna Mountains are located in a regional suture zone between the allochthonous Wrangellia composite terrane and the former Mesozoic continental margin of North America (i.e., the Yukon-Tanana terrane). New geologic mapping, measured stratigraphic sections, and provenance data define a distinct three-part stratigraphy for these strata. The lowermost unit is greater than 290 m thick and consists of Upper Triassic–Lower Jurassic mafic lavas, fossiliferous limestone, and a volcaniclastic unit that collectively we informally refer to as the Honolulu Pass formation. The uppermost 75 m of the Honolulu Pass formation represent a condensed stratigraphic interval that records...
- absolute age
- age
- Alaska
- allochthons
- carbonate rocks
- clastic rocks
- conglomerate
- correlation
- Cretaceous
- depositional environment
- detritus
- lava
- limestone
- lithostratigraphy
- mapping
- Mesozoic
- mudstone
- nesosilicates
- North America
- orthosilicates
- provenance
- sandstone
- sedimentary rocks
- sedimentation
- silicates
- siltstone
- Southern Alaska
- submarine fans
- suture zones
- Talkeetna Mountains
- terranes
- Triassic
- U/Pb
- United States
- Upper Cretaceous
- Upper Triassic
- Wrangellia
- Yukon-Tanana Terrane
- zircon
- zircon group
- Kahiltna Assemblage
- northwestern Talkeetna Mountains
- Honolulu Pass Formation