Peter J Haeussler, Ph.D. (Former Employee)
Science and Products
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Tilting, burial, and uplift of the Guadalupe Igneous Complex, Sierra Nevada, California Tilting, burial, and uplift of the Guadalupe Igneous Complex, Sierra Nevada, California
It is often incorrectly assumed that plutons have a relatively uneventful structural history after emplacement. The 151 Ma Guadalupe Igneous Complex (GIC) in the Foothills Terrane, California, was involved in three post-emplacement events: (1) ∼30° of southwestside-up tilting during ductile regional faulting and contraction, (2) burial of the pluton from ∼4 to 12 km during crustal...
Authors
Peter J. Haeussler, Scott R. Paterson
Structural evolution of an arc-basin: The Gravina Belt in central southeastern Alaska Structural evolution of an arc-basin: The Gravina Belt in central southeastern Alaska
The upper Middle Jurassic-Lower Cretaceous Gravina belt lies along the eastern margin of the Alexander terrane in southeastern Alaska. This group of turbidites and mafic to intermediate volcanic rocks was deformed during mid to Late Cretaceous time during the closing of a basin of unknown size between the Alexander terrane on the west and the Stikine terrane to the east. Therefore...
Authors
Peter J. Haeussler
Paleomagnetism and geochronology of 23 Ma gabbroic intrusions in the Keku Strait, Alaska, and implications for the Alexander Terrane Paleomagnetism and geochronology of 23 Ma gabbroic intrusions in the Keku Strait, Alaska, and implications for the Alexander Terrane
Samples of Tertiary gabbro from 24 sites in the Keku Strait, Alaska, help constrain the displacement history of the Alexander terrane. Step heating experiments on a plagioclase separate from these previously undated intrusions indicate a discordant 40Ar/39Ar age of 23.1 ± 1.7 Ma. The characteristic magnetization resides in magnetite, is easily isolated by thermal and alternating field
Authors
Peter J. Haeussler, Robert S. Coe, Paul R. Renne
Paleomagnetism of the Late Triassic Hound Island Volcanics: Revisited Paleomagnetism of the Late Triassic Hound Island Volcanics: Revisited
The collision and accretion of the Alexander terrane profoundly influenced the geologic history of Alaska and western Canada; however, the terrane's displacement history is only poorly constrained by sparse paleomagnetic studies. We studied the paleomagnetism of the Hound Island Volcanics in order to evaluate the location of the Alexander terrane in Late Triassic time. We collected 618...
Authors
Peter J. Haeussler, Robert S. Coe, T.C. Onstott
Science and Products
Filter Total Items: 25
No Result Found
Filter Total Items: 154
Tilting, burial, and uplift of the Guadalupe Igneous Complex, Sierra Nevada, California Tilting, burial, and uplift of the Guadalupe Igneous Complex, Sierra Nevada, California
It is often incorrectly assumed that plutons have a relatively uneventful structural history after emplacement. The 151 Ma Guadalupe Igneous Complex (GIC) in the Foothills Terrane, California, was involved in three post-emplacement events: (1) ∼30° of southwestside-up tilting during ductile regional faulting and contraction, (2) burial of the pluton from ∼4 to 12 km during crustal...
Authors
Peter J. Haeussler, Scott R. Paterson
Structural evolution of an arc-basin: The Gravina Belt in central southeastern Alaska Structural evolution of an arc-basin: The Gravina Belt in central southeastern Alaska
The upper Middle Jurassic-Lower Cretaceous Gravina belt lies along the eastern margin of the Alexander terrane in southeastern Alaska. This group of turbidites and mafic to intermediate volcanic rocks was deformed during mid to Late Cretaceous time during the closing of a basin of unknown size between the Alexander terrane on the west and the Stikine terrane to the east. Therefore...
Authors
Peter J. Haeussler
Paleomagnetism and geochronology of 23 Ma gabbroic intrusions in the Keku Strait, Alaska, and implications for the Alexander Terrane Paleomagnetism and geochronology of 23 Ma gabbroic intrusions in the Keku Strait, Alaska, and implications for the Alexander Terrane
Samples of Tertiary gabbro from 24 sites in the Keku Strait, Alaska, help constrain the displacement history of the Alexander terrane. Step heating experiments on a plagioclase separate from these previously undated intrusions indicate a discordant 40Ar/39Ar age of 23.1 ± 1.7 Ma. The characteristic magnetization resides in magnetite, is easily isolated by thermal and alternating field
Authors
Peter J. Haeussler, Robert S. Coe, Paul R. Renne
Paleomagnetism of the Late Triassic Hound Island Volcanics: Revisited Paleomagnetism of the Late Triassic Hound Island Volcanics: Revisited
The collision and accretion of the Alexander terrane profoundly influenced the geologic history of Alaska and western Canada; however, the terrane's displacement history is only poorly constrained by sparse paleomagnetic studies. We studied the paleomagnetism of the Hound Island Volcanics in order to evaluate the location of the Alexander terrane in Late Triassic time. We collected 618...
Authors
Peter J. Haeussler, Robert S. Coe, T.C. Onstott
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