marc hendrix

University of Montana, Geosciences, Faculty Member

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Assessing The Role Of Integrated Learning In The BSc International Field Geosciences (IFG) Joint Degree Programme At University College Cork, the University of Montana and the University of Potsdam

The Department of Geology at University College Cork (UCC), Ireland, in conjunction with the Univ... more The Department of Geology at University College Cork (UCC), Ireland, in conjunction with the Universities of Montana (UM) and Potsdam (UP) launched a new BSc in International Field Geosciences in Autumn 2008. In this program superb natural field geoscience laboratories available in Europe and the western United States are utilized as learning environments forming the basis for a ‘Joint' Bachelor of Science undergraduate degree. This programme focuses on the documentation, interpretation, and synthesis of critical geological issues in the field. It rests upon a backbone of existing modules that are the foundation of current geology programs at three partner institutions complemented by an emphasis on the development of field-based learning in an intercultural setting. The core curriculum is identical to that required for the existing BSc Geology at UCC except the third Year is spent abroad at UM while additional courses are taken at the UP at the start the fourth year. The mobili...

Field-Based Research Partnerships: Teachers, Students, and Scientists Investigate the Geologic History of Eastern Montana Using Geospatial Technologies

Teaching Science and Investigating Environmental Issues with Geospatial Technology, 2013

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Depositional processes and the inferred history of ice-margin retreat associated with the deglaciation of the Cordilleran Ice Sheet: The sedimentary record from Flathead Lake, northwest Montana, USA

Sedimentary Geology, 2010

A series of piston cores from Flathead Lake, Montana, USA and a new radiocarbon date from the sed... more A series of piston cores from Flathead Lake, Montana, USA and a new radiocarbon date from the sedimentary record provide the basis for describing sedimentary processes related to deglaciation of the Flathead Lobe of the Cordilleran Ice Sheet and for interpreting the retreat history of the lobe. The oldest part of Flathead Lake sediment core records is Late Pleistocene in age and consists of cm-scale rhythmites of silt and clay, interpreted here as annual varves. Each varve contains a light-colored coarser-grained portion, inferred to represent deposition during peak annual runoff, and a darker-colored finer-grained portion interpreted to represent sediment accumulation during seasonal low-flow conditions. The coarser-grained portions, especially in the stratigraphically older sections of each core, contain sedimentary structures that reflect traction transport. Based on these sedimentary structures, their facies characteristics, and their spatial distribution within the lake, we interpret the thicker, light-colored portion of each varve to be deposited by hyperpycnal flows caused by seasonal melt events rather than more classic turbidity currents. Immediately overlying Late Pleistocene rhythmites in all Flathead Lake cores is a unique, significantly coarser-grained dm-scale silt bed with a median grain size up to 50 µm. This silt bed has a sharp, locally erosional base and fines upward but does not contain any other sedimentary structures. In contrast to the rhythmites, we interpret this silt bed to represent a single, short-lived catastrophic sedimentation event generated by a large glacial outburst flood. Overlying this distinct bed are several other cm-scale beds of mainly silt that exhibit a basal upward-coarsening followed by an upward-fining median grain size profile. We interpret these beds and their grain size trends as reflecting the rising and falling hydrograph limbs of outburst floods derived from more distal sources located in the upstream parts of the upper Flathead watershed. The sediment record from Flathead Lake, together with results from geologic and geomorphologic 1:24,000 scale mapping around the lake margins, provide a series of constraints regarding the paleogeographic evolution of the area during deglaciation. Overall upward-thinning and upward-fining of the varved portion of the sediment core records reflects northward retreat of the southern Flathead Lobe ice margin starting at latest 14,475 ± 150 cal yr BP, the depositional age of the oldest varve in any of our cores. The depositional age of silt beds overlying the varved records is constrained as between 14,150 ± 150 cal yr BP and 13,180 ± 120 cal yr BP. Within the available chronostratigraphic constraints, the outburst floods interpreted to have delivered this silt to the Flathead Lake basin also downcut a bedrock nick point below the Flathead Lake outlet, oriented a series of large boulders downstream, and deposited a series of large flood bars on the lower Flathead River floodplain.

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Stratigraphic record of the Yellowstone hotspot track, Neogene Sixmile Creek Formation grabens, southwest Montana

by James Sears, marc hendrix, and William Fritz

Journal of Volcanology and Geothermal Research, 2009

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Sedimentary response to orogenic exhumation in the northern Rocky Mountain Basin and Range province, Flint Creek basin, west-central Montana

Canadian Journal of Earth Sciences, 2011

... Ryan A. Portner, a , * Marc S. Hendrix, a Jeremy C. Stalker, a Dan P. Miggins, b Steven D. Sh... more

Structural and stratigraphic evolution of the Rocky Mountain foreland basin in central-western Montana

Geologic field trips, western Montana and adjacent areas. Edited by S. Roberts and D. Winston. Rocky Mountain Section of the Geological Society of America, University of Montana, Missoula, Mont, 2000

This field trip examines the Late Cretaceous-Paleocene structural and stratigraphic evolution of ... more

Assessing The Role Of Integrated Learning In The BSc International Field Geosciences (IFG) Joint Degree Programme At University College Cork, the University of Montana and the University of Potsdam

Field-Based Research Partnerships: Teachers, Students, and Scientists Investigate the Geologic History of Eastern Montana Using Geospatial Technologies

Teaching Science and Investigating Environmental Issues with Geospatial Technology, 2013

Download

Depositional processes and the inferred history of ice-margin retreat associated with the deglaciation of the Cordilleran Ice Sheet: The sedimentary record from Flathead Lake, northwest Montana, USA

Sedimentary Geology, 2010

Download

Stratigraphic record of the Yellowstone hotspot track, Neogene Sixmile Creek Formation grabens, southwest Montana

by James Sears, marc hendrix, and William Fritz

Journal of Volcanology and Geothermal Research, 2009

Download

Sedimentary response to orogenic exhumation in the northern Rocky Mountain Basin and Range province, Flint Creek basin, west-central Montana

Canadian Journal of Earth Sciences, 2011

... Ryan A. Portner, a , * Marc S. Hendrix, a Jeremy C. Stalker, a Dan P. Miggins, b Steven D. Sh... more

Structural and stratigraphic evolution of the Rocky Mountain foreland basin in central-western Montana

Geologic field trips, western Montana and adjacent areas. Edited by S. Roberts and D. Winston. Rocky Mountain Section of the Geological Society of America, University of Montana, Missoula, Mont, 2000

This field trip examines the Late Cretaceous-Paleocene structural and stratigraphic evolution of ... more

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