Marith Reheis
My entire post-graduate career has been in the USGS in Denver, migrating from Conservation to Geologic Division early on, and then residing in the evolving branches of Regional Geology -- Environmental Geology -- Climate Change -- Earth Surface Processes Team. In parallel, my career has evolved through bedrock and surficial mapping, soil studies, neotectonics, desert dust sampling and a
Science and Products
Filter Total Items: 95
Geologic and hydrologic concerns about pupfish divergence during the last glacial maximum Geologic and hydrologic concerns about pupfish divergence during the last glacial maximum
Martin et al.'s [1] double-digest, restriction-site-associated DNA sequencing of Death Valley pupfish species (Cyprinodon) and new time-calibrated phylogenetic analysis provide estimated divergence ages for North American pupfish at two scales. On the larger temporal and spatial scale, Martin et al. conclude that the Death Valley pupfish shared common ancestry with: Cyprinodon albivelis...
Authors
Jeffrey R. Knott, Fred Phillips, Marith C. Reheis, Donald Sada, Angela S. Jayko, Gary Axen
Late Quaternary loess and soils on uplands in the Canyonlands and Mesa Verde areas, Utah and Colorado Late Quaternary loess and soils on uplands in the Canyonlands and Mesa Verde areas, Utah and Colorado
Thin loess deposits on the uplands of the southeastern Colorado Plateau have previously not been well studied. We sampled deposits and soils from trenches on Hatch Point (HP) mesa near Canyonlands National Park, Utah, and from two outcrops in Mesa Verde National Park, Colorado. At HP, the oldest buried unit yielded 2 optically stimulated luminescence (OSL) ages of 10,370 and 7555 yr; the...
Authors
Marith C. Reheis, Harland L. Goldstein, Richard L. Reynolds, Steven L. Forman, Shannon A. Mahan, Paul E. Carrara
Hydrologic response of desert wetlands to Holocene climate change: preliminary results from the Soda Springs area, Mojave National Preserve, California Hydrologic response of desert wetlands to Holocene climate change: preliminary results from the Soda Springs area, Mojave National Preserve, California
Desert wetlands are common features in arid environments and include a variety of hydrologic facies, including seeps, springs, marshes, wet meadows, ponds, and spring pools. Wet ground conditions and dense stands of vegetation in these settings combine to trap eolian, alluvial, and fluvial sediments that accumulate over time. The resulting deposits are collectively called ground-water...
Authors
Jeffrey S. Pigati, Marith C. Reheis, John P. McGeehin, Jeffrey S. Honke, J. Bright
The Bear River's history and diversion: Constraints, unsolved problems, and implications for the Lake Bonneville record: Chapter 2 The Bear River's history and diversion: Constraints, unsolved problems, and implications for the Lake Bonneville record: Chapter 2
The shifting course of the Bear River has influenced the hydrologic balance of the Bonneville basin through time, including the magnitude of Lake Bonneville. This was first recognized by G.K. Gilbert and addressed in the early work of Robert Bright, who focused on the southeastern Idaho region of Gem Valley and Oneida Narrows. In this chapter, we summarize and evaluate existing knowledge...
Authors
Joel L. Pederson, Susanne U. Janecke, Marith C. Reheis, Darrell S. Kaufmann, Robert Q. Oaks
Directly dated MIS 3 lake-level record from Lake Manix, Mojave Desert, California, USA Directly dated MIS 3 lake-level record from Lake Manix, Mojave Desert, California, USA
An outcrop-based lake-level curve, constrained by ~ 70 calibrated 14C ages on Anodonta shells, indicates at least 8 highstands between 45 and 25 cal ka BP within 10 m of the 543-m upper threshold of Lake Manix in the Mojave Desert of southern California. Correlations of Manix highstands with ice, marine, and speleothem records suggest that at least the youngest three highstands coincide...
Authors
Marith C. Reheis, David M. Miller, John P. McGeehin, Joanna R. Redwine, Charles G. Oviatt, Jordon E. Bright
Pluvial lakes in the Great Basin of the western United States: a view from the outcrop Pluvial lakes in the Great Basin of the western United States: a view from the outcrop
Paleo-lakes in the western United States provide geomorphic and hydrologic records of climate and drainage-basin change at multiple time scales extending back to the Miocene. Recent reviews and studies of paleo-lake records have focused on interpretations of proxies in lake sediment cores from the northern and central parts of the Great Basin. In this review, emphasis is placed on...
Authors
Marith C. Reheis, Kenneth D. Adams, Charles G. Oviatt, Steven N. Bacon
Non-USGS Publications**
Reheis, M.J., 1975, Source, transportation, and deposition of debris on Arapaho Glacier, Front Range, Colorado, USA: Journal of Glaciology, v. 14, p. 407-420.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Filter Total Items: 17
Science and Products
Filter Total Items: 95
Geologic and hydrologic concerns about pupfish divergence during the last glacial maximum Geologic and hydrologic concerns about pupfish divergence during the last glacial maximum
Martin et al.'s [1] double-digest, restriction-site-associated DNA sequencing of Death Valley pupfish species (Cyprinodon) and new time-calibrated phylogenetic analysis provide estimated divergence ages for North American pupfish at two scales. On the larger temporal and spatial scale, Martin et al. conclude that the Death Valley pupfish shared common ancestry with: Cyprinodon albivelis...
Authors
Jeffrey R. Knott, Fred Phillips, Marith C. Reheis, Donald Sada, Angela S. Jayko, Gary Axen
Late Quaternary loess and soils on uplands in the Canyonlands and Mesa Verde areas, Utah and Colorado Late Quaternary loess and soils on uplands in the Canyonlands and Mesa Verde areas, Utah and Colorado
Thin loess deposits on the uplands of the southeastern Colorado Plateau have previously not been well studied. We sampled deposits and soils from trenches on Hatch Point (HP) mesa near Canyonlands National Park, Utah, and from two outcrops in Mesa Verde National Park, Colorado. At HP, the oldest buried unit yielded 2 optically stimulated luminescence (OSL) ages of 10,370 and 7555 yr; the...
Authors
Marith C. Reheis, Harland L. Goldstein, Richard L. Reynolds, Steven L. Forman, Shannon A. Mahan, Paul E. Carrara
Hydrologic response of desert wetlands to Holocene climate change: preliminary results from the Soda Springs area, Mojave National Preserve, California Hydrologic response of desert wetlands to Holocene climate change: preliminary results from the Soda Springs area, Mojave National Preserve, California
Desert wetlands are common features in arid environments and include a variety of hydrologic facies, including seeps, springs, marshes, wet meadows, ponds, and spring pools. Wet ground conditions and dense stands of vegetation in these settings combine to trap eolian, alluvial, and fluvial sediments that accumulate over time. The resulting deposits are collectively called ground-water...
Authors
Jeffrey S. Pigati, Marith C. Reheis, John P. McGeehin, Jeffrey S. Honke, J. Bright
The Bear River's history and diversion: Constraints, unsolved problems, and implications for the Lake Bonneville record: Chapter 2 The Bear River's history and diversion: Constraints, unsolved problems, and implications for the Lake Bonneville record: Chapter 2
The shifting course of the Bear River has influenced the hydrologic balance of the Bonneville basin through time, including the magnitude of Lake Bonneville. This was first recognized by G.K. Gilbert and addressed in the early work of Robert Bright, who focused on the southeastern Idaho region of Gem Valley and Oneida Narrows. In this chapter, we summarize and evaluate existing knowledge...
Authors
Joel L. Pederson, Susanne U. Janecke, Marith C. Reheis, Darrell S. Kaufmann, Robert Q. Oaks
Directly dated MIS 3 lake-level record from Lake Manix, Mojave Desert, California, USA Directly dated MIS 3 lake-level record from Lake Manix, Mojave Desert, California, USA
An outcrop-based lake-level curve, constrained by ~ 70 calibrated 14C ages on Anodonta shells, indicates at least 8 highstands between 45 and 25 cal ka BP within 10 m of the 543-m upper threshold of Lake Manix in the Mojave Desert of southern California. Correlations of Manix highstands with ice, marine, and speleothem records suggest that at least the youngest three highstands coincide...
Authors
Marith C. Reheis, David M. Miller, John P. McGeehin, Joanna R. Redwine, Charles G. Oviatt, Jordon E. Bright
Pluvial lakes in the Great Basin of the western United States: a view from the outcrop Pluvial lakes in the Great Basin of the western United States: a view from the outcrop
Paleo-lakes in the western United States provide geomorphic and hydrologic records of climate and drainage-basin change at multiple time scales extending back to the Miocene. Recent reviews and studies of paleo-lake records have focused on interpretations of proxies in lake sediment cores from the northern and central parts of the Great Basin. In this review, emphasis is placed on...
Authors
Marith C. Reheis, Kenneth D. Adams, Charles G. Oviatt, Steven N. Bacon
Non-USGS Publications**
Reheis, M.J., 1975, Source, transportation, and deposition of debris on Arapaho Glacier, Front Range, Colorado, USA: Journal of Glaciology, v. 14, p. 407-420.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Filter Total Items: 17