Physiographic History of the Upper Arkansas and Eagle Rivers, Colorado

Behre, Charles H.

doi:10.1086/624110

Cited by 4 publications

(9 citation statements)

References 0 publications

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“…Our terrace 3, which corresponds to much of Terrace No. 2 of Behre (1933), is 12 m lower than our terrace 2. Although the argillic B horizon of profile 17 on terrace 3 is only 39 cm thick, it has the highest rubification index (117) and POI (70) of any of our soils, 8% more clay than the underlying Cox horizon, and moderately thick clay films that line pores and coat clasts (Table 1).…”

Section: Age-related Properties Of Soils On Outwash Terracescontrasting

confidence: 54%

“…Remnants of two gravelly terraces, which based on their height above the Arkansas River predate the Holocene (Terrace Nos. 3 and 4 of Behre, 1933; terraces 4 and 5 of this study), extend discontinuously along the river above and below the Twin Lakes moraines (Figs. lB, 3).…”

Section: Age-related Properties Of Soils On Outwash Terracesmentioning

confidence: 72%

“…The high outwash terraces near Twin Lakes (Terrace No.2 of Behre, 1933; terrace group 2-3 of Fig. 1) are preserved on the west side of the river, from Granite north to Half Moon Creek (Fig.…”

Section: Age-related Properties Of Soils On Outwash Terracesmentioning

confidence: 99%

“…Emmons et al (1927) supplemented the work of Capps (1909) with additional description of the surficial deposits near the mines of the Leadville area. Behre (1933) discussed five alluvial terraces in the Leadville area, but did not publish any detailed mapping. Ray (1940) later correlated moraines in the tributary valleys near Leadville with his glacial sequence in the Colorado Front Range based on his limited reconnaissance study in the Leadville area.…”

Section: Moraines and Terraces Of Bull Lake Age Near Leadvillementioning

confidence: 99%

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Soil Relative Dating of Moraine and Outwash-Terrace Sequences in the Northern Part of the Upper Arkansas Valley, Central Colorado, U.S.A.

Nelson¹,

Shroba²

1998

Arctic and Alpine Research

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Profile development indices for soils developed in moraines and outwash near Twin Lakes and in outwash near Leadville support the correlation of moraines with subdued morphology and two high outwash terraces with the Bull Lake glaciation (ca. 130-160 ka) and the correlation of hummocky moraines and two low outwash terraces with the Pinedale glaciation (ca. 14-47 ka). Elsewhere in the northern part of the upper Arkansas Valley, glacial sequences are correlated by mapping outwash terraces near the mouths of major tributaries of the Arkansas River. Near Twin Lakes, indices for soils on low, outer lateral moraines suggest that the older Pinedale glaciers extended beyond the margin of high, younger Pinedale lateral moraines with hummocky topography. A few subdued moraines near Twin Lakes and Leadville probably record one or more glaciations significantly older than the Bull Lake. The downvalley extent of Pinedale glaciers in the Mosquito Range on the east side of the Arkansas Valley is uncertain: most likely, Pinedale glaciers were almost as extensive as Bull Lake glaciers but built no prominent terminal moraines at their maximum positions.

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Section: Age-related Properties Of Soils On Outwash Terracescontrasting

confidence: 54%

Section: Age-related Properties Of Soils On Outwash Terracesmentioning

confidence: 72%

Section: Age-related Properties Of Soils On Outwash Terracesmentioning

confidence: 99%

Section: Moraines and Terraces Of Bull Lake Age Near Leadvillementioning

confidence: 99%

See 2 more Smart Citations

Soil Relative Dating of Moraine and Outwash-Terrace Sequences in the Northern Part of the Upper Arkansas Valley, Central Colorado, U.S.A.

Nelson¹,

Shroba²

1998

Arctic and Alpine Research

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show abstract

“…Behre (1933), Powers (1933Powers ( , 1935, and Powers and Behre (1934) provides a geologic history of Tertiary uplift and erosion and of Quaternary glaciation and glaciofluvial processes. Powers (1935) described seven fluvial terraces, which range in age from preglacial to post-glacial.…”

Section: Study Area Descriptionmentioning

confidence: 99%