East-west geologic cross section along the DeBarr Line, Anchorage, Alaska

Schmoll, Henry R.; Barnwell, William W.

doi:10.3133/ofr84791

Cited by 18 publications

(30 citation statements)

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“…An east-west geologic cross section through this part of the Anchorage lowland was identified as the DeBarr line ( fig. 1) by Schmoll and Barnwell (1984), who present an initial log of the Tikishla Park drill hole in relation to other well logs.…”

Section: Discussionmentioning

confidence: 99%

“…For deeper units, those below lithologic unit 86, we do not have as yet any new age determinations. Therefore, the assumption is continued that these rocks, as interpreted on the DeBarr cross section (Schmoll and Barnwell, 1984), are part of the Kenai Group (Wolfe and Tanai, 1980) and probably lie within the Tyonek Formation, as are similar rocks exposed in the Eagle River area (Wolfe and others, 1966).…”

Section: Discussionmentioning

confidence: 99%

“…2), Yukon Services, Inc., well, generalized physiography, and typical distribution of Quaternary glacial and estuarine deposits in the upper subsurface. The Debarr line, a geologic cross section, is described in Schmoll and Barnwell (1984). Geophysical logging began soon after completion of drilling and utilized a Mount Sopris Model II borehole logger with digital cassette recorder.…”

Section: Data Collectionmentioning

confidence: 99%

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Overview of the geology and geophysics of the Tikishla Park drill hole, USGS A-84-1, Anchorage, Alaska

Yehle¹,

Odum²,

Schmoll³

et al. 1986

Open-File Report

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Data Collectionmentioning

confidence: 99%

See 1 more Smart Citation

Overview of the geology and geophysics of the Tikishla Park drill hole, USGS A-84-1, Anchorage, Alaska

Yehle¹,

Odum²,

Schmoll³

et al. 1986

Open-File Report

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“…Thick deposits of non-marine Tertiary sediments, principally composed of sandstone, siltstone and claystone, lie above the bedrock which constitutes a major unit of the Cenozoic sequence beneath the Anchorage lowlands. These, in turn, are overlain by several hundred metres of Quaternary deposits (Schmoll & Barnwell 1984) derived from widespread Pleistocene glacial advances. The sedimentation resulted from the glacial drifting (GD) composed of heterogeneous deposits of mixed clay, silt, sand and gravel of moderately stratified to unstratified units distributed in the lowlands and the valley areas ( Fig.…”

Section: Geolog I C a L A N D T E C T O N I C S E T T I N G O F T H Ementioning

confidence: 99%

Three-dimensional imaging of shear wave velocity in the uppermost 30 m of the soil column in Anchorage, Alaska

Badal¹,

Dutta²,

Serón³

et al. 2004

Geophysical Journal International

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S U M M A R YThe main aim of this paper is to obtain an overall view of the shear wave velocity structure of the Anchorage metropolitan area and to analyse in detail the extent of various soils types both laterally and vertically. For this purpose a stochastic scheme has been used to invert the Rayleigh wave phase velocity data to obtain 1-D shear wave velocity structure in the uppermost 0-30 m at 36 sites in the Anchorage Basin, located in south central Alaska. On the basis of these 1-D velocity models we have applied an imaging technique aimed at volumetric modelling and data visualization based on an interpolation algorithm involving finite differences. We present a 3-D representation of the S-wave velocity structure of the Anchorage area obtained through spatial prediction. These velocity images are shown as horizontal slices at gradually increasing depths, vertical cross-sections at various latitudes and longitudes, and 3-D blocks as defined by characteristic velocity ranges. They enable us to understand in detail the different soil classes by their characteristic shear wave velocities. The images are in good agreement with the available geological information about the area.

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“…Bedrock beneath the Anchorage lowland is concealed by a northwest-thickening wedge of glacial and glacioestuarine deposits (Dearborn and Barnwell, 1975;Schmoll and Barnwell, 1984;Schmoll and others, 1986). In the Hillside area where the coyer is thin, the underlying bedrock comprises Chugach terrane rocks probably similar to those that crop out in the mountains.…”

Section: Bedrockmentioning

confidence: 99%