1-20 OF 1001 RESULTS FOR

Elk Creek

Results shown limited to content with bounding coordinates.
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article

Geophysical expression of a buried niobium and rare earth element deposit: The Elk Creek carbonatite, Nebraska, USA

Benjamin J. Drenth
Journal: Interpretation
Published: 08 September 2014
Interpretation (2014) 2 (4): SJ23–SJ33.
DOI: https://doi.org/10.1190/INT-2014-0002.1
...Benjamin J. Drenth Abstract The lower Paleozoic Elk Creek carbonatite is a 6–8-km-diameter intrusive complex buried under 200 m of sedimentary rocks in southeastern Nebraska. It hosts the largest known niobium deposit in the U.S. and a rare earth element (REE) deposit. The carbonatite is composed...
FIGURES | View All (8)
PDF
Purchase
Add to Citation Manager
Journal Article

Durabilities of sand size schist and 'volcanic' rock fragments during fluvial transport, Elk creek, Black Hills, South Dakota

Kenneth L. Cameron, Harvey Blatt
Published: 01 June 1971
Journal of Sedimentary Research (1971) 41 (2): 565–576.
DOI: https://doi.org/10.1306/74D722D4-2B21-11D7-8648000102C1865D
...Kenneth L. Cameron; Harvey Blatt Abstract Elk Creek is 120 stream miles (70 airline miles) in length and flows eastward from the northern Black Hills to join the Cheyenne River. The drainage basin encloses 601 sq. mi., of which 95.1 percent is underlain by Paleozoic and Mesozoic sedimentary rocks...
PDF
Purchase
Add to Citation Manager
Image
Table 1. Summary of each quarry at <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> and Fifteenmile <span class="search-highlight">Creek</span>. Errors...

Table 1. Summary of each quarry at Elk Creek and Fifteenmile Creek. Errors...

Published: 01 November 2009
Table 1. Summary of each quarry at Elk Creek and Fifteenmile Creek. Errors in damage diversity are given as one standard deviation above and below the mean of the resamples, and errors on the percentage of leaves damaged represent the binomial sampling error. GPS coordinates are given using
Image
Complete Bouguer gravity map of the region surrounding the <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> carbon...

Complete Bouguer gravity map of the region surrounding the Elk Creek carbon...

Published: 08 September 2014
Figure 1. Complete Bouguer gravity map of the region surrounding the Elk Creek carbonatite. Data are from the Pan-American Center for Earth and Environmental Studies (2012) . The red box shows the location of subsequent figures.
Image
Geology of the <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> carbonatite (this study), as expressed in borehole...

Geology of the Elk Creek carbonatite (this study), as expressed in borehole...

Published: 08 September 2014
Figure 2. Geology of the Elk Creek carbonatite (this study), as expressed in boreholes at an elevation of 120 m above sea level (roughly 230 m below ground surface). Age relations among the carbonatite units are poorly known, and the ordering of units within the explanation is not meant to imply
Image
Deep-seated landslide terrain of <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> (Oregon, western United States) ...

Deep-seated landslide terrain of Elk Creek (Oregon, western United States) ...

Published: 01 April 2013
Figure 3. Deep-seated landslide terrain of Elk Creek (Oregon, western United States) overlain on baseline relation between valley width and drainage area from Harvey Creek. Bold lines represent prediction intervals around regression line (thin dark line) for baseline relation.
Image
Table 2. Summary statistics for the abundant plant species at <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span>. L...

Table 2. Summary statistics for the abundant plant species at Elk Creek. L...

Published: 01 November 2009
Table 2. Summary statistics for the abundant plant species at Elk Creek. Leaf (or leaflet for Averrhoites affinis ) mass per area was reconstructed using petiole width analysis ( Royer et al. 2007 ), and errors represent the 95% prediction intervals. The number of leaf(let) specimens used
Image
Figure 1. Outcrop traces of the South Fork of <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> and Fifteenmile Cr...

Figure 1. Outcrop traces of the South Fork of Elk Creek and Fifteenmile Cr...

Published: 01 November 2009
Figure 1. Outcrop traces of the South Fork of Elk Creek and Fifteenmile Creek carbonaceous shale beds used in this study. A dry riverbed cuts through the exposed Elk Creek shale bed, causing the gap in the trace. Individual plant quarry sites are marked. The GPS coordinates for each quarry
Image
Figure 3. Damage frequency of individual plant species at <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> (A) an...

Figure 3. Damage frequency of individual plant species at Elk Creek (A) an...

Published: 01 November 2009
Figure 3. Damage frequency of individual plant species at Elk Creek (A) and Fifteenmile Creek (B). The light-gray histogram bars are individual quarries (left to right: 0501, 0502, 0503, 0504, and 0505 at Elk Creek and 0603, 0604, 0605, 0606, 0607, 0609, and 0610 at Fifteenmile Creek
Image
Figure 4. Resampling curves of insect damage diversity at <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> (A), F...

Figure 4. Resampling curves of insect damage diversity at Elk Creek (A), F...

Published: 01 November 2009
Figure 4. Resampling curves of insect damage diversity at Elk Creek (A), Fifteenmile Creek (B), and both sites on the same plot (C). The pooled quarry resamples have been truncated to 300 leaves at Elk Creek (A) and 500 leaves at Fifteenmile Creek (B). Error bars in A and B are one standard
Image
Figure 1. The original hypothesis of species turnover in the <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> com...

Figure 1. The original hypothesis of species turnover in the Elk Creek com...

Published: 01 February 2009
Figure 1. The original hypothesis of species turnover in the Elk Creek composite section. Figure modified from Schankler (1980 : Fig. 4 ). Black area represents species disappearance counts; stippled area represents species appearance counts. The sample includes the appearances
Image
Geologic map of the <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> Melange site locality near Covelo; the geolog...

Geologic map of the Elk Creek Melange site locality near Covelo; the geolog...

Published: 01 January 2007
Text-Figure 5. Geologic map of the Elk Creek Melange site locality near Covelo; the geology is after Gucwa (1975) .
Image
Occurrences of dinoflagellate cyst taxa from the <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> Melange locality...

Occurrences of dinoflagellate cyst taxa from the Elk Creek Melange locality...

Published: 01 January 2007
Table 3. Occurrences of dinoflagellate cyst taxa from the Elk Creek Melange locality samples.SYSTEMATIC PALEONTOLOGY
Image
—Stratigraphic section, <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span>, Secs. 23–26, T5S, R91W, Garfield County,...

—Stratigraphic section, Elk Creek, Secs. 23–26, T5S, R91W, Garfield County,...

Published: 01 November 1968
Fig. 4. —Stratigraphic section, Elk Creek, Secs. 23–26, T5S, R91W, Garfield County, Colorado, 2 mi northwest of New Castle.
Image
—Stratigraphic ranges of significant microfossils, <span class="search-highlight">Elk</span> <span class="search-highlight">Creek</span> section, Secs....

—Stratigraphic ranges of significant microfossils, Elk Creek section, Secs....

Published: 01 November 1968
Fig. 6. —Stratigraphic ranges of significant microfossils, Elk Creek section, Secs. 23–26, T5S, R91W, Garfield County, Colorado.
Journal Article

Eocene hydromorphic Paleosols; significance for interpreting ancient floodplain processes

Mary J. Kraus, Andres Aslan
Published: 01 May 1993
Journal of Sedimentary Research (1993) 63 (3): 453–463.
DOI: https://doi.org/10.1306/D4267B22-2B26-11D7-8648000102C1865D
...Mary J. Kraus; Andres Aslan Abstract Pervasive mottling, iron-oxide nodules, and slickensides indicate that alluvial paleosols of the lower Eocene Willwood Formation in the Elk Creek area of the Bighorn Basin, Wyoming were hydromorphic. Two basic groups of hydromorphic paleosols are present...
PDF
Purchase
Add to Citation Manager
Image
Figure 2. Fossil localities in the central part of the Bighorn Basin. Soli...

Figure 2. Fossil localities in the central part of the Bighorn Basin. Soli...

Published: 01 February 2009
by Schankler and Wing that were combined to form the Elk Creek composite section. The study area is divided into localized regions, including the Elk Creek drainage basin (EC), the Elk Creek Rim (ECR, shaded in the figure), the Fifteenmile Creek drainage basin (FMC), and the area southeast of the town
Journal Article

Protosalvinia ( Foerstia ) Zone in the Upper Devonian Sequence of Eastern Ohio, Northwestern Pennsylvania, and Western New York

JAMES L. MURPHY
Journal: GSA Bulletin
Published: 01 October 1973
GSA Bulletin (1973) 84 (10): 3405–3410.
DOI: https://doi.org/10.1130/0016-7606(1973)84<3405:PFZITU>2.0.CO;2
...JAMES L. MURPHY Abstract Remains of Protosalvinia ( Foerstia ), a fucalean alga restricted to Upper Devonian strata, are locally abundant in the Chagrin Shale Formation along Conneaut Creek in Ashtabula County, Ohio. Protosalvinia also occurs along Conneaut Creek and Little Elk Creek in Erie County...
PDF
Purchase
Add to Citation Manager
Image
Litosphaeridium gaponoffiae sp. nov. The scale bar represents 20 μm unless...

Litosphaeridium gaponoffiae sp. nov. The scale bar represents 20 μm unless...

Published: 01 January 2007
operculum. Sample PL5450, slide FT44, coordinates 91.4 x 11.2, England Finder coordinate L28/4, Cache Creek Dam, California. 4 Additional specimen showing numerous processes. Sample PL4481, slide FX48, Elk Creek Melange, near Covelo, California. 5 Additional specimen. Sample PL4481, slide FX48, Elk Creek
Image
—Schematic maps showing two interpretations of paleostructure along segment...

—Schematic maps showing two interpretations of paleostructure along segment...

Published: 01 February 1990
and Schoolhouse Member. Note that inferred fault is mainly covered (see Figure 4 ). CR = Colorado River; EEC = East Elk Creek; ERC = East Rifle Creek; GHM = Grand Hogback monocline; GS = Glenwood Springs; MEC = Main Elk Creek; N = Newcastle; R = Rifle; RC = Rifle Creek; S = Silt; WEC = West Elk Creek. Cross