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Seismic Reflection, EdgeTech SB-424 Chirp tracklines collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior during USGS field activity 2018-043-FA, (Esri polyline shapefile, GCS WGS 84)

Dates

Publication Date
Start Date
2018-09-18
End Date
2018-09-25

Citation

Andrews, B.D., Barnhardt, W.W., Foster, D.S., Irwin, B.J., and Nichols, A.R., 2020, High-resolution geophysical data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, U.S. Geological Survey Field Activity 2018-043-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9K4HX8V.

Summary

In September 2018, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, conducted high-resolution geophysical mapping and sediment sampling to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in the early 20th century, with wide-reaching consequences that have continued into the present. Mapping was focused offshore of the town of Gay on the Keweenaw Peninsula of Michigan, where ongoing erosion and re-deposition of the stamp sands has buried miles of native, white-sand beaches. Stamp sands are also encroaching onto Buffalo Reef, a large area of cobble/boulder [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

2018-043-FA_Edgetech424_Tracklines_browse.jpg
“browse image”
thumbnail 479.27 KB image/jpeg
Shapefile: 2018-043-FA_Edgetech424_Tracklines.zip
2018-043-FA_Edgetech424_Tracklines.CPG 5 Bytes
2018-043-FA_Edgetech424_Tracklines.dbf 109.54 KB
2018-043-FA_Edgetech424_Tracklines.prj 135 Bytes
2018-043-FA_Edgetech424_Tracklines.sbn 764 Bytes
2018-043-FA_Edgetech424_Tracklines.sbx 156 Bytes
2018-043-FA_Edgetech424_Tracklines.shp 2.19 MB
2018-043-FA_Edgetech424_Tracklines.shx 588 Bytes

Purpose

This dataset contains trackline navigation for approximately 272 km of chirp seismic-reflection data collected by the U.S. Geological Survey during cruise 2018-043-FA along Traverse Bay, Lake Superior. This information allows for spatial correlation of chirp seismic-reflection profiles images with other geophysical and sample data for investigating lake-floor morphology and stratigraphy in the area.

Additional Information

Shapefile Extension

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