Skip to main content

Lovering, Thomas Seward

thumbnail
Aerial view looking north along the foothills from an altitude of 7,100 feet half a mile south of Morrison, shows the common topographic expression of the post Mississippian sedimentary formations and some of the younger erosion surfaces. Colorado. Circa 1932. Figure 6 with sketch, in U.S.Geological Survey Professional paper 223. 1950.
thumbnail
Album caption and index card: Looking east at the Maxwell breccia reef near the junction of Fourmile Creek and North Boulder Creek. At this exposure the reef consists of brecciated Boulder Creek granite, moderately silicified and stained with hematite. The breccia reef has been mapped previously as pegmatite dike cutting the granite. Boulder County, Colorado. Notes: Published as figure XX-A in U.S.Geological Survey. Professional Paper 223. 1950.
thumbnail
Panoramas looking south from the south end of Teller Mountain near the Cashier Mine; glacial trenching of the Flattop peneplain is well shown. Summit County, Colorado. Circa 1927. Plate 8-B, U.S. Geological Survey, Professional paper 178. 1935.
thumbnail
Album caption and index card: Photomicrograph of intrusion breccia of group 11 from Logan mine, 5 miles west of Boulder. Highly fragmented granite and some porphyry and early vein material lie in a biotite-flecked glassy groundmass that is partly silicified and sericitized. b, Fragment of biotite latite; g, glassy groundmass. Crossed nicols. Boulder County, Colorado. Notes: Published as figure XVII-A in U.S.Geological Survey. Professional Paper 223. 1950.
thumbnail
Album caption and index card: Photomicrograph of quartz-biotite schist from Idaho Springs formation at Nederland. Original bedding (nearly vertical in photograph) is intersected by shear planes sloping down to right at about 45°, and these shears are cut by later shears sloping to the left at 60°. b, Biotite; g, garnet; m, magnetite; q, quartz; fqb, crushed feldspar, quartz, and biotite. Plain light. Boulder County, Colorado. Notes: Published as figure VII-C in U.S.Geological Survey. Professional Paper 223. 1950.
View more...
ScienceBase brings together the best information it can find about USGS researchers and offices to show connections to publications, projects, and data. We are still working to improve this process and information is by no means complete. If you don't see everything you know is associated with you, a colleague, or your office, please be patient while we work to connect the dots. Feel free to contact sciencebase@usgs.gov.