Skip to main content
Advanced Search

Filters: Tags: {"type":"Place"} (X) > Categories: Image (X) > partyWithName: Ferguson, Henry Gardiner (X)

62 results (13ms)   

View Results as: JSON ATOM CSV
thumbnail
Quartz stringers in footwall of vein, Eldorado Mine, near bottom of shaft. Stringers are parallel and at angles to the vein but cross the vertical cleavage of the country rock. Hanging wall marked by later shear. Sierra County, California. 1924. Plate 12-A, in U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Hills of volcanic rocks north of Belmont road. Nye County, Nevada. 1915. Plate 4 in U.S. Geological Survey. Bulletin 723. 1924.
thumbnail
Limestone conglomerate of Dunlap formation (right) unconformable on limestone of Luning formation, Garfield Hills, ridge 4 miles east of Garfield Peak. Mineral County, Nevada. 1937. Plate 4-A, in U.S.Geological Survey Professional paper 258. 1956.
thumbnail
Round Rock. A typical erosion form of the Round Rock breccia. Nye County, Nevada. 1915. Plate 3-A in U.S. Geological Survey. Bulletin 723. 1924.
thumbnail
Manhattan Gulch between Mount Moriah and Wolf Tone Point, showing placer workings. Nye County, Nevada. 1915. Plate 17-A in U.S. Geological Survey. Bulletin 723. 1924.
thumbnail
Quartz displaced by minor fault that does not cut the footwall, Eldorado Mine, upper tunnel on bullion vine. Sierra County, California. 1924. Plate 17-A, in U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Vein with well-marked walls, No. 4 level. Country rock outside of walls is massive and unsheared. Material between the walls consists of sheared and altered rock with lenses of quartz. Left-hand mass of quartz is crushed and broken by later faulting and the right is roughly banded following an older fault. Plumbago Mine. Sierra County, California. 1924. Plate 15-A, in U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Ribbon quartz cut by transverse sheeting, Kate Hardy mine, adit level. Sierra County, California. 1924. Plate 18-C, in U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Front of Toquima Range, looking north from western part of Manhattan district. Nye County, Nevada. 1915. Plate 6-C in U.S. Geological Survey. Bulletin 723. 1924.
thumbnail
Eocene gravel at old hydraulic workings south of Allegany, California. Sierra County, California. 1924. Plate 5-C, U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Pipe workings on the upper part of Mustang claim of the Train-Chase lease. Nye County, Nevada. 1915. Plate 14-B in U.S. Geological Survey. Bulletin 723. 1924.
thumbnail
Outcrop of vein in footwall side of Sixteen to One vein, in road cut near mine office. Drag of slates on hanging wall side indicates reverse movement. Sierra County, California. 1924. Plate 7-B, in U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Big Pine glory hole. Nye County, Nevada. 1915. Plate 9-A in U.S. Geological Survey. Bulletin 723. 1924.
thumbnail
Typical exposure of serpentine, nearly bare of vegetation in the valley of Kanaka Creek. Sierra County, California. 1924. Plate 5-B, U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Shoshone thrust: Massive dolomite of Luning formation (left, prominent outcrops) thrust over thin-bedded limestone of Sunrise formation (right). Shows spike of dolomite along thrust plane; south wall of Milton Canyon, Shoshone Mountains. Nye County, Nevada. 1937. Plate 10-C, in U.S.Geological Survey Professional paper 216. 1949.
thumbnail
Vein with lower strand showing crinkly banding and strand above containing fragments of altered wall rock, Eldorado Mine, adit level. Along hanging wall in right hand upper corner is breccia containing quartz fragments in a matrix of carbonate and mariposite. Sierra County, California. 1924. Plate 19-B, in U.S.Geological Survey Professional paper 172. 1932
thumbnail
Crumpled hornblende schist of Tightner formation between Morning Glory and Osceola Mines. Sierra County, California. 1924. Plate 2-A, in U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Fault plane in quartz passing from footwall to hanging wall, Sixteen to One Mine, 800- foot level. Vein is in the unusual condition that neither wall is formed by a fault and stringers extend out into both foot and hanging walls. The straight boundary along a small part of the footwall (to the right of the center) may be due to a fault prior to the introduction of the quartz as it does not cut the quartz. Sierra County, California. 1924. Plate 16-B, in U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Walls of vein due to post-mineral movement, Plumbago Mine, no. 4 level. The quartz is cut by the hanging wall but on the footwall side grades into stringers which are cut off by the footwall fault. Sierra County, California. 1924. Plate 15-B, in U.S.Geological Survey Professional paper 172. 1932.
thumbnail
Front of the Toiyabe Range from Toquima Range, showing fault scarp topography. Nye County, Nevada. 1915. Plate 6-B in U.S. Geological Survey. Bulletin 723. 1924.