Edward A du Bray (Former Employee)
Science and Products
Filter Total Items: 16
Filter Total Items: 99
Mineral resources of the Encampment River Canyon Wilderness Study Area, Carbon County, Wyoming
No abstract available.
Authors
Edward A. du Bray, Viki Bankey, Randall H. Hill, George S. Ryan
Mineral resources of the Prospect Mountain Wilderness Study Area, Carbon County, Wyoming
No abstract available.
Authors
Edward A. du Bray, Viki Bankey, Randall H. Hill, George S. Ryan
Geology of the Silsilah ring complex and associated tin mineralization, Kingdom of Saudi Arabia
No abstract available.
Authors
E. A. Du Bray
Potassium-argon ages for plutons in the eastern and southern Sierra Nevada Batholith, California
No abstract available.
Authors
E. A. Du Bray, D. A. Dellinger
Garnet compositions and their use as indicators of peraluminous granitoid petrogenesis - southeastern Arabian Shield
Garnet, an uncommon accessory mineral in igneous rocks, occurs in seven small peraluminous granitoid plutons in the southeastern Arabian Shield; textural equilibrium between garnet and other host granitoid minerals indicates that the garnets crystallized from their host magmas. Compositions of the garnets form three groups that reflect host-granitoid compositions, which in turn reflect source comp
Authors
E.A. du Bray
Mineral resources of the Weepah Spring Wilderness Study Area, Lincoln and Nye counties, Nevada
No abstract available.
Authors
E. A. Du Bray, H. R. Blank, R. L. Turner, D. D. Gese, A.D. Harris
Jabal Silsilah tin prospect, Najd region, Kingdom of Saudi Arabia
A significant Sn deposit at Jabal Silsilah (26°07′N, 42°41′E), a prominent ring complex in the NE Arabian Shield, is associated with greisen in flat-topped cupolas of a highly evolved, zinnwaldite- and topaz-bearing alkali-feldspar granite. This granite is peraluminous, enriched in incompatible trace elements and characterized by a chondrite-normalized REE profile showing a large negative Eu anoma
Authors
E.A. du Bray
Mineral resources, geology, and geophysics of the Worthington Mountains Wilderness Study Area, Lincoln County, Nevada
No abstract available.
Authors
Edward A. du Bray, H. R. Blank, Robert H. Wood
Metallic-mineral assessment of the Jabal Habashi quadrangle, sheet 26F, Kingdom of Saudi Arabia
An interagency report prepared by the U.S. Geological Survey Saudi Arabian Mission for the Ministry of Petroleum and Mineral Resources, Kingdom of Saudi Arabia.
The work on which this report was based was performed in accordance with a cooperative agreement between the U.S. Geological Survey and the Ministry of Petroleum and Mineral Resources.
Authors
Donlad H. Richter, Michael S. Allen, E. A. Du Bray, M. Dean Kleinkopf, John S. Pallister
Results of grid sampling and large-scale geologic mapping for the Silsilah tin deposit, Saudi Arabia
No abstract available.
Authors
E. A. Du Bray, C. W. Smith, R.M. Samater
Reconnaissance geology of the Al Hufayr Quadrangle, sheet 27/41A, Kingdom of Saudi Arabia
The Al Hufayr quadrangle (27/41 A) lies at the northern edge of the Arabian Shield between lat 27 30' and 28 00' N. and long 41 00' and 41 30' E. A cataclastically foliated syenogranite, the oldest rock exposed in the quadrangle, crops out in a restricted area in the south-central part of the quadrangle. Younger, weakly metamorphosed metarhyolite and minor metabasalt, arkosic sandstone, and conglo
Authors
E. A. Du Bray, D. B. Stoeser
Science and Products
Filter Total Items: 16
Filter Total Items: 99
Mineral resources of the Encampment River Canyon Wilderness Study Area, Carbon County, Wyoming
No abstract available.
Authors
Edward A. du Bray, Viki Bankey, Randall H. Hill, George S. Ryan
Mineral resources of the Prospect Mountain Wilderness Study Area, Carbon County, Wyoming
No abstract available.
Authors
Edward A. du Bray, Viki Bankey, Randall H. Hill, George S. Ryan
Geology of the Silsilah ring complex and associated tin mineralization, Kingdom of Saudi Arabia
No abstract available.
Authors
E. A. Du Bray
Potassium-argon ages for plutons in the eastern and southern Sierra Nevada Batholith, California
No abstract available.
Authors
E. A. Du Bray, D. A. Dellinger
Garnet compositions and their use as indicators of peraluminous granitoid petrogenesis - southeastern Arabian Shield
Garnet, an uncommon accessory mineral in igneous rocks, occurs in seven small peraluminous granitoid plutons in the southeastern Arabian Shield; textural equilibrium between garnet and other host granitoid minerals indicates that the garnets crystallized from their host magmas. Compositions of the garnets form three groups that reflect host-granitoid compositions, which in turn reflect source comp
Authors
E.A. du Bray
Mineral resources of the Weepah Spring Wilderness Study Area, Lincoln and Nye counties, Nevada
No abstract available.
Authors
E. A. Du Bray, H. R. Blank, R. L. Turner, D. D. Gese, A.D. Harris
Jabal Silsilah tin prospect, Najd region, Kingdom of Saudi Arabia
A significant Sn deposit at Jabal Silsilah (26°07′N, 42°41′E), a prominent ring complex in the NE Arabian Shield, is associated with greisen in flat-topped cupolas of a highly evolved, zinnwaldite- and topaz-bearing alkali-feldspar granite. This granite is peraluminous, enriched in incompatible trace elements and characterized by a chondrite-normalized REE profile showing a large negative Eu anoma
Authors
E.A. du Bray
Mineral resources, geology, and geophysics of the Worthington Mountains Wilderness Study Area, Lincoln County, Nevada
No abstract available.
Authors
Edward A. du Bray, H. R. Blank, Robert H. Wood
Metallic-mineral assessment of the Jabal Habashi quadrangle, sheet 26F, Kingdom of Saudi Arabia
An interagency report prepared by the U.S. Geological Survey Saudi Arabian Mission for the Ministry of Petroleum and Mineral Resources, Kingdom of Saudi Arabia.
The work on which this report was based was performed in accordance with a cooperative agreement between the U.S. Geological Survey and the Ministry of Petroleum and Mineral Resources.
Authors
Donlad H. Richter, Michael S. Allen, E. A. Du Bray, M. Dean Kleinkopf, John S. Pallister
Results of grid sampling and large-scale geologic mapping for the Silsilah tin deposit, Saudi Arabia
No abstract available.
Authors
E. A. Du Bray, C. W. Smith, R.M. Samater
Reconnaissance geology of the Al Hufayr Quadrangle, sheet 27/41A, Kingdom of Saudi Arabia
The Al Hufayr quadrangle (27/41 A) lies at the northern edge of the Arabian Shield between lat 27 30' and 28 00' N. and long 41 00' and 41 30' E. A cataclastically foliated syenogranite, the oldest rock exposed in the quadrangle, crops out in a restricted area in the south-central part of the quadrangle. Younger, weakly metamorphosed metarhyolite and minor metabasalt, arkosic sandstone, and conglo
Authors
E. A. Du Bray, D. B. Stoeser