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Geology and mineral resources of central Antioquia Department (Zone IIA), Colombia
R.B. Hall, Jairo Alvarez A., Hector Rico H.
1973, Open-File Report 73-97
This report summarizes the geology of an area of some 6000 square kilometers in the northern part of the Central Cordillera of the Colombian Andes. The area, in north-central Department of Antioquia, was mapped between 1964 and 1968 as part of the Inventario Minero Nacional (IMN) project. Mineral resources are...
Geology and evaluation of tungsten anomalies, Buhairan-Abu Khurg area, southeastern part of the Uyaijah ring structure, Kingdom of Saudi Arabia
F. C. W. Dodge
1973, Open-File Report 73-60
Previous geochemical exploration has indicated areas in the Precambrian Al Uyaijah ring structure for further investigation. This report encompasses the results of geologic and geochemical investigations made in a 40 square kilometer area located on the southeast perimeter of the ring structure, an area where previous geochemical exploration revealed anomalous...
Geologic setting and chemical characteristics of hot springs in central and western Alaska
Thomas P. Miller, Ivan Barnes, William Wallace Pattan Jr.
1973, Open-File Report 73-188
Numerous hot springs occur in a variety of geologic provinces in central and western Alaska. Granitic plutons are common to all the provinces and the hot springs are spatially associated with the contacts of these plutons. Of 23 hot springs whose bedrock geology is known, all occur within 3 miles...
Salt structure and sediment thickness, Texas-Louisiana continental slope, northwestern Gulf of Mexico
Raymond G. Martin Jr.
1973, Open-File Report 73-179
The objectives of this study were to determine the general configuration of the salt surface beneath the Texas-Louisiana continental slope and to isopach the Mesozoic-Cenozoic sedimentary section lying upon it. The structure contour map discloses that the entire slope province between the shelf edge and Sigsbee Escarpment is underlain by salt...
Geologic appraisal of Paradox basin salt deposits for water emplacement
Robert J. Hite, Stanley William Lohman
1973, Open-File Report 73-114
Thick salt deposits of Middle Pennsylvanian age are present in an area of 12,000 square miles in the Paradox basin of southeast Utah and southwest Colorado. The deposits are in the Paradox Member of the Hermosa Formation. The greatest thickness of this evaporite sequence is in a troughlike depression adjacent...