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The AAPG/Datapages Combined Publications Database

Showing 5,353 Results. Searched 196,194 documents.

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Mid-Cretaceous Black Shales: A Result of Excessive Fertility or Global Anoxia?: ABSTRACT

Tim Bralower, Hans R. Thierstein

AAPG Bulletin

... (heavy metal enrichment in organic tissue), and in areas of hydrothermal activity. The various environments can be characterized by the relations between...

1982

Massive Zinc and Iron-Rich Sulfide Deposits Associated with Hot Springs, Juan de Fuca Ridge: ABSTRACT

J. R. Delaney, R. A. Koski, D. A. Clague, J. L. Bischoff, W. R. Normark

AAPG Bulletin

... associated with previously described hydrothermal-vent systems. The presence of pa agonite coatings on basalt recovered with the sulfides...

1982

Interpretation of Well Logs at Cerro Prieto Geothermal Field: ABSTRACT

Susan E. Halfman, Marcelo Lippmann, Reuben Zewler

AAPG Bulletin

... logs. In the proposed model of hydrothermal flow, hot brines enter End_Page 575------------------------------ the field at 5,000 ft (1,525 m) or more...

1982

Geothermal Resources of North Dakota: ABSTRACT

Kenneth L. Harris, F. L. Howell, Laramie M. Winczewski, Brad L. Wartman

AAPG Bulletin

... the hydrothermal resources of North Dakota. Intially, emphasis was placed on using existing data on file with state and federal agencies. Oil and gas...

1982

Rb-Sr Dating of Illite Diagenesis: ABSTRACT

John P. Morton, Leon E. Long

AAPG Bulletin

... deep burial. Possibly diagenesis was accomplished by hydrothermal fluids moving toward the craton out of the Ouachita geosyncline, which at that time...

1982

Heavy Mineral and Manganese Nodule Distribution in Areas Adjacent to Taiwan: ABSTRACT

Ju-Chin Chen, Fei-Jan Lin

AAPG Bulletin

... are not related to hydrothermal activity. These nodules may have originated by catalytic oxidation and absorption of Mn, Fe, and other transition elements...

1982

Volcanogenic Manganese Deposits in Western Cordillera: ABSTRACT

Randolph A. Koski, James R. Hein

AAPG Bulletin

... by hydrothermal-volcanogenic processes. These deposits can be grouped into five categories on the basis of the manganese mineral assemblage, lithologic...

1982

Microtremor Studies in Roosevelt and Beowawe Geothermal Areas: ABSTRACT

Alfred L. Liaw, Wayne Suyenaga

AAPG Bulletin

... generated by pressure variations and microcracking of the hydrothermal system have been considered to be direct indicators of geothermal reservoirs...

1982

Polymetallic Sulfides of Ocean Floor--A New Mineral Resource of the Pacific?: ABSTRACT

Alexander Malahoff

AAPG Bulletin

... within coalesced inactive "smokers" or chimneys, tens of meters high and several meters in diameter, formed during a period of intensive hydrothermal...

1982

Al-Hydroxy Smectite: An Intermediate Between Smectite and Mixed-Layer Illite/Smectite Formed in Burial Diagenesis of Pelitic Sediments?: ABSTRACT

Herman E. Roberson, Bruce Sass

AAPG Bulletin

... for periods of 7 and 28 days. The solutions used for this initial hydrothermal treatment were kept K ± free to prevent the formation of non-expanding illite...

1982

Uranium in Igneous Rocks of Central Davis Mountains, West Texas: ABSTRACT

Wendy E. Schaftenaar, Thomas T. Tieh

AAPG Bulletin

... abundant in welded tuffs, in contrast to lava flows and shallow intrusions. Hydrothermal alteration redistributes uranium; unaltered rocks have...

1983

Association of Coal Metamorphism and Hydrothermal Mineralization in Rough Creek Fault Zone and Fluorspar District, Western Kentucky: ABSTRACT

James C. Hower, Faith L. Fiene, Eric J. Trinkle

AAPG Bulletin

...Association of Coal Metamorphism and Hydrothermal Mineralization in Rough Creek Fault Zone and Fluorspar District, Western Kentucky: ABSTRACT James C...

1983

Fluid Inclusions in Burlington Limestone (Middle Mississippian)--Evidence for Multiple Dewatering Events from Illinois Basin: ABSTRACT

F. D. Smith, R. J. Reeder, W. J. Meyers

AAPG Bulletin

... was complex, with several generations of hydrothermal brine migration into the porous Burlington carbonates along the northwestern edge of the basin. Two...

1984

Carbonate Dissolution During Late-Burial Diagenesis of the Terumbu Limestone (Miocene), East Natuna Basin, South China Sea, Indonesia: ABSTRACT

George J. Grabowski, Jr., Robert M. Kick, Donald A. Yurewicz

AAPG Bulletin

... Terumbu Limestone. We envision that fluoride-bearing hydrothermal fluids, derived from the underlying granitic basement, selectively dissolved...

1985

Sedimentary Basin Thermal Histories Through 40Ar/39Ar Analysis of Detrital Microcline: ABSTRACT

T. Mark Harrison

AAPG Bulletin

... for samples above a present dep h of about 6 km, although hydrothermal activity is evident in deeper material. Microcline separates have been obtained...

1985

Wall-Rock Alteration and Uranium Mineralization in Parts of Thomas Range Mining District, San Juan County, Utah, and Its Significance in Mineral Exploration: ABSTRACT

Hasan Mohammad

AAPG Bulletin

... investigations may influence the initiation of future exploration programs in the Thomas Range mining district. Hydrothermal fluids of deep-seated magmatic...

1985

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