Hydrothermal Alteration of Near-Surface Sediments, Guayamas Basin, Gulf of California

Paul M. Stout, Andrew C. Campbell

Pacific Section SEPM

... or an attached particulate phase. Euhedral rhombs of protodolomite occur as individual crystals, clusters of interpenetrating crystals, and replacement...

Study of the Fabric of Fine-Grained Sediments with the Scanning Electron Microscope

J. E. Gillott

Journal of Sedimentary Research (SEPM)

... in Mississippian calcilutites and pseudobreccias: Jour. Sedimentary Petrology, v. 29, p. 365-376. BATHURST, R. G. C., 1964. The replacement of aragonite...

Porosity Loss, Fluid Flow, and Mass Transfer in Limestone Reservoirs: Application to the Upper Jurassic Smackover Formation, Mississippi1

Ezat Heydari

AAPG Bulletin

... cement, (6) postbitumen calcite cement, (7) replacement dolomite, and (8) replacement anhydrite. Twenty-four samples that contained no marine...

Appendix C: Instructions for Assessing Phase and Polarity

Alistair R. Brown

AAPG Special Volumes

... or by a layer with interfaces top and base. The probable cause of a package of high-amplitude reflections should be one of the following: Impedance Increase...

ABSTRACT: Geometric or Dynamic Restoration? Lessons from Analogue Models, by H. Koyi; #91021 (2010)

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ABSTRACT: Normal Faulting Beneath a Ductile Layer: Experimental Modeling of Deformation Patterns in the Cover Sequence, by M. O. Withjack and J. S. Callaway; #91021 (2010)

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ABSTRACT: Investigation of the Weathering Layer Using Seismic Refraction and High Resolution Seismic Reflection Methods, NE of Riyadh City, by Al-Anezi, Ghunaim; Al-Amri, Abdullah; Zaman, Haider; #90141 (2012)

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Diagenetic Heterogeneity and Reservoir Quality: Fluvial, Deltaic, and Turbiditic Sandstone Reservoirs, Potiguar and Reconcavo Rift Basins, Brazil

Marco A. S. Moraes , Ronald C. Surdam

AAPG Bulletin

... of primary porosity and replacement of framework grains by calcite. (5) Dissolution of calcite cement and framework grains. (6) Replacement of calcite...

Genesis and Environment of Deposition of the Meagher Formation in Southwestern Montana

Lawrence R. Lebauer

Journal of Sedimentary Research (SEPM)

... impurities which outline the layers. Even when this texture is apparent it is difficult to follow a single layer around the nucleus because the layers appear...

Carbonate Replacements After Sulfate Evaporites in the Middle Miocene of Egypt

Catherine Pierre, Jean Marie Rouchy

Journal of Sedimentary Research (SEPM)

.... 1985; Monty et el. 1987). These carbonates were described and mapped around the Gebel Zeit as an intragypsiferous limestone layer which could...

Submarine Geology of Ranger Bank, Mexico

K. O. Emery

AAPG Bulletin

... a layer of uniform temperature of 16°C., extending from the surface to 30 fathoms, testifying to the turbulence of the upper water. After winter storms...

Diagenesis of Sandstones at Shale Contacts and Diagenetic Heterogeneity, Frio Formation, Texas (1)

KEITH B. SULLIVAN and EARLE F. MCBRIDE

AAPG Bulletin

.... 15, p. 281-346. Eberl, D., 1977, Hydrothermal transformation of sodium and potassium smectite into mixed-layer clay: Clays and Clay Minerals, v. 25...

Regional Diagenesis - An Important Influence in Porosity Development and Hydrocarbon Accumulations within the Hutton Sandstone, Eromanga Basin

P. M. Green, P. J. Eadington, P. J. Hamilton, D. C. Carmichael

Petroleum Exploration Society of Australia (PESA)

..., garnet, zircon, hornblende and opaques. The clay mineral assemblage is dominated by kaolinite with lesser illite, mixed-layer illite/smectite...

Laterite Revisited: Mode of Formation

Abd. Rashid Ahmad, Teh Guan Hoe

Geological Society of Malaysia (GSM)

... and with time filling up the vesicles. Silicate minemls should be dissolved so that partial or total replacement by iron oxide could occur. Evidence of silica...

Orthophosphate: Effect on the Relative Stability of Aragonite and Magnesian Calcite During Early Diagenesis

Lynn M. Walter, Jeffrey S. Hanor

Journal of Sedimentary Research (SEPM)

...) and on Guam are more susceptible to replacement by calcite than are the magnesian calcites. The coralline algae, which have the highest MgCO3 content...

Extended Abstract: Combining Rock Physics Templates with Seismic Inversion to Characterize the Hydrocarbon Reservoir beneath the Kanywataba Prospect, Semliki Basin

Justin Jordan Pidho, John Mary Kiberu, Denis Okello, Anthony O'biale Ayaa

Africa Energy and Technology Conference, 2016

...) analysis, seismic inversion and fluid replacement modeling. The interest in determining lithology, porosity and fluid type of Kanywataba reservoir...

“The Relationship of Permian San Andres Facies to the Distribution of Porosity and Permeability in the Garza Field, Garza County, Texas”

Gregory P. Hild

West Texas Geological Society

... with a third layer of highly organic micrite. Intertidal Facies Within the intertidal environment six lithologic and biogenic facies have been...

Lithostructural Setting of the Contact Lake Gold Deposit: Controls on Vein Formation and Ore Distribution

Christopher B. Lee, R. Gwilym Roberts

Saskatchewan Geological Society

... in granite; V4 shear and extensional veins and associated potassic alteration halo; and V5 fracture-fill and replacement veins overprinting V4 extensional...

Peritidal Carbonates and Evidence for Vanished Evaporites in the Lower Ordovician Cool Creek Formation-Arbuckle Mountains, Oklahoma (1)

Jack W. St. John, Jr., David E. Eby

GCAGS Transactions

... growing after deposition to form a continuous mat at the top of the sample. D. Thin algal crust (between arrows). Dark organic layer contains algal...

New Exploration Targets in the Northern Midland Basin: Depositional and Diagenetic History of West Smyer Field, Hockley County, Texas

A.F. Griffin, J.A. Breyer

West Texas Geological Society

.... Micritization Many of the brachiopod, crinoid, and fusulinid remains show replacement of the original shell material by micrite. The fossils maintain...

A Spherulitic Fabric in Selectively Dolomitized Siliciclastic Crustacean Burrows, Northern Kuwait

A. Gunatilaka, A. Al-Zamel, D. J. Shearman, A. Reda

Journal of Sedimentary Research (SEPM)

... ooids: Canadian Petroleum Geologists Bull., v. 32, p. 190-200. KENDALL, A. C., 1977, Fascicular optic calcite: a replacement of bundled acicular...

Mn-Fe Coatings on Saprolite Fracture Surfaces

Charles E. Weaver

Journal of Sedimentary Research (SEPM)

.... Colloid Sci., v. 19, p. 347-359. NORRISH, K., AND R. M. TAYLOR, 1961, The isomophous replacement of iron by aluminum in soil geothites: Jour. Soil...

"Big Injun" Oil and Gas Production in North-Central West Virginia

E. E. Ruley

AAPG Bulletin

... calcite fragments. The apparent replacement of angular calcite fragments may be due to the destruction of original calcite structures by diagenetic...

Some Applications of Pure Seismology to Geological Problems

L. Don Leet

Tulsa Geological Society

... BY TRIAL TRAVEL TIMES Thickness (km.) Layer or Zone Poisson's ratio Velocity km/sec. From P From S     P S 16 15 Layer 1 .27 6.13 3.45 13 10...

Shale Dehydration, Salinity, Cracking, and Migration

Charles E. Weaver

AAPG Special Volumes

.... Montmorillonite layers contract during burial and the released interlayer water is available to aid in hydrocarbon migration. Layer contraction and water...