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The AAPG/Datapages Combined Publications Database

Showing 1,447 Results. Searched 201,044 documents.

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Acoustic Tomography for Reservoir Surveillance: Reservoir Characterization and Modeling

J. H. Justice, M. E. Mathisen, A. A. Vassiliou, S. Singh , P. S. Cunningham, J. R. Bulau

AAPG Special Volumes

... propagating through the medium to be imaged. In medical CAT scanning, the attenuation of X-rays propagating through the body to be imaged is the physical...

1991

Strategy for Developing and Calibrating Shale and Mudstone Chemostratigraphies Using Hand-Held X-ray Fluorescence Units, #40634 (2010)

Harry Rowe, Niki Hughes

Search and Discovery.com

..., Zn, etc.). THE X-RAY SOURCE (RHODIUM IN THIS CASE) EMITS HIGH-ENERGY X-RAYS THAT KNOCK INNER-SHELL ELECTRONS OUT OF THEIR SHELLS. 30000 0.4 0 0...

2010

Using B4 LiDAR and CRN Age Data to Constrain Slip Rates Along the San Andreas Fault System at Millard Canyon, San Gorgonio Pass; #41652 (2015)

Ian Desjarlais, Doug Yule, Richard Heermance

Search and Discovery.com

... of in-situ Cosmogenic Radionuclides (CRN) by spallation reactions. Primary cosmogenic rays originate in outer space from many sources including supernovae...

2015

When the Syn-Depositional Climatic Variations Influence My Source Rock Properties … The Case Study of the Vaca Muerta, #51523 (2018).

Alain Lejay, Johannes Monkenbusch, Lionel Martinez, Gregory N. Boitnott, Laurent Louis, François Gelin

Search and Discovery.com

... (spectral gamma-rays and density), CT-scans and scratch tests for geomechanical studies. For gas wells only, they also comprise a continuous TOC...

2018

Brackish-water ichnological trends in a microtidal barrier island…embayment system, Kouchibouguac National Park, New Brunswick, Canada

Tyler E. Hauck, Shahin E. Dashtgard, S. George Pemberton, Murray K. Gingras

PALAIOS

... transmission of X-rays such that the resultant image reflects internal structures in the sediment and not artifacts of the container (i.e....

2009

Petrological, Geochemical, and Statistical Analysis of Eocene–Oligocene Sandstones of the Western Thrace Basin, Greece and Bulgaria

Luca Caracciolo, Hilmar Von Eynatten, Raimon Tolosana-Delgado, Salvatore Critelli, Piero Manetti, Peter Marchev

Journal of Sedimentary Research (SEPM)

...) and the original variable axes (as rays) are projected onto the plane defined by the first two PC. For compositional data, Aitchison (1997) showed that a valid...

2012

Brackish and Non-Marine Miocene in Southeastern Texas

H. B. Stenzel , F. E. Turner , C. J. Hesse

AAPG Bulletin

... of their tolerance of low salinity. Mixed with the fossil oyster shells one finds teeth of rays (Plinthicus and Rhinoptera) and sea cows (Desmostylus sp...

1944

Thorium-to-Uranium Ratios as Indicators of Sedimentary Processes: Example of Concept of Geochemical Facies

John A. S. Adams , Charles E. Weaver

AAPG Bulletin

... the gamma rays from the thorium series, the uranium series, and potassium-40. In addition to providing all the information obtainable from a conventional...

1958

Chapter 14: Gravity, Seismic Reflection, and Tomographic Constraints on the Subduction-to-Strike-Slip Transition at the Southeastern Caribbean Plate Boundary Zone

Tricia G. Alvarez, Paul Mann, Carlos A. Vargas, Lesli J. Wood

AAPG Special Volumes

... formulas (Nolet, 1981). Traveltime tables are used to compute travel-times of the respective rays, correct station elevations and determine source...

2021

Petrogenesis of Early Cambrian Reef Limestones, Labrador, Canada

Noel P. James, Colin F. Klappa

Journal of Sedimentary Research (SEPM)

... (ooids, archaeocyathans, and the alga Renalcis). Synsedimentary cements, localized to reefs, are: 1) rays or botryoids in which each acicular crystal...

1983

Outcrop-to-Subsurface Correlation of the Cretaceous Cedar Mountain and Dakota Formations, Southern Uinta Basin

Mary L. McPherson, Brian S. Currie, Joshua P. Dark, Justin S. Pierson

Rocky Mountain Association of Geologists

... in the study area support this interpretation. Correlation Model Outcrop gamma rays were acquired with a scintillometer and the corresponding...

2008

Bacterial decomposition of avian eggshell: A taphonomic experiment

Denise L. Smith, James L. Hayward

PALAIOS

.... Preliminary trials with boiling water, bleach, hydrogen peroxide, alcohol, and x-rays showed that x-rays sterilized both the inside and outside...

2010

Trend Areas and Exploration Techniques: South-Texas Uranium: Geologic Controls, Exploration Techniques, and Potential

Kendell A. Dickinson, Joseph S. Duval

Houston Geological Society

... by delayed and captured gamma rays using a Cf252 neutron source: Econ. Geol., vol. 67, pp. 579-591. Offield, T. W., 1976, Remote sensing in uranium...

1977

Concretions as sources of exceptional preservation, and decay as a source of concretions: Examples from the Middle Devonian of New York

Donald D. Wilson, Carlton E. Brett

PALAIOS

... of the sulfide. Reactive iron in the anoxic zone is reduced to Fe2+. Sulfate reduction is basically a FIGURE 4—X-rays of specimen P in both: A) 3-D...

2013

Early Cretaceous Aptian charcoal from Xinchang Petrified Wood National Geopark of Zhejiang Province, eastern South China

Feng-Qi Zhang, Han-Lin Chen, Geoffrey E. Batt, Zheng-Xiang Li, Shu-Feng Ya

PALAIOS

.... 4E) with obliquely oriented, slitlike pores (Fig. 4F). The xylem rays of the material are uniseriate and mostly 2–5 cells thick. Cross-fields are 12...

2014

Sedimentology of Great Salt Lake

M. Dane Picard, Lee R. High Jr.

Utah Geological Association

... nucleus with well developed clear radial aragonite rays. Transmitted light, uncrossed nicols. Figure 11. Cerebroid oolite, Saitair Resort. The oolite...

1985

Pelagic Limestones of the Oberalm Beds (Upper Jurassic - Lower Cretaceous), Austrian Alps

Robert E. Garrison

CSPG Bulletin

... be rays from fragmented coccoliths; where separated from their parent discs they could not be easily recognized as skeletally derived. Other small...

1967

Shale Gas Development-Comprehensive Study in Indonesia

Hadist Ginanjar, Samuel Zulkhifly

Indonesian Petroleum Association

... and molecular structure of a crystal, in which X-rays bombard the crystalline atoms and result in a diffraction pattern in many specific directions...

2014

Outcrop-to-Subsurface Correlation of the Cretaceous Cedar Mountain and Dakota Formations, Southern Uinta Basin

Mary L. McPherson, Brian S. Currie, Joshua P. Dark, Justin S. Pierson

Utah Geological Association

... support this interpretation. Correlation Model Outcrop gamma rays were acquired with a scintillometer and the corresponding sections were described...

2008

Crustal Structure and Evolution of an Explosive Silicic Volcanic System at Yellowstone National Park

Robert B. Smith, Lawrence W. Braile

Wyoming Geological Association

... propagating refracted rays and similar to that of the thermally undisturbed lower crust of the surrounding Rocky Mountains. This suggests...

1982

High-Quality 3-D MicroCT Imaging of Source Rocks … Novel Methodology to Measure and Correct for X-Ray Scatter

Alexander Katsevich, Michael Frenkel, Qiushi Sun, Shannon L. Eichmann, Victor Prieto

Unconventional Resources Technology Conference (URTEC)

... modality, is based on measuring the attenuation of X-rays as the source and detector rotate around the patient (Townsend, 2010). Through sophisticated...

2018

Analysis of Geophysical Well Logs from the Mariano Lake-Lake Valley Drilling Project, San Juan Basin, Northwestern New Mexico

James H. Scott

AAPG Special Volumes

... scatter, a small percentage of gamma rays originating from thorium-series isotopes also appears in the uranium and potassium channels, and a small...

1986

Coalbed Methane Applications of Wireline Logs: Chapter 13

Patrick L. Scholes, Dave Johnston

AAPG Special Volumes

... increases). This is simply because it is easier for gamma rays to find their way from the source through the rock to the detector when porosity...

1993

Nuclear magnetic resonance and x-ray microtomography pore-scale analysis of oil recovery in mixed-porosity carbonates

Hubert King, Michael Sansone, John Dunsmuir, Nicole Callen, Pavel Kortunov, Ye Xu, Antonio Buono, Bo Gao, and James Kralik

AAPG Bulletin

... experiments. The fiberglass body of this holder is relatively transparent to x-rays. The holder was fitted at top and bottom with specially designed...

2020

Cave Pearls and Pisoliths: A Sedimentological Comparison

Carol A. Hill

West Texas Geological Society

..., Brick-like texture radial rays in Triassic pisolites of Lombardy, Italy: a clue to distinguish ancient aragonitic pisolites: Sedimentary Geology, v...

1992

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