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The AAPG/Datapages Combined Publications Database
Showing 364 Results. Searched 200,293 documents.
Abstract: Fall and Initial Examination of the Sept. 25, 2009 Grimsby H5 Ordinary Chondrite; #90172 (2014)
Phil J. A. McCausland, Peter G. Brown, Alan R. Hildebrand, Roberta L. Flemming, Ivan Barker, Desmond Moser, Gordon Osinski, David W. Holdsworth, Jim Renaud, Wayne Edwards
Search and Discovery.com
.... The fireball trajectory and peak brightness greater than that of the full moon indicates that a multi-hundred kg object on a 27° inclined Apollo...
2014
Energy Minerals in Near-Earth Asteroids, #80054 (2009)
Dante S. Lauretta
Search and Discovery.com
... - brightness, rough size, rough albedo, evidence of regolith Spectroscopy - taxonomy, mineralogy, heterogeneity of surface Near-Infrared Spectroscopy...
2009
Unconventional Reservoir Characterization with Upscaled Permeability Using SEM, #41454 (2014).
Mehmet Cicek, Deepak Devegowda, Faruk Civan, Richard F. Sigal
Search and Discovery.com
... into the sample. Amount of scattered electrons determines the brightness of that spot in the SEM image. High-density minerals, especially metallic minerals...
2014
Reservoir Prediction in Ibhubesi Gas Field, Block 2A, Orange Basin, West Coast of South Africa, #11232 (2019).
Given Skosana,
Search and Discovery.com
... extraction are used for the reservoir prediction. • The sum of negative amplitude attributes surface extraction measures the brightness of the seismic...
2019
Variation in textural properties of aplitic kaolin from Kinta Valley
Khong Ling Han, Hareyani Zabidi, Kamar Shah Ariffin
Geological Society of Malaysia (GSM)
... properties such as plasticity, brightness, firing and rheological behavior. This paper presents an investigation on the textural properties of aplitic...
2020
Quantitative Mineralogical Characterization of Sandstones by Back-Scattered Electron Image Analysis
A. Dilks, S. C. Graham
Journal of Sedimentary Research (SEPM)
... exceptionally uniform brightness throughout the BSE image, End_Page 347------------------------ even at low magnifications. The signal from the BSE detector...
1985
A Simple Autocorrelation Algorithm for Determining Grain Size from Digital Images of Sediment: RESEARCH METHODS PAPERS
David M. Rubin
Journal of Sedimentary Research (SEPM)
... by overlapping of grains (which can cause partially covered grains to appear smaller than they are) or touching of grains of the same color or brightness...
2004
Utility of Coal Seams as Genetic Stratigraphic Sequence Boundaries in Nonmarine Basins: An Example from the Gunnedah Basin, Australia
Douglas S. Hamilton , N. Z. Tadros
AAPG Bulletin
... of coal seams using lithotype profiles (often referred to as brightness profiles) is a well-established technique in the coal industry. Because...
1994
Red-bed bleaching in a CO2 storage analogue: Insights from Entrada Sandstone fracture-hosted mineralization
Jeremy C. Rushton, Doris Wagner, Jonathan M. Pearce, Christopher A. Rochelle, Gemma Purser
Journal of Sedimentary Research (SEPM)
... and abundant travertine deposits (Allis et al. 2002). The Graben boundary faults are sets of en echelon normal-fault systems, which offset the Jurassic...
2020
Quantifying river avulsion activity from satellite remote sensing: Implications for how avulsions contribute to floodplain stratigraphy in foreland basins
Jeffery M. Valenza, Douglas A. Edmonds, Gary S. Weissmann
Journal of Sedimentary Research (SEPM)
... spectral bands representing brightness, greenness, and wetness (Fig. 2B). We define avulsion activity in each TCT image by applying three thresholds—we...
2022
Quantitative Image Analysis For Geologic Core Description
Roger J. Barnaby
Journal of Sedimentary Research (SEPM)
...—such as lithology, bedding, grain size, sorting, and porosity—are expressed in geologic cores by changes in color, brightness, and texture. Quantitative...
2017
Visualization of the Internal Structure of the Massive Division in Experimental Sediment-Gravity-Flow Deposits by Mapping of Grain Fabric
Hajime Naruse, Fujio Masuda
Journal of Sedimentary Research (SEPM)
... sections and the matrix using the k-means clustering classification scheme (Jain and Dubes 1998), which is a brightness-based pixel classification...
2006
Advanced Technology Improves Natural Fracture Prediction - Workshop Summary
Doug Pachen, Rob Finley, Bob Heim, Steve Laubach, Bob Hardage
PTTC
..., authigenic and detrital quartz tend to exhibit different brightness in luminescence. SEM-based cathodoluminescence (CL) is more rapid, clear, and accurate than...
1998
Petrophysical Evaluation of Carbonates from the Weyburn Oil Field Using Synchrotron X-Ray Computed Microtomography
Chad Glemser, Tom Kotzer, , Steve Whittaker, and Chris Hawkes
Saskatchewan Geological Society
... as observed through variations in grey-levels, with black representing air space (porosity) and increasing brightness correlated with increasing phase...
2006
Application of the Zeiss TGA 10 Particle-Size Analyzer in the Exploration of Stanniferous Placers
W. W.-S. Yim
Geological Society of Malaysia (GSM)
... for input of numbers requested by the display. Every input must be terminated withl--1 4 Power switch 5 Brightness control of measuring diaphragm...
1986
Seismic monitoring using compact phased arrays: CO2 sequestration monitoring
Jian Zhang, Elige B. Grant, Paul A. Nyffenegger, Mark A. Tinker, Kevin D. Hutchenson, Don C. Lawton
International Meeting for Applied Geoscience and Energy (IMAGE)
... search for signal brightness (detection SNR) similar to the SourceScanning Algorithm (SSA) defined in Kao and Shan (2004) identifies potential event...
2022
An Introduction to Deep Learning: Part III
Lasse Amundsen, Hongbo Zhou, Martin Landrø
GEO ExPro Magazine
... points essentially are light readings – the minuscule change in brightness captured when a planet passed in front of a star. Researchers from Google...
2018
Sonic Saturation Inversion and AVO Modeling in the Tunu Gas Field
Patrick Fouchard, Scott Leaney, Sugimin Harsono
Indonesian Petroleum Association
..., intercept, product and stack traces are shown for both cases. An increase in intercept reflection magnitude, AVO gradient and stack brightness...
1996
Integrated carbonate reservoir types modeling based on the PRT deep learning and multi-parameters seismic inversion and its application
Chen Xin, Song Jiawen, Liu Qing, Sun Qian, Zhao Min, Qi Qunli, Weixiang Zhong, Dengyi Xiao, Tang Zichang, Fuli An, Wang Bo, Fan Hanzhou, Li Xiaoliang, Huang Kongzhi, Liu Qiang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., with argillaceous pack-stone and wackstone, micro pores, the color of FMI logging become thin brightness and darkness interbed, and most of T2 spectrum...
2023
TECHNOLOGY
Henk Kombrink, Ezdeen Ibrahim, Guy M. Oliver, Milton Sanclemente
GEO ExPro Magazine
... Analysis & Key Surface Lithotype Calibrated Lithotype Mn/Sr Al Zr/Nb Mg Fe Markers Det. Log Gamma Ray Brightness & Major Gross 200 0 % 5 0 % 3 0 % 5 4...
2024
Field Photography for Geologists
F. T. Thwaites
AAPG Bulletin
... by geologists. All other photographs are compelled to render colors by differences in shade of brightness. The natural sensitivity to light of silver...
1936
Photomicro-Stereographs as an Aid in Interpreting Textures and Structures
R. J. Hughes, Jr.
Journal of Sedimentary Research (SEPM)
... of the microscope to show the best detail. (2) The specimen is illuminated to about the same degree of brightness as is comfortable for normal...
1954
1 An Introduction to SEM Operational Principles and Geologic Applications for Shale Hydrocarbon Reservoirs
Jason Huang, Timothy Cavanaugh, Boaz Nur
AAPG Special Volumes
... been made, including development of a high-brightness electron gun allowing more electrons to be focused into a smaller beam spot, an improved electron...
2013
Use of Ground-Based LIDAR in Geomorphic and Surface Stratigraphic Studies
Seiichi Nagihara
GCAGS Transactions
... point, HDS2500 records the brightness of the reflected beam. Using this technology, researchers can scan a geologic object of their interest from...
2006
High-Resolution X-Radiography of Laminated Sediment Cores: RESEARCH METHOD PAPER
Thomas J. Algeo, Mark Phillips, Jacek Jaminski, Matthew Fenwick
Journal of Sedimentary Research (SEPM)
... in exposure and development between X-radiograph images. Note that oblique penetration of X-rays resulted in loss of resolution and increased brightness...
1994