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The AAPG/Datapages Combined Publications Database
Showing 6,048 Results. Searched 200,619 documents.
Notes on Monterey Rocks Near Santa Maria, California
Kenneth A. Pisciotto
Pacific Section of AAPG
... the position of the x-ray diffraction (XRD) peak near 22°2θ, has been used as an index to the diagenetic grade (e.g. Murata and Larson, 1975...
1981
Geologic Controls on Oil Production from the Niobrara Formation, Silo Field, Laramie County, Wyoming
Carrie Welker, Lisa Stright, Tom Anderson
Unconventional Resources Technology Conference (URTEC)
...” correction was applied to NPHI and DPHI curves (Eqs. 3-4). Finally, combined neutron-density porosity was calculated (Equation 5). These equations...
2013
Organic-rich black shale geochemistry and their association with lead-zinc ores: Mid-continent United States
Noah S. Morris, Adriana Potra, John R. Samuelsen
International Meeting for Applied Geoscience and Energy (IMAGE)
...-ray diffraction (XRD), radiogenic Pb isotopes, and redox-sensitive trace element analyses. The results indicate that these shales formed in a range...
2022
Diagenesis of the Lower Tuscaloosa as Seen in the Dupont De Nemours #1 Lester Earnest, Harrison County, Mississippi.
James H. Hearne ,, Brian E. Lock
GCAGS Transactions
... of Minus Cement Porosity (MCP) curves for determination of depth of cementation as used by some authors is therefore thrown into doubt, unless replacement...
1985
The Effect of Strontium on the Aragonite-Calcite Ratios of Pleistocene Corals
Frederic R. Siegel
Journal of Sedimentary Research (SEPM)
... and diluting to two liters. From these stock solutions, suitable aliquots were taken and diluted for comparison standards from which calibration curves TABLE...
1960
Seismic Frequency Bandwidth Constraints in Deepwater Locations
Andrew Long, Iain Buchan
Indonesian Petroleum Association
... 3D data (reprocessed in 2001). Figure 8. Modelled frequency content vs. TWT for two 3D surveys with different bin dimensions. The red and blue curves...
2004
Revolutionizing Tight Oil Reservoir Exploration: Integrating 3D Sonic Imaging, Borehole Image, NMR, and Gamma-Ray Spectroscopy Measurements for Precise Pay Zone Discovery
Ziyue Cui, Ge Wu, DaiGuo Yu, Gang Wang, Jinlong Wu, Changwei Qu, Dongdong Cheng, HuaYang Li, Yanyan Chen
Unconventional Resources Technology Conference (URTEC)
.... The lithology of Chang8 and Chang9 formation are mainly composed by feldspathic litharenite and lithic feldspar sandstone. X-ray diffraction (XRD) analysis...
2025
A Critique of the "McLaren Method" for Defining Sediment Transport Paths: DISCUSSION
Shu Gao, Michael Collins
Journal of Sedimentary Research (SEPM)
.... Petrology, v. 19, p. 51-70. MCCAVE, I. N., BRYANT, J. R., COOK, H. F., AND COUGHANOWR, C. A., 1986, Evaluation of a laser-diffraction-size analyzer for use...
1991
Magnesium and Strontium in Mud Fraction of Recent Carbonate Sediment, Alacran Reef, Mexico
Charles M. Hoskin
AAPG Bulletin
... from dilutions prepared from these solutions (1:100 for magnesium and 1:50 for strontium). Working curves were prepared for each day's work. Magnesium...
1968
Variation of organic matter density with thermal maturity
Mark D. Rudnicki
AAPG Bulletin
...., C. J. Lu, Z. P. Xia, Y. Zhou, and Z. Luo, 2007, X-ray diffraction patterns of graphite and turbostratic carbon: Carbon, v. 45, p. 1686–1695, doi...
2016
Soft Inorganic Geochemistry: A New Concept for Unconventional Resources Modeling; #80311 (2013)
Claudio Larriestra
Search and Discovery.com
... element. A small percentage of the population (3% to 5% of the samples) is processed with destructive methods for mineralogy (X Ray Diffraction...
2013
Placement Matters: Improving Survey Accuracy by Using Continuous Directional Data and Drilling Parameter Settings; #41856 (2016)
Ed Stockhausen, Richard Ball, Pete Clark, Richard Mongan, Philip Rice
Search and Discovery.com
... there is a separation between the curves connecting the points together. The larger the separation between the curves, the greater the error over...
2016
Provenance and Diagenesis of the Cherokee Sandstones, Deep Anadarko Basin, Western Oklahoma
Stephen Douglas Levine
Oklahoma City Geological Society
...) other minerals. X-ray Diffraction The clay mineralogy of 13 sandstone and 13 shale samples from the seven cores were analyzed by X-ray diffraction...
1985
Sedimentology and stratigraphy of a deep-water gas hydrate reservoir in the northern Gulf of Mexico
P. Kevin Meazell, Peter B. Flemings, Manasij Santra, and Joel E. Johnson
AAPG Bulletin
... laser diffraction and sedimentation methods: Biosystems Engineering, v. 106, no. 2, p. 205–215, doi:10.1016/j.biosystemseng.2010.03.013. Enunwa, C...
2020
A Comparison of Air Photograph and Computer Simulated Wave Refraction Patterns in the Nearshore Area, Richibucto, Canada and Jervis Bay, Australia
Edward A. Bryant
Atlantic Geology
... also assume that wave refraction obeys Snell's law, that diffraction and reflection are minimal, that wave period is a constant both in time and space...
1974
The Eagle Ford (Boquillas Formation) of Val Verde County, Texas - A Window on the South Texas Play
Brian E. Lock, Lauren Peschier, Nick Whitcomb
GCAGS Transactions
... the SEM (scanning electron microscopy) or XRD (x-ray diffraction) results were available. Back-Scatter Scanning Electron Microscopy High resolution...
2010
The Characterization of Fracture Mechanisms Using a Combination of Surface Microseismic Imaging, Microdeformation Modelling, and Downhole Microseismic Mapping: an Examination of the Value of Moment Tensor Migration Imaging
Raquel Velasco, Kit Chambers, Stephen A. Wilson
Unconventional Resources Technology Conference (URTEC)
...; McMechan 1982). This method iterates through positions within the target volume and stacks (or sums) the data along moveout curves consistent...
2014
Bob West and Lopeno Fields: Structure and Stratigraphy of Two Significant Upper Wilcox Fields in South Texas
Richard W. Debus
GCAGS Transactions
... in the annual production curves of the two fields (Figs. 3 and 4 ). Lopeno Field was the first Upper Wilcox field in Railroad Commission District 4...
1996
Notes on the Mineralogy and Origin of Glauconite
Y. K. Bentor, Miriam Kastner
Journal of Sedimentary Research (SEPM)
... parameters and in the interpretation of X-ray diffraction patterns. The magnetic separator is not sufficiently powerful to eliminate partially oxidized...
1965
Mineralogy and Origin of Southern New England Shelf Sediments
Robert L. Mcmaster, Louis E. Garrison
Journal of Sedimentary Research (SEPM)
... by 50 miles; lies roughly between the 100 fm and 30 fm depth curves which comprises the middle and outer parts of this shelf; and is bounded by Hudson...
1966
Cincinnati Arch: Mineralogical-Statistical Evidence of Post-Ordovician Origin
David M. Scotford
AAPG Bulletin
... diffraction techniques. In addition, most samples were analyzed chemically by X-ray fluorescence and many were examined by differential thermal analysis...
1964
Occurrence and Significance of Magnesite in Upper Permian (Guadalupian) Tansill and Yates Formations, Delaware Basin, New Mexico (1)
R. A. GARBER, P. M. HARRIS, and J. M. BORER
AAPG Bulletin
...------------------------------ Methods Magnesite was discovered in the PDB-04 core during routine x-ray diffraction analysis. Magnesite can easily escape detection because its...
1990
Identification and distribution of hydraulic flow units of heterogeneous reservoir in Obaiyed gas field, Western Desert, Egypt: A case study
Mohamed A. Kassab, Ahmed Elgibaly, Ali Abbas, and Ibrahim Mabrouk
AAPG Bulletin
... hydraulic flow units depends on integrating well logs, routine core data, and minerals analysis by using x-ray diffraction analysis and scanning electron...
2021
Simple and Efficient Separation of Magnetic Minerals From Speleothems and Other Carbonates
Jennifer H. Strehlau, Lindsay A. Hegner, Becky E. Strauss, Joshua M. Feinberg, R. Lee Penn
Journal of Sedimentary Research (SEPM)
... dissolution and magnetic separation and to perform subsequent microscopy and compositional analysis, X-ray diffraction, and magnetic characterization...
2014
Brachiopods in Epeiric Seas as Monitors of Secular Changes in Ocean Chemistry: A Miocene Example from the Murray Basin, South Australia
Peir K. Pufahl, Noel P. James, T. Kurtis Kyser, Jeff J. Lukasik, Yvonne Bone
Journal of Sedimentary Research (SEPM)
..., G.E., Holser, W.T., Kaplan, I.R., and Sakai, H., 1980, The age curves for sulfur and oxygen isotopes in marine sulfate and their mutual interpretation...
2006