Welcome to the new Datapages Archives
Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.
AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.
Welcome to the new Datapages Archives
Search Results > New Search > Revise Search
The AAPG/Datapages Combined Publications Database
Showing 440 Results. Searched 195,387 documents.
Textural Preservation in Siliceous Hot Spring Deposits During Early Diagenesis: Examples from Yellowstone National Park and Nevada, U.S.A.
Nancy W. Hinman, Malcolm R. Walter
Journal of Sedimentary Research (SEPM)
... with low birefringence is frequently observed. Only at high magnification is first-order gray observed. XRD and petrographic observations indicated...
2005
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
.... Prior to proceeding with the anisotropic depth imaging, the magnitude of shear splitting (or, birefringence) from the presence of azimuthal anisotropy...
Unknown
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
.... Prior to proceeding with the anisotropic depth imaging, the magnitude of shear splitting (or, birefringence) from the presence of azimuthal anisotropy...
Unknown
Abstract: SS-wave Reflections from P-wave Sources in Azimuthally Anisotropic Media; #90187 (2014)
James Gaiser and Richard Verm
Search and Discovery.com
... birefringence (splitting) in azimuthally anisotropic media is more difficult to process for 3D surveys. The purpose of this study is to re-examine...
2014
Abstracts: Oilsands: Not Your Average Seismic Data; #90173 (2015)
David Gray
Search and Discovery.com
... oilsands reservoirs in conventional data (Gray, 2007) and multi-component data (Whale et al, 2009). Since there is converted-wave birefringence...
2015
A Petrographic Analysis of the Lower Bakken Shale and Pronghorn Member of the Bakken Formation, Williston Basin; #51330 (2016)
Jingqi Xu, Dipanwita Nandy, Steve Sonnenberg
Search and Discovery.com
... collapsed foraminifera show gray birefringence of fine-crystalline quartz. The EDS image indicates the main minerals are quartz with minor illite...
2016
Green glauconitic marl bed as a sequence stratigraphical key for interpretation of contact between Qamchuqa and Bekhme formations in Bekhal area, Kurdistan region, NE Iraq
Mohammad Sadi Nourmohamadi, Rzger A. Abdula, Fawzi Albeyati, Arkan O. Sharezwri, Edres M. Perot, Shamsadin E. Jassim, Nechirvan H. Othman
Geological Society of Malaysia (GSM)
... green in color and has a greenish birefringence. It can look similar to chlorite, but chlorite is usually platier and has anomalously low...
2020
Lithology, with Particular Reference to Cementation, of Upper Carboniferous Sandstones in Northern Derbyshire, England
John Trevor Greensmith
Journal of Sedimentary Research (SEPM)
... a low birefringence (less than 0.0005), straight extinction, and exhibiting rouleau texture. The presence of kaolinite was later confirmed by Dr. G...
1957
Sumpal Field, South Sumatra – Case History of the Delineation and Production of a Fractured Basement Reservoir
Mu'adz Chalik, Bambang Pujasmadi, Muhamad Fauzi, Mahmud Bazed
Indonesian Petroleum Association
...). Kaolinite can be recognized as a groundmass of light white to gray birefringence similar to quartz and feldspar (sericite displays a yellow birefringence...
2004
Front Matter, Introduction and Glossary: A Color Guide to the Petrography of Sandstones, Siltstones, Shales and Associated Rocks
Dana S. Ulmer-Scholle, Peter A. Scholle, Juergen Schieber, Robert J. Raine
AAPG Special Volumes
... Introduction viii Foldout Michel-Lévy birefringence color chart xvii Grains Chapter 1: Quartz and silica 1 Monocrystalline 3...
2014
Drilling on Eniwetok Atoll, Marshall Islands
H. S. Ladd , Earl Ingerson , R. C. Townsend , Martin Russell , H. Kirk Stephenson
AAPG Bulletin
..., birefringence, and indices is probably an iron-rich variety close to griffithite. It End_Page 2275------------------------------ is moderately pleochroic...
1953
Diagenesis and Geochemistry of the Visingso Group (Upper Proterozoic), Southern Sweden: A Clue to the Origin of Color Differentiation
Sadoon Morad
Journal of Sedimentary Research (SEPM)
... and feldspar particles (Fig. 6B). The higher birefringence usually found at the boundaries of the booklets is due to a subsequent illitization through...
1983
Photometer Method for Studying Quartz Grain Orientation
Joseph D. Martinez
AAPG Bulletin
..." direction of the gypsum plate, an increased birefringence will result and the interference color observed will be blue-green. If the microscope stage...
1958
Diagenesis of Low-mobility Elements (Ti, Rees, Th) and Solid Bitumen Envelopes in Permian Kennedy Group Sandstone, Western Australia
Burger Rasmussen, J. E. Lover
Journal of Sedimentary Research (SEPM)
... brown to gray grains with closely spaced cleavage and low to moderate birefringence probably represent clastic biotite that has been altered during...
1994
Mineral Analysis of Sediments: Part 7. Methods of Study
F. J. Pettijohn
AAPG Special Volumes
... worthy of note. D. Refractive index determination. Determination of birefringence (Becke or Schroeder van der Kalk method) E. Color and pleochroism...
1939
Redoximorphic Paleosols in Alluvial and Lacustrine Deposits, 1.8 Ga Lochness Formation, Mount Isa, Australia: Pedogenic Processes and Implications for Paleoclimate
Steven G. Driese , Edward L. Simpson , Kenneth A. Eriksson
Journal of Sedimentary Research (SEPM)
... of Brewer 1976) (Fig. 7C), and one or more generations of hypocoatings lining channel voids (Fig. 7D). Illuviated clays show a strong birefringence...
1995
Strain Signatures of Fjord Sediment Sliding: Micro-Scale Examples from Yakutat Bay and Glacier Bay, Alaska, U.S.A.
John F. Hiemstra, Kamil Zaniewski, Ross D. Powell, Ellen A. Cowan
Journal of Sedimentary Research (SEPM)
... movements. In micromorphology, plasmic fabrics are defined as birefringence patterns caused by small domains of preferred clay alignments (Brewer...
2004
Petrology, Diagenesis and Depositional Environment of the Skinner Sandstones, Desmoinesian Northeast Oklahoma Platform
Carole Ann Lojek
Oklahoma City Geological Society
... relief, and high birefringence. Tourmaline is characterized by hexagonal crystal shape, high relief and pleochroism in various colors including brown...
1985
Morphological Analysis of Archetypal Calcite Cement
J.A.D. Dickson
Journal of Sedimentary Research (SEPM)
... in crossed polars as they have identical birefringence colors (Fig. 9B). A small fringe of granular cement crystals occur against the micrite. Fig. 9...
2019
Characterization of chert in the Dammam Formation (Eocene), Kuwait: Clues to groundwater silicification processes
Fikry Ibrahim Khalaf,, Médard Thiry, Anthony Milnes, Rehab Alnaqi
Journal of Sedimentary Research (SEPM)
... with regular extinction along fibers, or variable birefringence along a single fiber due to the rolling-up of fibers around the Nε index and appear...
2020
Clay Minerals in Atokan Deep-Water Sandstone Facies, Arkoma Basin: Origins and Influence on Diagenesis and Reservoir Quality
David W Houseknecht, Louis M. Ross Jr.
Special Publications of SEPM
... and birefringence is masked by the dark color SEM ob by point count estimate W fabric characterized and sand size servations confirm...
1992
Micromorphology and Development of Interfluve Paleosols: A Case Study from the Cenomanian Dunvegan Formation, NE British Columbia, Canada
P. J. McCarthy
CSPG Bulletin
... or slightly curved surfaces. Microstructure consists predominantly of striated birefringence fabrics (b-fabrics; see Bullock et al., 1985). Striated b...
2002
Paleosol in Galesburg Formation (Kansas City Group, Upper Pennsylvanian), Northern Midcontinent, U.S.A.: Evidence for Climate Change and Mechanisms of Marine Transgression
R.M. Joeckel
Journal of Sedimentary Research (SEPM)
... in this study. Furthermore, in thin section, Galesburg paleosol birefringence fabrics (sensu Bullock et al. 1985) are generally weak, particularly...
1999
Petrology of Pennsylvanian Rocks, Bighorn Basin, Wyoming
Thomas W. Todd
AAPG Bulletin
... as clear shre s with index slightly above that of feldspar, and very low birefringence. Kaolinitic alteration is restricted to feldspar grains from...
1964
Paleoenvironmental Controls on Upper Eocene Biosiliceous Neritic Sediments, Southern Australia
P.R. Gammon, N.P. James
Journal of Sedimentary Research (SEPM)
... altered to clinoptilolite-verdine. Within the sponge, clinoptilolite is finer-grained, especially the dermal layer (dl), with minor birefringence. h-holes...
2003