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 3,149 Results. Searched 197,286 documents.
An Hypothesis of Diastrophism
R. C. Tuttle
Tulsa Geological Society
..., toward a disc at the equator; and (2) that tending to cause the earth to assume a perfect spherical shape. Generally these two forces are in uneasy...
1945
ROCK CREEK SAPPHIRE PLACERS
Kirk Badgley, Jr.
Montana Geological Society
... as spherical to nodular, clear pebbles with pitted surfaces; but some are found as hexagonal prisms terminated by rhombs or pyramids; and others...
1965
The Igneous Geology of Chiricahua National Monument, Arizona
Harold E. Enlows
Tulsa Geological Society
... of spherical balls or pellets of ash averaging about one half inch in diameter and showing an amazing uniformity both as to size and shape. These are tightly...
1951
ABSTRACT: Electron Microscopy of Organic Materials and Their Role in Shale Diagenesis
Siva Sivalingam
The Society for Organic Petrology (TSOP)
... contains abundant spherical and globular materials similar to pollens a'nd spores (Figure 3 and 4). The variation in chemical composition is largely due...
1993
Synthesis of Gem Minerals
Harold E. Enlows
Tulsa Geological Society
... such as calcite or pyrite growing in fractures in the gem mineral. Gems Synthesized by the Verneuil or Fusion Method. Gas bubbles, usually spherical...
1953
Application of the ISF/Sonic Combination Tool to Gulf Coast Formations
N. A. Schuster , J. D. Baden , E. R. Robbins
GCAGS Transactions
... Symposium, Paper P. Currently, the major basic logging service in the Gulf Coast area is the I-ES survey, which includes a deep Induction Log, the 16-inch...
1971
From Arrhenius to CO2 Storage: Part XII: Model for Radiative Transfer of Fluxes in the Temperature-Stratified Atmosphere
Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
... a spherical cow in a vacuum …” A popular joke about modeling. NASA/ JSC the equation of radiative transfer which describes mathematically how...
2021
Paleoecological Reconstruction of Depositional Environments—Some Techniques of Possible Exploration Interest: Abstract
Francis G. Stehli
Tulsa Geological Society
... and of the rotational poles. Smoothing of global diversity data by application of a best-fitting, second-order, spherical harmonic surface allows precise location...
1968
Exploiting non-uniqueness: Improving inversion results by post-processing
James Brewster
International Meeting for Applied Geoscience and Energy (IMAGE)
... spherical symmetry, the resulting gravity field is unchanged. Source mass can be upward continued by convolving with the same kernel function used to upward...
2023
Adjustment of Gradient of Torsion Balance and Application of Undulation Method to Gravity Measurements: DISCUSSION
J. G. Koenigsberger
AAPG Bulletin
... the different forms. In nature scarcely a body in the earth would have a wholly regular contour surface--plane, spherical, or ellipsoidal. The surface...
1930
Collophane from Miocene Brown Shales of California
E. Wayne Galliher
AAPG Bulletin
... somewhat. "Sporbo" occurring in the Belridge field at a depth of 4,535 feet (Belridge Oil Company's No. 15) have both ovoid and almost spherical shapes...
1931
The Dustfall of November 13, 1933, at Buffalo, New York
A. E. Alexander
Journal of Sedimentary Research (SEPM)
... of forms and shapes. Some are spherical, others ovoid, still others distinctly elongated. Some of the vari-shaped spores are smooth, some are pitted...
1934
Tektite Found in Sarawak
S. K. Lam
Geological Society of Malaysia (GSM)
... a horse-shaped hill (Lam. 1982) (Fig. 2). The tektite found is nearly spherical in shape. with a diameter of about 25 mm. The specimen has a brilliant...
1983
The Classification and Nomenclature for Porous Clastic Rocks
Sriyanee De Silva
Geological Society of Malaysia (GSM)
... limits of maximum and minimum porosity in an equigranular, uniformly spherical rock with no cement or matrix. Variation in grain size and morphology...
1986
ABSTRACT: Detection and Evaluation of Source Rocks and Oil Reservoirs by Fluorescence Microscopy
B.Alpern, M.J.Lemos de Sousa, H.Pinheiro, X.Zhu
The Society for Organic Petrology (TSOP)
... been established: 1. Uquid Hydrocarbons: Drops. Films, Exsudates. Dissolved oil (in resin), Non-spherical He (intercrystal fillings). 2. Solid...
1992
Bubble Characteristics in Gassy Sediments
Thomas H. Orsi, Aubrey L. Anderson
GCAGS Transactions
... and shape are related as bubble shape progresses from spherical to elliptical to amorphous "blobs" in form with increasing size. These results suggest...
1994
Optimizing the Enhanced Oil Recovery Method using Nanotechnology to Maximize Oil Production in Old Wells
Ariska Nur, Aldian
Indonesian Petroleum Association
... namely silica-containing and non-silica nanoparticles. Some types of silica-containing NP include spherical fumed silica, hydrophobic silicon oxide...
2021
Aragonitic "Algal Lapilli" from Lagoonal Environment (Lobos, Canary Islands): NOTES
Peter Rothe
Journal of Sedimentary Research (SEPM)
... surface. The interior of the spherical bodies is carbonate, preserved dried algal fibrous material still binding the carbonate and some empty space. Each...
1970
Axial Ratios of Plane Sections through Tri-axial Ellipsoids: NOTES
N. H. Gray
Journal of Sedimentary Research (SEPM)
... will be End_Page 1140----------------------- [EQUATION (6)] where is the mean tangent distance [EQUATION (7)] In other words the smaller and the more spherical...
1971
Plastic Spray Thin Section Cover
Mounir T. Moussa
Journal of Sedimentary Research (SEPM)
... and thus is included in the optical correction of the objective for spherical aberration. For those objectives the rated thickness of the cover glass...
1976
Age of Bliss Sandstone, New Mexico: GEOLOGICAL NOTES
Rousseau H. Flower
AAPG Bulletin
... fauna. This consists of linguloid brachiopods, as yet undetermined, dendroid graptolites of the genus Dictyonema, small spherical algae tentatively...
1953
New Ideas on Oil-Gas Potential of Sevaberd Anticline, Armenia*
Yu. R. Kagramanov
Petroleum Geology: A Digest of Russian Literature
... of formation water with spherical clots of heavy oil. Well 1-op appears to have penetrated the oil-water contact zone. This same target was encountered 100 m...
1999
Settling Velocities of Natural Sand Grains in Air
Bingquan Cui, Paul D. Komar, Jumpei Baba
Journal of Sedimentary Research (SEPM)
... velocities versus settling rates of equivalent spherical grains (that is, spheres having the same weights and volumes as the natural irregular grains...
1983
Intratest Porosity in Foraminifera
Richard T. Bachman
Journal of Sedimentary Research (SEPM)
... is the internal porosity of the foram assemblage. The adjective spheroidal is used because the only spherical species present was Orbulina universa. The other...
1984
Pebble Shape (and Size!): REPLY
Werner K. Illenberger
Journal of Sedimentary Research (SEPM)
.... Incidentally, it is not necessary to have an index displayed on a shape diagram to be able to use the index for specific purpo es: it is simpler...
1992