A Petrographic Study of the Edwards Limestone Core: From the Lone Star No. 1–A Tom Well, Atascosa County, Texas

Louis Walter Cable

South Texas Geological Society Special Publications

... that the sparry groundmass type. The diagram also shows that most of the limestone composed of framework constituents in excess of 50% has a sparry groundmass...

The IntraCONtinental BasinS (ICONS) Atlas - Applications in Eastern Australia

C. Heine, R. D. Müller

Petroleum Exploration Society of Australia (PESA)

..., and continue subsiding long after initial thermal disturbances have decayed. Conventional basin models fail to explain the unexpected excess accumulation...

An Appraisal of the Pablo Formation of Presumed Late Paleozoic Age, Central Nevada

Robert C. Speed

Pacific Section SEPM

... is sandsized and moderately spherical but embayed and often broken; such clasts contain monocrystalline quartz. The second type occurs both in sand...

Provenance of Late Miocene Sedimentary Rocks, Viti Levu Island Fiji: Navosa, Nadi, and Ra Sedimentary Groups

D.A. Kramer

Circum Pacific Council Publications

.... Fossils are rare, but include foraminifera and an unidentified spherical species (Figure 15; sample 89-VL22). Figure 15. Photomicrograph of bioclasts...

Buried and Resurrected Hills of Central Ozarks

C. L. Dake , Josiah Bridge

AAPG Bulletin

..., from the distortion of spherical algae in the Cason shale, that that formation FOOTNOTE 1. Eliot Blackwelder, "The Origin of the Central Kansas Oil...

A New Workflow for Improved Water Saturation Assessment in Organic-Rich Mudrocks Honoring Rock Fabric

Artur Posenato Garcia, Archana Jagadisan, Ameneh Rostami, Zoya Heidari

Unconventional Resources Technology Conference (URTEC)

...) models that used volumetric concentration of clay network to account for excess conductivity due to the presence of clays in clay-rich formations...

Enigmatic Deep-Water Depositional Mechanisms, Upper Part of the Oquirrh Group, Utah

Teresa E. Jordan

Journal of Sedimentary Research (SEPM)

..., locally nearly spherical, cobbles are composed of sandstone, compositionally similar to the matrix in which they rest with packstone texture. Clean...

Geologic Architecture of Circum-Pacific

Lewis G. Weeks

AAPG Bulletin

... have never been recorded. The arc is the normal strain effect on the earth's spherical surface where a part of the crust is raised over a fracture...

Groundwater Silicification in Paris Basin Limestones: Fabrics, Mechanisms, and Modeling

Medard Thiry, Isabelle Ribet

Journal of Sedimentary Research (SEPM)

... is assumed to be a porous medium composed at each point of n1 spherical quartz crystals with a radius r1, and of n2 spherical calcite crystals...

Rock classification in the Eagle Ford Formation through integration of petrophysical, geological, geochemical, and geomechanical characterization

Shahin Amin, Matthew Wehner, Zoya Heidari and Michael M. Tice

AAPG Bulletin

... maps from the lower Eagle Ford core samples. Based on the analysis of x-ray images, quartz and pyrite appear to be more spherical shaped. An aspect...

Origin of the Salina Salt of Michigan

Louis F. Dellwig

Journal of Sedimentary Research (SEPM)

.... and SOLINGER, J. P., 1934, The effect of land drainage upon the excess bases of sea water: Biol. Bull., v. 66, pp. 97-101. NEWCOMBE, R. B., 1932, Oil...

Section Three: Structures Resulting from Flow and Diapirism of Clay

New Orleans Geological Society

... are abnormally pressured and contain excess pore water; temperature, gas content and pressure also have effects. Clay viscosity increases...

Interpreting Paleoenergy Levels from Sediment Deposited on Ancient Wave-Dominated Shelves

H. Edward Clifton

CSPG Special Publications

... velocity for movement and sheet flow of spherical quartz sand In water under oscillatory currents and associated proposed energy level designations...

Mineral Reactions and Controls on Zeolite-facies Alteration in Sandstone of the Central Transantarctic Mountains, Antarctica

Charles L. Vavra

Journal of Sedimentary Research (SEPM)

... that, although temperatures were in excess of 200°C immediately adjacent to intrusions, away from these local effects, temperatures in the Fremouw and Falla...

Polar Wandering and Continental Drift an Evalvation of Recent Evidence

Ernst R. Deutsch

Special Publications of SEPM

... latitude geoidal shape spin axis new with for veloc a an excess The motion ceases only when the two axes and the axis of geoidal shape...

Relating Small-Scale Permeability Heterogeneity to Lithofacies Distribution

Michael N. Gaud, Gary A. Smith, Sean A. Mckenna

Special Publications of SEPM

... 0.23 0.30 linear spherical spherical 1.00 1.18 1.00 5.75 3.20 7.00 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. SGt 0° 90° vertical 20 55 60...

Scales of lateral petrophysical heterogeneity in dolomite lithofacies as determined from outcrop analogs: Implications for 3-D reservoir modeling

Matthew J. Pranter, Colette B. Hirstius, David A. Budd

AAPG Bulletin

... variogram represents a model variogram. The porosity model variogram consists of a combination of a spherical model that represents the short-scale...

Petrology of Carbonate Rocks

D. L. Baars

Four Corners Geological Society

... sediments on the Florida and Bahama platforms (R. N. Ginsburg, personal communication). Pellets comprise the large group of spherical grains...

Late Cretaceous to Present-Day Opening of the Southwest Pacific Constrained by Numerical Models and Seismic Tomography

Kara J. Matthews, Maria Seton, Nicolas Flament, R. Dietmar Müller

Petroleum Exploration Society of Australia (PESA)

... plate motions. We use the 3D spherical mantle-convection code CitcomS coupled to the plate reconstruction software GPlates, with plate motions since 200...

Biogenicity of Silica Precipitation Around Geysers and Hot-Spring Vents, North Island, New Zealand

Brian Jones , Robin W. Renaut , Michael R. Rosen

Journal of Sedimentary Research (SEPM)

... Ohaaki Pool has been used to store excess water discharged from the geothermal plant. Thus, apart from small artificial outfl w channels, water no longer...

Depositional Facies and Diagenetic Alteration in a Relict Siliceous Hot-Spring Accumulation: Examples from Yellowstone National Park, U.S.A.

Sean A. Guidry, Henry S. Chafetz

Journal of Sedimentary Research (SEPM)

...-silica and low-chloride superheated aquifer that is approximately 170° C, and (2) a deeper aquifer that is in excess of 200° C, rich in sodium, silica...

Earliest Triassic Claystone Breccias and Soil-Erosion Crisis

G.J. Retallack

Journal of Sedimentary Research (SEPM)

... granule-size or larger clasts that are angular, far from spherical, and have no internal bedding, unlike flat-pebble conglomerates which contain rounded...

Holocene Shallow-Water Carbonate and Evaporite Sediments of Khor al Bazam, Abu Dhabi, Southwest Persian Gulf

Christopher G. St. C. Kendall , Sir Patrick A. D'e. Skipwith

AAPG Bulletin

... format. Fig. 4. [Grey Scale] A. Peneroplid Foraminifera being altered by blue-green algae. B. Partially abraded ellipsoidal pellets. C. Spherical...

Cyanobacteria from the Big A Butte Member of the Supai Formation (Lower Permian) in the Holbook Basin of Arizona: Indications of a Fresh to Brackish Water Depositional Environment; #51647 (2020)

Karl W. Schwab, Michael A. Smith, Carmon D. Bonanno

Search and Discovery.com

... and/or the presence of an Optivar). If the analyst is lucky enough to have the use of a Scanning Electron Microscope (SEM), magnifications in excess of 20,000...

Bifungites of Halli from the Ordovician (Caradocian) Trenton Limestone of the Quebec City Area

R. K. Pickerill, W. B. Forbes

Atlantic Geology

... dimensions of the parameters b (length of spherical dumb-bells), d width of basal chamber), 1 (total length of the trace), s (length of the basal chamber...