Paleozoic Geology of Llano Region

W. C. Bell, Virgil E. Barnes, Preston E. Cloud

South Texas Geological Society Special Publications

... unfossiliferous except for small spherical stromatolites. The Point Peak member represents a temporary influx of silt, probably mainly from the northwest or west...

APPLICATION OF A THREE DIMENSIONAL SEISMIC SURVEY TO FIELD DEVELOPMENT IN THE WILLISTON BASIN

GARY C. ROBINSON, FERNAND BAIXAS, PATRICK J. HOOYMAN

Williston Basin Symposium

... demultiplexing, trace editing, gain compensation for transmis­sion loss and spherical divergence, datum statics, grid collec­tion, spiking...

Productive Core Analysis Characteristics of Carbonate Rocks in the Four Corners Area

Murray R. McComas

Four Corners Geological Society

... to have the best ultimate primary and secondary recovery in the Paradox basin. Oomoldic Porosity Oolitic limestones consist of minute spherical grains...

The Dakota Formation in Southwestern Kansas

Norman Plummer

Kansas Geological Society

... or more feet deep, siderite pellets and nodules and boulders of sideritic clay are not uncommon. At several levels in the Dakota formation spherical...

Occurrence and Origin of Chert

W. A. Tarr

Tulsa Geological Society

... forms. If small it may retain a spherical shape during consolidation, but larger forms usually become elliptical or lenticular and are further...

Imaging in Complex Environments … Common Reflection Angle Migration

Graham A. Winbow

Indonesian Petroleum Association

... from the form of a typical velocity model. Thus more computationally intensive approaches such as Wave Equation Migration are not necessarily required...

Attenuation of Marine Coherent Noise – A Processing Case History in the East China Sea

Huaien Wang, Liu Guangxin, Curtis E. Hinz, Fred F. C. Snyder

Southeast Asia Petroleum Exploration Society (SEAPEX)

... noise train dips are evident. Shots from widely separated positions along the lines, after exponentiation and spherical divergence correction show...

The Problem of Orogenesis in the Light of New Field and Experimental Evidence*

Walter H. Bucher

CSPG Bulletin

... by the author that shrinkage in a relatively thin spherical shell, enclosed between an outer plexiglass cover---representing the earth's outer 100 kilometers...

The Effect of Pressure and Water Content on Chemical Diffusion of Oxygen in an An30(Di98Hd2)70 Silicate Melt

Shelly J. Fain

Bulletin of South Texas Geological Society

... closely resembled a sphere. For diffusion with spherical geometry the following equation from Crank (1975) was used: c - c 1 c 0 - c 1 = 1...

ABSTRACT: Bio-precursors of unique alkaline lacustrine source rocks: the Lower Permian Fengcheng Formation in the Junggar Basin (NW China)

Liuwen Xia, Jian Cao, Tingting Wang, Lizeng Bian

The Society for Organic Petrology (TSOP)

... and sporadic pediastrum (Fig. 2a; Fig. 2b). (2) The bacteria are spherical under SEM with a diameter of about 1 μm (Fig. 2f). (3) The benthic algae (Fig. 3e...

Subdivision of the Cretaceous Sediments of Northeastern Azerbaydzhan According to Microfauna

Ch. A. Tairov

Petroleum Geology: A Digest of Russian Literature

... are found in large numbers only in the Tournaisian stage; they have spherical, discoid, turret, and cross forms. In the subdivision of the Upper...

ABSTRACT: Variations in the Occurrence of Pyrite and Total Sulfur in Peats at the Confluence of Carbonate and Peat-forming Environments

Katherine E. McKay and Arthur D. Cohen

The Society for Organic Petrology (TSOP)

... of microorganisms (i.e. algae, fun@, and bacteria). Additionally, a relationship seems to exist in some cases krween the occurrence and locations of spherical...

Polka-DotŽ Granite Clasts in the Ridge Route Formation, Ridge Basin, Southern California

Keith W. Ehlert

Pacific Section SEPM

... to biotite, talc, and iron oxide, producing a red to black spherical mass around which is a shell of white granite containing little or no mafic minerals...

Stratigraphic Utility of Sphaeroidinella Cushman in Louisiana

W. P. Leutze

GCAGS Transactions

....). The next chamber to be added (3rd) is almost spherical and is approximately the same size as the two previous chambers combined (Text-fig. 1b). The fourth...

Mountain Front Deformation and Hydrocarbon Accumulation

James D. Lowell, James H. Clement

Oklahoma City Geological Society

.... Geophys. Research, v. 73, pp. 5855-5899. Katili, J. A., 1970, Large transcurrent faults in Southeast Asia with spherical reference to Indonesia...

EPMA Characterisation and Geochemistry of Gold Deposits of Peninsular Malaysia „ Genetic Implications

G. H. Teh, Helmi Mohd. Latib, Zulpakar Mohamad@Jusuh, Anisalimahwati bt. Sulaiman

Geological Society of Malaysia (GSM)

... mm wide. On the whole grains which are longer than 1 mm tend to be prismoidal in shape while those less than 1 mm are generally spherical...

Porosity Evaluation of Shales Using NMR Secular Relaxation

Hugh Daigle, Andrew Johnson, J. P. Gips, Mukul Sharma

Unconventional Resources Technology Conference (URTEC)

... to this process in a spherical pore of radius R are given by (Abragam, 1961; McDonald et al., 2005) 1 2 2 2 2    S S  S  1  J 0   S   3J1...

Skeletal Grains: Foraminifera

AAPG Special Volumes

... have spherical chambers, radially porous wall structures and commonly very thick walls. They are an extremely important component of the planktonic...

ABSTRACT: The Use of Peatlands in Monitoring Contaminant Heavy Metals in the Environs of Point Sources-Methods, Advantages, and Future Approaches

M. I. Hawke, R. M. Bustin, F. Goodarzi

The Society for Organic Petrology (TSOP)

... reflecting circular or spherical fly ash particles were found within the upper portions of the peat profiles closest to the smelter, while these particles...

Recovery of Various Fractions of Crude Oil in Porous Media at the Pore Scale: An Application of Synchrotron X-Ray Microtomograph

Jaydeep Ghosh, Geoffrey R. Tick

Oklahoma City Geological Society

...) 2PV surfactant flush. Number of blobs increased, but reduced in size after surfactant flooding. Relatively larger blobs tend to be more non- spherical...

Dinoflagellates and their Use in Petroleum Geology

William R. Evitt

Special Publications of SEPM

... by an increasing number of workers Among these are some of the little spiny spherical objects that have commonly becn called hystricho They do not sphercs pI...

Sedimentology and Mineralogical Differentiation of Sandstones in the Fort Union Formation (Paleocene), Wind River Basin, Wyoming

James L. Courdin, John F. Hubert

Wyoming Geological Association

... the Precambrian cores of the ranges. The sedimentary detritus was largely quartz, chert, sandstone-siltstone fragments, and round, spherical grains...

Pennsylvanian Rocks of the Tulsa Area: Fort Scott Limestone

A. P. Bennison

Tulsa Geological Society

... Formation from about 3 to 1 feet, and the Little Osage Shale Member from about 5 to 3 feet. Small, irregularly shaped, tubular to spherical nodules...

Primary Migration - A New Tack on an Old Theme

Jack I. Simmons

GCAGS Transactions

... these pores must be of that size or smaller, and will contain relatively few hydrocarbon molecules, perhaps a thousand or so. As an example, a spherical...

Fungal Spores From Vermejo Formation Coal Beds (Upper Cretaceous) of Central Colorado

Robert T. Clarke

Rocky Mountain Association of Geologists

... bed Magnet o r Ocean Wave coal bed (OPC 830 and OPC 918) Nonac coal bed Rockvale o r B r e w s t e r coal bed (OPC 919) Trinidad Sands tone Table I...