Pleistocene

New Orleans Geological Society

... a "curvilinear Pleistocene bar" in south Alabama (Carlston, 1950). While the absence of estuarine or marine fossils in the near-surface horizons of highly...

Ground-Water Flow and the Geothermal Regime of the Floridian Plateau (1)

F. A. Kohout

GCAGS Transactions

... and by direct infiltration of rainfall where the aquifer crops out or lies near the surface in the karst region of north-central Florida (shaded area...

Forensic Geochemistry in Characterization of Petroleum Contaminants in Soil and Water

I.R. Kaplan

Pacific Section of AAPG

... usually near the surface of the soil, and causes degradation, Increase in viscosity, increase in specific gravity, and conversion of some liquid...

Beach Rock: Geological Observations

Richard J. Russell

New Orleans Geological Society

.... If the water is too cold the cement will dissolve, rather than precipitate near the surface of the ground water. The critical temperature appears...

Channel Sequences and Braided Stream Development in the South Canadian River, Hutchinson, Roberts, and Hemphill Counties, Texas

L. G. Kessler, II, Fred G. Cooper

GCAGS Transactions

..., and an increase in velocity near the surface of the bed. Records of these major erosional and depositional events are preserved in the eight major channel...

Compaction of Fine-Grained Terrigenous and Carbonate Sediments -- A Review

Philip R. Brown

CSPG Bulletin

... of restricted geological application but are useful for comparison with measurements made on natural near surface samples. All experimental methods...

Investigation of Possible Shallow Gas Accumulations Associated with Pockmarks on the Otago Slope Southeast of New Zealand

Jasper Hoffmann, Andrew Gorman, Gareth Crutchley

Petroleum Exploration Society of Australia (PESA)

... connected to the pockmarks in near-surface seismic data revealed two shallow bright spots below pockmark patches on crests between gullies northeast...

The Petrology of the Marshall Formation of Michigan

Margaret D. Stearns

Journal of Sedimentary Research (SEPM)

... in its use as a key horizon to which test wells are drilled to obtain information relating to structure. It is the most widespread of the near-surface...

Beaches

James H. C. Martens

Special Publications of SEPM

... composed mostly of heavy minerals are common on many beaches. These are usually on or near the surface of the backshore, close to the foot of the dunes...

Weatherability of Zircon

Dorothy Carroll

Journal of Sedimentary Research (SEPM)

... thin layer of mineral, i.e., when the cavities are very near the surface. This is illustrated in figure 1. (ii) Penetration of solutions along zoning...

Diagenesis of the Upper Jurassic Norphlet Formation, Mobile and Baldwin Counties and Offshore Alabama

R.L. Vaughan, Jr. , D. Joe Benson

GCAGS Transactions

... depositional conditions and a subsequent marine transgression left an early diagenetic imprint on the sandstone. Near-surface cementation by hematite...

The Norphlet Reservoir in Mobile Bay; Origins of Deep Porosity

Brian E. Lock , Samuel W. Broussard

GCAGS Transactions

... contemporaneous with sedimentation and derived from near-surface, continental or marine groundwaters of the type feeding many modern sabkhas (Butler, 1969; Lock...

Occurrence of Uranium in the Upper Smackover Limestones of the North Louisiana Salt Basin

Miles E. Denham, Thomas T. Tieh

GCAGS Transactions

.... Much of what is known is an extrapolation of observations made in the laboratory or in the study of near surface uranium ore deposits. This discussion...

Mineral Alteration In Rocks Of Middle Eocene Age, Absaroka Range, Wyoming

Richard L. Hay

Journal of Sedimentary Research (SEPM)

... present in the Pitchfork sedimentary environment (Hay 1956, p. 1882), and the water table may have been at and near the surface, preventing lateritic...

Surface Vitrinite Reflectance Study of the Wind River Basin, Central Wyoming

Vito F. Nuccio, Thomas M. Finn, Mark J. Pawlewicz

Wyoming Geological Association

..., and the oxidizing effects of groundwater and meteoric water on organic matter in surface and near-surface samples, but these effects should be detectable...

Holocene Development of the Southeastern Texas Coast, Sabine Lake Area, from Foraminiferal Biofacies

Laura B. Stewart , Robert A. Morton , Martin B. Lagoe

GCAGS Transactions

.... The near surface shelly sand in cores 4 and 6 represents modern beach and washover deposits that contain fewer foraminifera and shell fragments than...

Petroleum Geochemistry of the Atlantic Margin

John M. Hunt

AAPG Special Volumes

... molecules, are common in continental margin sediments (Kvenvolden, 1981). They have been intriguing economically because near the surface they can...

Holocene and Late Pleistocene Sediment Sources, Continental Shelf off Brunswick, Georgia

Robert E. Carver

Journal of Sedimentary Research (SEPM)

... the sample transect suggests that two sources of sediment or two sedimentary processes produced the present distribution of near-surface sediment...

The Effects of Size-Selective Feeding by Oligochaetes on the Physical Properties of River Sediments

Michael J. S. Tevesz, Frederick M. Soster, Peter L. McCall

Journal of Sedimentary Research (SEPM)

... studies of near surface sediments in Maine lakes, in Cushing, E. J., and Wright, H. E., eds., Quarternary Paleoecology: New Haven, Conn., Yale Univ...

Mississippian Bioherms in Northeast Oklahoma

John W. Harbaugh

AAPG Bulletin

...) the bioherms were strengthend and partly formed by organisms capable of building and raising a resistant structure into near-surface, turbulent waters...

Argillation and Direct Bauxitization in Terms of Concentrations of Hydrogen and Metal Cations at Surface of Hydrolyzing Aluminum Silicates

W. D. Keller

AAPG Bulletin

... which is taken into solution near the surface of the ground moves downward, it may inhibit the bauxitization of rocks undergoing alteration in the path...

Water-Escape Structures in Coarse-Grained, Volcaniclastic, Fluvial Deposits of the Ellensburg Formation, South-Central Washington

Samuel Y. Johnson

Journal of Sedimentary Research (SEPM)

... of compaction-induced, near-surface dewatering. If sediment layers did etain their interstitial water for relatively long time intervals or to greater...

Beaches: Part 3. Deposits Associated with Strand Line

James H. C. Martens

AAPG Special Volumes

... are common on many beaches. These are usually on or near the surface of the backshore, close to the foot of the dunes or wave-cut cliff, but may...

Cherts with Moganite in Continental Mg-Clay Deposits: An Example of False Magadi-Type Cherts, Madrid Basin, Spain

M.A. Bustillo

Journal of Sedimentary Research (SEPM)

... deposits and development of extensive stratiform cherts near the upper surface of the groundwater. Are the Mg-Rich Cherts Magadi-Type Cherts? Identification...

Subdivisions and Depositional Environments Of New Albany Shale (Devonian-Mississippian) in Indiana

Jerry A. Lineback

AAPG Bulletin

... in an oxygenated zone near the surface. The high organic content of the New Albany Shale has led some workers to cite it as a potential source rock...