Near Surface Characterization of the Baton Rouge and Scotlandville Faults, East Baton Rouge Parish, Louisiana

Angela M. Thomas, Jeffrey A. Nunn

GCAGS Transactions

... for the trapezoid are 0, 50, 300 and 350 MHz. This process filters out both low frequency, and high frequency noise. The band pass filter both enhances deeper...

Barrier Islands, Lagoons, and Marshes

Bruce P. Hayden, Robert Dolan

Journal of Sedimentary Research (SEPM)

... a high frequency (40 km) along-the-coast variation in weightings. The relationship between variations in along-the-coast weightings of lagoon...

Burial Cementation in the Devonian, Kaybob Reef Complex, Alberta, Canada

P. K. Wong, Alan Oldershaw

Journal of Sedimentary Research (SEPM)

... and permeability. High porosities and permeabilities in the reef-margin (flat) facies correlates with a low frequency of stylolites. High frequency and amplitude...

Earth crustal analysis of Northwest Sabah region inferred from receiver function method

Abdul Halim Abdul Latiff, Faridah Othman

Geological Society of Malaysia (GSM)

...). A normalized Gaussian filter is also applied to eliminate high-frequency noise in the receiver functions. It is observed that a width factor of below...

Soft-sediment Deformation Fabric in the Precambrian Bhander Oolite, Central India

Soumen Sarkar , S. K. Chanda, Ajit Bhattacharyya

Journal of Sedimentary Research (SEPM)

...] Section of chertified ooids cut parallel to bedding plane. Note high frequency of circular sections of deformed ooids; dark lines are cracks. Negative...

Well Log Assisted Evaluation of Heavy-Oil Resources--A Status Report: Section IV. Exploration Methods

W. H. Fertl

AAPG Special Volumes

...). Comparative results for oil saturation and porosity are based on core analysis, resistivity, porosity (density/neutron), high-frequency dielectric...

A Regional Geophysical Study of the Chihuahua City Area, Mexico

C. L. V. Aiken, D. L. Garvey, G. R. Keller, P. C. Goodell, Mauricio de la Fuente Duch

AAPG Special Volumes

... required a greater depth. The density contrast was derived by trial and error, where the best solution produced a model with a minimum of high frequency...

Does Local Resuspension Maintain the Benthic Nepheloid Layer in Southeastern Lake Michigan?

Nathan Hawley , Barry M. Lesht

Journal of Sedimentary Research (SEPM)

... lowpass filter to remove the high-frequency variations. Hourly averages were computed prior to applying a fourth-order Butterworth recursive filter...

Annual Layers Revealed by GPR in the Subsurface of a Prograding Coastal Barrier, Southwest Washington, U.S.A.

L.J. Moore,,, H.M. Jol, S. Kruse, S. Vanderburgh, G.M. Kaminsky

Journal of Sedimentary Research (SEPM)

...) waves. Short pulses of high-frequency EM energy (200 MHz in this study) are emitted into the ground from a transmitting antenna. As these pulses...

Morphology of Ocean Basin Seaward of Northwest Africa: Canary Islands to Monrovia, Liberia

Julius Egloff

AAPG Bulletin

... the best subbottom resolution (Freitag et al., 1969). The high frequency of the 3.5 kHz gave fine resolution of the upper strata (Fig. 4...

Winnipegosis Mounds and Prairie Evaporite Formation of Saskatchewan--Seismic Study

D. J. Gendzwill

AAPG Bulletin

..., or distribution. The mounds are much smaller, more irregular, and more numerous than indicated in some earlier reports. They are flat topped, 70 to 100 m high...

Impact of Cretaceous Sea Level Rise and Anoxic Events on the Mesozoic Carbonate Platform of Yugoslavia (1)

HUGH C. JENKYNS

AAPG Bulletin

.... Schlanger, S. O., 1986, High frequency sea level fluctuations in Cretaceous time: an emerging geophysical problem, in K. J. Hsu, ed., Mesozoic...

Structural imaging in the Rocky Mountain Foothills (Alberta) using magnetotelluric exploration

Wen Xiao, Martyn Unsworth

AAPG Bulletin

... the Brazeau thrust and were corrected in two steps:From the high-frequency magnetotelluric data, the surface resistivity of Cretaceous strata east...

Multiscale Gilbert-type delta lobe architecture and heterogeneities: The case of the Roda Sandstone Member

Allard W. Martinius

AAPG Bulletin

... sediment input (magnitude and direction) and efficiently recorded high-frequency variations in sedimentation rate. Figure 3. (A) View toward the north...

Abstract: An Amplitude Variation-Based Hydrocarbon Detection Method for Coal-Underlying Tight Sandstone; #91209 (2025)

Xi Wang, Gang Zhao, Qihai Nie, Yilan Meng, Shang Xu

Search and Discovery.com

... the waveform of the reservoir under the coal seams. While gas-bearing intervals show strong absorption of high-frequency seismic energy, coal seams also show...

Regional Controls from Temporal and Spatial Distribution of Continental Slope and Abyssal Plain Reservoir Systems of the Gulf of Mexico Basin, by W.E. Galloway, P. Ganey-Curry, and T.L. Whiteaker, #50226 (2009).

Search and Discovery.com

Hypothesis for the role of toxin-producing algae in Phanerozoic mass extinctions based on evidence from the geologic record and modern environments

James W. Castle, John H. Rodgers Jr.

Environmental Geosciences (DEG)

... to oxygen depletion during decay, which indirectly causes death of some biota. Toxin-producing algae occupy a wide range of modern marine, brackish...

Models for Marine Evaporite Basins and Evaporite Environments: Chapter 1

Brian W. Logan

AAPG Special Volumes

... fields, related to hemispheric tr de wind systems and latitudinal high-pressure cells; evaporation ranges from 2 m up to values of 8 m/year (Schiffers...

ABSTRACT: Relative Permeability Damage in Undersaturated Reservoirs

Monty E. Hoffman

Rocky Mountain Association of Geologists

... the same mechanisms that cause the underpressuring cause the undersaturation. The sub-capillary pressure equilibrium nature of the reservoirs causes...

Abstract

Eric J. Barron, George T. Moore

Special Publications of SEPM

...-ice system offers even greater utility and application of the wealth of sedimentologic and paleontologic data. Past climates and causes of climate...

Nason Field

Editors: Edward D. Dolly and James C. Mullarkey

Rocky Mountain Association of Geologists

... mineralogy. The very fine grain size, and the high percentage of formation water in the pores and adhering to the grain surfaces, causes the low...

Abstract: The consequences and possible causes of deformation partitioning in the Gander Lake Subzone, northeast Newfoundland

R. E. Holdsworth, R. D’Lemos

Atlantic Geology

...Abstract: The consequences and possible causes of deformation partitioning in the Gander Lake Subzone, northeast Newfoundland R. E. Holdsworth, R. D...

Abstract: A Chronology of Paleozoic Sea-Level Changes

Dr. Bilal Haq

Houston Geological Society Bulletin

... led to new insights into the nature, amplitude, and causes of base-level changes for this era. A “modal mean” Paleozoic sealevel curve is proposed based...

What Are Global Temperatures Doing, and Why Are They Doing It?

Robert C. Shoup

Houston Geological Society Bulletin

... to determine what temperatures are actually doing. What causes temperatures to do what they are doing? The cause of the recent warming trend has been...

Abstract: "Overpressuring: Causes and Effects on Exploration and Drilling"

Najwa Yassir

Petroleum Exploration Society of Australia (PESA)

...: Causes and Effects on Exploration and Drilling" Pore pressures at depth can be so abnormally high that they almost "lift" the weight of the overlying...