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The AAPG/Datapages Combined Publications Database

Showing 389 Results. Searched 200,357 documents.

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Distribution of Surface Pebbles with Changes in Wave Energy on a Sandy Estuarine Beach

Karl F. Nordstrom , Nancy L. Jackson

Journal of Sedimentary Research (SEPM)

... without regard to longshore position, because the focus of this study is on distribution of surface pebbles related to cross-shore position. Recovered...

1993

Porosity Enhancement from Chert Dissolution Beneath Neocomian Unconformity: Ivishak Formation, North Slope, Alaska

G. Shanmugam , J. B. Higgins

AAPG Bulletin

...) and related near-surface weathering processes. Subsurface samples from both onshore and offshore wells in the Alaskan North Slope were used in this study...

1988

Fractures in sandstone reservoirs with ultra-low permeability: A case study of the Upper Triassic Yanchang Formation in the Ordos Basin, China

Zeng Lianbo, Li Xiang-Yang

AAPG Bulletin

... in such reservoirs are jointed fractures, but fault-related fractures are not developed there.Figure 5. (a) Photo of a tectonic fracture surface in core...

2009

Carbonate rocks: Matrix permeability estimation

Alejandro Cardona, and J. Carlos Santamarina

AAPG Bulletin

..., predicted permeabilities are lower-bound estimates of the formation permeability. Figure 5. Models to estimate the surface-related pore size Dsur...

2020

Tectonic Influences on Petroleum Migration and Speleogenesis in the Guadalupe Mountains, New Mexico and Texas; #120139 (2013)

Harvey R. DuChene

Search and Discovery.com

... Presenter’s notes: Speleogenesis is the process of cave formation. Most caves are epigenic, formed by near-surface processes related to the movement...

2013

Stratigraphy of the Lower Cretaceous (Albian) Salmon Peak Formation of the Maverick Basin, South Texas

Curtis H. Humphreys

South Texas Geological Society Special Publications

... Cretaceous (Albian) Salmon Peak Formation of the Maverick basin is divided into surface-near surface and subsurface occurrences separated by a transition...

1984

Relationship of Two Widespread Guadalupian Subsurface Marker Units (Bowers Sand and Two Finger Limestone) to Outcrop-Defined Sequences in the Guadalupe Mountains, New Mexico and West Texas

Willis W. Tyrrell, John A. Diemer

West Texas Geological Society

... sand bed in the Bowers Sand is interpreted to be a bypass surface related to sea level lowstand. Generally the overlying siliciclastics...

2003

The Triassic Juruá Orogeny and the Tectono-Sedimentary Evolution of Peruvian Oriente Basin. Exploratory Implications

Mozart Cavalcante de Barros, Enio de Paula Carneiro

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... surface related to the epeirogenetic effects of the Caledonian / Taconian Orogeny. In the Acre basin, seismic data suggest the presence...

1991

The Great Salt Lake - an Overview

Robert E. Cohenour

Utah Geological Association

... (101.6 cm/yr). The evaporation rate from the lake surface is related to the salinity of the surface water. If the lake surface is near 4196 feet...

1987

Very Different Crustal Response to Extreme Extension in the Southern Basin and Range and Colorado Plateau Transition

Tom Parsons, Jill McCarthy, George A. Thompson

Pacific Section of AAPG

... lineation, implying that folding of the detachment surface was related to extension (Spencer and Reynolds, 1991). The low-angle fault is cut by a later...

2001

The Impact of Pore Size and Kerogen Maturity on the Behavior of Water in Organic Kerogen Nanopores in Shales

Yinan Hu, Deepak Devegowda, Richard F. Sigal

Unconventional Resources Technology Conference (URTEC)

...e for the kerogen pores of Figures 4 and 5. This is related to surface roughness, and perhaps also to the carbon density in the pore walls. Not...

2015

Uranium in Canada

R. H. McMillan

CSPG Bulletin

... environment, or sorbing on other minerals. Because hydrogenic uranium deposits are solubility controlled and related to the continental surface...

1977

Current Views on the Deposition and Sequence Stratigraphy of the Great Valley Group, Sacramento Basin

Thomas A. Williams

Pacific Section SEPM

... surface is related to a widespread shallow-marine or nonmarine erosional surface present in outcrops of the 'Redding Formation' at the northern end...

1993

Landward Transport of Bottom Sediments in Estuaries of the Atlantic Coastal Plain

Robert H. Meade

Journal of Sedimentary Research (SEPM)

..., is illusory. The variations in suspended matter near the surface are related to the presence of a maximum concentration at the transition between fresh...

1969

Paleosols and Tidal-flat/Lagoon Sequences on a Carboniferous Carbonate Shelf: Sedimentary Associations of Triple Disconformities

Robert Riding, V. Paul Wright

Journal of Sedimentary Research (SEPM)

... surface within the sequence (Swift 1968). The upper erosion surface, related to shoreface migration, has been called a "ravinement" by Stamp (1922...

1981

Pedogenic and Groundwater Silcretes at Stuart Creek Opal Field, South Australia

Medard Thiry, Anthony R. Milnes

Journal of Sedimentary Research (SEPM)

..., 1983, Geochemistry of weathering profile silcretes, southern Cape Province, South Africa: in Wilson, R. C. L., ed., Residual Deposits: Surface Related...

1991

Fourier and Autocorrelation Analysis of Estuarine Tidal Rhythmites, Lower Breathitt Formation (Pennsylvanian), Eastern Kentucky, USA

Ronald L. Martino, Dewey D. Sanderson

Journal of Sedimentary Research (SEPM)

... paleovalleys with considerable relief. This eroded surface was onlapped by Breathitt and Lee strata during the Early and Middle Pennsylvanian. The Ear y...

1993

Geochemical Mass-Balance and Oxygen-Isotope Constraints on Silcrete Formation and Its Paleoclimatic Implications in Southern Australia

John A. Webb , Suzanne D. Golding

Journal of Sedimentary Research (SEPM)

.... 71, p. 6107-6118. MCFARLANE, M.J., AND BOWDEN, D.J., 1992, Mobilization of aluminium in the weathering profiles of the African surface in Malawi...

1998

Evolution of the Coastal Depositional Systems of the Changjiang (Yangtze) River in Response to Late Pleistocene-Holocene Sea-Level Changes

Kazuaki Hori, Yoshiki Saito, Quanhong Zhao, Pinxian Wang

Journal of Sedimentary Research (SEPM)

... of "zigzag" changes of the shoreline. Each parasequence formed during the period of standstill, and its boundary (i.e., marine flooding surface...

2002

Mapping of salt structures and related fault lineaments based on remote-sensing and gravimetric data: The case of the Monte Real salt wall (onshore west-central Portugal)

Fernando Carlos Lopes, Alcides Jose Pereira, Vasco Manuel Mantas

AAPG Bulletin

..., 1982).Surface geologic studies of salt bodies and related tectonic features are not easy. The direct observation of salt rock is commonly hampered...

2012

Aragonite–Calcite Speleothems: Identifying Original and Diagenetic Features

Christine Perrin, Laurent Prestimonaco, Guilhem Servelle, Romain Tilhac, Marion Maury, Patrick Cabrol

Journal of Sedimentary Research (SEPM)

... from change of crystallization (blue line); CCp, primary columnar calcite; A, aragonite; polarized light, crossed nicols. Growth Surface Related...

2014

Taphonomic Analysis of the Lower Pleistocene Pirro Nord Fossil Locality (Pirro 10 Site, Puglia, Southern Italy): A Depositional Model for Vertebrate Assemblages in a Karstic Environment

Marta Zunino, Marco Pavia, Sixto R. Fernández-López, Giulio Pavia

PALAIOS

... is indicative of short-term exposure on the cave surface related to rapid and complete burial. The differences in weathering stages recorded on the upper...

2012

Root Calcretes and Uranium-Bearing Silcretes at Sedimentary Discontinuities In the Miocene of the Madrid Basin (Toledo, Spain)

M. Ángeles Bustillo, Chloé Plet, Ana M. Alonso-Zarza

Journal of Sedimentary Research (SEPM)

... of weathering profile silcretes, southern Cape Province, South Africa, in Wilson, R.C.L., ed., Residual Deposits: Surface and Related Weathering Processes...

2013

Wettability, Oil and Rock Characterization of the Most Important Unconventional Liquid Reservoirs in the United States and the Impact on Oil Recovery

J. O. Alvarez, D. S. Schechter

Unconventional Resources Technology Conference (URTEC)

...s related to rock affinity for water. Surface charge at the rock-fluid interface can be related to the electrical potential on the double layer which i...

2016

Allostratigraphic Subdivision of the Upper Cretaceous Dunvegan, Shaftesbury, and Kaskapau Formations in the Northwestern Alberta Subsurface

Janok Bhattacharya,, Roger G. Walker

CSPG Bulletin

... and may represent a subaerial exposure surface related to the possible E1 sequence boundary (i.e., RSE) referred to above. Allomember E consists mainly...

1991

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