A review of the genesis, evolution, and prediction of natural fractures in deep tight sandstones of China

Lianbo Zeng, Lei Gong, Yunzhao Zhang, Shaoqun Dong, and Wenya Lyu

AAPG Bulletin

... et al., 2020a–c); and geophysical methods (e.g., poststack coherence, curvature, likelihood, prestack amplitude variation with azimuth) (Lohr et al...

ABSTRACTS: AAPG International Conference, September 21-24, 2003, Barcelona, Spain, #90017 (2003)

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Structural and Igneous Geology of the Henry Mountains, Utah

Charles B. Hunt

Utah Geological Association

... was wedgeshaped. Coherence and competency of the invaded rocks appear to have been an important factor controlling the stratigraphic distribution...

Alluvial Fans and their Natural Distinction from Rivers Based on Morphology, Hydraulic Processes, Sedimentary Processes, and Facies Assemblages

Terence C. Blair , John G. McPherson

Journal of Sedimentary Research (SEPM)

... the coherence of the mass is preserved due to relatively low levels of disintegration and internal mixing (Yarnold and Lombard 1989; Yarnold 1993...

Geologic Framework of the Bering Sea Crust

A. K. Cooper, M. S. Marlow, D. W. Scholl

Circum Pacific Council Publications

... internal reflective coherence, probably because they are deformed or have a massive structure. Basement refers to rock units that are probably composed...

Sedimentology of Some South Carolina Tidal-Creek Point Bars, and a Comparison With Their Fluvial Counterparts

John H. Barwis

Dallas Geological Society

... ratio is high, a single cell is likely to be unstable and multiple cells develop (Nemenyi, 1946; Leopold and Wolman, 1960). Because of bank coherence...

Petrology and Age of Dredge Samples Collected in the Central Basin, Vanuatu

David P. Johnson, Denis J. Belford, Alan N. Carter, Anthony J. Crawford

Circum Pacific Council Publications

...) as indicated by acoustic tran­ interbedded cal- sparency and in­ carenite and cal- coherence cilutite Maewo G p . , Pen­ (Erosion on Malaku...

Geology of the Central Basin Region of the New Hebrides Arc Inferred from Single-Channel Seismic-Reflection Data

H. Gary Greene, David P. Johnson

Circum Pacific Council Publications

... Santo) as indicated by acoustic tran­ interbedded cal­ sparency and in­ carenite and cal- coherence cilutite late Miocene Maewo G p . , Pen...

Hot Fan or Cold Outwash? Hypothesized Proglacial Deposition in the Upper Paleozoic Cutler Formation, Western Tropical Pangea

Gerilyn S. Soreghan, Michael J. Soreghan, Dustin E. Sweet, Katherine D. Moore

Journal of Sedimentary Research (SEPM)

... debris flows readily transform into dilute flows (owing to hydroplaning, etc.), whereas subaerial debris flows can maintain their coherence over great...

Taphonomy and paleoecology of a bonebed from the Prince Creek Formation, North Slope, Alaska

Roland A. Gangloff, Anthony R. Fiorillo

PALAIOS

... of the individuals as well as the fragile nature of the vertebral neural arches, which is in opposition to the coherence of the centra. It must...

Planform and Facies Variability in Asymmetric Deltas: Facies Analysis and Depositional Architecture of the Turonian Ferron Sandstone in the Western Henry Mountains, South-Central Utah, U.S.A.

Christopher R. Fielding

Journal of Sedimentary Research (SEPM)

... Young University, Geology Studies, v. 30, p. 145–169. Snedden, J.W., and Nummedal, D., 1990, Coherence of surf zone and shelf current flow...

Sedimentology of Some South Carolina Tidal-Creek Point Bars, and a Comparison With Their Fluvial Counterparts

John H. Barwis

CSPG Special Publications

... ratio is high, a single cell is likely to be unstable and multiple cells develop (Nemenyi, 1946; Leopold and Wolman, 1960). Because of bank coherence...

Linking Onshore–Offshore Sediment Dispersal in the Golo Source-to-Sink System (Corsica, France) During the Late Quaternary

Tor O. Somme, David J. W. Piper, Mark E. Deptuck, William Helland-Hansen

Journal of Sedimentary Research (SEPM)

...; Ermolli and di Pasquale 2002; Giardini 2007) and the Mediterranean region (Tzedakis et al. 2003; Roucoux et al. 2005). The regional coherence in vegetation...

Eocene Tectonics and Sedimentation in the Colorado Plateau - Rocky Mountain Area

Charles E. Chapin, Steven M. Cather

Rocky Mountain Association of Geologists

... these zones is thought to be due to intense deformation that has destroyed reflector coherence. Two subparallel, closely spaced, vertical to steeply...

The Pre-History of the Rule of Capture

Terence Daintith

Petroleum History Institute

... (with little success in terms of legal coherence) to give legal expression to industry expectations and practice. Oil Creek was not the only location where...

Inventory of Diagenesis in Holocene-Recent Carbonate Sediments, Shark Bay, Western Australia

Brian W. Logan

AAPG Special Volumes

... pavement into unconsolidated parent sediments beneath. Coherence of crusts is aided by formation of hard pelletoid rinds on upper surfaces (associated...

Geology of the Composite Terranes of East and Central Mindanao

J. W. Hawkins, G. F. Moore, R. Villamor, C. Evans, E. Wright

Circum Pacific Council Publications

... (Villamor and M a r c o s , 1981) that are deformed but retain a coherence o f rock types. T h e Impasugong Wacke (Oligocene-early Miocene) is graywacke...

Pore-water chemistry: A proxy for tracking the signature of ongoing silica diagenesis

Shahab Varkouhi, Nicholas J. Tosca, Joseph A. Cartwright

Journal of Sedimentary Research (SEPM)

...-removal from the pore water suggests the coherence of these peak concentration depressions with ongoing silica diagenesis (Fig. 14A, B). Fig. 14...

Early Diagenesis and Lithification in Carbonate Sediments

Gerald M. Friedman

Journal of Sedimentary Research (SEPM)

.... This texture represents an early stage of drusy calcite infilling, enough to give coherence to the rock, but still retaining well-developed porosity...

Stratigraphy, Sedimentation, and Tectonic Accretion of Exotic Terranes, Southern Coast Ranges, California: Convergent Margins: Field Investigations of Margin Structure and Stratigraphy

J. G. Vedder, D. G. Howell, Hugh McLean

AAPG Special Volumes

... (blocks) by Ross (1978) based on petrographic similarity and structural coherence. The largest of these subterranes is the "central block," which extends...

Chapter 4: Higher-Order Structural Elements

Thomas X. Homza, Steven C. Bergman

AAPG Special Volumes

...., 2011). The boundary between the Orogenic Crest and the Herald Fold-and-Thrust Belt is characterized by diffuse zone of spotty seismic coherence...

Carbonate Platform to Basin Transitions on Seismic Data and in Outcrops: Great Bahama Bank and the Maiella Platform Margin, Italy

Gregor P. Eberli, Flavio S. Anselmetti, Christian Betzler, Jan-Henk Van Konijnenburg, Daniel Bernoulli

AAPG Special Volumes

... impedance differences produce some low-coherence reflections that are partly visible through the randomly generated noise (Figures 10B, 14...

The Transition Between Sheet-Like Lobe and Basin-Plain Turbidites in the Hecho Basin (South-Central Pyrenees, Spain)

Eduard Remacha, Luis P. Fernandez, Eudald Maestro

Journal of Sedimentary Research (SEPM)

... within second-order packages and, further, on testing the coherence of the downcurrent evolution of facies (textural and structural divisions) in single...

Geologic History and Paleogeography of Eastern Carpathians: Example of Alpine Geosynclinal Evolution

Lorin R. Contescu

AAPG Bulletin

... and coherence. End_Page 2444------------------------------ Table 2. Metamorphic Formations in Eastern Carpathians (Bucovinian Overthrust System...

Geology of the Eel River Basin and Adjacent Region: Implications for Late Cenozoic Tectonics of the Southern Cascadia Subduction Zone and Mendocino Triple Junction (1)

SAMUEL H. CLARKE, JR.

AAPG Bulletin

... terrane but are characterized by greater stratal coherence, a history of multiple complex folding, a less-pronounced shear fabric, and the absence...