Structural Evolution and Main Controlling Factors of Paleogene Hydrocarbon Accumulation in Termit basin, Eastern Niger

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Lineament Patterns on the Moon, Mars and Mercury

G. Fielder, R. J. Fryer, P. J. S. Gash, J. L. Whitford-Stark, L. Wilson

Utah Geological Association

... preferentially in two orthogonal directions; one of these areas, and the corresponding histogram, is shown in Fig. 4. Preliminary mapping of all types of major...

Rock Physics of Fractured Carbonates

Lev Vernik, Alan Mur

International Meeting for Applied Geoscience and Energy (IMAGE)

... tensor of the background rock, 𝑺 𝒊𝒋 = 𝑺 𝒃 + 𝜟𝑺 𝒄 (2) are then introduced and modeled considering beds with two orthogonal vertical joint sets...

The Radkow and Szczeliniec Sandstones: An Example of Giant Foresets on a Tectonically Controlled Shelf of the Bohemian Cretaceous Basin (Central Europe)

Tomasz Jerzykiewicz, Jurand Wojewoda

CSPG Special Publications

... cross-stratified sets. The boundary between these two parts is erosional and easily identified throughout the area. The following three sedimentary...

Primary and Secondary Structural Features in the Eastern Portion of the South Mountain Batholith, Southwestern Nova Scotia: Implications for Regional Stress Orientations During Intrusion

R. J. Horne, M. C. Corey, L. J. Ham, M. A. MacDonald

Atlantic Geology

..., and for the entire area. Stereonets of the above data sets (Figs. 4a-f) indicate that steeply dipping, roughly orthogonal trends (northeast...

High Resolution Magnetic Polarity Stratigraphic Study of the Miocene Monterey Formation of California--Results From Shell Beach Section, Pismo Basin: Paleoclimatic, Paleoceanographic, and Tectonic Implications

S. Khan Omarzai, R.S. Coe, J.A. Barron

Circum Pacific Council Publications

... of nine "normal" and eight "reversed" magnetozones, two of which are defined with an average resolution of ±50,000 years. Constrained by limited...

Tectono-Stratigraphic Evolution of South Atlantic Extensional Rifted Margins: Constraints from Sandbox Analogue Modeling, #30204 (2011)

A. Cappelletti, F. Salvi, M. Meda, C. Cavozzi, B.R. Chowdhury, Y. Nestola, A. Argnani, F. Tsikalas, C. Magistroni, S. Dalla, M. Roveri, N. Bevilacqua

Search and Discovery.com

... extension at a velocity of 1 to 3 cm/hour; this wall is attached to two moving sidewalls that help pulling the sand/silicone layer-cake. Two end-member sets...

Preservation of Autogenic Processes and Allogenic Forcings in Set-Scale Aeolian Architecture II: The Scour-and-Fill Dominated Jurassic Page Sandstone, Arizona, U.S.A.

Benjamin T. Cardenas, Gary Kocurek, David Mohrig, Travis Swanson, Cory M. Hughes,, Sarah C. Brothers

Journal of Sedimentary Research (SEPM)

..., truncating two lower sets of cross-strata in the same outcrop-scale package. B) Interpreted panorama with mapped outcrop-scale bounding surfaces, set-bounding...

Mechanism and continuity of gypsum smears in the East Qiulitage anticline, Kuqa foreland basin, China

Tong Wu, Xiaofei Fu, Haixue Wang, Mingxu Lu, Lingdong Meng, and Lei Gong

AAPG Bulletin

... smeared along two major fault zones, where a few fissures developed and help accommodate the strain to some extent. (C) Field sketch showing...

Magnetic Stratigraphy and Tectonic Rotation of the Upper Paleocene Pattiway Formation, Caliente Range, San Luis Obispo County, California

Donald R. Prothero, Robert B. Vacca

Pacific Section SEPM

... of Opdyke et al. (1977), which are statistically clustered; circles with diagonal pattern are Class II sites, which had only two samples, so no statistics...

Facies architecture and time stratigraphic relationships of a confined trunk-tributary valley fill and unconfined fluvial system in the backwater of the Turonian Ferron-Notom Delta, Utah, U.S.A.

David Kynaston, Janok P. Bhattacharya, Brad S. Singer, Brian R. Jicha

Journal of Sedimentary Research (SEPM)

... and timing of 32 fluvial aggradation cycles (FACs) and 9 fluvial-aggradation cycle sets (FAC sets) in this sequence. The new dates show that the entire...

Spatial Variations in Magnetic Properties and Paleomagnetic Directions in the Duperow Formation, Williston Basin

Maria Cioppa

Saskatchewan Geological Society

... plot consists of two separate plots that allow visualization of the magnetization vector in three dimensions. Solid circles represent projections...

Paleomagnetism of the Avalonian Finn Hill sequence of Eastern Newfoundland, Canada

M. K. Seguin

Atlantic Geology

...' S.DOWN ii 2 0 ° C Fig. 5 - Representative orthogonal thermal demagnetization diagrams (Zijderveld 1967) of successive magnetization vectors for two...

Fracture Definition by Surface Seismic at the Bluebell-Altamont Field, Uinta Basin, Utah

Norman Harthill, C. Richard Bates, Heloise B. Lynn, K. Michelle Simon

Rocky Mountain Association of Geologists

... to define the orientation of open gas-filled fractures. In the Bluebell-Altamont field, we acquired two orthogonal multi-component reflection seismic...

Using Machine Learning Methods to Identify Coals from Drilling and Logging-While-Drilling LWD Data

Ruizhi Zhong, Raymond L. Johnson Jr., Zhongwei Chen

Unconventional Resources Technology Conference (URTEC)

... (PCA) are presented. Then different machine learning algorithms and data manipulation techniques are introduced. Next, two sets of results from six...

Automated, Quantitative Assessment of Basin History from a Multiwell Analysis

Edward W. Mason, Robert Ehrlich

AAPG Bulletin

.... Evans, J. C., R. Ehrlich, D. Krantz, and W. Full, 1992, A comparison between polytopic vector analysis and empirical orthogonal function analysis...

Paleocurrent Analysis of Trough Cross Stratification

R. H. Dott, Jr.

Journal of Sedimentary Research (SEPM)

...). FIG. 2. Stereonet plot showing poles to cross sets (solid dots) and plunge of trough axes (circles). Note almost equal numbers of oppositely-plunging...

Campanian Paleoseismites of the Elk Basin Anticline, Northern Bighorn Basin, U.S.A.: A Record of Initial Laramide Deformation

William T. Jackson, Jr.,, Mervin J. Bartholomew, William R. Dupré, Taylor F. Armstrong, Kevin G. Stewart

Journal of Sedimentary Research (SEPM)

..., Bulletin, v. 113, p. 482–494. Caputo, R., 1995, Evolution of orthogonal sets of extensional joints: Terra Nova, v. 7, p. 479–490. Cross, T.A., 1986...

Depths of Modern Coastal Sand Clinoforms

Neil C. Mitchell, Gerhard Masselink, John M. Huthnance, Luis M. Fernandez-Salas, Francisco J. Lobo

Journal of Sedimentary Research (SEPM)

... stresses at the rollovers. Two sets of values are shown in the right-hand graphs where two grain-size values are given in Table 1. Dotted lines...

Structural Architecture of the Gorgon Platform, North West Shelf, Australia

K. D. McCormack, K. McClay

Petroleum Exploration Society of Australia (PESA)

.... Numbered circles represent Fault Set 1 to 4 identified and discussed in this study. TWT = two-way travel time. Gorgon 1, North Gorgon 2, North Gorgon...

Rate Transient Effects of Various Complex Fracture Network Topologies in Unconventional Gas Reservoirs: A Numerical Simulation Study

Jiamin Jiang, Rami M. Younis, Leslie Thompson, Zhe Liu

Unconventional Resources Technology Conference (URTEC)

... for accurately modeling. Fig. 1: Schematic diagram of the types of fracture with various levels of complexity (Warpinski et al. 2008). Two classes...

Magnetic Stratigraphy and Tectonic Rotation of the Lower Miocene (Type Saucesian) Rincon Formation, Ventura and Santa Barbara Counties, California

Donald R. Prothero, Stacey G. Rapp

Pacific Section SEPM

... reported from nearby rock units in the Transverse Ranges. The Tajiguas Landfill section had three zones of reversed polarity alternating with two zones...

Rethinking the Incised-Valley Fill Paradigm For Campanian Book Cliffs Strata, Utah–Colorado, U.S.A.: Evidence For Discrete Parasequence-Scale, Shoreface-Incised Channel Fills

Simon A.J. Pattison

Journal of Sedimentary Research (SEPM)

... (white circles), and Shell cores (black circles) are shown. Distances between adjacent measured sections are projected orthogonal to the N14°E...

Abstract: Rift Deformation Produced by Combined Extension and Shearing

Martha O. Withjack

Earth Science Bulletin (WGA)

... lithospheric segments. If the axis and displacement direction are not orthogonal, both extension and shearing contribute to the rift deformation...

Abstract: AFMAG: Geotech’s New Airborne Audio Frequency Electromagnetic (EM) Systemn

Bob Lo and Petr Kuzmin

Houston Geological Society Bulletin

... to damp vibrations and de-rotate the electromagnetic (EM) fields respectively. Three orthogonal coils are used to measure the horizontal and vertical...