Using Outcrops to Understand and Explain Subsurface Geological Phenomenon: Examples from the Upper Devonian (Famennian) Cleveland Shale Outcrop Belt, Greater Cleveland Metro Area, Ohio

Search and Discovery.com

ABSTRACT: Basin evolution and coal geology of the Donets Basin (Ukraine, Russia): Implications for CBM potential; #90109 (2010)

R. F. Sachsenhofer, V. A. Privalov

Search and Discovery.com

... seam, but also within sandstone reservoirs. There is a clear depth dependency of the gas composition. Within the uppermost few hundred meters CH4...

Abstract: Bozhong 19-6 Field, A Fractured Metamorphic Basement Reservoir, Offshore Bohai Bay Basin, China: An Archean Deeply Buried Hill Play;

Peng Xu, Haizhong Cui, Ying Qie, Longfei Sun, Qingshun Liu, H. Li

Search and Discovery.com

...: weathering leaching pores (fractures), intrainstalline fractures of mineral particles and structural fractures, the fracture is characterized by multistage...

Abstract: Pedogenic Enrichment of Rare Earth Elements in Lignites during the Paleocene-Eocene Thermal Maximum, Williston Basin, North Dakota; #91206 (2023)

Levi D. Moxness, E. C. Murphy, N. W. Kruger

Search and Discovery.com

... positions throughout the Paleocene record of the Williston basin, but appear to often be the result of long-term, low-intensity weathering during...

Abstract: Trace Fossils, Outcrop Observations and Significance of Glossifungites-Demarcated Discontinuity Surfaces in the Jurassic Stratigraphic Succession of Saudi Arabia; #91209 (2025)

Camilo Polo, Mahmoud Al-Nazgah, Abdullah Al-Dhubeeb

Search and Discovery.com

... accompanied by encrustations, dissolution features, cementation and other signs of weathering. Prominent boundaries identified in outcrop...

Depositional Environments and Diagenesis of the Montoya Dolomite

Search and Discovery.com

Ordovician-Silurian Stratigraphic Framework, Macdonald Platform to Ospika Embayment Transect, Northeastern British Columbia

Leanne J. Pyle, Christopher R. Barnes

CSPG Bulletin

...) abruptly overlies the volcanics and is a thick-bedded to massive, light-grey- and brown-weathering dolostone with intervals of doloarenites...

Results and Problems of Heavy Mineral Analysis in Germany: A Review of Sedimentary-petrological Papers, 1936-1948

F. K. Heinz Sindowski

Journal of Sedimentary Research (SEPM)

... during transportation; and, the selective effects of weathering before and after their incorporation in sedimentary rocks. During the period...

Characteristics of Microzonation Modelling in Reservoir Evaluation

Search and Discovery.com

The geomorphological distribution of subaqueous tufa columns in a hypersaline lake: Mono Lake, U.S.A.

Claire E. Keevil, Mike Rogerson, Daniel R. Parsons, Ramon Mercedes-Martín, Alexander T. Brasier, John. J.G. Reijmer, Anna Matthews

Journal of Sedimentary Research (SEPM)

... bodies, which grow at a wider depth range than another region far from an inlet but close to the fault. This demonstrates the importance of meteoric...

Greater Seminole District, Seminole and Pottawatomie Countries, Oklahoma

A. I. Levorsen

AAPG Special Volumes

... thickness of the Caney formation, except in the Pearson Switch area where it has been removed, ranges from 120 to 700 feet, depending on the depth...

Identification of Geological Formations by Growing Vegetation

A. N. Murray

Oklahoma City Geological Society

... produced by the weathering process. If they are not too thoroughly leached, they possess individuality both in physical and chemical characteristics...

Mineralogy and genesis of saproitte and strongly weathered soils in the Appalachian region of Canada

C. Wang, G. J. Ross, J. T. Gray, L. B. Lafrenière

Atlantic Geology

...), and Cape Breton (Nova Scotia). Although in all three sites the bedrock has been strongly weathered, the degree of weathering varied widely...

VITRINITE REFLECTANCE OF TERTIARY COAL ACROSS THE SURFACE OF THE NORTHERN POWDER RIVER BASIN, WYOMING-MONTANA

Mark J. Pawlewicz, Charles E. Barker

Montana Geological Society

... for this discrepancy with the possible exception of weathering of exposed coals and differential erosion. CITED Affolter, R. H., Hatch, J. R...

Stratigraphy and Structure of the Smoky Hill Chalk in Western Kansas

William L. Russell

AAPG Bulletin

.... The difficulties introduced by the effects of weathering and by the complicated structures are considered. The faulting in the Smoky Hill chalk probably occurred...

The Cretaceous-Tertiary Transition in Southwestern Alberta

E. T. Tozer

CSPG Special Publications

... of the Rocky Mountains. On the east limb the beds dip at low angles to the west. Owing to changes in facies in both north-south and east-west directions...

A Petrographic Study of Silcrete from Inland Australia

Stephen H. Watts

Journal of Sedimentary Research (SEPM)

... of intense weathering and silicification. Cryptocrystalline silica is concentrated in random patches, continuous horizons, intergranular voids and immediately...

Thermal Maturity, Tectonostratigraphic Terranes, and Regional Tectonic History: An Example from the Kandik Area, East-Central Alaska

Matthew M. Laughland, Michael B. Underwood, Thomas J. Wiley

Rocky Mountain Section (SEPM)

... by assuming a 25°dip to the fault and 9 km of horizontal distance southeast of the present fault trace. We estimate this depth to be 4 km. If we...

Batholiths are bullies: arc-unroofing trends in detrital zircon fertility and morphology revealed through CT analysis, central California, U.S.A.

Jacqueline J. Epperson, Matthew A. Malkowski, Richard A. Ketcham, Glenn R. Sharman

Journal of Sedimentary Research (SEPM)

... and evaluated 31,384 zircon grains across both datasets. Once separated, each zircon grain was assigned a unique number and calculations were performed...

Raguba Field--Libya Sirte Basin

Philip Brennan

AAPG Special Volumes

.... This zone of steepened dip was termed the Marada flexure (Figure 4), after a nearby oasis of that name (Figure 2). The postulated depocenter...

Stratigraphic and Paleostructural Controls on Hydrocarbon Migration in Cretaceous D and J Sandstones of the Denver Basin

Patrick A. Tainter

Rocky Mountain Association of Geologists

... and Dawson Arkose (Figure 2). The orogeny came to a close in middle Eocene time, at 50 m.y., and a period of tectonic quiescence and deep weathering ensued...

Oil and Gas in Delta-Margin Facies of Dakota Sandstone, Lone Pine Field, New Mexico

Robert R. Berg

AAPG Bulletin

... facies change within the deltaic sequence. The total gas and oil column is 65 ft (20 m), and calculations suggest that about 40 ft (12 m) is trapped...

Petroleum Geology of Kodiak Shelf, Alaska

Michael A. Fisher

AAPG Bulletin

... paleointensities by the Thelliers' method from submarine pillow basalts: effects of seafloor weathering: Jour. Geophys. Research, v. 84, p. 3553-3575...

Burial History and Thermal Maturity, Rocky Mountain Front Ranges, Foothills, and Foreland, East-Central British Columbia and Adjacent Alberta, Canada

Wolfgang Kalkreuth, Margaret McMechan

AAPG Bulletin

... of deformation. Modeling using burial history curves indicates the regional maturation pattern largely reflects variations in the depth and/or duration...

Permeability characterization of natural compaction bands using core flooding experiments and three-dimensional image-based analysis: Comparing and contrasting the results from two different methods

Shang Deng, Lin Zuo, Atilla Aydin, Jack Dvorkin, and Tapan Mukerji

AAPG Bulletin

... evidence for low-temperature kaolinitic weathering and post-formational hydrogen-isotope exchange in Permian kaolinites, Chemical Geology: Isotope...