Shallow Transgressive Onlap Model for Ordovician and Devonian Organic-Rich Shales, New York State

Langhorne B. Smith

Unconventional Resources Technology Conference (URTEC)

... of organic-poor turbidite deposition. The organic-rich black shales commonly overlie, onlap and pinch out on unconformities, some of which are demonstrably...

Abstract: Facies Models, Depositional Systems, Sequences, and Correlation: Dimensional and Temporal Resolution of Lithostratigraphy

William E. Galloway

Houston Geological Society Bulletin

... fundamental elements for correlation and analysis. Depositional sequence analysis emphasizes the importance of erosional unconformities produced by fluctuating...

Abstract: Geologic History--Key to Accumulation at Cedar Creek, by James H. Clement; #90973 (1976).

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Beaverhill Lake Megasequence

C. V. Campbell

Special Publications of SEPM

... unconformities, the configuration of the connection of this basin to the deepwater seaway in the Northwest Territories is unknown. The basin is fringed...

ABSTRACT: Regional Offshore Geology of Central and Western Solomon Islands and Bougainville, Papua New Guinea

J. G. Vedder, J. B. Colwell, T. R. Bruns, A. K. Cooper

Circum Pacific Council Publications

...(?) and younger sedimentary rocks. As many as five lenticular seismic-stratigraphic units can be identified on the basis of unconformities and abrupt...

How to Organize a Strat Trap Search Program: Abstract

Roger M. Matson

Tulsa Geological Society

... and relatively free of unconformities. As correlations progress shelfward, one must frequently look back and tie into his traverse to establish...

Abstract: Keynote Address: Yesterday, Today, and Tomorrow, by John E. Kilkenny; #90976 (1976).

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Neogene Seismic Sequences and Structural Styles in "B" and Peusangan Blocks, North Sumatra Basin, Indonesia

Y. F. Wang, F. M. Budijanto, M. L. Johnson, R. S. A. Siringoringo

Indonesian Petroleum Association

... unconformities of possible eustatic origin. A chronostratigraphic analysis indicates that these formations are associated with unconformities of various...

Abstract: Legislation and "Tomorrow's Oil from Today's Provinces", by Arthur O. Spaulding; #90976 (1976).

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Summary of the Stratigraphy of the Minnelusa Formation, Powder River Basin, Wyoming

Donald I. Foster

Wyoming Geological Association

... of the Minnelusa formation of the Powder River Basin and adjacent outcrop areas. Regional unconformities provide a basis for subdividing the Minnelusa formation...

Abstract: The Windsor Group: Overlooked Petroleum Potential Onshore Nova Scotia, Canada

P. Harvey, P. Durling, P. Mukhopadhyay

The Society for Organic Petrology (TSOP)

..., brecciated and karst features, association with base metal deposits and unconformities which can provide the necessary components of a petroleum play...

Exhumed portuguese Oil Field Suggests Conjugate Potential

Ian Davison, Pedro Barreto

GEO ExPro Magazine

... a striking stripy appearance to the outcrop. Two unconformities are exposed adjacent to the diapir (see photo below). The lowermost unconformity...

Buried Ridges in West Texas: GEOLOGICAL NOTES

Sidney Powers

AAPG Bulletin

... the structure of the areas either at the surface (because of unconformities and lack of exposures) or underground. In May, 1923, the Big Lake field...

Abstract: High Resolution Sequence Stratigraphy of The Leonardian Bone Spring Formation, Northern Delaware Basin, Eddy and Lea Counties, New Mexico: Designation of Anoxic Zone Overprint upon Highstand Pelagic Carbonate Productivity Punctuated by Lowstand Terrigenous Derived Organics

John D. Pigott, Charles B. Crosby, Kulwadee L. Pigott

West Texas Geological Society

... overlie the basal Wolfcampian Unconformity and are bounded at the top by the Leonardian Unconformity. These two unconformities represent second order...

Abstract: Session 7: New Insights in Mature Basins: Exploring New Insights Off the Coast of West Sarawak

Khairul Hamidi B Khalid, H. Jalil, M. Iskandar, H. Harun, F. Zahari, E. Marfisi, S Granet, PY Chenet, Zuhar, B. Hashim

Southeast Asia Petroleum Exploration Society (SEAPEX)

... and III (Oligocene to Lower Miocene), Cycle IV, with associated carbonate pinnacles, and younger Cycles (V to VIII). The main unconformities (Late Eocene...

Abstract: On the nature, timing and relationships of Late Precambrian tectonic events on the southeastern (Gondwanan) margin of the Newfoundland Appalachians

S. J. O’Brien, G. R. Dunning, R. D. Tucker, C. F. O’Driscoll, B. H. O’Brien

Atlantic Geology

.... 575 to 550 Ma. Unconformities and intrusive relationships between precisely dated rocks demonstrate that amalgamation of major, distinctive tectonic...

Abstract: Evidence for the role of the Pocologan, New Brunswick and Burlington, Massachusetts shear zones in the Neoproterozoic Wilson cycle

James W. Skehan, Nicholas Rast

Atlantic Geology

... Proterozoic supercontinent, was involved in the formation of grabens. This led to the subGreen Head and sub-Westboro unconformities at ca. 700 Ma. (2...

Third-Order Depositional Sequences of the Mesozoic Succession of Sverdrup Basin

Ashton F. Embry, James A. Podruski

CSPG Special Publications

... is tens to hundreds of metres thick and represents a time span of four to eight million years. Subaerial unconformities or ravinements bound...

Cretaceous Chalks, Texas and Arkansas: GEOLOGICAL NOTES

N. L. Thomas, E. M. Rice

AAPG Bulletin

.... It is evident that chalks, like shales and sands, tend to be lenticular both on a small and a large scale, not because of unconformities, but rather...

Abstract: A comparision of swath bathymetric data and sidescan sonograms from the inner Scotian Shelf off Halifax

G. B. J. Fader, R. D. Parrott, R. Courtney, B. Nichols, S. S. Pecore, R. O. Miller

Atlantic Geology

... patches often with boulders, and exposed bedrock with broad flat unconformities developed across outcropping beds. Terrains that appear to represent...

Abstract: Morphology and depositional facies, Inner Scotian Shelf near Halifax Harbour: implications for Late-Glacial sea-level

R. R. Stea, G. B. J. Fader

Atlantic Geology

... are often characterized by seismic facies with a ponded style of deposition planed by the sea surface or by erosional unconformities near the surface...

Occurrences of Gas on Northwest Flank of South Liberty Dome, Liberty Country, Texas

Jack W. Craig

AAPG Special Volumes

..., lenticularity of sandstone beds, thinning of sections, and at least two possible unconformities. Figure 4 is a map contoured on an electrical-log...

Unlocking fractured basement reservoirs

Molly Turko

GEO ExPro Magazine

... in granite, can increase brittleness and fracture density, making the study of erosional unconformities crucial. Fractured basement reservoirs follow...

Abstract: Paleozoic Hydrocarbon Habitat in the Arabian Plate

Abdulkader M. Afifi

Houston Geological Society Bulletin

...--------------- unconformities. The paleo-environments ranged from arid to glacial, reflecting the drift and rotation of the region during the Paleozoic from equatorial...

Preservation of Oil During Erosion of Reservoir Rocks: DISCUSSION

Joseph S. Irwin

AAPG Bulletin

... Bulletin (FOOTNOTE 1) Dorsey, discussing as a class those oil fields of the United States which are productive from porous rocks below unconformities...