Late Paleozoic Transgressive-Regressive Deposition

Charles A. Ross, June R. P. Ross

Special Publications of SEPM

... and genera generally occurs above unconformities that signal new marine transgressive events and new depositional sequences. The durations of the hiatuses...

Abstract: Late Paleozoic Deformation in the Permian Basin Region: Styles, Patterns, Kinematics and Effects on Petroleum Reservoirs

Steven L. Dorobek

Houston Geological Society Bulletin

... erosion across the crests of these asymmetric anticlines created tectonically enhanced unconformities that may have influenced porosity and permeability...

Abstract: Petroleum Potential and Stratigraphy of Simpson Equivalents in Arkansas and Adjacent Areas, by Raymond W. Suhm; #90961 (1978).

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Le Devonien en Libye et en Tunisie

P. F. Burollet, G. Manderscheid

CSPG Special Publications

... coarse massive sandstone, suggesting a transgressive character as indicated by local unconformities on the edge of the old highs. It is assigned...

Abstract: A 3D Geologic Modeling Study of the Southeast Flank of Humble Field

Anita Trippet

West Texas Geological Society

... Jackson, Frio, and Miocene time resulting in unconformities and associated structural and stratigraphic traps. Faulting on the dome is both radial...

Ordovician and Silurian Stratigraphy, Paleogeography and Depositional History in the Peace River Arch Area, Alberta and British Columbia

B.S. Norford

CSPG Bulletin

... into the adjacent basin. Several Devonian unconformities document later erosion that stripped the Ordovician and Silurian sediments from most...

Extended Abstract: A Closer Look at the Petroleum Potential of the Ngalia Basin, Northern Territory

J. A. Deckelman, J. K. Davidson

Petroleum Exploration Society of Australia (PESA)

... interformational unconformities. The preserved Pro• terozoic to Ordovician sequence, comprised of marine clastics, carbonates, and evaporites...

Abstract: Glacier retreat and relative sea-level changes in Maritime Canada

Rudolph R. Stea, Gordon B. Fader

Atlantic Geology

... and 70 m. Terraces, clinoforrns and significant erosional unconformities on glaciomarine sediments below 90 m, may also indicate greater sea-level...

Sequence Stratigraphy, Subsidence Rates, and Alluvial Facies, Mannville Group, Alberta Foreland Basin

Douglas J. Cant

Special Publications of SEPM

... and sandstones with prominent unconformities fine sandstones lithologic changes the other is comprised mainly of mudstones with thin coals and subsidiary less...

South Lake Arthur Field Analysis of a Frio Unstable Shelf Delta Sequence

Joseph M. Battle, Jr.

GCAGS Transactions

... of the South Lake Arthur Field structure. Shifting depositional patterns and unconformities all relate to the plastic core of prodelta shale underlying...

Prospects and Methods of Exploration for Stratigraphically and Lithologically Shielded Pools in the Paleogene-Miocene Sediments of the Depression Zones of the Southeast Caucasus

G. A. Akhmedov, S. G. Salayev, F. G. Dadashev, E. I. Zeynalova

Petroleum Geology: A Digest of Russian Literature

..., which are caused by forms of the relief of the surface of unconformities. Very favorable in this respect are the oil and gas pools of the Paleogene...

Buried Folds in Downwarps of the Dnieper-Donets Depression

N. S. Lebed, Ye. S. Dvoryanin

Petroleum Geology: A Digest of Russian Literature

... Permian and the Upper Permian. In sectors where anticlines are present in the sedimentary rocks, these unconformities separate structures of different...

Extended Abstract: Paleotopographic and Depositional Environmental Control on “Sweet Spot” Locations in Some Unconventional Resource Shales

Roger M. Slatt, Brenton J. McCullough, Carlos E. Molinares-Blanco, Elizabeth T. Baruch

Houston Geological Society Bulletin

... the Woodford Shale (Oklahoma) and the Barnett Shale (Texas) are prolific unconventional resource shales. Both of them sit atop unconformities on the surface...

Biostratigraphic Evaluation of a Sequence Stratigraphic Bounding Surface: The Cardinal/Leyland Unconformity ("E5/T5 Surface") in the Cardium Formation (Upper Cretaceous; Upper Turonian-Lower Coniacian) at Seebe, Alberta: REPLY

Federico F. Krause, Russell L. Hall, Siegfried D. Joiner, Keith B. Deutsch

CSPG Bulletin

... interval within the middle parts of the P. quadratus Zone, if the unconformities at the two localities represent a continuous horizon (Hall et al., 1994...

Extended Abstract: Paleotopographic and Depositional Environmental Control on “Sweet Spot” Locations in Some Unconventional Resource Shales

Roger M. Slatt, Brenton J. McCullough, Carlos E. Molinares-Blanco, Elizabeth T. Baruch

Houston Geological Society Bulletin

... Shale (Oklahoma) and the Barnett Shale (Texas) are prolific unconventional resource shales. Both of them sit atop unconformities on the surface...

ABSTRACT: Mid-Continent Rift: New Frontier in an Old Area, by Donald M. Davidson, Jr. and Michael G. Mudrey, Jr.; #91043 (2011)

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Stratigraphy of the Upper and Middle Permian of West Texas and Southeast New Mexico: ABSTRACT

Frank E. Lewis

AAPG Bulletin

... present in the Whitehorse in its southern evelopment. Unconformities are recognized as the best time markers because of the changing facies...

The South Sumatra Basin Geologic Setting

C. Caughey, T. C. Cavanagh, J. N. J. Dyer, A. Kohar, Lestarlnl H., R. A. Lorentz, R. Miller, P. Prijosoesilo, A. W. R. Wight, J. N. Wilson

Indonesian Petroleum Association

... as well as angular unconformities separating the Lemat formation from the overlying Talang Akar formation. The top Basement reflection is difficult...

Miocene Systems Tracts of East and West Cameron OCS Areas, Offshore Western Louisiana, Gulf of Mexico

S. Y. Yang , J. S. Watkins , M-J. Jiang , X. Du , B. E. Bradshaw

GCAGS Transactions

... of genetically related strata bounded at its top and base by unconformities and their correlative conformities, as determined from the nature...

Oil-Gas Prospects of the Black Sea Shelf of Bulgaria

V. I. Golovinskiy, I. F. Glumov, Kh. I. Dachev

Petroleum Geology: A Digest of Russian Literature

... structural stages-Paleozoic, Permo-Triassic, and Jurassic-Cretaceous-Paleogene-between which unconformities are present in many places. The Devonian...

Principal Types of Oil and Gas Occurrences in Western Canada: Oil and Gas Occurrences

E. W. Shaw , G. C. Wells

AAPG Special Volumes

... of the various rock series and types is complicated because of a progressional geological history that produced unconformities, shifting basins...

Probable Lower Mississippian Age of the Caballos Novaculite, New Mexico: GEOLOGICAL NOTES

Charles Laurence Baker

AAPG Bulletin

... formations are well delimited by basal unconformities and are easily distinguishable lithologically as well as faunally. The following table gives...

Improved Southeast Asian Biostratigraphical Zonation Schemes Derived from New Deepwater Sections

Stephen Noon, Wantoro, Harsanti Setiani, M. Sukarno, Yuliana A. Pane

Indonesian Petroleum Association

... unconformities and hiatuses are a challenge to complete integration of biostratigraphy and chronostratigraphy, especially in coastal plain and shelf...

Unconformities and Valley-Fill Sequences - Key to Understanding "J" Sandstone (Lower Cretaceous) Reservoirs at Lonetree and Poncho Fields, D-J Basin, Colorado

Frank G. Ethridge, John C. Dolson

Rocky Mountain Association of Geologists

...Unconformities and Valley-Fill Sequences - Key to Understanding "J" Sandstone (Lower Cretaceous) Reservoirs at Lonetree and Poncho Fields, D-J Basin...

Some Features of the Paleotectonic Development of Local Uplifts of the Darvina Bank-Yuzhnaya Tectonic Zone in Connection with their Oil-Gas Prospects

M. Yu. Gasanov

Petroleum Geology: A Digest of Russian Literature

... investigations permit very reliable determinations to be made of the time of formation of stratigraphic surfaces, tracing of possible breaks and unconformities...