Opening Pandora 's Box: The Issue of Sequence Stratigraphic Terminology

Bill Devlin

Houston Geological Society Bulletin

... as unconformities and their correlative conformities. Allostratigraphic boundaries provide no allowance for the fact that most (all?) discontinuities...

Dedolomitization Fabric in Peels: A Possible Clue to Unconformity Surfaces: NOTES

Moshe Braun, Gerald M. Friedman

Journal of Sedimentary Research (SEPM)

...), Dedolomitization is usually a surface phenomenon related to weathering surfaces and hence is commonly found below unconformities. These unconformities may...

Onlap, Offlap, Overstep, and Overlap: DISCUSSION

Frederick M. Swain

AAPG Bulletin

... pinching-out of sediments above unconformities," and strike-overlap, "the regular truncation of sediments below unconformities." In a discussion...

Passive Margins: An Update of U.S. Geological Survey Seismic Reflection Line 25 Across the New Jersey Shelf, Slope, and Upper Rise

J. S. Schlee, C. W. Poag, J. A. Grow

AAPG Special Volumes

... they are separated by unconformities that are marked by indications of downslope mass-sediment displacement (turbidity currents, debris flows, and slumps...

Seismic Stratigraphy and Global Changes of Sea Level: Part 2. The Depositional Sequence as a Basic Unit for Stratigraphic Analysis: Section 2. Application of Seismic Reflection Configuration to Stratigraphic Interpretation

R. M. Mitchum Jr., P. R. Vail , S. Thompson III

AAPG Special Volumes

... of genetically related strata and bounded at its top and base by unconformities or their correlative conformities. This concept of a "sequence...

Sequences and Systems Tracts--A Sedimentologic View: Chapter 4

Wolfgang Schlager

AAPG Special Volumes

..., is to recognize sequences and sequence boundaries as unconformities and sediment packages with internally coherent bedding patterns respectively. We...

Unconformities in Oklahoma and Their Importance in Petroleum Geology

Edward Bloesch

AAPG Bulletin

...Unconformities in Oklahoma and Their Importance in Petroleum Geology Edward Bloesch 1919 253 285 3 1. (Annual) The unconformities in Oklahoma have...

Sequence Stratigraphy: A New Look at Old Rocks

Norman J. Hyne

Tulsa Geological Society

..., correlate, and map sedimentary rocks. Time-stratigraphic mapping in the field was first done using unconformities and marker beds. It did not become...

Eustatic Sea Level Changes Interpreted from Seismic Stratigraphy: A Critique of the Methodology with Particular Reference to the North Sea Jurassic Record

Andrew D. Miall

AAPG Bulletin

...., and J. S. Schlee, 1984, Depositional sequences and stratigraphic gaps on submerged United States Atlantic margin, in Interregional unconformities...

Sequence Stratigraphy for Explorationists - Workshop Summary

Bruce Hart, Nikki Strong

PTTC

... and type). The timelines allow for correlations across a broad area and relate all factors into predictive models. Unconformities are major sequence...

Stratigraphic-Trap Classification: Geologic Exploration Methods

Gordon Rittenhouse

AAPG Special Volumes

... starts with the simple concept that stratigraphic traps are adjacent to unconformities or they are not. For traps that are not adjacent...

Practical Sequence Stratigraphy in Onshore Exploration and Development, with Examples from the Yegua and Cotton Valley Trends

Ewing, Thomas E.

GCAGS Transactions

... focuses on unconformities. We must appreciate depositional unconformities (generated by relative sea level (RSL) change or shelf-margin failure) as one...

Synthetic Seismic Sections from Biostratigraphy: Environmental Process: Model Investigation of Margin Environmental and Tectonic Processes

Jan E. van Hinte

AAPG Special Volumes

... chronostratigraphy for marine well sections which include calculated estimates for the missing intervals at unconformities. A new kind of cross section...

Onlap and Strike-Overlap: GEOLOGICAL NOTES

Frank A. Melton

AAPG Bulletin

...------------------------------ fundamental, concepts of stratigraphy: (1) the regular and progressive pinching-out of sediments above unconformities, and (2) the regular truncation...

Passive Margins: Tertiary Hiatuses in Western Approaches

C. Ravenne, C. Muller, and L. Montadert

AAPG Special Volumes

... profiles. Two important hypotheses arose from this work: (1) major unconformities should be recognized worldwide--at least on passive margins; and (2...

Using Sonic and Seismic Indications of Coastal Plain Unconformities to Suggest Missing Sediments and Downdip Development of the Eastern Atlantic Coastal Plain and Shelf; #40822 (2011)

Douglas Wyatt and Michael Waddell

Search and Discovery.com

...Using Sonic and Seismic Indications of Coastal Plain Unconformities to Suggest Missing Sediments and Downdip Development of the Eastern Atlantic...

Catalog of Hanna Basin Stratigraphy

Don F. Cardinal, Greg T. Parsons

Earth Science Bulletin (WGA)

... of Wyoming: Engineering and Mining Journal, vol. 73, p. 721. Most Significant: Merewether, E. A., and Cobban, W. A., 1972, Unconformities within...

Relation of Upper Cretaceous to Eocene Structures in Louisiana and Arkansas

A. F. Crider

AAPG Bulletin

...) that no major erosional unconformities are present within the Eocene or at the contact between the Eocene and the Cretaceous. UNCONFORMITIES...

Section Four: Hydrocarbon Accumulations on Diapiric Structures

New Orleans Geological Society

... angular unconformities. In such cases, typical of the Oligocene producing trend (Figure 27), the larger accumulations often are found relatively shallow...

Stratigraphic Analysis and Reservoir Prediction in the Eocene Yegua and Cook Mountain Formations of Texas and Louisiana

Marc B. Edwards

Houston Geological Society Bulletin

... environmental trends. Large-scale slope failures occurred several times during Yegua deposition, resulting in regional erosional unconformities...

Geology of California: Some Corrections: GEOLOGICAL NOTES

R. D. Reed

AAPG Bulletin

... will be published at an early date. 2. With reference to unconformities, some of the statements in the Geology of California seem also to have been misleading...

Porosity Prediction in Sandstones Using Erosional Unconformities

G. Shanmugam

AAPG Special Volumes

...Porosity Prediction in Sandstones Using Erosional Unconformities G. Shanmugam 1990 1 23 M 49: Prediction of Reservoir Quality through Chemical...

ABSTRACT: Upper Paleozoic Tectonostratigraphic Framework for the Western Margin of North America; #90012 (2003)

Walter S. Snyder, James H. Trexler Jr., Vladimir I. Davydov, Patricia Cashman, Tamra A. Schiappa, Dustin Sweet

Search and Discovery.com

... of tectonically-controlled sedimentary basins. Unconformities that separate genetically related stratigraphic successions provide the key for understanding...

Episodic Development of Helderbergian Paleogeography, New York State, Appalachian Basin

P. W. Goodwin, E. J. Anderson

Dallas Geological Society

... reveals cryptic small scale unconformities with a recurrence interval of hundreds of thousands of years. Produced by major sea-level falls...

Episodic Development of Helderbergian Paleogeography, New York State, Appalachian Basin

P. W. Goodwin, E. J. Anderson

CSPG Special Publications

... reveals cryptic small scale unconformities with a recurrence interval of hundreds of thousands of years. Produced by major sea-level falls...