Core Orientation by Graphical and Mathematical Methods

Hugh McClellan

AAPG Bulletin

... from the equations (1) to (6) and may be checked backward from the answer by means of those equations if the additional quantity, ^ggr1 (76...

Chapter 4: Visible Geology: Creative Online Tools for Teaching, Learning, and Communicating Geologic Concepts

Rowan Cockett, Tara Moran, Adam Pidlisecky

AAPG Special Volumes

... outcrop or map. Visible Geology allows students to both construct and deconstruct a geologic history. The ability to easily move forward and backward...

Front Matter: Memoir 114: Petroleum Systems Analysis—Case Studies

Mahdi A. AbuAli, Isabelle Moretti, Hege M. Nordgård Bolås

AAPG Special Volumes

... are more or less easy to take into account now, the thrust faults are still challenging and the backward-forward mandatory links for basin modeling...

Recent Reefs

Harry S. Ladd

AAPG Bulletin

... from the standpoint of paleoecology, but in projecting interpretations backward in geologic time we must proceed with increasing caution. Close...

Positive-Relief Bedforms on Modern Tidal Flat that Resemble Molds of Flutes and Grooves; Implications for Geopetal Criteria and for Origin and Classification of Bedforms

Gerald M. Friedman, John E Sanders

Journal of Sedimentary Research (SEPM)

... the name setulf (flutes spelled backward to emphasize their similarities yet diametrically opposite characteristics as compared with flutes; the word setulf...

Sediment Sources and Sedimentation Rates, Chincoteague Bay, Maryland and Virginia

Charles E. Bartberger

Journal of Sedimentary Research (SEPM)

..., in using this curve to estimate ages of peat deposits beneath Chincoteague Bay, a straight-line extrapolation backward in time was made (Fig. 5), which...

What if Climate Skeptics are Wrong? Best Policy Responses in the Face of Anthropogenic Climate Change

H. Sterling Burnett

GCAGS Transactions

... the weapon that has made it dozens of times less dangerous. The popular climate discussion has the issue backward. It looks at man as a destructive...

Cementation of a Pennsylvanian Deltaic Sandstone: Isotopic Data

L. S. Land, S. P. Dutton

Journal of Sedimentary Research (SEPM)

... of authigenic phases in these rocks, we will attempt to work backward in time, beginning with the last-formed phases. Fe-calcite, ankerite, and kaolinite...

Desert Stream Sequences in the Sinai Peninsula

Amihai Sneh

Journal of Sedimentary Research (SEPM)

... narrowing of the floodplain in the dayka results in acceleration of the currents and hence in severe backward erosion. The sediments transported...

Something Old, Something New, Something Borrowed, Something Blue--A Hindsight and Foresight of Sedimentary Geology: PERSPECTIVE

R. H. Dott, Jr.

Journal of Sedimentary Research (SEPM)

... margins. If eustasy, compaction, and depth of water are properly evaluated, then one can work backward to date the initial rifting, or, conversely, one...

Significance of Thin Sets of Eolian Cross-Strata: DISCUSSION

Gary Kocurek, Mary Crabaugh

Journal of Sedimentary Research (SEPM)

... of the interpretations given by Loope and Simpson (1992), and moreover, their observations seem superficial and their meth dology a step backward. ENTRADA...

Populations, Trends, and Cycles in Combined-Flow Bedforms

Indranil Banerjee

Journal of Sedimentary Research (SEPM)

... a strong velocity asymmetry exists between the forward and the backward wave motions, a situation similar to the unidirectional current regime...

Are There Better Alternatives to Standard Rose Diagrams?

Neil A. Wells

Journal of Sedimentary Research (SEPM)

... to be dubious at best, especially with polymodal data. It might seem backward to smooth a data set according to the limitations of its depiction rather...

Maturation Modeling in Otway Basin, Australia

M. F. Middleton , D. A. Falvey

AAPG Bulletin

... to a se smic profile across the southern Australian continental shelf in the Otway basin as a demonstration of the projection backward in time...

Temperature, Subsidence, and Hydrocarbon Maturation in Extensional Basins: A Finite Element Model

J.-CL. De Bremaecker

AAPG Bulletin

... of figure are counted starting at beginning of extension, those at top are counted backward from present (B.P.). Top, upper 20 km; bottom, whole column. HF...

Formation and Evolution of Nonmarine Petroleum in Songliao Basin, China

Yang Wanli, Li Yongkang, Gao Ruiqi

AAPG Bulletin

... and then shrink backward abruptly. Thus, the hydrocarbon evolution rapidly reaches the pyrolyzed dry gas stage. So, in the Songliao basin, hydrocarbon...

Cross Section Balancing in the Central Apennines: An Application of locace (1)

L. SAGE , A. MOSCONI , I. MORETTI , E. RIVA , and F. ROURE

AAPG Bulletin

... an undeformed geometry to a folded one) (Endignoux and Mugnier, 1990) or backward (i.e., from a folded geometry back to the initial configuration). One...

Predicting Permeability from Porosity Using Artificial Neural Networks

S. J. Rogers , H. C. Chen , D. C. Kopaska-Merkel , J. H. Fang

AAPG Bulletin

... input and propagating this error backward through the layers to adjust the weights; this process gives the backpropagation neural network its name...

Seismic interpretation of the Kelasu triangle zone in the southern Tian Shan foothills, northwestern China

Chunming Xu, Xin-yuan Zhou

AAPG Bulletin

...). These backthrusts did not break the upper detachment zone, but wedged backward into it. Considering that the active duplex wedging underneath the backthrust...

Toward a quantitative definition of mechanical units: New techniques and results from an outcropping deep-water turbidite succession (Tanqua-Karoo Basin, South Africa)

G. Bertotti, N. Hardebol, J. K. Taal-van Koppen, S. M. Luthi

AAPG Bulletin

... analyzing subsurface fracture patterns. We adopt a backward approach in which we first acquire fracture data at the outcrops in an assumption-free...

The Northern Sumatra Earthquake of 2004: Forty Years of Ignoring Plate Tectonics, by Arthur E. Berman, #70015 (2005).

Search and Discovery.com

Residual Oil Zones: The Long term Future of Enhanced Oil Recovery in the Permian Basin and Elsewhere, #40787 (2011)

Bob Trentham

Search and Discovery.com

... then parallel to the margin? Working backward from what we see. Characteristics of the ROZ vs. the Main Pay...

Supervised Learning Applied to Rock Type Classification in Sandstone Based on Wireline Formation Pressure Data; #42539 (2020)

Jose Victor Contreras

Search and Discovery.com

... the error gradient across all the connection weights in the network by propagating the error gradient backward in the network (Figure 7). Finally...

Tides and their seminal impact on the geology, geography, history, and socio-economics of the Bay of Fundy, eastern Canada

Con Desplanque, David J. Mossman

Atlantic Geology

... and rather uniform. The moment its inertia is spent, the water starts moving backward toward the sea. The difference is that now, on the outflow...

A Quantitative Method for Evaluating Ecological Risks Associated with Long-Term Degradation of Deep-Sea Plastic-Containing Infrastructure

Alexander N. Testoff, Nicholas A. Nelson, Joseph P. Nicolette

Australian Petroleum Production & Exploration Association (APPEA) Journal

... four iterations of modelled ‘risk’ through forward or backward calculation of a deterministic hazard quotient, mathematically defined as the ratio...