Welcome to the new Datapages Archives
Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.
AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.
Welcome to the new Datapages Archives
Search Results > New Search > Revise Search
The AAPG/Datapages Combined Publications Database
Showing 3,665 Results. Searched 200,691 documents.
Fidelity of molluscan assemblages from the Touro Passo Formation (Pleistocene-Holocene), southern Brazil: Taphonomy as a tool for discovering natural baselines for freshwater communities
Fernando Erthal, Carla B. Kotzian, Marcello G. Simões
PALAIOS
.... The fossil assemblage also contains, overall, a higher proportional abundance of relatively thickshelled species, suggesting a genuine bias against...
2011
Exceptional Preservation of Insects in Lacustrine Environments
Dena M. Smith
PALAIOS
..., and temperature profiles (Cohen, 2003). In general, lacustrine environments tend to preserve an abundance of allochthonous taxa with a bias toward those groups...
2012
PARADOX OF DRILLED DEVIL'S TOENAILS: TAPHONOMIC MIXING OBSCURES CRETACEOUS DRILLING PREDATION IN UTAH OYSTERS
LEIF TAPANILA, ASHLEY FERGUSON, ERIC M. ROBERTS
PALAIOS
... pressure. This study indicates that taphonomic mixing may introduce significant bias in drilling incidence. INTRODUCTION The formation of oyster shell...
2015
Permeability, Porosity, and Shear-wave Anisotropy From Scaling of Open Fracture Populations
Randall Marrett
Rocky Mountain Association of Geologists
... collection of fracture aperture and length data (e.g., Baecher and Lanney, 1978; Barton and Zoback, 1992). Censoring bias results from inadequate...
1997
WHAT CAN WE LEARN FROM ALL THOSE PIECES? OBTAINING DATA ON DRILLING PREDATION FROM FRAGMENTED HIGH-SPIRED GASTROPOD SHELLS
ERYNN H. JOHNSON, BRENDAN M. ANDERSON, WARREN D. ALLMON
PALAIOS
...), but less so in gastropods (e.g., Chojnacki and Leighton 2014). Results about the amount of bias introduced by excluding broken bivalve specimens...
2017
Ecological and taphonomic fidelity in fossil crinoid accumulations
David L. Meyer, William I. Ausich
PALAIOS
... Ordovician through Mississippian (Ausich 1997, table 19.2). Regional encrinites are the best-known cases from which suspicions of taphonomic bias arise...
2019
Interpreted Linear Features from Landsat Thematic Mapper Images, Southern Ute Indian Reservation, Colorado
Daniel H. Knepper Jr.
Utah Geological Association
... illumination direction and a peak in the direction perpendicular to the solar illumination direction. These results show a significance bias in the orientation...
1996
Fault and Joint Measurements in Austin Chalk, Superconducting Super Collider Site, Texas
H. S. Nance, S. E. Laubach, A. R. Dutton
GCAGS Transactions
... entirely. Few joints occur in east-west-trending tunnel N40-N45.3 (over 19,000 ft long). Given this tunnel heading, sampling bias (discussed below) cannot...
1994
Reproducibility and Significance of Measurements of Sedimentary Size Distributions
John J. W. Rogers
Journal of Sedimentary Research (SEPM)
... of constant bias. Where two investigators obtain results which are consistently different in some sense, then bias of one or both persons must...
1965
Molecular Simulation of Multi-scale Multi-Component Hydrocarbon Phase Behavior in Liquid-Rich Shale Reservoirs
Fangxuan Chen, Ran Bi, Hadi Nasrabadi
Unconventional Resources Technology Conference (URTEC)
... with other molecules, which prolongs the simulation time to reach equilibrium. To solve this problem, the configurational-bias Monte Carlo (CBMC) insertion...
2021
Machine Learning Applications for Reservoir Pressure Trend Prediction in Potash Area of Delaware Basin
Olabode Thomas Ajibola, James Sheng, Phillip McElroy, Ebru Ulna
Unconventional Resources Technology Conference (URTEC)
... layer, hidden layers, and an output layer. Figure 1. ANN showing X1 to Xn inputs, W1 to Wn corresponding weights, b bias, and f activation function...
2022
Intelligent Prediction of Shale Oil Fracturing Curves Based on A Sequence-to-Sequence Model
Leyi Zheng, Tianbo Liang, Yunjin Wang, Fujian Zhou, Junlin Wu, Bin Wang, Jiaming Zhang, Maoqin Yang, Gong Chen, Xingyuan Liang
Unconventional Resources Technology Conference (URTEC)
... moment as the output of the next moment, which retains the inherent advantages of LSTM in time modeling while avoiding the cumulative prediction bias...
2025
A Comparison of Popular Neural Network Facies Classification Schemes*
Christopher P. Ross, David M. Cole
GCAGS Transactions
.... While all efforts were made to process the data without of artifacts or bias, there is always a possibility that portions of the data may drift from...
2017
Biogeography of Permian Corals and the Determination of Longitude in Tectonic Reconstructions of the Paleopacific Region
Paul Belasky
CSPG Special Publications
... of tectonic relations. Earth and Planetary Science Letters, v. 118, p. 195-212. Belasky, P. 1992. Assessment of sampling bias in biogeography by means...
1994
Quantitatively evaluating the sources of taphonomic biasing of skeletal element abundances in fossil assemblages
Jason R. Moore, David B. Norman
PALAIOS
...; Behrensmeyer, 1991; Lyman, 1994; Behrensmeyer et al., 2000; Caracuel et al., 2005). A taphonomic bias is any taphonomic process (sensu Lyman, 1994...
2009
Facies Mapping from Three-Dimensional Seismic Data: Potential and Guidelines from a Tertiary Sandstone-Shale Sequence Model, Powderhorn Field, Calhoun County, Texas
Hongliu Zeng , Milo M. Backus , Kenneth T. Barrow , Noel Tyler
AAPG Bulletin
... location by adding two "soft" values derived from facies interpretation: bias direction and bias magnitude. Bias direction is simply the depositional...
1996
Quantifying the impacts of early diagenetic aragonite dissolution on the fossil record
Lesley Cherns, V. Paul Wright
PALAIOS
... of this potential for inadequacy of the fossil record, Kidwell (2005) concluded from database analysis that no evolutionary bias could be ascribed...
2009
Using Machine Learning Methods to Identify Coals from Drilling and Logging-While-Drilling LWD Data
Ruizhi Zhong, Raymond L. Johnson Jr., Zhongwei Chen
Unconventional Resources Technology Conference (URTEC)
... are hyperparameters for LR. The final best hyperparameters represent the bias-variance tradeoff. Fig. 7 shows an example of underfitting, good model...
2019
Lithology Controls Ammonoid Size Distributions
Kenneth De Baets, Emilia Jarochowska, Stella Zora Buchwald, Christian Klug, Dieter Korn
PALAIOS
...fication bias, i.e., selective dissolution of smaller specimens (Nohl et al. 2018). In contrast, preferential preservation of smaller specimens (e.g....
2022
NEOTAPHONOMIC SURVEY OF SMALL TAR SEEPS IN SOUTHERN CALIFORNIA
Jessie George, Glen M. MacDonald
PALAIOS
.... We find observations of seasonal seep flow connected to a warm season bias of plant material, making phenology an important consideration...
2024
Vertebrate Taphonomy Applied to the Analysis of Ancient Fluvial Systems
Emlyn H. Koster
Special Publications of SEPM
... for a species whose population is in equilibrium within the regional ecosystem. Distinguishing features of attritional events are a bias towards juvenile, old...
1987
Development of an Exploration Strategy
Lee C. Gerhard, Lee A. Graber, Erling A. Brostuen
West Texas Geological Society
... parameters and geographic bias. The strategy developed demonstrates the process used to prepare an exploration plan that encompasses the corporate...
1989
Modeling and Optimization of Proppant Distributions in Multi-Cluster Hydraulic Fracture-Natural Fracture (HF-NF) Networks
Yidi Wu, George J. Moridis, Thomas A. Blasingame
Unconventional Resources Technology Conference (URTEC)
...Eq. 10 is modified by using a weights matrix (𝑾) and a bias vector (𝒃), as shown in Eq. 11. $$$...
2021
Evaluating The Liquids Potential And Distribution Of West Virginias Marcellus Liquids Fairway
Christopher Smith, Susan Pool, Philip Dinterman, Jessica Moore, Timothy Vance, Timothy Smith, Patrick Gordon, Michael Smith
Unconventional Resources Technology Conference (URTEC)
... was drilled, before or after 2009 (likely due to PDC [polycrystalline diamond compact drill bits); this was the only bias identified due to the age...
2021
Improved Unconventional Development Decisions using Causal Inference
Henry Galvis Silva, Oliver Rojas Conde, Sebastien Matringe
Unconventional Resources Technology Conference (URTEC)
... statistical methods to control for these confounding factors. These factors can bias our estimates of the causal effect, so it is important to control...
2024