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The AAPG/Datapages Combined Publications Database
Showing 1,819 Results. Searched 195,364 documents.
A Holocene “Frozen Accident”: Sediments of Extreme Paleofloods and Fires in the Bedrock-Confined Upper Huis River, Western Cape, South Africa
Emese M. Bordy, Devon A. Bowen, John Moore,, Mark H. Garnett, Harilaos Tsikos
Journal of Sedimentary Research (SEPM)
... understood, but their combined role in shaping the landscape ecology and contributing to the sedimentary record, particularly in and near bedrock-confined...
2018
Geology on Stamps: 2. More Extinct Animals, Fossils and Minerals
N. S. Haile
Geological Society of Malaysia (GSM)
... to the present day. The stamp shows the peculiar trified tail possessed by some of the Devonian genera, and also seen in the coelocanths. It is believed...
1977
Evolution of a complex early Permian coarse-grained shoreline along a rift basin margin
Antoine Dillinger, Annette D. George, Romain Vaucher
Journal of Sedimentary Research (SEPM)
... Symposium. Rygel, M.C., Fielding, C.R., Bann, K.L., Frank, T.D., Birgenheier, L., and Tye, S.C., 2008 a, The Lower Permian Wasp Head Formation, Sydney...
2021
Deep-Marine Facies Models and the Interrelationship of Depositional Components in Time and Space
G. Shanmugam
Pacific Section SEPM
... current (i.e., tail end) tends to rework sediment and produce traction structures such as current-ripple laminations. The following are characteristics...
1990
Offshore Bar Deposits of Semilla Sandstone Member of Mancos Shale (Upper Cretaceous), San Juan Basin, New Mexico
Neal A. La Fon
AAPG Bulletin
... of a large very fine-gra ned and silty "tail" might produce similar effects. It is also possible that burrowing destroyed all traces of cross-stratification...
1981
Beach Foreshore Sedimentology and Morphology in the Apostle Islands of Northern Wisconsin
Wayne N. Engstrom
Journal of Sedimentary Research (SEPM)
... other process variable, SUMSTP, was able to explain 29% (0.07) of the variation in mean grain size in the bay-head beach model. The positive sign...
1974
Late Quaternary Niger Delta, and Adjacent Areas: Sedimentary Environments and Lithofacies
J. R. L. Allen
AAPG Bulletin
... mainly radially from the head of passes by rivers crossing the floodplain, by tidal currents shaping the interior mangrove swamps, and by wave...
1965
Field Trip B3: Geology of the Island of Grand Manan, New Brunswick: Precambrian to Early Cambrian and Triassic Formations
J. Gregory McHone, Leslie R. Fyffe
Atlantic Geoscience Society Special Publications
.... ........................................ 22 Mafic volcanic breccia, North Head Formation, Swallow Tail Head........................ 22 Sawpit Dyke intruding latest Neoproterozoic...
2014
Transport Mechanisms of Sand in Deep-Marine Environments—Insights Based on Laboratory Experiments—Reply
Hedda Breien, Fabio V. De Blasio, Anders Elverhoi, Johan P. Nystuen, Carl B. Harbitz
Journal of Sedimentary Research (SEPM)
..., transitional flow, intermediate between a turbidity current (turbulent flow) and a debris flow. The flow had a turbulent head which incorporated water...
2011
Constraints on Eolian Grain Flow Dynamics Through Laboratory Experiments on Sand Slopes
Richard R. McDonald , Robert S. Anderson
Journal of Sedimentary Research (SEPM)
..., and then steadily decreased to 10 cm/s towards the tail of the flow. The longitudinal velocity gradients created considerable longitudinal strain rates...
1996
Eduard Wenks Jungle Adventures in Sabah (1936 1939)
Mario M. A. Wannier
Geological Society of Malaysia (GSM)
... times hit sunken logs and once the tail of a crocodile. The latter beast jumped wildly and frightened the men in the towed gobangs!” “Even more...
2017
ABSTRACT: Textural Trends in Deposits of Collapsing Turbidity Currents: Sedimentology of Turbidites and Slurry Beds from the Oligocene Flysch of the East Carpathians, Romania; #90007 (2002)
Zoltán Sylvester, Donald R. Lowe
Search and Discovery.com
... of turbidites give little attention to the fine tail. The results from the Fusaru Sandstone suggest that inverse fine-tail grading is common in Ta/S3 divisions...
Unknown
Centrosaurus Remains from the Barnard Quarry Near Rangely, Colorado
Robert G. Young, Harold R. Bollan
Grand Junction Geological Society
... that was definitely quadrupedal, with a reduced tail and heavy forelimbs. Fingers and toes were spreading, and their tips terminated in hoof-like...
1991
Abstract: Behaviour of Gold and Other Heavy Minerals in Streams Implications for Exploration Geochemistry
W. K. Fletcher
Geological Society of Malaysia (GSM)
..., Canada, have shown that gold is preferentially accumulated at high energy bar-head sites as the annual flood, caused by melting snow, passes. The gold...
1994
On How Some Rays (Elasmobranchia) Excavate Feeding Depressions by Jetting Water
Murray R. Gregory, Peter F. Ballance, Graham W. Gibson, Anthony M. Ayling
Journal of Sedimentary Research (SEPM)
... tail. The width, wing tip to wing tip, of average specimens approaches 1 m, although occasional individuals are much larger. Biologically, the New...
1979
Oil and Gas Developments in New York State and New England During 1969
W. Lynn Kreidler , Arthur M. Van Tyne
AAPG Bulletin
... from 1968 (Table 1). The value of natural gas in New York State for 1969 was estimated at $1,283,490. This value was derived by applying a well-head...
1970
Kelligrews Quarry: Trilobites of the Manuels River Formation
Peter Wallace
Atlantic Geoscience Society Special Publications
... for scientific description in pale ontological studies, even a poorly preserved head or tail is often enough for field identification. Trilobites can...
1998
Chemical Structures and Nomenclature: Chapter 1
Douglas W. Waples, Tsutomu Machihara
AAPG Special Volumes
...). The end closer to the methyl branch is called the "head," and the other end is the "tail." Compounds formed biosynthetically from isoprene units...
1991
Bathyl-Abyssal Environments: Chapter 7
Robert R. Berg
AAPG Special Volumes
..., median diameter 0.18 mm. b. Flow morphology: head, neck (mixing), body, tail. c. Head velocity: vh = 0.7 (gh/w)12/ d. Body velocity: vd = (8gd S/w)12...
1978
Abstract: A Pseudofossil in the Kayan Sandstone at Santubong, Sarawak
H. D. Tjia
Geological Society of Malaysia (GSM)
... the feature to resemble a reptilian tail. To the discoverers (who are non-geologists) the large dimensions of the "tail" seem to represent part of a dinosaur...
1993
Fish-produced Markings on the Outer Continental Margin East of the Middle Atlantic States
Daniel J. Stanley
Journal of Sedimentary Research (SEPM)
... from the head of Wilmington Canyon, approximately 95 nautical miles (176 km) east-southeast of the mouth of Delaware Bay, seaward to the upper...
1971
Observations on Experimental, Nonchannelized, High-Concentration Turbidity Currents and Variations in Deposits Around Obstacles
Jan Alexander, Stephen Morris
Journal of Sedimentary Research (SEPM)
... concentration currents, or directly observe deposition. The currents had a classic form with distinct head, body, and tail (Fig. 1). In all of the runs...
1994
A First Experimentally Derived Classification of Submarine Sediment Gravity Flows; #40554 (2010)
Rafael Manica, Jaco H. Baas, Rogério Maestri, Jeff Peakall, Ana Luiza Borges
Search and Discovery.com
... ungraded muddy sand with coarse‐tail grading near to the top. A new process‐related classification of sediment gravity flows is proposed. Type I...
2010
Multiple scours and upward fining caused by hydraulic jumps: implications for the recognition of cyclic steps in the deepwater stratigraphic record
Kenya Ono, Hajime Naruse, Qifeng Yao, Zhirong Cai, Sojiro Fukuda, Miwa Yokokawa
Journal of Sedimentary Research (SEPM)
... regions in each flow: the head, body, and tail regions (Figs. 5–7). In the head region, the flow velocity increased during the first 1.1–2.9 s. In the body...
2023
Engineering Geology of Sungai Piah Hydro-Electric Project, Perak, Peninsular Malaysia
Saim Suratman
Geological Society of Malaysia (GSM)
... down to a lower elevation, thus developing an effective head of about 680 m and a generating capacity of 46.5 MW . Approximately 20 km of tunne l lines...
1986