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The AAPG/Datapages Combined Publications Database
Showing 1,904 Results. Searched 200,357 documents.
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
Birds of The Big Bend Country
Midge Erskine
West Texas Geological Society
... usually can be seen perched above bodies of water. This bird is aptly named with its striking vermilion head and underparts. The back, wings, and tail...
1986
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
Helium in the Australian Liquefied Natural Gas Economy
Christopher J. Boreham, Dianne S. Edwards, Robert J. Poreda, Thomas H. Darrah, Ron Zhu, Emmanuelle Grosjean, Philip Main, Kathryn Waltenberg, Paul A. Henson
Australian Petroleum Production & Exploration Association (APPEA) Journal
...-condensable LNG tail gas. Helium is commercially extracted worldwide from this LNG tail gas. Australia has one helium plant in Darwin where gas...
2018
Exploring Mesozoic Play Type of Salawati Basin, West Papua, Indonesia: A Modern Study Approach
Tsania Ozza, Michael Sompie, Eli Silalahi, Wah Adi Suseno, Donny Miraza
Indonesian Petroleum Association
... section of the basin, most of the wells were an exploration tail as a result of deepening the well from the Miocene Kais target. Hence, the location...
2019
The Bollan Stegosaurus
Harold R. Bollan
Grand Junction Geological Society
...The Bollan Stegosaurus Harold R. Bollan 1991 53 54 In March 1978, two caudal vertebrae, a fragmented but complete tail spike, and several pieces...
1991
Mid-Mesozoic Paleontology of the Rabbit Valley Area, Western Colorado
Harley J. Armstrong, Walter R. Averett, Marjorie E. Averett, Elizabeth S. McReynolds, David G. Wolny
Grand Junction Geological Society
... line. North of the highway is an amphitheater at the head of McDonald Creek, where the Brushy Basin Member and the overlying Cretaceous Burro Canyon...
1987
Changes in Flow Direction at a Point Caused by Obstacles During Passage of a Density Current
Stephen A. Morris,, Jan Alexander
Journal of Sedimentary Research (SEPM)
... of the obstacle. Internal flow vectors observed with thread flags were radial from the lock before the head reached the obstacle. After the head passed...
2003
Properties of Turbidity Currents of High Density
Ph. H. Kuenen
Special Publications of SEPM
... the tail, of a large enough turbidity current should tend to erode a sandy bottom. On a moderate slope the head should erode and the tail deposit...
1951
Problem Solving of Non Productive Time of Plug and Squeeze Cementing Offshore Kalimantan
Arya Bimaputra, Anton Maladi, Amin Hartoni, Bruce Hobson
Indonesian Petroleum Association
... side holes greater than the flow area of tailpipe and at 90 degree phasing. Length of tail pipe to be at least equal to the plug length with tubing...
2000
Parallel Lamination Formed by High-Density Turbidity Currents
Suzanne F. Leclair, R. William C. Arnott
Journal of Sedimentary Research (SEPM)
... and their geological implications: Sedimentology, v. 47, Suppl. 1, p. 62–94. Leclair, S.F., and Arnott, R.W.C., 2003, Coarse-tail graded, structureless strata...
2005
Anionic Surfactant Mobility in Unsaturated Soil: The Impact of Molecular Structure
Barry J. Allred, Glenn O. Brown
Environmental Geosciences (DEG)
... components such as linear alkyl chain length, number of oxyethylene groups, type of hydrophilic head group (sulfonate, -, vs. sulfate, -O...
2001
The Sedimentology and Alluvial Architecture of a Large Braid Bar, Rio Parana, Argentina
Gregory H. Sambrook Smith, Philip J. Ashworth, James L. Best, Ian A. Lunt, Oscar Orfeo, Daniel R. Parsons
Journal of Sedimentary Research (SEPM)
... in shaping the alluvial architecture through its impact on the frequency of sediment reworking over the bar tops, and, (2) the thickness of large-scale...
2009
Sediment Facies of Platform-Basin Transition, Tongue of the Ocean, Bahamas
Wolfgang Schlager, Andrew Chermak
Special Publications of SEPM
... is the most important factor in shaping the troughs For the Tongue of the Ocean and the Providence Channels Hooke and Schlager in prep proposed that long term...
1979
Pictographs at Paint Rock: On Cliffs near Paint Rock, in Concho County, Texas Indians Once Painted Stories and Sermons in Stone to Record Their Lives, Times, and Religions
West Texas-San Angelo Geological Societies
West Texas Geological Society
... as an ancient Audubon. At another spot an enraged buffalo, its tail upraised, paws the earth. Farther on, birds pass in perpetual flight across a stone...
1961
Lungfish Burrows in the Upper Triassic Chinle and Dolores Formations, Colorado Plateau--Comments on the Recognition Criteria of Fossil Lungfish Burrows: DISCUSSION
James A. McAllister
Journal of Sedimentary Research (SEPM)
... to be head upward, body straight, and the end of the tail curved along the bottom (Fig. 1). The features of the cylindrical lungfish burrows...
1988
A Case Study of a High-Latitude, Towed Streamer 3-D Seismic Survey, #40707 (2011)
Sophie Hildebrand, Allan Ross, Shazia Viceer,
Search and Discovery.com
... meters in diameter. Detachment or destruction of a paravane or a streamer head float could result in catastrophic damage or loss to much...
2011
Finite Difference Modelling: Part IV
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
.... In addition, it has a longer tail and a faster rise (see Ikelle and Amundsen, 2018). Although the head wave travels further than the direct arrival (which...
2019
Microbial mats and ichnofauna of a fluvial-tidal channel in the Lower Pennsylvanian Joggins Formation, Canada
Zabrina M. Prescott, Matthew R. Stimson, Lynn T. Dafoe, Martin R. Gibling, R. Andrew MacRae, John H. Calder, Brian L. Hebert
PALAIOS
... such as palaeocaridacean and anaspidacean syncarids, mysidaceans, and isopods by Minter et al. (2007). Minter et al. (2007) noted that euthycarcinoids possess a tail...
2014