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The AAPG/Datapages Combined Publications Database
Showing 11,103 Results. Searched 200,619 documents.
Clay Minerals in the Weathering Profile of a Graphitic-Quartz-Muscovite Schist in the Kajang Area, Selangor
J. K. Raj
Geological Society of Malaysia (GSM)
...Clay Minerals in the Weathering Profile of a Graphitic-Quartz-Muscovite Schist in the Kajang Area, Selangor J. K. Raj Clay minerals in the weathering...
1995
Sungei Isahan - A New Primary Tin Occurrence in Sumatra
Michael O. Schwartz, Surjono
Geological Society of Malaysia (GSM)
... the extension of the near-surface roofof the underlying granite. Therefore, the tin occurrence is located in the most favourable geologic situation...
1990
Geophysical Investigation for Groundwater Exploration at UKM's Kuala Pilah Matriculation Centre, Negeri Sembilan
Abdul Rahim Samsudin, Abdul Ghani Rafek, Umar Hamzah
Geological Society of Malaysia (GSM)
... localities within the study area. This conductive layer could be associated with near surface water saturated zone or aquifer. However based on seismic data...
1996
Nickel Resources of Australia--Summary: Minerals
R. Woodall
AAPG Special Volumes
... is flat, deeply weathered, and soil covered. It is only partly explored in terms of near-surface mineral deposits. Extensive surface concealment, leached...
1976
Production, Destruction, and Dilution„The Many Paths to Source-Rock Development
Kevin M. Bohacs, George J. Grabowski Jr., Alan R. Carroll, Paul J. Mankiewicz, Kimberlee J. Miskell-Gerhardt, Jon R. Schwalbach, Mary Beth Wegner, J.A. (Toni) Simo
Special Publications of SEPM
... preservation by keeping organic matter near the surface too long within the zone of active microbial reworking, exposed to oxidants in pore waters...
2005
Seepage-Induced Anomalies, "False" Anomalies, and Implications for Electrical Prospecting
Dorothy Z. Oehler , Ben K. Sternberg
AAPG Bulletin
... resulted in near-surface accumulations of methane, pyrite and marcasite (FeS2), and carbonate. The shallow pyrite and marcasite are the source...
1984
Cllmatic Zones Throughout the Ages
George W. Bain
Special Publications of SEPM
... the earth s surface distribution patterns for these indicate the approxi mate latitude almost as effectively as the elevation of the sun and can...
1963
Pennsylvanian Subsurface Geology of Sutton and Schleicher Counties, Texas
Raymond W. Rall , Elizabeth P. Rall
AAPG Bulletin
... Dictionary where a reef is defined as "A chain of rocks or ridge of sand lying at or near the surface of the water." It would be difficult to prove how close...
1958
Genesis and Architecture of Incised Valley Fill Sequences: A Late Quaternary Example from the Colorado River, Gulf Coastal Plain of Texas: Chapter 10: Recent Applications of Siliciclastic Sequence Stratigraphy
Michael D. Blum
AAPG Special Volumes
... until the town of Eagle Lake, but then dips out of view. Likewise, the upper boundary remains at or near the surface until that point, but downstream...
1993
Early Cretaceous Aptian charcoal from Xinchang Petrified Wood National Geopark of Zhejiang Province, eastern South China
Feng-Qi Zhang, Han-Lin Chen, Geoffrey E. Batt, Zheng-Xiang Li, Shu-Feng Ya
PALAIOS
... brought a large amount of thermal energy capable of heating surface and near-surface ground water into the system, but also provided abundant volcanic ash...
2014
Diagenesis of Late Proterozoic Carbonates: The Beck Spring Dolomite of Eastern California
William G. Zempolich , Bruce H. Wilkinson, Kyger C Lohmann
Journal of Sedimentary Research (SEPM)
... ooids in the Saddle Peak Hills (Fig. 1) is important, as silicification has commonly been attributed to near-surface diagenetic processes...
1988
Dolomitization and Dolomite Neomorphism in the Back Reef Facies of the Bonneterre and Davis Formations (Cambrian), Southeastern Missouri
Jay M. Gregg, Kevin L. Shelton
Journal of Sedimentary Research (SEPM)
... of dolomites formed under near surface, low temperature conditions, although such textures do occur occasionally in dolomites formed at elevated temperatures...
1990
Sandstone Diagenesis in Mixed Siliciclastic-Carbonate Sequences: Quadrant and Tensleep Formations (Pennsylvanian), Northern Rocky Mountains
W. C. James
Journal of Sedimentary Research (SEPM)
...-cemented zones of Tensleep sandstones, not filled by early dolomite cement, suggests but does not prove a near-surface origin. While post-anhydrite...
1992
Systematic diagenetic changes in the grain-scale morphology and permeability of a quartz-cemented quartz arenite
Jennie E. Cook, Laurel B. Goodwin, David F. Boutt
AAPG Bulletin
... cements, which form between 80 and 120C, where more sources of silica are present, silcretes typically develop in the near surface at weathering...
2011
Comparative Rates of Weathering of Some Common Heavy Minerals
Lincoln Dryden, Clarissa Dryden
Journal of Sedimentary Research (SEPM)
...Comparative Rates of Weathering of Some Common Heavy Minerals Lincoln Dryden, Clarissa Dryden 1946 Vol. 16 No. 3. (December), When heavy minerals...
1946
TECTONIC HISTORY OF NORTH CENTRAL MONTANA
ANDREW G. ALPHA
Montana Geological Society
... sediments of a "decollement" type of orogeny. Beds near the surface were wrinkled as they slid eastward across unyielding lower strata...
1955
Alluvial fan and piedmont sedimentation in the Tynemouth Creek Formation (Lower Pennsylvanian) of Southern New Brunswick
A. G. Plint, H. W. van de Poll
Atlantic Geology
... fans and near-surface subsidence in Western Fresno County, California. United States Geological Survey Professional Paper, 437A, 71 p. FRIEND, P.R....
1982
Summary of Atlantic Coastal Plain
H. E. LeGrand
AAPG Bulletin
... sequence north of North Carolina, as well as the Cretaceous sequence north of Florida. Near-surface calcareous rocks of Eocene age extend from North Carolina...
1961
Sea-Floor Valleys of Gulf of California
Francis P. Shepard
AAPG Special Volumes
... of 30 feet. Below this depth the bottom is relatively flat with a slight hummocky topography indicating near-surface slumping down to depths of 70 feet...
1964
Road Logs, Field Trip to Big Bend Region, Trans-Pecos Texas
J. B. Stevens, M. S. Stevens
South Texas Geological Society Special Publications
... at the surface by reason of the resistance of the novaculite to weathering (and nearly everything else). 20.9 1.2 Horse Mountain (for which the Caballos...
1989
Trail Guide to the Mississippian Formations of Dog and Deadman Canyons
W. J. Meyers, L. C. Pray, D. A. Yurewicz
Dallas Geological Society
... of brown-weathering partially silicified dolomite are distinctive of the Valmont. Near the middle of the upper member sporadic silicified masses showing...
1975
Porphyry Weathering in a Desert Climate
Andrew E. Godfrey
Utah Geological Association
... the crystals standing in relief above the surface of the rock (Fig. 3). This type of weathering is conspicuous where the porphyry contains large (2 to 6 mm...
1980
An Outline of the Geology of the Bukit Ibam Orebody, Rompin, Pahang
Dennis Taylor
Geological Society of Malaysia (GSM)
... of pyrite and chalcopyrite along fault zones and the hangingwall and footwall contacts. Exposure to surface weathering during the present erosion cycle...
1971
The Geology of the Western Front Ranges South of Bow River, Alberta
J. L. Usher
CSPG Special Publications
...): Geology of Rocky Mountain Front Ranges near Bow River, Alberta; Bull., Amer. Assoc. Petrol. Geol., Vol. 33, No. 4, pp. 614–633. Deiss, C. F. (1940...
1959
Caribbean Reef Corals Montastrea annularis and Montastrea cavernosa--Long-Term Growth Data as Determined by Skeletal X-radiography: Reef Biota
Jon N. Weber , Eugene W. White
AAPG Special Volumes
... in deeper water than near the surface, but few quantitative data are available to support Table 2. Comparison of X-radiographically Determined Growth Rates...
1977