Results 41 to 50 of about 139,080 (365)

Predicting regional recovery from acidification; the MAGIC model applied to Scotland, England and Wales [PDF]

Hydrology and Earth System Sciences, 1998
A dynamic, process-based model of surface water acidification, MAGIC, has been applied to over a thousand sites across the UK. The model is calibrated to surface water samples collected during a survey for the Critical Loads programme, and utilises the ...
C. D. Evans, A. Jenkins, R. C. Helliwell, R. Ferrier   +3 more
doaj  

Anatomy and origin of authochthonous late Pleistocene forced regression deposits, east Coromandel inner shelf, New Zealand: implications for the development and definition of the regressive systems tract [PDF]

, 2004
High-resolution seismic reflection data from the east Coromandel coast, New Zealand, provide details of the sequence stratigraphy beneath an autochthonous, wave dominated inner shelf margin during the late Quaternary (0-140 ka). Since c.
Bard E., Bard E., Bond G., Bradshaw B. E., Bradshaw B. E., Browne G. H., Chappell J., Chiocci F. L., Dansgaard W., Davis R. A., Emery D., Hart B. S., Haywick D. W., Hernández‐Molina F. J., Hunt D., Hunt D., Kitamura A., Kolla V., Kolla V., Marks G. P., Marshall J. F., Martinson D. G., Mellere D., Mitchum R. M., Morton R. A., Naish T., Nummedal D., Plint A. G., Plint A. G., Plint A. G., Plint A. G., Pomar L., Posamentier H. W., Posamentier H. W., Posamentier H. W., Roy P. S., Roy P. S., Saul G., Schofield J. C., Shackleton N. J., Tesson M. R., Thom B. G., Thom B. G., Thom B. G., Thrasher G. P., Trincardi F., Vail P. R., Van Wagoner J. C., Van Wagoner J. C., Wright I. C., Wright I. C.   +50 more
core   +2 more sources

Insight into the Internal Structure of Biogenic, Synthetic and Geological Apatite by Electron Microscopy and X‐Ray Scattering

Advanced Functional Materials, EarlyView.
Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka, Oleg Prymak, Kateryna Loza, Matthias Epple   +3 more
wiley   +1 more source

Drone Geologic Mapping of an Active Sand and Gravel Quarry, Desoto County, Mississippi

Drones, 2019
Aerial drone photography of an active pit within a sand and gravel quarry in DeSoto County, Mississippi, was conducted to better understand the Upland Complex, which is a high-level Pliocene terrace of the Mississippi River.
Caroline Behrman, Roy Van Arsdale, Youngsang Kwon, Kerry Stockslager, Dave Leverett, David Lumsden   +5 more
doaj   +1 more source

A four stage evolution of the White Channel gravel: Implications for stratigraphy and palaeoclimates [PDF]

, 2014
Although the White Channel gravel (WCG) of the Klondike district, Yukon, contains gold placers which have been exploited for over a century, few sedimentological studies have been undertaken.
Chapman, Robert, Lowther, Robert, Peakall, Jeff, Pound, Matthew   +3 more
core  

Response and Recovery of the Comanche Carbonate Platform Surrounding Multiple Cretaceous Oceanic Anoxic Events, Northern Gulf of Mexico [PDF]

, 2015
The ubiquity of carbonate platforms throughout the Cretaceous Period is recognized as a product of high eustatic sea-level and a distinct climatic optimum induced by rapid sea-floor spreading and elevated levels of atmospheric carbon-dioxide.
Da-Gama, Rui O.B.P., Hull, David, Jeremiah, Jason, Kerans, Charles, Loucks, Robert G., Phelps, Ryan M.   +5 more
core   +1 more source

Colloidal Crack Sintering Lithography for Light‐Induced Patterning of Particle Assemblies

Advanced Functional Materials, EarlyView.
Colloidal crack sintering lithography (CCSL) is a microfabrication technique that uses light‐induced photothermal heating to trigger sintering and controlled cracking in polymer colloidal assemblies. Local structural changes generate microchannels and patterns, enabling direct writing of diverse topographic motifs.
Marius Schoettle, Ariane V. Mader, Willem L. Noorduin   +2 more
wiley   +1 more source

Lithofacies palaeogeography, depositional model and shale gas potential evaluation in the O3-S1 Wufeng-Longmaxi Formation in the Sichuan Basin, China

China Geology
: The black shales of Wufeng and Longmaxi Formation (Late Ordovician-Early Silurian period) in Sichuan Basin are the main strata for marine shale gas exploration, which have a yearly shale gas production of 228×108 m3 and cumulative shale gas production ...
Xiang-ying Ge, Chuan-long Mou, Xin Men, Qian Hou, Bin-song Zheng, Wei Liang   +5 more
doaj   +1 more source

Geology of the Tehachapi Mountains, California [PDF]

, 1954
The San Joaquin-Sacramento Valley, also known as the Great Valley of California, separates the Coast Ranges on the west from the Sierra Nevada on the east. The southern part of this major physiographic and structural province is about 50 miles in average
Buwalda, John P.
core  

Predicting the depositional environments and transportation mechanisms of sediments using granulometric parameters, bivariate and multivariate analyses [PDF]

, 2019
Grain size distribution and classes present in sedimentary rocks are responsive to the physical changes of the transporting media and the basin of deposition.
Ikhane, Phillips R., Oladipo, Olajide Vincent, Oyebolu, Olalekan Olayiwola   +2 more
core   +1 more source