Results 81 to 90 of about 97,579 (354)

Contributions to the geochronology and geological evolution of the Central African Copperbelt [PDF]

, 2006
PhD - ScienceThis thesis presents the results of a broad geochronological investigation into the nature and evolution of the Central African Copperbelt, host of world class Cu-Co deposits in Zambia and the Democratic Republic of Congo.
Rainaud, Christine Claire Laurence
core  

U–Pb SHRIMP detrital zircon ages from the Neoproterozoic Difunta Correa Metasedimentary Sequence (Western Sierras Pampeanas, Argentina): Provenance and paleogeographic implications

, 2015
The central and eastern parts of the Sierra de Pie de Palo (Western Sierras Pampeanas, Argentina) are formed by a Mesoproterozoic basement and a Neoproterozoic sedimentary cover.
C. Ramacciotti, E. Baldo, C. Casquet
semanticscholar   +1 more source

Excipient Emulsion–Based Delivery Systems for Enhancing Carotenoid Bioavailability: Advances in Formulation and Gastrointestinal Fate

AgriFood: Journal of Agricultural Products for Food, EarlyView.
Excipient emulsion systems improve carotenoid solubilization, protect against degradation, and enhance gastrointestinal absorption through optimized formulation and digestion behavior. ABSTRACT Carotenoids are bioactive compounds that contribute to human health through antioxidant, provitamin A, and disease‐preventive effects.
Tugce Ceyhan, Elifsu Nemli, Esra Capanoglu, Merve Tomas   +3 more
wiley   +1 more source

Geochronological systematics of the Huayna Potosí, Zongo and Taquesi plutons, Cordillera Real of Bolivia, by the K/Ar, Rb/Sr and U/Pb methods

Brazilian Journal of Geology
The Huayna Potosi, Zongo and Taquesi are Triassic plutons located at the core of the Real Cordillera of Bolivia. In this paper, several Rb-Sr and K-Ar ages obtained in the past at the São Paulo Geochronology Laboratory, yet unpublished, will be presented,
Umberto Giuseppe Cordani, Alvaro Rodrigo Iriarte, Kei Sato   +2 more
doaj   +1 more source

U-Th-Pb Dating of Monazite by LA-ICP-MS Using Ablation Spot Sizes of 16 μm and 10 μm

Yankuang ceshi, 2016
Monazite is a common geological chronometer and has complex textures and different chemical domains. Meaningful U-Th-Pb ages for different domains can be obtained only using a suitably small laser beam spot.
WANG Shuang-shuang, HAN Yan-bing, LI Yan-guang, WEI Xiao-yan, JIN Meng-qi, CHENG Xiu-hua   +5 more
doaj   +1 more source

Extensional faulting on Tinos island, Aegean sea, Greece: How many detachments? [PDF]

, 2007
Zircon and apatite fission track (ZFT and AFT) and (U-Th)/He, 40Ar/39Ar hornblende, and U-Pb zircon ages from the granites of Tinos Island in the Aegean Sea, Greece, suggest, together with published ZFT data, that there are three extensional detachments ...
Altherr, Andrew Carter, Avigad, Avigad, Ballard, Barbarand, Black, Boven, Brichau, Brichau, Bröcker, Bröcker, Clauer, Coulson, Dahl, Daniel Stockli, Donelick, Dürr, Esser, Farley, Faure, Forster, Foster, Fytikas, Galbraith, Gessner, Godfriaux, Green, Hejl, Hourigan, House, Hurford, Hurford, John, Kelley, Ketcham, Ketcham, Kumerics, Lee, Lister, Maluski, Maurice Brunel, Mehl, Melidonis, Miller, Patriat, Patrick Monié, Patzak, Pearce, Rahn, Regenauer-Lieb, Reiners, Ring, Ring, Ring, Ring, Ring, Ring, Ring, Ring, Robert Bolhar, Robertson, Samson, Schmädicke, Shaked, Stern, Stockli, Stockli, Stéphanie Brichau, Stöckhert, Tagami, Thomson, Tomaschek, Uwe Ring, Villa, Watson, Weidmann, Wijbrans, York, Zeffren   +79 more
core   +3 more sources

Loch Burn Formation, Fiordland, New Zealand: SHRIMP U‐Pb ages, geochemistry and provenance [PDF]

New Zealand Journal of Geology and Geophysics, 2007
Abstract New SHRIMP U‐Pb ages and geochemical data have been obtained for the volcano‐sedimentary Loch Burn Formation (LBF). A rhyolitic clast from the tops of the Stuart Mountains gave a SHRIMP age of 150.3 ± 1.9 Ma, and a very fine sandstone from the same area was dominated by 147.9 ±2.1 Ma zircons.
Ewing, Tanya, Weaver, Steve, Bradshaw, John D, Turnbull, I.M., Ireland, Trevor   +4 more
openaire   +2 more sources

Assessing the Impact of Promotions on Consumer Purchasing Behavior During Crises

Agribusiness, EarlyView.
ABSTRACT Understanding how households modify their food expenditure decisions during times of crisis is essential because consumer purchasing behavior frequently changes during these times. This study looks at these behavioral shifts during the COVID‐19 pandemic, concentrating on how price sensitivity and response to sales promotions changed over the ...
Wafa Mehaba, José María Gil
wiley   +1 more source

Toward Environmentally Friendly Hydrogel‐Based Flexible Intelligent Sensor Systems

Advanced Intelligent Discovery, EarlyView.
This review summarizes environmentally and biologically friendly hydrogel‐based flexible sensor systems focusing on physical, chemical, and physiological sensors. Furthermore, device concepts moving forward for the practical application are discussed about wireless integration, the interface between hydrogel and dry electronics, automatic data analysis
Sudipta Kumar Sarkar, Kuniharu Takei
wiley   +1 more source

Shrimp U-Pb age and Sr-Nd isotopes of the Morro do Baú mafic intrusion: implications for the evolution of the Arenópolis volcano-sedimentary sequence, Goiás Magmatic Arc

Anais da Academia Brasileira de Ciências, 2003
The Arenópolis volcano-sedimentary sequence is located in the southern part of the Goiás Magmatic Arc and includes a ca. 900 Ma calc-alkaline arc sequence made of volcanic rocks ranging in composition from basalts to rhyolites, metamorphosed under ...
Márcio M. Pimentel, Maria Helena B. M. Hollanda, Richard Armstrong   +2 more
doaj   +1 more source