Results 91 to 100 of about 53,501 (300)

Mineralization and hydrothermal alteration of the Tajroud vein system, south of Neyshabour

Journal of Economic Geology, 2013
The Tajroud vein system is located 190 km southwest of Mashhad, and in the southern part of the Sabzevar zone. The vein host rocks consist of Eocene intermediate to silicic volcanic rocks.
Mohsen Alikhani Banghani, Gholam Hosein Shamanian, Mohammad Jafari Zanglanlou   +2 more
doaj  

Mineralogical Mapping in the Cuprite Mining District, Nevada [PDF]

, 1985
The airborne imaging spectrometer (AIS) has provided for the first time, the possibility to map mineralogical constituents in the Earth's surface and thus has enormously increased the value of remote-sensing data as a tool in the solution of geologic ...
Goetz, A. F. H., Srivastava, V.
core   +1 more source

Mineralogy and distribution of critical elements in the Sn–W–Pb–Ag–Zn Huanuni deposit, Bolivia [PDF]

, 2019
The polymetallic Huanuni deposit, a world-class tin deposit, is part of the Bolivian tin belt. As a likely case for a “mesothermal” or transitional deposit between epithermal and porphyry Sn types (or shallow porphyry Sn), it represents a case that ...
Alfonso, Pura, Arc, Artiaga, David, Cacho, Andreu, Campeny, Marc, Camprubí, Antoni, Castillo-Oliver, Montgarri, Consorci del Museu de Ciències Naturals de Barcelona, Martínez, Álvaro, Melgarejo, Joan Carles, Tauler, Esperança, Torres, Belén, Torró, Lisard   +12 more
core   +2 more sources

Physicochemical Reinforcement Unlocks Sterilization‐Stable Anisotropic Hydrogels for Cell‐Compatible Mock Arteries

Advanced Healthcare Materials, EarlyView.
ABSTRACT In vitro arterial models offer ethical and robust alternatives for vascular research but require cytocompatible materials that replicate physiological mechanics. Poly(vinyl alcohol) (PVA) hydrogels produced by directional freezing and salting‐out (PVA DFSO) are anisotropic yet lack stability for cell culture. Herein, methacrylated PVA (PVA‐MA)
Javiera Sanhueza Ortega, Kirthen Shanmuganathan, Laura Poole‐Warren, Susann Beier, Ulises Aregueta Robles   +4 more
wiley   +1 more source

Evidence for an impact-induced biosphere from the δ34S signature of sulphides in the Rochechouart impact structure, France [PDF]

, 2017
The highly eroded 23 km diameter Rochechouart impact structure, France, has extensive evidence for post-impact hydrothermal alteration and sulphide mineralization.
Boyce, A.J., Lambert, P., Lee, M.R., Lindgren, P., Simpson, S.L.   +4 more
core   +1 more source

Crystal Growth Engineering for Dendrite‐Free Zinc Metal Plating

Advanced Materials, EarlyView.
This research employed the rare‐earth ion dysprosium (Dy) to modulate aqueous zinc (Zn) metal plating. Integrated multiscale experiments and computational modeling unveiled the preferential adsorption of Dy on specific crystal facets, which activated screw dislocation‐driven Zn growth.
Guifang Zeng, Sharona Horta, Qing Sun, Malik Dilshad Khan, Maria Ibáñez, Yuhang Han, Shang Wang, Longqiu Li, Lijie Ci, Yanhong Tian, Andreu Cabot   +10 more
wiley   +1 more source

Episodic hydrothermal alteration on Middle Permian carbonate reservoirs and its geological significance in southwestern Sichuan Basin, SW China

Petroleum Exploration and Development
To analyze the episodic alteration of Middle Permian carbonate reservoirs by complex hydrothermal fluid in southwestern Sichuan Basin, petrology, geochemistry, fluid inclusion and U-Pb dating researches are conducted.
Mingyou FENG, Junxin SHANG, Anjiang SHEN, Long WEN, Xingzhi WANG, Liang XU, Feng LIANG, Xiaohong LIU   +7 more
doaj   +1 more source

The effect of hydrothermal alteration on the seismic structure of the upper oceanic crust: Evidence from Holes 504B and 1256D

Geochemistry, Geophysics, Geosystems, 2011
It has long been argued but never demonstrated that alteration “fronts” should be recognizable features of the seismic structure of the oceanic crust. The abrupt transition from crust affected by low‐temperature hydrous alteration to crust affected by ...
R. L. Carlson
doaj   +1 more source

Airborne infrared mineral mapping survey of Marysvale, Utah [PDF]

Infrared spectroradiometer survey results from flights over the Marysvale, Utah district show that hydrothermal alteration mineralogy can be mapped using very rapid and effective airborne techniques.
Chang, S. H., Collins, W.
core   +1 more source

Oceanic crust: Age of hydrothermal alteration

Geophysical Research Letters, 1978
Times of vein mineral deposition in the ocean crust have been determined both by Rb‐Sr isochron ages of vein smectites and by comparison of 87Sr/86Sr ratios of vein calcites with the known variations of seawater 87Sr/86Sr ratio with time. Results from drill sites 105, 332B and 418A, Atlantic Ocean, which have basement formation ages of 155 m.y., 3.5 m ...
S. R. Hart, H. Staudigel
openaire   +1 more source