Results 71 to 80 of about 34,079 (237)
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.Mordenite is a naturally occurring zeolite mineral that is the seventh most common zeolite mineral globally, forming at low temperatures (≥100°C) in hydrothermal systems. In New Zealand, extensive deposits of mordenite are commonly associated with areas of hydrothermal alteration, particularly in the Coromandel and Taupo Volcanic Zones.
Ayrton R. Hamilton +6 more
wiley +1 more source
A reconnaissance geochemical drainage survey of the Criffel-Dalbeattie granodiorite complex and its environs [PDF]
, 1977 Regional geochemical reconnaissance by stream sediments and panned concentrates was undertaken over an area of 850 km 2 of south-west Scotland. Rocks of Ordovician to Permian age are exposed within the area but the major part is occupied by the ...
Brown, M.J. +3 more
core
Anomalous supply of bioessential molybdenum in mid-Proterozoic surface environments [PDF]
, 2016 We are grateful to A. Sandison and W. Thayalon for skilled technical support, and Mike Porter and an anonymous reviewer, who helped to clarify the manuscript.Peer ...
Lindgren, Paula, Parnell, John
core +1 more source
The United States Magnetotelluric Array and the National Impedance Map
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract The United States Magnetotelluric Array (USMTArray) data set, collected in the years 2006–2024, consists of more than 1,700 long‐period magnetotelluric stations covering the entirety of the contiguous United States on a quasi‐regular 70 km grid.
Anna Kelbert +7 more
wiley +1 more source
Porphyry and Epithermal Au-Cu Systems of the Southern Caucasus and Northern Iran
Bulletin of the Mineral Research and ExplorationThis article presents tangible geological evidence for coexistence of porphyry copper and epithermal gold systems within single polygenic deposits and provides a paleothermophysical model for their origins.
Alexander G. Tvalchrelidze
doaj +1 more source
Homonymy; Aristotelian Definition and the Interpretations of Porphyry and Avicenna [PDF]
حکمت سینویAristotle, at the beginning of the Categories, provides a brief definition of homonym and synonym. Aristotelian and Platonic philosophers have engaged in interpreting, criticizing, and extending these Aristotelian definitions.
vahid khademzadeh
doaj +1 more source
Archaeometry, Volume 68, Issue 3, Page 395-408, June 2026.ABSTRACT This paper examines transport amphorae of Greek/Aegean types from the 7th–4th c. BCE imported to the Phoenician coastal settlement of Tell el‐Burak, Lebanon. We present a selection of 58 pieces analyzed by typological, chemical (NAA), and petrographic approaches.
Maximilian Rönnberg +3 more
wiley +1 more source
Frontiers in Earth ScienceThe Nenjiang-Heihe metallogenic belt of the northern Great Xing’an Range is renowned for Mesozoic epithermal Au deposits, however, apart from the Duobaoshan and Tongshan super-large porphyry deposits in the Paleozoic, no superlarge porphyry copper ...
Wang Zhuo +9 more
doaj +1 more source
Geosciences, 2018 A new porphyry Mo prospect has been discovered in the Aisymi-Leptokarya area, along the southern margin of the Byala Reka⁻Kechros metamorphic dome, south-eastern (SE) Rhodope metallogenic zone.
Evangelos Galanopoulos +7 more
doaj +1 more source
Moderate Fire Temperatures Affect the Structure of Clayey Oxisol Aggregates
Land Degradation &Development, Volume 37, Issue 8, Page 3169-3181, 15 May 2026.ABSTRACT Wildfires have become increasingly frequent and intense worldwide, raising concerns about their impacts on soil systems. However, the thermal responses of clay‐rich Oxisols, dominated by Fe and Al oxides, remain poorly understood. In this study, samples from the 0 to 5 cm layer of six Oxisols were subjected to controlled heating at ...
Yasmmin Tadeu Costa +5 more
wiley +1 more source