Results 91 to 100 of about 233,985 (228)
Beach Gold and Heavy Mineral Concentrates on Tiwai Spit Gravel Strand Plain, Southland, New Zealand
The Holocene Tiwai Spit on Foveaux Strait is a 12 km by 2 km gravel‐dominated strand plain, ∼10 m above present sea level. Gravel clasts are dominated by well‐rounded quartz cobbles, pebbles and granules derived from Otago Schist 200 km to the north in evolving river drainage systems during late Cenozoic.
Marshall Palmer, Dave Craw
wiley +1 more source
Geochemistry of eolian dust from sediment core LL44-GPC-3
The large-diameter piston core LL44-GPC3 from the central North Pacific Ocean records continuous sedimentation of eolian dust since the Late Cretaceous. Two intervals resolved by Nd and Pb isotopic data relate to dust coming from America (prior to ~40 Ma)
Halliday, Alex N +5 more
core +1 more source
The U. S. National Aeronautics and Space Administration (NASA) has archived thousands of satellite images of density plumes in its online publishing outlet called ‘Earth Observatory’ since 1999.
G SHANMUGAM
doaj +1 more source
Cryptic Superfine Placer Gold Populations, Round Hill Mine, Southern New Zealand
Superfine (50–<1 µm) detrital gold and platinum group mineral (PGM) particles at the Round Hill mine near Foveaux Strait were locally derived (<20 km) from as‐yet undefined basement sources. This superfine component contrasts with the dominant coarser (typically >100 µm) gold and PGM particles at the mine that have been transported for >100 km in ...
Marshall Palmer, Dave Craw
wiley +1 more source
A uniform isotopic and chemical signature of dust exported from Patagonia: Rock sources and occurrence in southern environments [PDF]
Patagonia is considered to be the most important source of dust from South America that is deposited in surrounding areas, and we present here a systematic Sr and Nd isotopic study of sediment currently being exported.
Probst, Jean-Luc +3 more
core +1 more source
In recent years, northeastern Iran, particularly Khorasan Razavi province, has experienced wind erosion and dust storms, although large-scale studies are limited.
Mohammad Reza Rahdari +3 more
doaj +1 more source
Abstract Chlorophyll a (Chl a) is a key indicator of phytoplankton biomass and marine primary productivity, linking ocean ecosystem change to biogeochemical cycling and climate. Understanding the environmental controls on long‐term Chl a variability is therefore essential.
Won‐Jun Choi +5 more
wiley +1 more source
Charge Measurement of Dust Particles on Photovoltaic Module [PDF]
Photovoltaic (PV) systems are one of the most promising renewable energy sources in the world, and hence it is important to explore the factors that affect the working / operational efficiency of this source.
Kolhe, M. +9 more
core +1 more source
Enhanced Erosion Across a Transition From Continuous to Discontinuous Permafrost in Alaska
Abstract Permafrost degradation is expected to accelerate over the next century, with potentially important consequences for Arctic hillslope stability, channel erosion, sediment mobilization, water quality, and carbon release from previously frozen soils.
Emrah Özpolat +6 more
wiley +1 more source
Major factors influencing local dust radiative forcing [PDF]
In conclusion, it is shown in this paper that surface albedo variations over desert regions can have a significant influence on the solar and net radiative forcing of desert dust.
Otto, Sebastian +4 more
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