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regolith

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Journal Article
Journal: Economic Geology
Published: 01 August 2020
Economic Geology (2020) 115 (5): 1097–1118.
...Martin Yan Hei Li; Mei-Fu Zhou; Anthony E. Williams-Jones Abstract Subtropical weathering of granitic catchments in South China has led to the formation of numerous giant regolith-hosted rare earth element (REE) deposits that currently account for more than 15% of global REE production and more...
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Journal Article
Journal: Geophysics
Published: 14 July 2020
Geophysics (2020) 85 (5): E153–E162.
... are found to enhance interpretation of the regolith geology, particularly the nature and distribution of transported materials that are not afforded by mapping conductivity/conductance alone. 20 6 2019 28 4 2020 2 5 2020 2020 Society of Exploration Geophysicists The original...
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Journal Article
Published: 01 January 2020
American Mineralogist (2020) 105 (1): 1–2.
.... These new results on regolith-hosted REE should stimulate further thinking and investigations regarding the about metal-phyllosilicate mineral sorption processes at the atom scale. Li and Zhou further noted that compounds forming stable complexes with halloysite would point to more environmentally friendly...
Journal Article
Published: 01 January 2020
American Mineralogist (2020) 105 (1): 92–108.
...Martin Yan Hei Li; Mei-Fu Zhou Abstract Rare earth elements (REEs) have become increasingly important to our modern society due to their strategical significance and numerous high technological applications. Regolith-hosted heavy rare earth element (HREE) deposits in South China are currently...
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Journal Article
Published: 01 September 2019
Reviews in Mineralogy and Geochemistry (2019) 85 (1): 349–380.
... [ 1 − ( Q K eq ) m ] n kmaher@stanford.edu asitchle@mines.edu Copyright © 2019 by the Mineralogical Society of America 2019 Mineralogical Society of America Chemical weathering, or the breakdown of rock to form regolith, occurs within...
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Journal Article
Published: 21 August 2019
Geochemistry: Exploration, Environment, Analysis (2020) 20 (3): 280–298.
...Paul A. Morris; Alex Christ; Edward J. Mikucki Abstract The <10, <4, <2.5 and <1 µm fractions of eight regolith samples have been extracted as aerosols, then analysed for more than 60 elements by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Precision...
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Journal Article
Published: 16 August 2019
Geochemistry: Exploration, Environment, Analysis (2020) 20 (1): 129–154.
... to the abundance of transported regolith dominated by quartz-rich sand. The archived samples were specifically selected soils (sheetwash or sandplain) with a component of Quaternary–Tertiary transported cover. Results at the orientation test sites (Telfer West, Tooting Bec and DeGrussa) were promising. Importantly...
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Journal Article
Published: 16 August 2019
Geochemistry: Exploration, Environment, Analysis (2020) 20 (1): 113–128.
... workflow called UltraFine+™. This workflow provides 40 elements, spectral mineralogy, particle-size distribution, pH, electrical conductivity (EC) and specific surface area, offering more quality data to improve mineral exploration using soil and regolith samples. Supplementary material: Spreadsheets...
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Journal Article
Journal: Elements
Published: 01 August 2019
Elements (2019) 15 (4): 259–265.
... of climate, can obscure any link. High rates of tectonic uplift, for example, translate into rapid physical erosion, which supplies reactive mineral surfaces for weathering. The converse is also true: slow uplift rates can lead to the development of thick regolith cover, effectively isolating bedrock...
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Journal Article
Journal: Elements
Published: 01 August 2019
Elements (2019) 15 (4): 286–287.
...: ryan.a.zeigler@nasa.gov Copyright © 2019 by the Mineralogical Society of America 2019 Mineralogical Society of America The readers has free access to the “free” material but MSA holds the rights From 1969 to 1972, the Apollo mission astronauts collected 382 kg of rock, regolith, and core...
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Journal Article
Journal: Elements
Published: 01 August 2019
Elements (2019) 15 (4): 247–252.
...Suzanne P. Anderson The vast diversity of landscapes found on Earth results from interplay between processes that break rock down, produce mobile regolith, and transport materials away. Mechanical weathering is fundamental to shaping landscapes, yet it is perhaps less understood at a mechanistic...
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Journal Article
Published: 12 July 2019
Geochemistry: Exploration, Environment, Analysis (2020) 20 (2): 217–232.
...E. C. Grunsky; P. de Caritat Abstract Multi-element geochemical surveys of rocks, soils, stream/lake/floodplain sediments and regolith are typically carried out at continental, regional and local scales. The chemistry of these materials is defined by their primary mineral assemblages...
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Journal Article
Published: 03 July 2019
Geochemistry: Exploration, Environment, Analysis (2020) 20 (1): 35–49.
...Paul Morris Abstract Regolith and vegetation (spinifex) chemistry from transects across the Stansmore Fault in the Ngururrpa area of northeastern Western Australia have been used to detect the presence of fault-controlled fluid, and whether the fluid has been in contact with concealed...
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Journal Article
Published: 24 May 2019
Geochemistry: Exploration, Environment, Analysis (2019) 19 (4): 474–486.
... through overlying gravels. Regolith mapping using high-resolution drone imagery and digital elevation modelling identified geomorphic markers of faulting which aided mapping the distribution of saline pockets. Saline pockets provide a unique opportunity to sample the direct expression of transported...
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Journal Article
Journal: Economic Geology
Published: 01 May 2019
Economic Geology (2019) 114 (3): 541–568.
...Martin Yan Hei Li; Mei-Fu Zhou; Anthony E. Williams-Jones Abstract The Zudong heavy rare earth element (HREE) deposit in South China is the largest regolith-hosted HREE deposit in the world, with a resource of ~17,600 tonnes (t) of rare earth oxides (REOs) at an average grade of ~0.1 wt % REOs...
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Journal Article
Journal: Elements
Published: 01 April 2019
Elements (2019) 15 (2): 103–106.
... of America chemical weathering CO 2 regolith modeling climate Rocks exposed at the Earth's surface undergo a range of biogeochemical reactions. Under the corrosive action of rain water and reactive gases, chemical weathering of minerals and amorphous materials, including organic matter...
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Journal Article
Published: 01 March 2019
European Journal of Mineralogy (2019) 31 (2): 335–352.
... showing banded and fibrous patterns ( i.e. colloforms with rows of tiny boxworks) to decipher their conditions of formation in intensively faulted and Al-poor regoliths of the New Caledonian ophiolite (Koniambo klippe). Phyllomanganates of the vein-infillings belong to a Ni-rich, 9.5 Å type (Ni-asbolane...
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Published: 01 January 2019
DOI: 10.1144/SP467.11
EISBN: 9781786203625
... Martian atmospheric temperatures and pressures. Three regolith simulants were used at several initial slope angles, summarized in Table 1 . Fig. 2. The Large Mars Planetary Environmental Simulations Chamber (centre), vacuum pump (bottom), liquid nitrogen supply (left) and CO 2 gas cooler (front...
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Series: Geological Society, London, Special Publications
Published: 01 January 2019
DOI: 10.1144/SP479.11
EISBN: 9781786204226
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Journal Article
Journal: GSA Bulletin
Published: 12 December 2018
GSA Bulletin (2019) 131 (5-6): 899–912.
..., stretching from subalpine conditions at ∼2200 m to subhumid conditions at ∼500 m. The samples consisted of exposed bedrock ( n = 33), soil-covered bedrock ( n = 2), and coarse mobile-regolith sediment samples ( n = 4; Fig. 1B ). Bedrock samples were collected from widespread surfaces that displayed...
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