Results 51 to 60 of about 875 (184)

Geochemical and Documentary Topography of a Medieval Silver Valley: Detection of Workshops and Identification of Their Function

Archaeological Prospection, Volume 32, Issue 2, Page 345-374, April/June 2025.
ABSTRACT This paper presents the interdisciplinary investigation (archaeology, geochemistry, history) of a medieval silver and lead production site located in southern France, in the Minier valley (Occitanie, Aveyron, Le‐Viala‐du‐Tarn). In order to identify the production sites, in situ geochemical surveys were carried out using a portable X‐ray ...
Céline Tomczyk, Alain Bernat, Jérôme Belmon, Nicolas Minvielle Larousse   +3 more
wiley   +1 more source

OSL Characteristics of Sandstone-type Uranium Deposits Soil and Optimization of Measurement Process

Yuanzineng kexue jishu
Sandstone-type uranium deposits are recognized as the main type for uranium exploration and mining in China, owing to their large reserves and ease of extraction. However, some of the sandstone-type uranium deposits are covered by thick overburden layers
ZHENG Song1, 2, WANG Meng1, 2, , GU Yi1, 2, WANG Yong3, ZHANG Qingxian1, 2, GE Liangquan1, 2, WANG Zewei1, 2
doaj   +1 more source

Chemical Compositions of Fluid Inclusions in the Jalal –Abad iron oxide deposit, North West of Zarand, Using LA-ICP-MS Microanalysis

Journal of Economic Geology, 2017
Introduction The Poshtebadam Bafq Zarand district in central Iran is a world class iron oxide province. This region contains over two billion tons of iron ore reserves within more than 34 major magnetic anomalies and deposits in an area of 7,500 km2 ...
Behrouz Karimi Shahraki, Behzad Mehrabi
doaj   +1 more source

The effect of temperature-dependent solubility on the onset of thermosolutal convection in a horizontal porous layer

, 2007
We consider the onset of thermosolutal (double-diffusive) convection of a binary fluid in a horizontal porous layer subject to fixed temperatures and chemical equilibrium on the bounding surfaces, in the case when the solubility of the dissolved ...
Richardson, C. N., Pritchard, D., Pritchard, David, Richardson, Chris N.   +3 more
core   +1 more source

A Review of Analytical Techniques to Characterise Nanomaterial Associations with Minerals, Organic Matter and Organisms

Geostandards and Geoanalytical Research, Volume 49, Issue 1, Page 133-159, March 2025.
Key Points Overview of associations between nanomaterials and larger minerals, organic matter and organisms in the environment and ore deposits. Review of analytical techniques to study mineralogically and chemically complex nanomaterial associations. Provides perspectives of new research endeavours related to nanomaterial associations.
Michael Schindler, Mozhgan Akbari Alavijeh, Marcos L.S. Oliveira, Luis F.O. Silva   +3 more
wiley   +1 more source

Prospects for comprehensive utilization of symbiotic/associated oil and gas resources in exploration area of Shengli Oilfield

Youqi dizhi yu caishoulu
Various symbiotic/associated oil and gas resources have been found in the exploration area of Shengli Oilfield， and some of them serve as strategic resources for guaranteeing the security of national defense， agriculture， high-tech， and other industries，
LIU Junmin, ZHANG Guanlong, ZHAO Leqiang, WU Chunwen, XIAO Yongjun, ZHANG Qiushi, LI Xiaojun   +6 more
doaj   +1 more source

Leaf Accumulation Capacity of Herbaceous Plants Growing on Fields Contaminated With Anthropogenically Induced Potentially Toxic Elements Under Natural Soil Conditions

Land Degradation &Development, Volume 36, Issue 2, Page 630-642, 30 January 2025.
ABSTRACT Estimation and knowledge of potentially toxic elements (PTEs) in soils and herbaceous plants are vital for ecotoxicological reasons. This study explored PTE accumulation in the aerial organ (leaf) of herbaceous plants in PTE‐contaminated soils in a linear transect of three localities close to the Litavka River in Pribram, Czech Republic.
Michael O. Asare, Jiřina Száková, Jana Najmanová, Pavel Tlustoš   +3 more
wiley   +1 more source

National uranium resource evaluation. Geology and recognition criteria for sandstone uranium deposits of the salt wash type, Colorado Plateau Province. Final report [PDF]

, 1981
The uranium-vanadium deposits of the Salt Wash Member of the Morrison Formation in the Colorado Plateau are similar to sandstone uranium deposits elsewhere in the USA.
Thamm, J. K., Kovschak, A. A. Jr., Adams, S. S.   +2 more
core  

Evidence for the Neoproterozoic Rifting of Rodinia in the Rocky Mountain Front Range

Tectonics, Volume 44, Issue 1, January 2025.
Abstract Recent advances in low‐temperature thermochronology enable the recovery of deep‐time thermal histories from Precambrian crystalline rocks shaped by multiple tectonic events, offering unprecedented opportunities to test tectonic hypotheses and links to significant biologic and climatic episodes. In particular, the late Neoproterozoic breakup of
Kendra E. Murray, Nathan A. Niemi, Marin K. Clark   +2 more
wiley   +1 more source

The isotope geochemistry of uranium: Igneous petrology, ore deposits, and groundwater contamination

, 2010
This study applies high precision 238U/235U measurement techniques two three geologic settings: basalt differentiation, uranium ore genesis, and the remediation of a uranium-contaminated groundwater system. In the latter two cases, 238U/235U is used as a
Bopp, Charles J., IV
core