Nakagawa and Tackley (2008) assumed a linear equation of state to relate their models' thermal, mineral, and chemical anomalies with seismic anomalies.
However, the general features of the particles are distinct from typical chondritic or IDP materials, in that they do not show any clear evidence of an extraterrestrial origin (e.g., isotopic anomalies and mineral compositions or textures).
Therefore, partial-melt minerals in the lower crust might be causing Anomaly (3) in this study.
A large-scale mineral deposit would probably produce detectable gravity and magnetic anomalies.
Therefore, the geological interpretation of gamma ray surveys for mineral exploration needs to consider the topography in order to reject false anomalies and retain the true anomalies associated with ore deposits.
This ion-exchange process is the basis of the "negative europium anomaly", the low europium content in many lanthanide minerals such as monazite, relative to the chondritic abundance.
This anomaly may be associated with the existence of partially-melted minerals.
A comprehensive study of mineral and thermal springs in the Eifel and Ardennes regions for geothermal anomalies was performed by Langguth and Plum (1984).
A geochemical exploration campaign aims at locating economic mineral deposits through recognition of unusual concentrations of chemical components, to be called as geochemical anomaly, in surficial materials such as rocks, soils, stream sediments, glacial till, water, plants, and air.
To explain the prominent conductive anomaly, integration of geophysical data favours the hypothesis of electrical conduction across well-connected mineral network in pre-Cretaceous sediments.
