Geology

Geology calculators for seismic magnitude, rock density, Darcy flow, well drawdown, sediment transport, and ore grade.

Matches are ranked by relevance. Use CtrlK anytime to search the full site.

Calculate groundwater flow rate using Darcy's Law from hydraulic conductivity, hydraulic gradient, and cross-sectional area.

Look up the geologic period, era, and eon for any age in millions of years ago (Ma) using the international geologic time scale.

Identify likely minerals based on hardness, luster, cleavage, and color group using a scoring system against common mineral profiles.

Calculate recoverable metal tonnage from total ore tonnage, grade percentage, recovery rate, and cutoff grade.

Calculate tectonic plate movement rate in cm/year from total displacement distance and time span in millions of years.

Calculate bulk density, grain density, and porosity from dry, saturated, and submerged mass measurements.

Calculate bedload transport rate, shear stress, and transport mode from stream velocity, grain size, water depth, and slope.

Convert seismic magnitude to energy released (Joules, TNT equivalent) and Modified Mercalli Intensity (MMI).

Calculate apparent dip from true dip and the angle between the strike direction and cross-section line.

Calculate well drawdown using the Theis/Cooper-Jacob equation from pump rate, transmissivity, storage coefficient, time, and distance.