RESISTANCE TO EROSION

FACTORS THAT AFFECT RESISTANCE TO EROSION OF GEOLOGIC MATERIALS

HARDNESS: Hardness will affect the resistance of individual mineral grains in geologic materials to being worn away by rubbing and scratching.		Press the button to determine the hardness of NYC minerals.
		Press the button to calculate a 'hardness value' for NYC rocks and sediments.

INERTNESS: Inertness measures the resistance of individual mineral grains in geologic materials to being chemically altered or dissolved.		Press the button to determine the inertness of NYC minerals.
		Press the button to calculate an 'Inertness Value' for NYC rocks and sediments.

COHESION: Cohesion measures how strongly the particles that compose geologic materials are joined together.		Press the button to determine the cohesion of NYC rocks and sediments.
		Press the button to calculate a 'cohesion value' for NYC rocks and sediments.