Types of gravel include: 1  Bank gravel: naturally deposited gravel intermixed with sand or clay found in and next to rivers and streams. 2  Bench gravel: a bed of gravel located on the side of a valley above the present stream bottom, indicating the former location of the stream bed when it was at a higher level.
1 is the sixth part of 6. 2 is two sixths, and also the third part, of 6. 3 is three sixths, and also half of 6. 4 is four sixths, and also two thirds, of 6. is the sixth part of 6. 2 is two sixths, and also the third part, of 6. 3 is three sixths, and also half of 6. 4 is four sixths, and also two thirds, of 6.
In the second inversion Play (helpÂ·info) , the bass is Gâthe 5th of the triadâwith the root and the 3rd above it (both again shifted an octave higher), forming a 4th and a 6th above the (inverted) bass of G, respectively.irst-inversion triads (6-3) are customarily abbreviated as 6, i.e. presence of the 3rd is understood. Second-inversion triads (6-4) are not abbreviated. Root-position seventh-chords, i.e. 7-5-3, are abbreviated as 7. First inversion seventh-chords 6-5-3, are abbreviated as 6-5.