Tidal bundle decreases as the tidal variation grows smaller, towards the neap tide again and the thinnest beds. The presence of tidal bundles depends on the presence of spring and neap tides, which can only occur in three-body gravitational systems (the Earth, the Sun and the Moon). Therefore, the earliest time from which tidal bundles can be identified gives a conclusive lower bound on the age of the Moon. Tidal bundle A tidal bundle is a sedimentary structure that forms in tidal areas as a result of spring and neap tides. A tidal bundle sequence can be seen as a variation in
Monuments relating to the Haymarket affair rally at Haymarket and free speech. The planned site was to include an international commemoration wall, sidewalk plaques, a cultural pylon, a seating area, and banners, but construction has not yet begun. Monuments relating to the Haymarket affair There are several monuments to commemorate the Haymarket affair. In 1889, a commemorative nine-foot (2.7 meter) bronze statue of a Chicago policeman by sculptor Johannes Gelert was erected in the middle of Haymarket Square with private funds raised by the Union League Club of Chicago. The statue was unveiled on May 30, 1889, by Frank Degan, the son of Officer Mathias Degan.