Past sea level has varied by somewhat more than a hundred metres. This is primarily due to the growth and decay of ice sheets (mostly in the northern hemisphere) with water evaporated from the sea. The Mediterranean Basin's gradual growth as the Neotethys basin, begun in the Jurassic, did not suddenly affect ocean levels. While the Mediterranean was forming during the past 100 million years, the average ocean level was generally 200 metres above current levels. However, the largest known example of marine flooding was when the Atlantic breached the Strait of Gibraltar at the end of the Messinian Salinity Crisis about 5.2
Centigrade 232 full recitation of the "Centigrade 232" collection. Other releases comprised recitations of the unpublished "Earth Ritual" poems collection and two music tapes, "Blueprints from the Cellar" Volumes 1 and 2, which contained home demos of songs, some of which would be released in completed form on the albums "Freq" and "Test Tube Conceived". Calvert's "Centigrade 232" tape recitation was first used with music on the second Spirits Burning album "Reflections in a Radio Shower", released in 2001. Don Falcone took the original recording of Calvert reading his poem "Centigrade 232" and integrated it into the track "Drive-By Poetry". Lines from