The name "Vaalbara" is given to Earth's theorized first supercontinent. According to radiometric data of the encompassing cratons that comprised Vaalbara, it is known to have existed 3.3 billion years ago (3.3 Ga) and possibly even as far back as 3.6 Ga. Evidence includes geochronological and palaeomagnetic studies between the two Archaean cratons (protocontinents) called the Kaapvaal craton (the Kaapvaal province of South Africa) and the Pilbara craton (the Pilbara province of Western Australia).
Further evidence is the structural sequence similarities of the greenstone belts and gneiss belts of these two cratons. These same Archaean greenstone belts are now spread out across the margins of the Superior craton of Canada and are also spread out across the cratons of the former Gondwana and Laurasia continents. The subsequent drift paths of the Kaapvaal and Pilbara cratons after 2.8 Ga gives further evidence that they were once connected.
It is not certain when Vaalbara began to break up, but geochronological and palaeomagnetic evidence show that the two cratons had a rotational 30 degree latitudinal separation at 2.78 to 2.77 Ga, implying that they were no longer contiguous after ~2.8 Ga.

See also

Supercontinent
Kaapvaal craton
Pilbara craton
Gondwana
Laurasia

Bill Doggett (February 16, 1916 – November 13, 1996) was an American jazz and rhythm and blues pianist and organist.
William Ballard Doggett was born in Philadelphia, Pennsylvania. His mother, a church pianist, introduced him to music when he was 9 years old. By the time he was 15, he had joined a Philadelphia area combo, playing local theaters and clubs while attending high school.
He later sold his band to Lucky Millinder, and worked during the 1930s and early 1940s for both Millinder and arranger Jimmy Mundy. In 1942 he was hired as The Ink Spots' pianist and arranger.
In 1949, he replaced Wild Bill Davis in Louis Jordan's Tympany Five. It was there that he first achieved success playing the Hammond organ and he is also reputed to have written one of Jordan's biggest hits, "Saturday Night Fish Fry", for which Jordan claimed the writing credit.
In 1951, he organized his own trio and began recording for King Records. His best known recording is "Honky Tonk," a rhythm and blues hit of 1956 which sold four million copies. He won the Cash Box award for best rhythm and blues performer in 1957, 1958, and 1959. He also arranged for many bandleaders and performers, including Louis Armstrong, Count Basie, Ella Fitzgerald, and Lionel Hampton. He continued to play and arrange until he died of a heart attack in New York City.
As a jazz player Doggett started in swing music and later played soul jazz, a field in which rhythm and blues organists were highly sought after.