Richard Dixon Oldham is credited with discovering the two main types of body waves -- elastic shock waves that travel through the Earth during earthquakes. The first of these waves is called a P , or Primary wave, because, due to its rate of...

1858-1936 Irish geologist and seismologist who established the existence of Earth's core. Based on his landmark survey of the 1897 Assam earthquake, Oldham identified three types of seismic waves—primary (P-waves), secondary (S-waves),...

Richard Dixon Oldham (July 31, 1858 – July 15, 1936) was an Irish geologist who, in 1906, argued that the Earth must have a molten interior as S waves were not able to travel as quickly through liquids nor through the Earth's interior as through...

Richard C. Dixon, 80, of 21 Chester St., Lancaster, passed away on Thursday morning at his home surrounded by his loving family. Born in Columbia, Pa., he was the son of the late Abram and Ida Viola Carey Dixon. He and his wife, Helen...

ROBERT RATISH, STAFF WRITER The Record (Bergen County, NJ) 10-02-2003 On Oldham Pond -- WPU's new alumni center doubles as ecology lab By ROBERT RATISH, STAFF WRITER Date: 10-02-2003, Thursday Section: LOCAL Edtion: Two Star P A group of students had traveled...