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Nicolas steno relative dating

Steno dissected the head and published his findings in 1667.

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His investigations and his subsequent conclusions on fossils and rock formation have led scholars to consider him one of the founders of modern stratigraphy and modern geology.As a clergyman, he was later appointed Vicar Apostolic of Nordic Missions and Titular Bishop of Titopolis by Pope Innocent XI.Steno played an active role in the Counter-Reformation in Northern Germany.) was a Danish scientist, a pioneer in both anatomy and geology who became a Catholic bishop in his later years.Steno was trained in the classical texts on science; however, by 1659 he seriously questioned accepted knowledge of the natural world.Like Vincenzo Viviani, Steno proposed a geometrical model of muscles to show that a contracting muscle changes its shape but not its volume.

During his stay in Amsterdam, Steno discovered a previously undescribed structure, the "ductus stenonianus" (the duct of the parotid salivary gland) in sheep, dog and rabbit heads.

He was venerated as a saint after his death and the Roman Catholic canonization process was begun in 1938. Nicolas Steno was born in Copenhagen on New Year's Day 1638 (Julian calendar), the son of a Lutheran goldsmith who worked regularly for King Christian IV of Denmark.

He became ill at age three, suffering from an unknown disease, and grew up in isolation during his childhood.

He published his geologic studies in De solido intra solidum naturaliter contento dissertationis prodromus, or Preliminary discourse to a dissertation on a solid body naturally contained within a solid in 1669. Steno was not the first to identify fossils as being from living organisms; his contemporaries Robert Hooke and John Ray, as well as Leonardo da Vinci a century earlier also argued that fossils were the remains of once-living organisms.

These principles were applied and extended in 1772 by Jean-Baptiste L. Steno's ideas still form the basis of stratigraphy and were key in the development of James Hutton's theory of infinitely repeating cycles of seabed deposition, uplifting, erosion, and submersion.

A dispute with Blasius over credit for the discovery arose, but Steno's name remained associated with this structure known today as the Stensen's duct.