Gustav Steinmann

Gustav Steinmann
Born	9 April 1856 (1856-04-09) Braunschweig, Duchy of Brunswick
Died	Bonn, Germany
Citizenship	Germany
Nationality	German
Fields	Geology, paleontology
Institutions	University of Strassburg University of Jena University of Freiburg University of Bonn
Alma mater	University of Munich
Known for	Steinmann's trinity, Geology of the Alps, Geology of the Andes

Johann Heinrich Conrad Gottfried Gustav Steinmann (9 April 1856 – 7 October 1929) was a German geologist and paleontologist. He performed various studies in the Ural Mountains, North America, South America, the Caucasus and the Alps. Steinmann had a large number of scientific publications. He made contributions to the Theory of Evolution and to the study of the structural geology and orogeny of the Andes.

In the Alps and Apennines Steinmann defined what later became known as "Steinmann Trinity" the occurrence of serpentine, pillow lava, and chert. The recognition of Steinmann Trinity served years later to build up the theory around seafloor spreading and plate tectonics.

South America

Steinmann redefined the Navidad Formation in 1895, then called Piso Navidad, described by Charles Darwin by giving it a Lower Tertiary age and spanning much of south-central Chile. In 1934 Juan Brüggen separated Piso Concepción from Steinmanns Piso Navidad after showing there was a discordance between them.

In Peru Steinmann studied the geology of Cerro de Pasco.