Definition of orthogeosyncline in English:

orthogeosyncline

Pronunciation /ˌɔːθə(ʊ)dʒiːə(ʊ)ˈsɪŋklʌɪn/

noun

rare Geology
  • A linear geosyncline situated between a continental and an oceanic craton, typically comprising a miogeosyncline and an adjacent eugeosyncline.

    With the rise of the plate-tectonic model from the 1960s, the concept of geosynclines has been regarded as obsolete by most geologists.

Origin

1930s; earliest use found in Bulletin of the American Association of Petroleum Geologists. From ortho- + geosyncline, after German Orthogeosynklinale.