Mafic Archean continental crust prohibited exhumation of orogenic UHP eclogite

• Main Authors: Palin, Richard.M., Moore, James Daniel Paul, Zhang, Zeming, Huang, Guangyu, Wade, Jon, Dyck, Brendan
• Other Authors: Earth Observatory of Singapore
• Format: Article
• Language: English
• Published: 2021
• Subjects: Science::Geology; Archean; Eclogite
• Online Access: https://hdl.handle.net/10356/153534
• Institution: Nanyang Technological University

The absence of ultrahigh pressure (UHP) orogenic eclogite in the geological record older than c. 0.6 Ga is problematic for evidence of subduction having begun on Earth during the Archean (4.0–2.5 Ga). Many eclogites in Phanerozoic and Proterozoic terranes occur as mafic boudins encased within low-de...