Tiny timekeepers witnessing high-rate exhumation processes.

ABSTRACT: Tectonic forces and surface erosion lead to the exhumation of rocks from the Earth's interior. Those rocks can be characterized by many variables including peak pressure and temperature, composition and exhumation duration. Among them, the duration of exhumation in different geological settings can vary by more than ten orders of magnitude (from hours to billion years). Constraining the duration is critical and often challenging in geological studies particularly for rapid magma ascent. Here, we show that the time information can be reconstructed using a simple combination of laser Raman spectroscopic data from mineral inclusions with mechanical solutions for viscous relaxation of the host. The application of our model to several representative geological settings yields best results for s

SUBMITTER: Zhong X 

PROVIDER: S-EPMC5797167 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature