Chemical Composition of the Oils as an Indicator of Ecosystem Development: a Case Study of Tannu-Ola Ranges

The rise of the Tannu-Ola Range during the Pliocene (5.3–3.6 million years ago) marked a significant shift in substance migration mechanisms within the Uvs Nuur Basin, transitioning from dominant water migration to enhanced biogenic processes due to Cenozoic aridization and cooling. This geological event divided Tuva into two distinct basins—Central Tuvan and Uvs-Nuur—each with unique accumulation and transformation patterns. The study analyzed oil chemical composition as an indicator of ecosystem development, revealing that the Tannu-Ola Range, a block-structured horst-anticlinorium uplift, acted as a major climate barrier, altering regional hydrological and biogenic cycles. The research integrates geological, tectonic, and geochemical data to reconstruct past environmental dynamics in Central Asia.

Ondar, S. O., Ondar, E. E., Kuksina, D. K., Dorzhu, C. M., Ondar, D. S.,. (2019). Chemical Composition of the Oils as an Indicator of Ecosystem Development: a Case Study of Tannu-Ola Ranges. Ambient Science, 06Sp, 07 & 07h(1 & 1). https://doi.org/10.21276/ambi.2020.07.1.aa03