# Late Paleocene paleoclimate recorded in fluid inclusion of halite in Subei basin, East China

## TL;DR

This study uses halite fluid inclusions to reconstruct Paleocene temperatures in eastern China, showing they can reliably track ancient climate conditions.

## Contribution

The study demonstrates that halite fluid inclusions are a reliable proxy for paleotemperature reconstruction in terrestrial settings.

## Key findings

- Homogenization temperatures from fluid inclusions ranged from 17.7°C to 52.3°C.
- The mean temperature of 34.1°C aligns with previous climatic proxy studies.
- Primary fluid inclusions in halite are confirmed as a robust tool for paleotemperature analysis.

## Abstract

Salt deposits are indicative of relatively extreme climate events. However, due to insufficient independent temperature proxies, paleotemperature records obtained from salt deposition are still lack. The Paleocene evaporite sequence deposited in the Hongze Depression of Subei Basin of eastern China provides an important terrestrial sediment record during this period. In this study we present total of 488 homogenization temperature (Th) data of halite fluid inclusions from drilling core with different stratigraphic depth after detailed petrological observation. The obtained Th ranged from 17.7 °C to 52.3 °C, with the mean Th value of 34.1 °C that in good agreement with the previous studies of climatic proxies. Our study shows that primary fluid inclusions of halite can serve as a robust tool to construct the ancient earth surface temperature.