A detailed rock density model of the Hong Kong territories

Albertini Nsiah Ababio; Robert Tenzer

doi:10.1016/j.geog.2023.05.006

A detailed rock density model of the Hong Kong territories

Albertini Nsiah Ababio, Robert Tenzer

Research output: Journal article publication › Journal article › Academic research › peer-review

2 Citations (Scopus)

Abstract

We used the geological map and published rock density measurements to compile the digital rock density model for the Hong Kong territories. We then estimated the average density for the whole territory. According to our result, the rock density values in Hong Kong vary from 2101 to 2681 kg·m⁻³. These density values are typically smaller than the average density of 2670 kg·m⁻³, often adopted to represent the average density of the upper continental crust in physical geodesy and gravimetric geophysics applications. This finding reflects that the geological configuration in Hong Kong is mainly formed by light volcanic formations and lava flows with overlying sedimentary deposits at many locations, while the percentage of heavier metamorphic rocks is very low (less than 1%). This product will improve the accuracy of a detailed geoid model and orthometric heights.

Original language	English
Pages (from-to)	75-81
Number of pages	7
Journal	Geodesy and Geodynamics
Volume	15
Issue number	1
DOIs	https://doi.org/10.1016/j.geog.2023.05.006
Publication status	Published - Jan 2024

Keywords

Density model
Gravimetric modeling
Hong Kong
Rock types

ASJC Scopus subject areas

Geophysics
Earth-Surface Processes
Computers in Earth Sciences

More information

10.1016/j.geog.2023.05.006

http://hdl.handle.net/10397/108518

Cite this

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A detailed rock density model of the Hong Kong territories

Abstract

Keywords

ASJC Scopus subject areas

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