Geology of the Macao Special Administrative Region (China)

Journal of Maps

Maria Luísa Ribeiro¹  João Mata²  Ágata Alveirinho Dias³  Ricardo Borges³  Pedro Costa³  Pedro Quelhas³ 

[1] Laboratório Nacional de Energia e Geologia (LNEG);Universidade de Lisboa;University of Saint Joseph;

关键词: macao (south china);    granites;    geological map;    magmatic rocks;    jurassic;    mesozoic;   

DOI  :  10.1080/17445647.2021.1906340

来源: DOAJ

【 摘 要 】

A 1:12,000 geological map of the Macao Special Administrative Region has been produced through detailed field work supported by petrographic, mineralogical, geochronological and geochemical data obtained in previous studies. This map aims to represent a reliable tool to understand the geological evolution of the region and for management of the territory. The geology of Macao is dominated by two groups of Jurassic granitic rocks belonging to an intrusive suite located along the coast of Southeast China: Macao Group I (MGI: 164.5 ± 0.6 to 162.9 ± 0.7 Ma) and Macao Group II (MGII: 156.6 ± 0.2 to 155.5 ± 0.8 Ma), including the associated microgranite, aplite and pegmatite dikes and quartz veins. Remnants of the metasedimentary wall-rock are present as Devonian xenoliths enclosed within the granites. Younger Jurassic to Cretaceous andesite to dacite dikes (150.6 ± 0.6 to <120 Ma) intrude the granitic rocks. Additionally, Quaternary sedimentary deposits cover the older lithologies.

【 授权许可】

Unknown