By
C.S. Hutchison, University of Malaya, Kuala Lumpur, Malaysia
Description
The book is a comprehensive compilation of all aspects of the geology of Northwest Borneo (Sarawak, Brunei and Sabah) and the contiguous
South China and Sulu Seas. The sedimentary formations are described, their palaeontology tabulated and ages discussed. Stratigraphic
charts illustrate their relationships across the whole region. Detailed geological maps of selected areas are accompanied by cross sections
based on outcrop patterns and drilling and seismic data offshore. Palaeocurrent maps are presented and the palaeogeography for different
ages described and sedimentary provenance discussed.
Descriptions of the ophiolite sequences, volcanic and plutonic rocks are
accompanied by tables of selected chemical analyses and geochemical plots and their tectonic significance discussed. All radiometric
data are tabulated and discussed.
Regional structures and the predominantly Tertiary tectonics are described. In Sarawak the mountains
are constructed of Upper Cretaceous to Lower Eocene greenschist facies shaly turbiditic Rajang Group, uplifted before the end of the
Eocene. In Sabah the Western Cordillera is constructed of Eocene to Lower Miocene sandy turbidite uplifted in the Late Miocene and Pliocene.
Miocene intrusion of Mount Kinabalu and uplift of the Cordillera is related to collision at the Northwest Borneo Trough. Gold, antimony,
mercury and copper deposits are described and the tectonic setting of oil and gas deposits discussed.
Audience:
Geologists, petrologists, economic geologists, geochemists, volcanologists, geophysicists
