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 Granulites
and Lower Continental Crust in North China
Archaean Craton
In English
By Zhang Mingguo
Published in 1996
Page: 239 pages
Size: 175x245mm, hardback
Price: $38
Their main conclusions are as follow:
1. The concerning area is divided into two Archaean continental blocks:
Huaian block and Hengshan block. Both of them have a double-layer structure
consisting of Archaean high-grade basements and late Archaean to early
Proterozoic metamorphic covers. However, they have different features
in rock association, geological structure, metamorphism, geochemical composition
and isotopic ages.
2. Between Huaian block and Hengshan block, there develops the Sanggan
structure zone. It is a complicated thrust belt, and is characterized
by having plenty of small scale shear zones, lenses of high-pressure basic
granulite, retrograde eclogite and ultra-mafic rock, and small granite
intrusions. It is by these characteristics that the sanggan structure
belt is distinguished from the two continental blocks in both sides of
it. The high-pressure granulite formed at late Archaean.
3. The matching model of the two Archaean continental blocks has been
fully discussed according to the point of view of the plate tectonic model.
4. The Archaean lower continental crust represented by the high-pressure
granulite is discussed and then a complete continental lower crust section
from high-pressure granulite to amphibolite facies in the Archaean cratonic
area is set up.
Contents
1. Tectonic Framework of the North China Craton
(1) Introduction and Review
(2) Archaean Tectonic Division
2. High-Pressure Granulite, Retrograde Eclogite and Granite Early Precambrian
Sanggan Structure Belt
(1) Introduction
(2) Geological Characteristics
(3) Rocks
(4) Character and Structure Significance
3. Huaian Massif and Hengshan Massif
(1) Huaian Massif
(2) Hengshan Massif
4. Geochronology and Important Geological Events
(1) Khondalite Serics
(2) Huaian Complex
(3) High-Pressure Granulite
(4) Collision Granite
(5) Tectonic Significance of Isotopic Age
5. Archaean Granites and Cratonization
(1) Early Precambrian Granites and Continental Growth
(2) Granites of the Sanggan Structure Belt
(3) S-type Garnet Granite in Khondalite
6. An Oblique Cross Section of Archaean Continental Crust
(1) General Principles to Establish
(2) Cross Sections of Archaean Lower Continental Crust
(3) Several Problems
7. Late Archaean Tectonic Evolution
(1) Tectonic Division of High-Grade Metamorphic Terrains
(2) Structural Framework and Major Tectonic Events
(3) Archaean Khondalite Series and Continental Cratonization
(4) Longquanguan-Sanggan Tectonic Belt (LSTB): Amalgamation and Exhumation
(5) A Modle for the Late Archaean Regional Tectonic Evolution
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