Contents
IX
VII. Biosphere . . . .
83
1. Carbon . . . .
85
a) Living Matter
85
b) Organic Matter in Sediments
86
c) Petroleum
87
d) Natural Gas
. . . . . . .
88
e) Coal
. . . . . . .
89
f) "Age Effect" of Carbon Isotope Distribution
89
2. Hydrogen
90
3. Sulfur
. . . .
91
VIII. Sedimentary Rocks
92
1. Silicates
92
2. Carbonates
94
a) Marine Carbonates
94
b) Limestones . . . .
96
c) Freshwater Carbonates
97
d) Dolomites
99
3. Phosphates . . . .
100
4. Sedimentary Sulfides
101
5. Native Sulfur Deposits
101
IX. Metamorphic Rocks
102
1. Regional Metamorphism
104
2. Contact Metamorphism
104
3. DjH Ratios in Metamorphic Rocks
107
4. Carbon Isotope Ratios during Metamorphism
107
5. Sulfur Isotope Distribution in Metamorphic Rocks
110
6. Variations of the 41 Kj39K Ratio in Contact Aureoles 110
X. Balance Calculations
110
References .
113
Subject Index
137