序号

词频

关键值

主题词

序号

词频

关键值

主题词

1

504

3711.095

Ma

16

138

984.487

arc

2

345

2492.207

rocks

17

140

919.136

continental

3

220

1746.258

zircon

18

105

833.441

metamorphism

4

201

1492.426

mantle

19

103

817.566

Hf

5

235

1332.892

ages

20

152

790.871

zone

6

186

1319.58

ca

21

93

738.191

Neoproterozoic

7

169

1303.553

subduction

22

192

734.459

climate

8

152

1206.505

crustal

23

95

727.355

magma

9

154

1201.056

Ga

24

92

710.972

sedimentary

10

156

1174.631

Pb

25

109

709.621

volcanic

11

146

1115.16

tectonic

26

124

699.86

marine

12

173

1112.347

ocean

27

83

658.815

garnet

13

152

1067.217

crust

28

80

624.264

geochemical

14

130

1011.228

metamorphic

29

405

609.297

data

15

126

1000.129

magmatic

30

84

607.96

isotopic