Table 1 Seep distribution in sedimentary basins and petroleum fields.

From: Influence of tectonics on global scale distribution of geological methane emissions

 

Area (Mkm2)

N° of seeps

% seeps

N° of petroleum fields

% petroleum fields

Convergent basins

44.5

1941

gas

644

72

517

58.0

oil

589

MV

708

Divergent basins

73.8

758

gas

195

28

374

42.0

oil

530

MV

33

Petroleum fields

22.7

2179

 

81

–

–

  1. Number (and percentage) of seeps within convergent and divergent basins and petroleum fields, and number (and percentage) of petroleum fields within the two groups of basins.
  2. MV mud volcanoes.
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