Synclines, [42].

System of fractures, [55].

Taal volcano, double explosive eruption of 1911, [120], [121].

Table mountains, origin of, [112].

Takyr, [216].

Talc, [460].

Talc schist, [465].

Talmage, J. E., cited, [221].

Talus, [152], [153], [215].

Tangier-Smith, W. S., cited, [260].