While making a hydrograpahic survey around Chiloé Archipelago in 1871 Vidal Gormaz obtained information from locals on the effects of the 1837 Valdivia earthquake . His explorations of the southern Patagonian archipelagoes made him critical of the work of Robert FitzRoy and Charles Darwin whom according to him had failed acknowledge the importance of the Patagonian islands
1837 Valdivia earthquake
1837 Valdivia earthquake
Francisco Vidal Gormaz