Patagonian sheep farming boom Patagonian sheep farming boom In late 19th and early 20th centuries, sheep farming expanded across the Patagonian grasslands making the southern regions of Argentina and Chile one of the world's foremost sheep farming areas. The sheep farming boom attracted thousands of immigrants from Chiloé and Europe to southern Patagonia. Early sheep farming in Patagonia was oriented towards wool production but changed over time with the development of industrial refrigerators towards meat export. Besides altering the demographic and economic outlook of Southern Patagonia the sheep farming boom also changed the steppe ecosystem. Sheep farming in Patagonia was carried out in a
Patagonian Ice Sheet of more than 500,000 km³, of which about 4% remains glaciated today in two separated portions known as the Northern and Southern Patagonian Ice Fields. The ice-volume reduction contributed to a global sea-level rise of about 1.2 meters. However, during the first glacial period at the beginning of the Pleistocene ice extended to the present-day Argentine coast. With each successive glaciation it is known that the ice has stopped further and further to the west, with aridity always serving as the decisive factor halting glacier spread: it is believed that the east-west precipitation gradients during glacial periods were even steeper