SANTA MARIA VOLCANO PHOTOGRAPHED BY TEMPEST ANDERSON

TEMPEST ANDERSON (1846-1913)

Santa María Volcano (3,772m- 12, 375ft)

Guatemala

In Santa Maria Volcano crater of 1902,  photographed in 1907, black and white glass lantern slide 

The mountain 
Santa María Volcano (3,772m- 12, 375ft)  is a large active volcano in the western highlands of Guatemala, in the Quetzaltenango Department near the city of Quetzaltenango.
The volcano was known as Gagxanul in the local K'iche' language, before the 16th century Spanish Conquest of the region.
The VEI 6 eruption of Santa María Volcano in 1902 was one of the  largest eruptions of the 20th century and one of the five biggest eruptions of the past 200 (and most likely 300) years.
Santa María Volcano is part of the Sierra Madre range of volcanoes, which extends along the western edge of Guatemala, separated from the Pacific Ocean by a broad plain. The volcanoes are formed by the subduction of the Cocos Plate under the Caribbean Plate, which led to the formation of the Central America Volcanic Arc.
Eruptions at Santa María are estimated to have begun about 30,000 years ago but the The VEI 6 eruption of october 1902 is the first eruption in recorded history. Before 1902 the volcano had been dormant for at least 500 years and possibly several thousand years, but its awakening was clearly indicated by a seismic swarm in the region starting in January 1902, which included a major earthquake in April 1902. The eruption began on 24 October, and the largest explosions occurred over the following two days, ejecting an estimated 5.5 cubic kilometres (1.3 cu mi) of magma. The eruption was one of the largest of the 20th century, only slightly less in magnitude to that of  NObaruptia in 1912 and Mount Pinatubo in 1991. The eruption had a VEI of 6, thus being 'Colossal'.
The pumice formed in the climactic eruption fell over an area of about 273,000 square kilometres (105,000 sq mi), and volcanic ash as far away as San Francisco, 4,000 kilometres (2,500 mi) away. The eruption tore away much of the south-western flank of the volcano, leaving a crater about 1 kilometre (0.6 mi) in diameter and about 300 metres (980 ft) deep, stretching from just below the summit to an elevation of about 2,300 metres (7,500 ft). The first evidence of the eruption was a sprinkling of sand on Quezaltenango. The wind then changed from the south to the east and ashes began to fall at Helvetia, a coffee plantation six miles to the South-West. Because of the lack of recorded eruptive activity at Santa María, local people did not recognise the preceding seismicity as warning signs of an eruption. At least 5,000 people died as a result of the eruption itself, and a subsequent outbreak of malaria killed many more.

The photographer
Tempest Anderson  was an ophthalmic surgeon at York County Hospital in the United Kingdom, and an expert amateur photographer and vulcanologist. He was a member of the Royal Society Commission which was appointed to investigate the aftermath of the eruptions of Soufriere volcano, St Vincent and Mont Pelee, Martinique, West Indies which both erupted in May 1902. Some of his photographs of these eruptions were subsequently published in his book, Volcanic Studies in Many Lands.
Tempest Anderson spent nine months in Mexico, Guatemala and the West Indies in 1906/1907. He travelled to Mexico to attend the 10th Congres Geologique International before sailing by mail steamer to Guatemala to study the effects of the 1902 earthquake. During the trip he observed and photographed Cerro Quemado, Santa Maria, and Atitlan. During this trip he collected first hand accounts of the 1902 eruption of the Santa Maria and the immediate aftermath. Captain Saunders of the Pacific Mail Steamer S.S. Newport observed the eruption cloud which rose to a great height. The Captain measured it using a sextant and recorded it as reaching 17 to 18 miles. The sounds accompanying the eruption were loud and were heard even louder at more distant places than close to the mountain. The eruption was heard as far away as Guatemala City, the noises so strong, they were assumed to come from neighbouring volcanoes.