AA-2026-3730F5
On the image
A hand holding a geological hammer extends into frame against a freshly exposed cliff face, the kind of documentary evidence-gathering that field geologists treated as routine but that required climbing into the exact spot where the rock told its story. The pale, stratified cut shows layers of stone or sediment, and someone has positioned themselves close enough to strike samples with the precision of someone who has done this a hundred times. This is not a tourist moment; it is a working professional documenting what the earth had to say, the way scientists in the mid-twentieth century did before their fieldwork became software and screens. The photographer stood back far enough to catch both the hand and the scale of what it was measuring against, treating the human gesture as the least important thing in the frame and the geology as the point.
The historian's note
Geological fieldwork during the mid-twentieth century relied on direct observation, hand sampling, and on-site documentation. Geologists and field surveyors used geological hammers (also called rock hammers or chisels) to collect oriented samples from freshly exposed strata, road cuts, or excavations. The stratified exposure visible here suggests either a quarry operation, a construction cut, or a deliberate excavation for survey purposes. The colour photography process and the documentary style are consistent with institutional survey work of the 1940s–1950s, possibly undertaken by a state geological survey, mining concern, or federally funded mapping project. Such fieldwork was foundational to understanding regional geology, mineral resources, and earth structure before remote sensing and core drilling became standard.
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Geological Survey Work, ca. 1940s. 1940–1955. Archive & Atlas, Historical Image Library, AA-2026-3730F5. https://thearchive.archiveandatlas.com/library/geological-survey-work-ca-1940s.
@misc{aaAA20263730F5,
title = {Geological Survey Work, ca. 1940s},
year = {1940–1955},
howpublished = {Archive \& Atlas, Historical Image Library},
note = {Accession AA-2026-3730F5},
url = {https://thearchive.archiveandatlas.com/library/geological-survey-work-ca-1940s}
}TY - ART TI - Geological Survey Work, ca. 1940s PY - 1940–1955 PB - Archive & Atlas, Historical Image Library AN - AA-2026-3730F5 UR - https://thearchive.archiveandatlas.com/library/geological-survey-work-ca-1940s ER -
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