AA-2026-5F7C5E
On the image
The Earth's crust, in the 1970s, was still organized into layers, much like a poorly constructed cake. This particular cross-section reveals what happens when a liquid-filled crack decides to ignore all that careful stacking and push straight through, forming a stark white vein.
The white material, solidified from some ancient fluid, now stands as a geological exclamation point. It suggests that even deep underground, nature had its own version of a plumbing emergency, leaving behind permanent evidence for anyone who cared to look.
A fence post at the top indicates that humans, at some point, decided this particular piece of geology was theirs to enclose. They likely believed their property lines would outlast the very slow, persistent forces still at work beneath their feet.
The historian's note
This image from the 1970s displays a geological exposure, likely a road cut or eroded hillside, revealing stratified rock or sediment layers. These layers are indicative of depositional processes over time, where different materials settled in distinct horizontal bands.
A prominent vertical feature, appearing as a mineral vein, cuts through these layers. Such veins form when mineral-rich fluids flow through fractures in existing rock, depositing minerals like quartz or calcite as they cool or precipitate. This structure provides evidence of past tectonic activity and hydrothermal processes.
The scene is characteristic of many terrestrial environments where geological forces have exposed subsurface features. The fence in the background places the geological feature within a human-managed landscape, common in areas undergoing infrastructure development or land division during the 20th century.
Subjects & keywords — each links to a search
Visually related — by likeness
Mineral Vein in Stratified Earth, 1970s. 1970–1979. Archive & Atlas, Historical Image Library, AA-2026-5F7C5E. https://thearchive.archiveandatlas.com/library/mineral-vein-in-stratified-earth-1970s.
@misc{aaAA20265F7C5E,
title = {Mineral Vein in Stratified Earth, 1970s},
year = {1970–1979},
howpublished = {Archive \& Atlas, Historical Image Library},
note = {Accession AA-2026-5F7C5E},
url = {https://thearchive.archiveandatlas.com/library/mineral-vein-in-stratified-earth-1970s}
}TY - ART TI - Mineral Vein in Stratified Earth, 1970s PY - 1970–1979 PB - Archive & Atlas, Historical Image Library AN - AA-2026-5F7C5E UR - https://thearchive.archiveandatlas.com/library/mineral-vein-in-stratified-earth-1970s ER -
From the community
Identifications, corrections, and discussion from readers — reviewed by a librarian before appearing here.
Sign in to add an identification, correction, or comment.
No notes yet — be the first to add what you know about this image.