91_001. Hutton's unconformity; Devonian Old Red Sandstone on upturned Silurian slates. Siccar Point, Scotland.
This was the first recognized unconformity and played a crucial role in Hutton's work.
57_106. Unconformity of Permian conglomerate and sandstone on steeply
dipping Silurian sandstone. Richardson Mountains, Northwest
Territories,
Canada. [67.993579,-136.915284]
57_107. Detail of section close to of 56_106. Permian sandstone on
steeper dipping Silurian sandstone.
Richardson Mountains, Northwest
Territories,
Canada [67.993579,-136.915284]
64_227. Proterozoic basal conglomerate on Archaean gneiss.
Weekeroo,
South Australia. [-32.178867,140.212097]
67_136. Unconformity of Cambrian sandstone on Precambrian gneiss. North
of Kingston, Ontario, Canada. [44.300559,-76.415634]
85_026. Angular unconformity between Proterozoic red beds and
horizontal
Cambrian Tapeats sandstone.
On the other side of the canyon, the Tapeats lies on Vishnu schist
-- a non-conformity.
Kaibab Trail, Grand Canyon, AZ. [36.09136,-112.090166]
85_129. Cambrian quartzite resting on Torridonian sandstone.
Inchnadamph, Assynt, NW Highlands, Scotland.
[58.18132,-5.008764]
The hammer lies just beneath the unconformity, in this view there is
no angular discordance, but the lower sandstone is nearly horizontal,
while
the Cambrian quartzite dips at about 10 degrees east -- away from
camera.
The tilt on the lower sandstone was removed when the Cambrian was
tilted.
91_024. Triassic breccia on tilted Carboniferous Limestone. Barry Is,
Glamorgan, Wales. [ST112665; 51.389248,-3.279594]
The breccia runs across the middle of the photo. The Carboniferous
limestone strikes across the lower part and dips to the left. The light
gray Triassic limestone at the top has prominent joints at a high angle
to bedding.
91_027. Another view of the Triassic breccia on tilted Carboniferous
Limestone. Barry Is, Glamorgan, Wales. [ST112665;
51.389248,-3.279594]
67_100_8. Cliff of upturned Tertiary sands overlain by Pliocene
conglomerate.
Sellick Beach, South Australia. [-35.348008,138.439293]
